blob: 04e4549299baf5cb12e0b003768bea34a7b5232e [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version
5 * 2 of the License, or (at your option) any later version.
6 *
7 * Original driver code supplied by Multi-Tech
8 *
9 * Changes
Alan Cox8eb04cf2008-11-11 14:48:44 +000010 * 1/9/98 alan@lxorguk.ukuu.org.uk
11 * Merge to 2.0.x kernel tree
Linus Torvalds1da177e2005-04-16 15:20:36 -070012 * Obtain and use official major/minors
13 * Loader switched to a misc device
14 * (fixed range check bug as a side effect)
15 * Printk clean up
Alan Cox8eb04cf2008-11-11 14:48:44 +000016 * 9/12/98 alan@lxorguk.ukuu.org.uk
17 * Rough port to 2.1.x
Linus Torvalds1da177e2005-04-16 15:20:36 -070018 *
19 * 10/6/99 sameer Merged the ISA and PCI drivers to
20 * a new unified driver.
21 *
22 * 3/9/99 sameer Added support for ISI4616 cards.
23 *
24 * 16/9/99 sameer We do not force RTS low anymore.
Jiri Slabyd8d16e42006-01-09 20:54:21 -080025 * This is to prevent the firmware
Linus Torvalds1da177e2005-04-16 15:20:36 -070026 * from getting confused.
27 *
28 * 26/10/99 sameer Cosmetic changes:The driver now
29 * dumps the Port Count information
30 * along with I/O address and IRQ.
31 *
32 * 13/12/99 sameer Fixed the problem with IRQ sharing.
33 *
34 * 10/5/00 sameer Fixed isicom_shutdown_board()
35 * to not lower DTR on all the ports
Jiri Slabyd8d16e42006-01-09 20:54:21 -080036 * when the last port on the card is
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 * closed.
38 *
39 * 10/5/00 sameer Signal mask setup command added
Jiri Slabyd8d16e42006-01-09 20:54:21 -080040 * to isicom_setup_port and
Linus Torvalds1da177e2005-04-16 15:20:36 -070041 * isicom_shutdown_port.
42 *
43 * 24/5/00 sameer The driver is now SMP aware.
Jiri Slabyd8d16e42006-01-09 20:54:21 -080044 *
45 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070046 * 27/11/00 Vinayak P Risbud Fixed the Driver Crash Problem
Jiri Slabyd8d16e42006-01-09 20:54:21 -080047 *
48 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070049 * 03/01/01 anil .s Added support for resetting the
50 * internal modems on ISI cards.
51 *
52 * 08/02/01 anil .s Upgraded the driver for kernel
53 * 2.4.x
54 *
Jiri Slabyd8d16e42006-01-09 20:54:21 -080055 * 11/04/01 Kevin Fixed firmware load problem with
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 * ISIHP-4X card
Jiri Slabyd8d16e42006-01-09 20:54:21 -080057 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070058 * 30/04/01 anil .s Fixed the remote login through
59 * ISI port problem. Now the link
60 * does not go down before password
61 * prompt.
62 *
63 * 03/05/01 anil .s Fixed the problem with IRQ sharing
64 * among ISI-PCI cards.
65 *
66 * 03/05/01 anil .s Added support to display the version
Jiri Slabyd8d16e42006-01-09 20:54:21 -080067 * info during insmod as well as module
Linus Torvalds1da177e2005-04-16 15:20:36 -070068 * listing by lsmod.
Jiri Slabyd8d16e42006-01-09 20:54:21 -080069 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070070 * 10/05/01 anil .s Done the modifications to the source
71 * file and Install script so that the
72 * same installation can be used for
73 * 2.2.x and 2.4.x kernel.
74 *
75 * 06/06/01 anil .s Now we drop both dtr and rts during
76 * shutdown_port as well as raise them
77 * during isicom_config_port.
Jiri Slabyd8d16e42006-01-09 20:54:21 -080078 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 * 09/06/01 acme@conectiva.com.br use capable, not suser, do
80 * restore_flags on failure in
81 * isicom_send_break, verify put_user
82 * result
83 *
Jiri Slabyd8d16e42006-01-09 20:54:21 -080084 * 11/02/03 ranjeeth Added support for 230 Kbps and 460 Kbps
85 * Baud index extended to 21
86 *
87 * 20/03/03 ranjeeth Made to work for Linux Advanced server.
88 * Taken care of license warning.
89 *
90 * 10/12/03 Ravindra Made to work for Fedora Core 1 of
Linus Torvalds1da177e2005-04-16 15:20:36 -070091 * Red Hat Distribution
92 *
93 * 06/01/05 Alan Cox Merged the ISI and base kernel strands
94 * into a single 2.6 driver
95 *
96 * ***********************************************************
97 *
Jiri Slabyd8d16e42006-01-09 20:54:21 -080098 * To use this driver you also need the support package. You
Linus Torvalds1da177e2005-04-16 15:20:36 -070099 * can find this in RPM format on
100 * ftp://ftp.linux.org.uk/pub/linux/alan
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800101 *
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 * You can find the original tools for this direct from Multitech
103 * ftp://ftp.multitech.com/ISI-Cards/
104 *
105 * Having installed the cards the module options (/etc/modprobe.conf)
106 *
107 * options isicom io=card1,card2,card3,card4 irq=card1,card2,card3,card4
108 *
109 * Omit those entries for boards you don't have installed.
110 *
111 * TODO
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 * Merge testing
113 * 64-bit verification
114 */
115
116#include <linux/module.h>
Jiri Slabye65c1db2006-01-09 20:54:25 -0800117#include <linux/firmware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#include <linux/kernel.h>
119#include <linux/tty.h>
Alan Cox33f0f882006-01-09 20:54:13 -0800120#include <linux/tty_flip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121#include <linux/termios.h>
122#include <linux/fs.h>
123#include <linux/sched.h>
124#include <linux/serial.h>
125#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126#include <linux/interrupt.h>
127#include <linux/timer.h>
128#include <linux/delay.h>
129#include <linux/ioport.h>
130
Alan Cox251b8dd2008-04-30 00:54:12 -0700131#include <linux/uaccess.h>
132#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133#include <asm/system.h>
134
135#include <linux/pci.h>
136
137#include <linux/isicom.h>
138
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800139#define InterruptTheCard(base) outw(0, (base) + 0xc)
140#define ClearInterrupt(base) inw((base) + 0x0a)
141
Jiri Slaby73b52572007-05-08 00:36:29 -0700142#define pr_dbg(str...) pr_debug("ISICOM: " str)
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800143#ifdef DEBUG
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800144#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
145#else
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800146#define isicom_paranoia_check(a, b, c) 0
147#endif
148
Jiri Slaby9ac09482006-01-09 20:54:24 -0800149static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
150static void __devexit isicom_remove(struct pci_dev *);
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152static struct pci_device_id isicom_pci_tbl[] = {
Jiri Slaby9ac09482006-01-09 20:54:24 -0800153 { PCI_DEVICE(VENDOR_ID, 0x2028) },
154 { PCI_DEVICE(VENDOR_ID, 0x2051) },
155 { PCI_DEVICE(VENDOR_ID, 0x2052) },
156 { PCI_DEVICE(VENDOR_ID, 0x2053) },
157 { PCI_DEVICE(VENDOR_ID, 0x2054) },
158 { PCI_DEVICE(VENDOR_ID, 0x2055) },
159 { PCI_DEVICE(VENDOR_ID, 0x2056) },
160 { PCI_DEVICE(VENDOR_ID, 0x2057) },
161 { PCI_DEVICE(VENDOR_ID, 0x2058) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 { 0 }
163};
164MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
165
Jiri Slaby9ac09482006-01-09 20:54:24 -0800166static struct pci_driver isicom_driver = {
167 .name = "isicom",
168 .id_table = isicom_pci_tbl,
169 .probe = isicom_probe,
170 .remove = __devexit_p(isicom_remove)
171};
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173static int prev_card = 3; /* start servicing isi_card[0] */
174static struct tty_driver *isicom_normal;
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176static void isicom_tx(unsigned long _data);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800177static void isicom_start(struct tty_struct *tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Jiri Slaby34b55b82006-12-08 02:38:55 -0800179static DEFINE_TIMER(tx, isicom_tx, 0, 0);
180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181/* baud index mappings from linux defns to isi */
182
183static signed char linuxb_to_isib[] = {
Jiri Slaby7edc1362007-02-10 01:44:54 -0800184 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185};
186
187struct isi_board {
Jiri Slaby8070e352006-01-09 20:54:22 -0800188 unsigned long base;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700189 int irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 unsigned char port_count;
191 unsigned short status;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800192 unsigned short port_status; /* each bit for each port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 unsigned short shift_count;
Alan Cox251b8dd2008-04-30 00:54:12 -0700194 struct isi_port *ports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 signed char count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
197 unsigned long flags;
Jiri Slaby938a7022006-12-08 02:38:52 -0800198 unsigned int index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199};
200
201struct isi_port {
202 unsigned short magic;
Alan Coxf1d03222008-07-16 21:55:45 +0100203 struct tty_port port;
Jiri Slaby8070e352006-01-09 20:54:22 -0800204 u16 channel;
205 u16 status;
Alan Cox251b8dd2008-04-30 00:54:12 -0700206 struct isi_board *card;
Alan Cox251b8dd2008-04-30 00:54:12 -0700207 unsigned char *xmit_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 int xmit_head;
209 int xmit_tail;
210 int xmit_cnt;
211};
212
213static struct isi_board isi_card[BOARD_COUNT];
214static struct isi_port isi_ports[PORT_COUNT];
215
216/*
217 * Locking functions for card level locking. We need to own both
218 * the kernel lock for the card and have the card in a position that
219 * it wants to talk.
220 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800221
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700222static inline int WaitTillCardIsFree(unsigned long base)
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800223{
224 unsigned int count = 0;
225 unsigned int a = in_atomic(); /* do we run under spinlock? */
226
227 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
228 if (a)
229 mdelay(1);
230 else
231 msleep(1);
232
233 return !(inw(base + 0xe) & 0x1);
234}
235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236static int lock_card(struct isi_board *card)
237{
Jiri Slaby8070e352006-01-09 20:54:22 -0800238 unsigned long base = card->base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700239 unsigned int retries, a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700241 for (retries = 0; retries < 10; retries++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 spin_lock_irqsave(&card->card_lock, card->flags);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700243 for (a = 0; a < 10; a++) {
244 if (inw(base + 0xe) & 0x1)
245 return 1;
246 udelay(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 }
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700248 spin_unlock_irqrestore(&card->card_lock, card->flags);
249 msleep(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800251 printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
252 card->base);
253
Adrian Bunk04187262006-06-30 18:23:04 +0200254 return 0; /* Failed to acquire the card! */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255}
256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257static void unlock_card(struct isi_board *card)
258{
259 spin_unlock_irqrestore(&card->card_lock, card->flags);
260}
261
262/*
263 * ISI Card specific ops ...
264 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800265
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800266/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800267static void raise_dtr(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800269 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800270 unsigned long base = card->base;
271 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800273 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 return;
275
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800276 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 outw(0x0504, base);
278 InterruptTheCard(base);
279 port->status |= ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280}
281
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800282/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800283static inline void drop_dtr(struct isi_port *port)
284{
285 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800286 unsigned long base = card->base;
287 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800289 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 return;
291
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800292 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 outw(0x0404, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800294 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 port->status &= ~ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800298/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800299static inline void raise_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800301 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800302 unsigned long base = card->base;
303 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800305 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 return;
307
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800308 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 outw(0x0a04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800310 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 port->status |= ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312}
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800313
314/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800315static inline void drop_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800317 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800318 unsigned long base = card->base;
319 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800321 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 return;
323
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800324 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 outw(0x0804, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800326 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 port->status &= ~ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328}
329
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800330/* card->lock MUST NOT be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800331static inline void raise_dtr_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800333 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800334 unsigned long base = card->base;
335 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336
337 if (!lock_card(card))
338 return;
339
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800340 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 outw(0x0f04, base);
342 InterruptTheCard(base);
343 port->status |= (ISI_DTR | ISI_RTS);
344 unlock_card(card);
345}
346
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800347/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800348static void drop_dtr_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800350 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800351 unsigned long base = card->base;
352 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800354 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 return;
356
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800357 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358 outw(0x0c04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800359 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 port->status &= ~(ISI_RTS | ISI_DTR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361}
362
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363/*
364 * ISICOM Driver specific routines ...
365 *
366 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800367
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800368static inline int __isicom_paranoia_check(struct isi_port const *port,
369 char *name, const char *routine)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 if (!port) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800372 printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for "
373 "dev %s in %s.\n", name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374 return 1;
375 }
376 if (port->magic != ISICOM_MAGIC) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800377 printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for "
378 "dev %s in %s.\n", name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 return 1;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800380 }
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800381
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 return 0;
383}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800384
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800386 * Transmitter.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 *
388 * We shovel data into the card buffers on a regular basis. The card
389 * will do the rest of the work for us.
390 */
391
392static void isicom_tx(unsigned long _data)
393{
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700394 unsigned long flags, base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700395 unsigned int retries;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700396 short count = (BOARD_COUNT-1), card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 short txcount, wrd, residue, word_count, cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800398 struct isi_port *port;
399 struct tty_struct *tty;
400
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 /* find next active board */
402 card = (prev_card + 1) & 0x0003;
Alan Cox251b8dd2008-04-30 00:54:12 -0700403 while (count-- > 0) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800404 if (isi_card[card].status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800406 card = (card + 1) & 0x0003;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 }
408 if (!(isi_card[card].status & BOARD_ACTIVE))
409 goto sched_again;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800410
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 prev_card = card;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800412
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 count = isi_card[card].port_count;
414 port = isi_card[card].ports;
415 base = isi_card[card].base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700416
417 spin_lock_irqsave(&isi_card[card].card_lock, flags);
418 for (retries = 0; retries < 100; retries++) {
419 if (inw(base + 0xe) & 0x1)
420 break;
421 udelay(2);
422 }
423 if (retries >= 100)
424 goto unlock;
425
Alan Coxd450b5a2008-10-13 10:39:58 +0100426 tty = tty_port_tty_get(&port->port);
427 if (tty == NULL)
428 goto put_unlock;
429
Alan Cox251b8dd2008-04-30 00:54:12 -0700430 for (; count > 0; count--, port++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 /* port not active or tx disabled to force flow control */
Alan Coxf1d03222008-07-16 21:55:45 +0100432 if (!(port->port.flags & ASYNC_INITIALIZED) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800433 !(port->status & ISI_TXOK))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700434 continue;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800435
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700437 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700439
440 if (!(inw(base + 0x02) & (1 << port->channel)))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800441 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700442
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800443 pr_dbg("txing %d bytes, port%d.\n", txcount,
444 port->channel + 1);
445 outw((port->channel << isi_card[card].shift_count) | txcount,
446 base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 residue = NO;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800448 wrd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800450 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
451 - port->xmit_tail));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452 if (residue == YES) {
453 residue = NO;
454 if (cnt > 0) {
Alan Coxf1d03222008-07-16 21:55:45 +0100455 wrd |= (port->port.xmit_buf[port->xmit_tail]
Jiri Slabya547dfe2006-01-09 20:54:26 -0800456 << 8);
457 port->xmit_tail = (port->xmit_tail + 1)
458 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 port->xmit_cnt--;
460 txcount--;
461 cnt--;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800462 outw(wrd, base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800463 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700464 outw(wrd, base);
465 break;
466 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800467 }
Alan Cox251b8dd2008-04-30 00:54:12 -0700468 if (cnt <= 0)
469 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 word_count = cnt >> 1;
Alan Coxf1d03222008-07-16 21:55:45 +0100471 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800472 port->xmit_tail = (port->xmit_tail
473 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 txcount -= (word_count << 1);
475 port->xmit_cnt -= (word_count << 1);
476 if (cnt & 0x0001) {
477 residue = YES;
Alan Coxf1d03222008-07-16 21:55:45 +0100478 wrd = port->port.xmit_buf[port->xmit_tail];
Jiri Slabya547dfe2006-01-09 20:54:26 -0800479 port->xmit_tail = (port->xmit_tail + 1)
480 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 port->xmit_cnt--;
482 txcount--;
483 }
484 }
485
486 InterruptTheCard(base);
487 if (port->xmit_cnt <= 0)
488 port->status &= ~ISI_TXOK;
489 if (port->xmit_cnt <= WAKEUP_CHARS)
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800490 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800491 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492
Alan Coxd450b5a2008-10-13 10:39:58 +0100493put_unlock:
494 tty_kref_put(tty);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700495unlock:
496 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800497 /* schedule another tx for hopefully in about 10ms */
498sched_again:
Jiri Slaby34b55b82006-12-08 02:38:55 -0800499 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800500}
501
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800503 * Main interrupt handler routine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800505
David Howells7d12e782006-10-05 14:55:46 +0100506static irqreturn_t isicom_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700507{
Jiri Slaby8070e352006-01-09 20:54:22 -0800508 struct isi_board *card = dev_id;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800509 struct isi_port *port;
510 struct tty_struct *tty;
Jiri Slaby8070e352006-01-09 20:54:22 -0800511 unsigned long base;
512 u16 header, word_count, count, channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 short byte_count;
Alan Cox33f0f882006-01-09 20:54:13 -0800514 unsigned char *rp;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800515
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516 if (!card || !(card->status & FIRMWARE_LOADED))
517 return IRQ_NONE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800518
Linus Torvalds1da177e2005-04-16 15:20:36 -0700519 base = card->base;
Jiri Slabycb4a10c2007-02-10 01:44:53 -0800520
521 /* did the card interrupt us? */
522 if (!(inw(base + 0x0e) & 0x02))
523 return IRQ_NONE;
524
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 spin_lock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800526
Jiri Slaby18234f82006-12-08 02:38:51 -0800527 /*
528 * disable any interrupts from the PCI card and lower the
529 * interrupt line
530 */
531 outw(0x8000, base+0x04);
532 ClearInterrupt(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800533
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 inw(base); /* get the dummy word out */
535 header = inw(base);
536 channel = (header & 0x7800) >> card->shift_count;
537 byte_count = header & 0xff;
538
539 if (channel + 1 > card->port_count) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800540 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
541 "%d(channel) > port_count.\n", base, channel+1);
Jiri Slaby18234f82006-12-08 02:38:51 -0800542 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 spin_unlock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800544 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 }
546 port = card->ports + channel;
Alan Coxf1d03222008-07-16 21:55:45 +0100547 if (!(port->port.flags & ASYNC_INITIALIZED)) {
Jiri Slaby18234f82006-12-08 02:38:51 -0800548 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800549 spin_unlock(&card->card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700550 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800551 }
552
Alan Coxd450b5a2008-10-13 10:39:58 +0100553 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 if (tty == NULL) {
555 word_count = byte_count >> 1;
Alan Cox251b8dd2008-04-30 00:54:12 -0700556 while (byte_count > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700557 inw(base);
558 byte_count -= 2;
559 }
560 if (byte_count & 0x01)
561 inw(base);
Jiri Slaby18234f82006-12-08 02:38:51 -0800562 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 spin_unlock(&card->card_lock);
564 return IRQ_HANDLED;
565 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800566
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 if (header & 0x8000) { /* Status Packet */
568 header = inw(base);
Alan Cox251b8dd2008-04-30 00:54:12 -0700569 switch (header & 0xff) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800570 case 0: /* Change in EIA signals */
Alan Coxf1d03222008-07-16 21:55:45 +0100571 if (port->port.flags & ASYNC_CHECK_CD) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800572 if (port->status & ISI_DCD) {
573 if (!(header & ISI_DCD)) {
574 /* Carrier has been lost */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800575 pr_dbg("interrupt: DCD->low.\n"
576 );
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 port->status &= ~ISI_DCD;
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800578 tty_hangup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800580 } else if (header & ISI_DCD) {
581 /* Carrier has been detected */
582 pr_dbg("interrupt: DCD->high.\n");
583 port->status |= ISI_DCD;
Alan Coxf1d03222008-07-16 21:55:45 +0100584 wake_up_interruptible(&port->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800586 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800587 if (header & ISI_DCD)
588 port->status |= ISI_DCD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800590 port->status &= ~ISI_DCD;
591 }
592
Alan Coxf1d03222008-07-16 21:55:45 +0100593 if (port->port.flags & ASYNC_CTS_FLOW) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100594 if (tty->hw_stopped) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800595 if (header & ISI_CTS) {
Alan Coxf1d03222008-07-16 21:55:45 +0100596 port->port.tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800597 /* start tx ing */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800598 port->status |= (ISI_TXOK
599 | ISI_CTS);
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800600 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800601 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800602 } else if (!(header & ISI_CTS)) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100603 tty->hw_stopped = 1;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800604 /* stop tx ing */
605 port->status &= ~(ISI_TXOK | ISI_CTS);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800606 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800607 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800608 if (header & ISI_CTS)
609 port->status |= ISI_CTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700610 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800611 port->status &= ~ISI_CTS;
612 }
613
614 if (header & ISI_DSR)
615 port->status |= ISI_DSR;
616 else
617 port->status &= ~ISI_DSR;
618
619 if (header & ISI_RI)
620 port->status |= ISI_RI;
621 else
622 port->status &= ~ISI_RI;
623
624 break;
625
Jiri Slabya547dfe2006-01-09 20:54:26 -0800626 case 1: /* Received Break !!! */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800627 tty_insert_flip_char(tty, 0, TTY_BREAK);
Alan Coxf1d03222008-07-16 21:55:45 +0100628 if (port->port.flags & ASYNC_SAK)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800629 do_SAK(tty);
630 tty_flip_buffer_push(tty);
631 break;
632
633 case 2: /* Statistics */
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800634 pr_dbg("isicom_interrupt: stats!!!.\n");
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800635 break;
636
637 default:
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800638 pr_dbg("Intr: Unknown code in status packet.\n");
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800639 break;
640 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800641 } else { /* Data Packet */
Alan Cox33f0f882006-01-09 20:54:13 -0800642
643 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800644 pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700645 word_count = count >> 1;
Alan Cox33f0f882006-01-09 20:54:13 -0800646 insw(base, rp, word_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 byte_count -= (word_count << 1);
648 if (count & 0x0001) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800649 tty_insert_flip_char(tty, inw(base) & 0xff,
650 TTY_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700651 byte_count -= 2;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800652 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 if (byte_count > 0) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800654 pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping "
655 "bytes...\n", base, channel + 1);
Alan Cox251b8dd2008-04-30 00:54:12 -0700656 /* drain out unread xtra data */
657 while (byte_count > 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 inw(base);
659 byte_count -= 2;
660 }
661 }
Alan Cox33f0f882006-01-09 20:54:13 -0800662 tty_flip_buffer_push(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 }
Jiri Slaby18234f82006-12-08 02:38:51 -0800664 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800665 spin_unlock(&card->card_lock);
Alan Coxd450b5a2008-10-13 10:39:58 +0100666 tty_kref_put(tty);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800667
Linus Torvalds1da177e2005-04-16 15:20:36 -0700668 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800669}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670
Alan Coxd450b5a2008-10-13 10:39:58 +0100671static void isicom_config_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672{
Alan Coxd450b5a2008-10-13 10:39:58 +0100673 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800674 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 unsigned long baud;
Jiri Slaby8070e352006-01-09 20:54:22 -0800676 unsigned long base = card->base;
677 u16 channel_setup, channel = port->channel,
678 shift_count = card->shift_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700679 unsigned char flow_ctrl;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800680
Alan Cox251b8dd2008-04-30 00:54:12 -0700681 /* FIXME: Switch to new tty baud API */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 baud = C_BAUD(tty);
683 if (baud & CBAUDEX) {
684 baud &= ~CBAUDEX;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800685
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
687 * then the card is programmed for 57.6Kbps or 115Kbps
688 * respectively.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800689 */
690
Jiri Slaby7edc1362007-02-10 01:44:54 -0800691 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
692 if (baud < 1 || baud > 4)
Alan Coxd450b5a2008-10-13 10:39:58 +0100693 tty->termios->c_cflag &= ~CBAUDEX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 else
695 baud += 15;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800696 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697 if (baud == 15) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800698
699 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 * by the set_serial_info ioctl ... this is done by
701 * the 'setserial' utility.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800702 */
703
Alan Coxf1d03222008-07-16 21:55:45 +0100704 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800705 baud++; /* 57.6 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100706 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
Alan Cox251b8dd2008-04-30 00:54:12 -0700707 baud += 2; /* 115 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100708 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800709 baud += 3; /* 230 kbps*/
Alan Coxf1d03222008-07-16 21:55:45 +0100710 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800711 baud += 4; /* 460 kbps*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 }
713 if (linuxb_to_isib[baud] == -1) {
714 /* hang up */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800715 drop_dtr(port);
716 return;
Alan Cox251b8dd2008-04-30 00:54:12 -0700717 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 raise_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800719
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800720 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700721 outw(0x8000 | (channel << shift_count) | 0x03, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700722 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
723 channel_setup = 0;
Alan Cox251b8dd2008-04-30 00:54:12 -0700724 switch (C_CSIZE(tty)) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800725 case CS5:
726 channel_setup |= ISICOM_CS5;
727 break;
728 case CS6:
729 channel_setup |= ISICOM_CS6;
730 break;
731 case CS7:
732 channel_setup |= ISICOM_CS7;
733 break;
734 case CS8:
735 channel_setup |= ISICOM_CS8;
736 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700737 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800738
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 if (C_CSTOPB(tty))
740 channel_setup |= ISICOM_2SB;
741 if (C_PARENB(tty)) {
742 channel_setup |= ISICOM_EVPAR;
743 if (C_PARODD(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800744 channel_setup |= ISICOM_ODPAR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700745 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800746 outw(channel_setup, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 InterruptTheCard(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800748 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 if (C_CLOCAL(tty))
Alan Coxf1d03222008-07-16 21:55:45 +0100750 port->port.flags &= ~ASYNC_CHECK_CD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 else
Alan Coxf1d03222008-07-16 21:55:45 +0100752 port->port.flags |= ASYNC_CHECK_CD;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800753
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 /* flow control settings ...*/
755 flow_ctrl = 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100756 port->port.flags &= ~ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 if (C_CRTSCTS(tty)) {
Alan Coxf1d03222008-07-16 21:55:45 +0100758 port->port.flags |= ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 flow_ctrl |= ISICOM_CTSRTS;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800760 }
761 if (I_IXON(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
763 if (I_IXOFF(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800764 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
765
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800766 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700767 outw(0x8000 | (channel << shift_count) | 0x04, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 outw(flow_ctrl << 8 | 0x05, base);
769 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
770 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800772
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 /* rx enabled -> enable port for rx on the card */
774 if (C_CREAD(tty)) {
775 card->port_status |= (1 << channel);
776 outw(card->port_status, base + 0x02);
777 }
778}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700779
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800780/* open et all */
781
782static inline void isicom_setup_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783{
784 int channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800785 struct isi_port *port;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800787
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 spin_lock_irqsave(&bp->card_lock, flags);
789 if (bp->status & BOARD_ACTIVE) {
790 spin_unlock_irqrestore(&bp->card_lock, flags);
791 return;
792 }
793 port = bp->ports;
794 bp->status |= BOARD_ACTIVE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800795 for (channel = 0; channel < bp->port_count; channel++, port++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 drop_dtr_rts(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800797 spin_unlock_irqrestore(&bp->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800799
Alan Coxd450b5a2008-10-13 10:39:58 +0100800static int isicom_setup_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801{
Alan Coxd450b5a2008-10-13 10:39:58 +0100802 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800803 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700804 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800805
Alan Coxf1d03222008-07-16 21:55:45 +0100806 if (port->port.flags & ASYNC_INITIALIZED)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807 return 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100808 if (tty_port_alloc_xmit_buf(&port->port) < 0)
809 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700810
811 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +0100812 clear_bit(TTY_IO_ERROR, &tty->flags);
Alan Coxf1d03222008-07-16 21:55:45 +0100813 if (port->port.count == 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814 card->count++;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800815
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800817
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 /* discard any residual data */
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800819 if (WaitTillCardIsFree(card->base) == 0) {
820 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
821 card->base);
822 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
823 InterruptTheCard(card->base);
824 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800825
Alan Coxd450b5a2008-10-13 10:39:58 +0100826 isicom_config_port(tty);
Alan Coxf1d03222008-07-16 21:55:45 +0100827 port->port.flags |= ASYNC_INITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800829
830 return 0;
831}
832
Jiri Slabya547dfe2006-01-09 20:54:26 -0800833static int block_til_ready(struct tty_struct *tty, struct file *filp,
834 struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800836 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837 int do_clocal = 0, retval;
838 unsigned long flags;
839 DECLARE_WAITQUEUE(wait, current);
840
841 /* block if port is in the process of being closed */
842
Alan Coxf1d03222008-07-16 21:55:45 +0100843 if (tty_hung_up_p(filp) || port->port.flags & ASYNC_CLOSING) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800844 pr_dbg("block_til_ready: close in progress.\n");
Alan Coxf1d03222008-07-16 21:55:45 +0100845 interruptible_sleep_on(&port->port.close_wait);
846 if (port->port.flags & ASYNC_HUP_NOTIFY)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847 return -EAGAIN;
848 else
849 return -ERESTARTSYS;
850 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800851
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 /* if non-blocking mode is set ... */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800853
Jiri Slabya547dfe2006-01-09 20:54:26 -0800854 if ((filp->f_flags & O_NONBLOCK) ||
855 (tty->flags & (1 << TTY_IO_ERROR))) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800856 pr_dbg("block_til_ready: non-block mode.\n");
Alan Coxf1d03222008-07-16 21:55:45 +0100857 port->port.flags |= ASYNC_NORMAL_ACTIVE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800858 return 0;
859 }
860
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 if (C_CLOCAL(tty))
862 do_clocal = 1;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800863
864 /* block waiting for DCD to be asserted, and while
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 callout dev is busy */
866 retval = 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100867 add_wait_queue(&port->port.open_wait, &wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700868
869 spin_lock_irqsave(&card->card_lock, flags);
870 if (!tty_hung_up_p(filp))
Alan Coxf1d03222008-07-16 21:55:45 +0100871 port->port.count--;
872 port->port.blocked_open++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700873 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800874
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875 while (1) {
876 raise_dtr_rts(port);
877
878 set_current_state(TASK_INTERRUPTIBLE);
Alan Coxf1d03222008-07-16 21:55:45 +0100879 if (tty_hung_up_p(filp) || !(port->port.flags & ASYNC_INITIALIZED)) {
880 if (port->port.flags & ASYNC_HUP_NOTIFY)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700881 retval = -EAGAIN;
882 else
883 retval = -ERESTARTSYS;
884 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800885 }
Alan Coxf1d03222008-07-16 21:55:45 +0100886 if (!(port->port.flags & ASYNC_CLOSING) &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800887 (do_clocal || (port->status & ISI_DCD))) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800889 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890 if (signal_pending(current)) {
891 retval = -ERESTARTSYS;
892 break;
893 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800894 schedule();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 }
896 set_current_state(TASK_RUNNING);
Alan Coxf1d03222008-07-16 21:55:45 +0100897 remove_wait_queue(&port->port.open_wait, &wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 spin_lock_irqsave(&card->card_lock, flags);
899 if (!tty_hung_up_p(filp))
Alan Coxf1d03222008-07-16 21:55:45 +0100900 port->port.count++;
901 port->port.blocked_open--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902 spin_unlock_irqrestore(&card->card_lock, flags);
903 if (retval)
904 return retval;
Alan Coxf1d03222008-07-16 21:55:45 +0100905 port->port.flags |= ASYNC_NORMAL_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906 return 0;
907}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800908
909static int isicom_open(struct tty_struct *tty, struct file *filp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800911 struct isi_port *port;
912 struct isi_board *card;
Jiri Slaby17c4edf2006-12-08 02:38:57 -0800913 unsigned int board;
914 int error, line;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700915
916 line = tty->index;
917 if (line < 0 || line > PORT_COUNT-1)
918 return -ENODEV;
919 board = BOARD(line);
920 card = &isi_card[board];
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800921
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 if (!(card->status & FIRMWARE_LOADED))
923 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800924
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 /* open on a port greater than the port count for the card !!! */
926 if (line > ((board * 16) + card->port_count - 1))
927 return -ENODEV;
928
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800929 port = &isi_ports[line];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700930 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
931 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800932
933 isicom_setup_board(card);
934
Alan Coxf1d03222008-07-16 21:55:45 +0100935 port->port.count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700936 tty->driver_data = port;
Alan Coxd450b5a2008-10-13 10:39:58 +0100937 tty_port_tty_set(&port->port, tty);
938 error = isicom_setup_port(tty);
Alan Cox251b8dd2008-04-30 00:54:12 -0700939 if (error == 0)
940 error = block_til_ready(tty, filp, port);
941 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800943
Linus Torvalds1da177e2005-04-16 15:20:36 -0700944/* close et all */
945
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800946static inline void isicom_shutdown_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947{
Alan Cox251b8dd2008-04-30 00:54:12 -0700948 if (bp->status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700949 bp->status &= ~BOARD_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950}
951
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800952/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800953static void isicom_shutdown_port(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700954{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800955 struct isi_board *card = port->card;
956 struct tty_struct *tty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800957
Alan Coxd450b5a2008-10-13 10:39:58 +0100958 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700959
Alan Coxd450b5a2008-10-13 10:39:58 +0100960 if (!(port->port.flags & ASYNC_INITIALIZED)) {
961 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 return;
Alan Coxd450b5a2008-10-13 10:39:58 +0100963 }
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800964
Alan Coxf1d03222008-07-16 21:55:45 +0100965 tty_port_free_xmit_buf(&port->port);
966 port->port.flags &= ~ASYNC_INITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 /* 3rd October 2000 : Vinayak P Risbud */
Alan Coxd450b5a2008-10-13 10:39:58 +0100968 tty_port_tty_set(&port->port, NULL);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800969
Linus Torvalds1da177e2005-04-16 15:20:36 -0700970 /*Fix done by Anil .S on 30-04-2001
971 remote login through isi port has dtr toggle problem
972 due to which the carrier drops before the password prompt
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800973 appears on the remote end. Now we drop the dtr only if the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700974 HUPCL(Hangup on close) flag is set for the tty*/
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800975
976 if (C_HUPCL(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977 /* drop dtr on this port */
978 drop_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800979
980 /* any other port uninits */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981 if (tty)
982 set_bit(TTY_IO_ERROR, &tty->flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800983
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984 if (--card->count < 0) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800985 pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 card->base, card->count);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800987 card->count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800989
Jiri Slabya547dfe2006-01-09 20:54:26 -0800990 /* last port was closed, shutdown that boad too */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800991 if (C_HUPCL(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992 if (!card->count)
993 isicom_shutdown_board(card);
994 }
995}
996
Alan Cox978e5952008-04-30 00:53:59 -0700997static void isicom_flush_buffer(struct tty_struct *tty)
998{
999 struct isi_port *port = tty->driver_data;
1000 struct isi_board *card = port->card;
1001 unsigned long flags;
1002
1003 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
1004 return;
1005
1006 spin_lock_irqsave(&card->card_lock, flags);
1007 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
1008 spin_unlock_irqrestore(&card->card_lock, flags);
1009
1010 tty_wakeup(tty);
1011}
1012
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001013static void isicom_close(struct tty_struct *tty, struct file *filp)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014{
Jiri Slaby8070e352006-01-09 20:54:22 -08001015 struct isi_port *port = tty->driver_data;
Jiri Slabyc387fd82006-11-15 00:30:17 +01001016 struct isi_board *card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001018
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 if (!port)
1020 return;
Jiri Slabyc387fd82006-11-15 00:30:17 +01001021 card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 if (isicom_paranoia_check(port, tty->name, "isicom_close"))
1023 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001024
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001025 pr_dbg("Close start!!!.\n");
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001026
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 spin_lock_irqsave(&card->card_lock, flags);
1028 if (tty_hung_up_p(filp)) {
1029 spin_unlock_irqrestore(&card->card_lock, flags);
1030 return;
1031 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001032
Alan Coxf1d03222008-07-16 21:55:45 +01001033 if (tty->count == 1 && port->port.count != 1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -08001034 printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
1035 "count tty->count = 1 port count = %d.\n",
Alan Coxf1d03222008-07-16 21:55:45 +01001036 card->base, port->port.count);
1037 port->port.count = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 }
Alan Coxf1d03222008-07-16 21:55:45 +01001039 if (--port->port.count < 0) {
Jiri Slabya547dfe2006-01-09 20:54:26 -08001040 printk(KERN_WARNING "ISICOM:(0x%lx) isicom_close: bad port "
1041 "count for channel%d = %d", card->base, port->channel,
Alan Coxf1d03222008-07-16 21:55:45 +01001042 port->port.count);
1043 port->port.count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001045
Alan Coxf1d03222008-07-16 21:55:45 +01001046 if (port->port.count) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047 spin_unlock_irqrestore(&card->card_lock, flags);
1048 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001049 }
Alan Coxf1d03222008-07-16 21:55:45 +01001050 port->port.flags |= ASYNC_CLOSING;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001051 tty->closing = 1;
1052 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001053
Alan Cox44b7d1b2008-07-16 21:57:18 +01001054 if (port->port.closing_wait != ASYNC_CLOSING_WAIT_NONE)
1055 tty_wait_until_sent(tty, port->port.closing_wait);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001056 /* indicate to the card that no more data can be received
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 on this port */
1058 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf1d03222008-07-16 21:55:45 +01001059 if (port->port.flags & ASYNC_INITIALIZED) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060 card->port_status &= ~(1 << port->channel);
1061 outw(card->port_status, card->base + 0x02);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001062 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063 isicom_shutdown_port(port);
1064 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001065
Alan Cox978e5952008-04-30 00:53:59 -07001066 isicom_flush_buffer(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 tty_ldisc_flush(tty);
1068
1069 spin_lock_irqsave(&card->card_lock, flags);
1070 tty->closing = 0;
1071
Alan Coxf1d03222008-07-16 21:55:45 +01001072 if (port->port.blocked_open) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Cox44b7d1b2008-07-16 21:57:18 +01001074 if (port->port.close_delay) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001075 pr_dbg("scheduling until time out.\n");
Jiri Slabya547dfe2006-01-09 20:54:26 -08001076 msleep_interruptible(
Alan Cox44b7d1b2008-07-16 21:57:18 +01001077 jiffies_to_msecs(port->port.close_delay));
Linus Torvalds1da177e2005-04-16 15:20:36 -07001078 }
1079 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf1d03222008-07-16 21:55:45 +01001080 wake_up_interruptible(&port->port.open_wait);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001081 }
Alan Coxf1d03222008-07-16 21:55:45 +01001082 port->port.flags &= ~(ASYNC_NORMAL_ACTIVE | ASYNC_CLOSING);
1083 wake_up_interruptible(&port->port.close_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084 spin_unlock_irqrestore(&card->card_lock, flags);
1085}
1086
1087/* write et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001088static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
1089 int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090{
Jiri Slaby8070e352006-01-09 20:54:22 -08001091 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001092 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 unsigned long flags;
1094 int cnt, total = 0;
1095
1096 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
1097 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001098
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 spin_lock_irqsave(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001100
Alan Cox251b8dd2008-04-30 00:54:12 -07001101 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -08001102 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
1103 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001104 if (cnt <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001106
Alan Coxf1d03222008-07-16 21:55:45 +01001107 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
Jiri Slabya547dfe2006-01-09 20:54:26 -08001108 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
1109 - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110 port->xmit_cnt += cnt;
1111 buf += cnt;
1112 count -= cnt;
1113 total += cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001114 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
1116 port->status |= ISI_TXOK;
1117 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001118 return total;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119}
1120
1121/* put_char et all */
Alan Coxf34d7a52008-04-30 00:54:13 -07001122static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001123{
Jiri Slaby8070e352006-01-09 20:54:22 -08001124 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001125 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001127
Linus Torvalds1da177e2005-04-16 15:20:36 -07001128 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
Alan Coxf34d7a52008-04-30 00:54:13 -07001129 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001130
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -07001132 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
1133 spin_unlock_irqrestore(&card->card_lock, flags);
1134 return 0;
1135 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001136
Alan Coxf1d03222008-07-16 21:55:45 +01001137 port->port.xmit_buf[port->xmit_head++] = ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1139 port->xmit_cnt++;
1140 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -07001141 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142}
1143
1144/* flush_chars et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001145static void isicom_flush_chars(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001146{
Jiri Slaby8070e352006-01-09 20:54:22 -08001147 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001148
Linus Torvalds1da177e2005-04-16 15:20:36 -07001149 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1150 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001151
Jiri Slabya547dfe2006-01-09 20:54:26 -08001152 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
Alan Coxf1d03222008-07-16 21:55:45 +01001153 !port->port.xmit_buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001155
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156 /* this tells the transmitter to consider this port for
1157 data output to the card ... that's the best we can do. */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001158 port->status |= ISI_TXOK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159}
1160
1161/* write_room et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001162static int isicom_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163{
Jiri Slaby8070e352006-01-09 20:54:22 -08001164 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001165 int free;
1166
1167 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1168 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001169
Linus Torvalds1da177e2005-04-16 15:20:36 -07001170 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1171 if (free < 0)
1172 free = 0;
1173 return free;
1174}
1175
1176/* chars_in_buffer et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001177static int isicom_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178{
Jiri Slaby8070e352006-01-09 20:54:22 -08001179 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001180 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1181 return 0;
1182 return port->xmit_cnt;
1183}
1184
1185/* ioctl et all */
Alan Cox6d889722008-07-22 11:18:21 +01001186static int isicom_send_break(struct tty_struct *tty, int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001187{
Alan Cox6d889722008-07-22 11:18:21 +01001188 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001189 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -08001190 unsigned long base = card->base;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001191
Alan Cox6d889722008-07-22 11:18:21 +01001192 if (length == -1)
1193 return -EOPNOTSUPP;
1194
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001195 if (!lock_card(card))
Alan Cox6d889722008-07-22 11:18:21 +01001196 return -EINVAL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001197
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1199 outw((length & 0xff) << 8 | 0x00, base);
1200 outw((length & 0xff00), base);
1201 InterruptTheCard(base);
1202
1203 unlock_card(card);
Alan Cox6d889722008-07-22 11:18:21 +01001204 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205}
1206
1207static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1208{
Jiri Slaby8070e352006-01-09 20:54:22 -08001209 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001210 /* just send the port status */
Jiri Slaby8070e352006-01-09 20:54:22 -08001211 u16 status = port->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001212
1213 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1214 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001215
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1217 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1218 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1219 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1220 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1221 ((status & ISI_RI ) ? TIOCM_RI : 0);
1222}
1223
1224static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001225 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226{
Jiri Slaby8070e352006-01-09 20:54:22 -08001227 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001228 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001229
Linus Torvalds1da177e2005-04-16 15:20:36 -07001230 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1231 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001232
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001233 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 if (set & TIOCM_RTS)
1235 raise_rts(port);
1236 if (set & TIOCM_DTR)
1237 raise_dtr(port);
1238
1239 if (clear & TIOCM_RTS)
1240 drop_rts(port);
1241 if (clear & TIOCM_DTR)
1242 drop_dtr(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001243 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244
1245 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001246}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247
Alan Coxd450b5a2008-10-13 10:39:58 +01001248static int isicom_set_serial_info(struct tty_struct *tty,
1249 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250{
Alan Coxd450b5a2008-10-13 10:39:58 +01001251 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252 struct serial_struct newinfo;
1253 int reconfig_port;
1254
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001255 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256 return -EFAULT;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001257
Alan Cox1eac4942008-04-30 00:53:19 -07001258 lock_kernel();
1259
Alan Coxf1d03222008-07-16 21:55:45 +01001260 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001261 (newinfo.flags & ASYNC_SPD_MASK));
1262
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263 if (!capable(CAP_SYS_ADMIN)) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001264 if ((newinfo.close_delay != port->port.close_delay) ||
1265 (newinfo.closing_wait != port->port.closing_wait) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001266 ((newinfo.flags & ~ASYNC_USR_MASK) !=
Alan Coxf1d03222008-07-16 21:55:45 +01001267 (port->port.flags & ~ASYNC_USR_MASK))) {
Alan Cox1eac4942008-04-30 00:53:19 -07001268 unlock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 return -EPERM;
Alan Cox1eac4942008-04-30 00:53:19 -07001270 }
Alan Coxf1d03222008-07-16 21:55:45 +01001271 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 (newinfo.flags & ASYNC_USR_MASK));
Alan Cox251b8dd2008-04-30 00:54:12 -07001273 } else {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001274 port->port.close_delay = newinfo.close_delay;
1275 port->port.closing_wait = newinfo.closing_wait;
Alan Coxf1d03222008-07-16 21:55:45 +01001276 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277 (newinfo.flags & ASYNC_FLAGS));
1278 }
1279 if (reconfig_port) {
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001280 unsigned long flags;
1281 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001282 isicom_config_port(tty);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001283 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001284 }
Alan Cox1eac4942008-04-30 00:53:19 -07001285 unlock_kernel();
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001286 return 0;
1287}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001289static int isicom_get_serial_info(struct isi_port *port,
1290 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001291{
1292 struct serial_struct out_info;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001293
Alan Cox1eac4942008-04-30 00:53:19 -07001294 lock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 memset(&out_info, 0, sizeof(out_info));
1296/* out_info.type = ? */
1297 out_info.line = port - isi_ports;
1298 out_info.port = port->card->base;
1299 out_info.irq = port->card->irq;
Alan Coxf1d03222008-07-16 21:55:45 +01001300 out_info.flags = port->port.flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301/* out_info.baud_base = ? */
Alan Cox44b7d1b2008-07-16 21:57:18 +01001302 out_info.close_delay = port->port.close_delay;
1303 out_info.closing_wait = port->port.closing_wait;
Alan Cox1eac4942008-04-30 00:53:19 -07001304 unlock_kernel();
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001305 if (copy_to_user(info, &out_info, sizeof(out_info)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001306 return -EFAULT;
1307 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001308}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001310static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
1311 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001312{
Jiri Slaby8070e352006-01-09 20:54:22 -08001313 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001314 void __user *argp = (void __user *)arg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001315
1316 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1317 return -ENODEV;
1318
Alan Cox251b8dd2008-04-30 00:54:12 -07001319 switch (cmd) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001320 case TIOCGSERIAL:
1321 return isicom_get_serial_info(port, argp);
1322
1323 case TIOCSSERIAL:
Alan Coxd450b5a2008-10-13 10:39:58 +01001324 return isicom_set_serial_info(tty, argp);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001325
1326 default:
1327 return -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001328 }
1329 return 0;
1330}
1331
1332/* set_termios et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001333static void isicom_set_termios(struct tty_struct *tty,
Alan Cox606d0992006-12-08 02:38:45 -08001334 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001335{
Jiri Slaby8070e352006-01-09 20:54:22 -08001336 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001337 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001338
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1340 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001341
Linus Torvalds1da177e2005-04-16 15:20:36 -07001342 if (tty->termios->c_cflag == old_termios->c_cflag &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001343 tty->termios->c_iflag == old_termios->c_iflag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001345
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001346 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001347 isicom_config_port(tty);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001348 spin_unlock_irqrestore(&port->card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001349
Linus Torvalds1da177e2005-04-16 15:20:36 -07001350 if ((old_termios->c_cflag & CRTSCTS) &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001351 !(tty->termios->c_cflag & CRTSCTS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001352 tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001353 isicom_start(tty);
1354 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001355}
1356
1357/* throttle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001358static void isicom_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359{
Jiri Slaby8070e352006-01-09 20:54:22 -08001360 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001361 struct isi_board *card = port->card;
1362
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1364 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001365
Linus Torvalds1da177e2005-04-16 15:20:36 -07001366 /* tell the card that this port cannot handle any more data for now */
1367 card->port_status &= ~(1 << port->channel);
1368 outw(card->port_status, card->base + 0x02);
1369}
1370
1371/* unthrottle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001372static void isicom_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373{
Jiri Slaby8070e352006-01-09 20:54:22 -08001374 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001375 struct isi_board *card = port->card;
1376
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1378 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001379
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 /* tell the card that this port is ready to accept more data */
1381 card->port_status |= (1 << port->channel);
1382 outw(card->port_status, card->base + 0x02);
1383}
1384
1385/* stop et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001386static void isicom_stop(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387{
Jiri Slaby8070e352006-01-09 20:54:22 -08001388 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001389
1390 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1391 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001392
Linus Torvalds1da177e2005-04-16 15:20:36 -07001393 /* this tells the transmitter not to consider this port for
1394 data output to the card. */
1395 port->status &= ~ISI_TXOK;
1396}
1397
1398/* start et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001399static void isicom_start(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001400{
Jiri Slaby8070e352006-01-09 20:54:22 -08001401 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001402
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1404 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001405
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 /* this tells the transmitter to consider this port for
1407 data output to the card. */
1408 port->status |= ISI_TXOK;
1409}
1410
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001411static void isicom_hangup(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001412{
Jiri Slaby8070e352006-01-09 20:54:22 -08001413 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001414 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001415
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1417 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001418
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001419 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001420 isicom_shutdown_port(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001421 spin_unlock_irqrestore(&port->card->card_lock, flags);
1422
Alan Coxf1d03222008-07-16 21:55:45 +01001423 port->port.count = 0;
1424 port->port.flags &= ~ASYNC_NORMAL_ACTIVE;
Alan Coxd450b5a2008-10-13 10:39:58 +01001425 tty_port_tty_set(&port->port, NULL);
Alan Coxf1d03222008-07-16 21:55:45 +01001426 wake_up_interruptible(&port->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427}
1428
Linus Torvalds1da177e2005-04-16 15:20:36 -07001429
Jiri Slaby9ac09482006-01-09 20:54:24 -08001430/*
1431 * Driver init and deinit functions
1432 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001433
Jeff Dikeb68e31d2006-10-02 02:17:18 -07001434static const struct tty_operations isicom_ops = {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001435 .open = isicom_open,
1436 .close = isicom_close,
1437 .write = isicom_write,
1438 .put_char = isicom_put_char,
1439 .flush_chars = isicom_flush_chars,
1440 .write_room = isicom_write_room,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001441 .chars_in_buffer = isicom_chars_in_buffer,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001442 .ioctl = isicom_ioctl,
1443 .set_termios = isicom_set_termios,
1444 .throttle = isicom_throttle,
1445 .unthrottle = isicom_unthrottle,
1446 .stop = isicom_stop,
1447 .start = isicom_start,
1448 .hangup = isicom_hangup,
1449 .flush_buffer = isicom_flush_buffer,
1450 .tiocmget = isicom_tiocmget,
1451 .tiocmset = isicom_tiocmset,
Alan Cox6d889722008-07-22 11:18:21 +01001452 .break_ctl = isicom_send_break,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001453};
1454
Jiri Slaby9ac09482006-01-09 20:54:24 -08001455static int __devinit reset_card(struct pci_dev *pdev,
1456 const unsigned int card, unsigned int *signature)
1457{
1458 struct isi_board *board = pci_get_drvdata(pdev);
1459 unsigned long base = board->base;
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001460 unsigned int sig, portcount = 0;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001461 int retval = 0;
1462
1463 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1464 base);
1465
1466 inw(base + 0x8);
1467
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001468 msleep(10);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001469
1470 outw(0, base + 0x8); /* Reset */
1471
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001472 msleep(1000);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001473
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001474 sig = inw(base + 0x4) & 0xff;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001475
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001476 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1477 sig != 0xee) {
1478 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1479 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1480 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
Jiri Slaby18234f82006-12-08 02:38:51 -08001481 retval = -EIO;
1482 goto end;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001483 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001485 msleep(10);
1486
1487 portcount = inw(base + 0x2);
Julia Lawall07fb6f22008-03-04 14:29:17 -08001488 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001489 portcount != 8 && portcount != 16)) {
Joe Perches898eb712007-10-18 03:06:30 -07001490 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001491 card + 1);
1492 retval = -EIO;
1493 goto end;
1494 }
1495
1496 switch (sig) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001497 case 0xa5:
1498 case 0xbb:
1499 case 0xdd:
Jiri Slaby18234f82006-12-08 02:38:51 -08001500 board->port_count = (portcount == 4) ? 4 : 8;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001501 board->shift_count = 12;
1502 break;
1503 case 0xcc:
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001504 case 0xee:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001505 board->port_count = 16;
1506 board->shift_count = 11;
1507 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001509 dev_info(&pdev->dev, "-Done\n");
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001510 *signature = sig;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001511
1512end:
1513 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001514}
1515
Jiri Slabye65c1db2006-01-09 20:54:25 -08001516static int __devinit load_firmware(struct pci_dev *pdev,
1517 const unsigned int index, const unsigned int signature)
1518{
1519 struct isi_board *board = pci_get_drvdata(pdev);
1520 const struct firmware *fw;
1521 unsigned long base = board->base;
1522 unsigned int a;
1523 u16 word_count, status;
1524 int retval = -EIO;
1525 char *name;
1526 u8 *data;
1527
1528 struct stframe {
1529 u16 addr;
1530 u16 count;
1531 u8 data[0];
1532 } *frame;
1533
1534 switch (signature) {
1535 case 0xa5:
1536 name = "isi608.bin";
1537 break;
1538 case 0xbb:
1539 name = "isi608em.bin";
1540 break;
1541 case 0xcc:
1542 name = "isi616em.bin";
1543 break;
1544 case 0xdd:
1545 name = "isi4608.bin";
1546 break;
1547 case 0xee:
1548 name = "isi4616.bin";
1549 break;
1550 default:
1551 dev_err(&pdev->dev, "Unknown signature.\n");
1552 goto end;
Alan Cox251b8dd2008-04-30 00:54:12 -07001553 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001554
1555 retval = request_firmware(&fw, name, &pdev->dev);
1556 if (retval)
1557 goto end;
1558
Jiri Slabye4e04082006-09-30 23:27:50 -07001559 retval = -EIO;
1560
Jiri Slabye65c1db2006-01-09 20:54:25 -08001561 for (frame = (struct stframe *)fw->data;
1562 frame < (struct stframe *)(fw->data + fw->size);
Jiri Slabye4e04082006-09-30 23:27:50 -07001563 frame = (struct stframe *)((u8 *)(frame + 1) +
1564 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001565 if (WaitTillCardIsFree(base))
1566 goto errrelfw;
1567
1568 outw(0xf0, base); /* start upload sequence */
1569 outw(0x00, base);
1570 outw(frame->addr, base); /* lsb of address */
1571
1572 word_count = frame->count / 2 + frame->count % 2;
1573 outw(word_count, base);
1574 InterruptTheCard(base);
1575
1576 udelay(100); /* 0x2f */
1577
1578 if (WaitTillCardIsFree(base))
1579 goto errrelfw;
1580
Alan Cox251b8dd2008-04-30 00:54:12 -07001581 status = inw(base + 0x4);
1582 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001583 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
Joe Perches898eb712007-10-18 03:06:30 -07001584 KERN_WARNING "Address:0x%x\n"
1585 KERN_WARNING "Count:0x%x\n"
1586 KERN_WARNING "Status:0x%x\n",
Jiri Slabye65c1db2006-01-09 20:54:25 -08001587 index + 1, frame->addr, frame->count, status);
1588 goto errrelfw;
1589 }
1590 outsw(base, frame->data, word_count);
1591
1592 InterruptTheCard(base);
1593
1594 udelay(50); /* 0x0f */
1595
1596 if (WaitTillCardIsFree(base))
1597 goto errrelfw;
1598
Alan Cox251b8dd2008-04-30 00:54:12 -07001599 status = inw(base + 0x4);
1600 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001601 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1602 "Status:0x%x\n", index + 1, status);
1603 goto errrelfw;
1604 }
Alan Cox251b8dd2008-04-30 00:54:12 -07001605 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001606
Jiri Slabye65c1db2006-01-09 20:54:25 -08001607/* XXX: should we test it by reading it back and comparing with original like
1608 * in load firmware package? */
Jiri Slabye4e04082006-09-30 23:27:50 -07001609 for (frame = (struct stframe *)fw->data;
1610 frame < (struct stframe *)(fw->data + fw->size);
1611 frame = (struct stframe *)((u8 *)(frame + 1) +
1612 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001613 if (WaitTillCardIsFree(base))
1614 goto errrelfw;
1615
1616 outw(0xf1, base); /* start download sequence */
1617 outw(0x00, base);
1618 outw(frame->addr, base); /* lsb of address */
1619
1620 word_count = (frame->count >> 1) + frame->count % 2;
1621 outw(word_count + 1, base);
1622 InterruptTheCard(base);
1623
1624 udelay(50); /* 0xf */
1625
1626 if (WaitTillCardIsFree(base))
1627 goto errrelfw;
1628
Alan Cox251b8dd2008-04-30 00:54:12 -07001629 status = inw(base + 0x4);
1630 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001631 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
Joe Perches898eb712007-10-18 03:06:30 -07001632 KERN_WARNING "Address:0x%x\n"
1633 KERN_WARNING "Count:0x%x\n"
1634 KERN_WARNING "Status: 0x%x\n",
Jiri Slabye65c1db2006-01-09 20:54:25 -08001635 index + 1, frame->addr, frame->count, status);
1636 goto errrelfw;
1637 }
1638
1639 data = kmalloc(word_count * 2, GFP_KERNEL);
Jiri Slabyf0671372006-12-08 02:38:54 -08001640 if (data == NULL) {
1641 dev_err(&pdev->dev, "Card%d, firmware upload "
1642 "failed, not enough memory\n", index + 1);
1643 goto errrelfw;
1644 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001645 inw(base);
1646 insw(base, data, word_count);
1647 InterruptTheCard(base);
1648
1649 for (a = 0; a < frame->count; a++)
1650 if (data[a] != frame->data[a]) {
1651 kfree(data);
1652 dev_err(&pdev->dev, "Card%d, firmware upload "
1653 "failed\n", index + 1);
1654 goto errrelfw;
1655 }
1656 kfree(data);
1657
1658 udelay(50); /* 0xf */
1659
1660 if (WaitTillCardIsFree(base))
1661 goto errrelfw;
1662
Alan Cox251b8dd2008-04-30 00:54:12 -07001663 status = inw(base + 0x4);
1664 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001665 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1666 "Card Status:0x%x\n", index + 1, status);
1667 goto errrelfw;
1668 }
1669 }
1670
Jiri Slabye4e04082006-09-30 23:27:50 -07001671 /* xfer ctrl */
1672 if (WaitTillCardIsFree(base))
1673 goto errrelfw;
1674
1675 outw(0xf2, base);
1676 outw(0x800, base);
1677 outw(0x0, base);
1678 outw(0x0, base);
1679 InterruptTheCard(base);
1680 outw(0x0, base + 0x4); /* for ISI4608 cards */
1681
Jiri Slabye65c1db2006-01-09 20:54:25 -08001682 board->status |= FIRMWARE_LOADED;
1683 retval = 0;
1684
1685errrelfw:
1686 release_firmware(fw);
1687end:
1688 return retval;
1689}
1690
Jiri Slaby9ac09482006-01-09 20:54:24 -08001691/*
1692 * Insmod can set static symbols so keep these static
1693 */
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001694static unsigned int card_count;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001695
1696static int __devinit isicom_probe(struct pci_dev *pdev,
1697 const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698{
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001699 unsigned int signature, index;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001700 int retval = -EPERM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001701 struct isi_board *board = NULL;
1702
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001703 if (card_count >= BOARD_COUNT)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001704 goto err;
1705
Jiri Slabye1e57702008-07-16 21:52:56 +01001706 retval = pci_enable_device(pdev);
1707 if (retval) {
1708 dev_err(&pdev->dev, "failed to enable\n");
1709 goto err;
1710 }
1711
Jiri Slaby9ac09482006-01-09 20:54:24 -08001712 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1713
1714 /* allot the first empty slot in the array */
1715 for (index = 0; index < BOARD_COUNT; index++)
1716 if (isi_card[index].base == 0) {
1717 board = &isi_card[index];
1718 break;
1719 }
1720
Jiri Slaby938a7022006-12-08 02:38:52 -08001721 board->index = index;
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001722 board->base = pci_resource_start(pdev, 3);
1723 board->irq = pdev->irq;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001724 card_count++;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001725
1726 pci_set_drvdata(pdev, board);
1727
Jiri Slaby78028da2006-12-08 02:38:53 -08001728 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1729 if (retval) {
Jiri Slaby09a4a112006-12-08 02:38:49 -08001730 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1731 "will be disabled.\n", board->base, board->base + 15,
1732 index + 1);
1733 retval = -EBUSY;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001734 goto errdec;
Alan Cox251b8dd2008-04-30 00:54:12 -07001735 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001736
Jiri Slaby09a4a112006-12-08 02:38:49 -08001737 retval = request_irq(board->irq, isicom_interrupt,
1738 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
1739 if (retval < 0) {
1740 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1741 "Card%d will be disabled.\n", board->irq, index + 1);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001742 goto errunrr;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001743 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001744
1745 retval = reset_card(pdev, index, &signature);
1746 if (retval < 0)
1747 goto errunri;
1748
Jiri Slabye65c1db2006-01-09 20:54:25 -08001749 retval = load_firmware(pdev, index, signature);
1750 if (retval < 0)
1751 goto errunri;
1752
Jiri Slaby938a7022006-12-08 02:38:52 -08001753 for (index = 0; index < board->port_count; index++)
1754 tty_register_device(isicom_normal, board->index * 16 + index,
1755 &pdev->dev);
1756
Jiri Slaby9ac09482006-01-09 20:54:24 -08001757 return 0;
1758
1759errunri:
1760 free_irq(board->irq, board);
1761errunrr:
Jiri Slaby78028da2006-12-08 02:38:53 -08001762 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001763errdec:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001764 board->base = 0;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001765 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001766 pci_disable_device(pdev);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001767err:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001768 return retval;
1769}
1770
1771static void __devexit isicom_remove(struct pci_dev *pdev)
1772{
1773 struct isi_board *board = pci_get_drvdata(pdev);
Jiri Slaby938a7022006-12-08 02:38:52 -08001774 unsigned int i;
1775
1776 for (i = 0; i < board->port_count; i++)
1777 tty_unregister_device(isicom_normal, board->index * 16 + i);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001778
1779 free_irq(board->irq, board);
Jiri Slaby78028da2006-12-08 02:38:53 -08001780 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001781 board->base = 0;
1782 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001783 pci_disable_device(pdev);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001784}
1785
Jiri Slabyca262002006-12-08 02:38:50 -08001786static int __init isicom_init(void)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001787{
1788 int retval, idx, channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001789 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001790
Alan Cox251b8dd2008-04-30 00:54:12 -07001791 for (idx = 0; idx < BOARD_COUNT; idx++) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001792 port = &isi_ports[idx * 16];
1793 isi_card[idx].ports = port;
1794 spin_lock_init(&isi_card[idx].card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 for (channel = 0; channel < 16; channel++, port++) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001796 tty_port_init(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001797 port->magic = ISICOM_MAGIC;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001798 port->card = &isi_card[idx];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001799 port->channel = channel;
Alan Cox44b7d1b2008-07-16 21:57:18 +01001800 port->port.close_delay = 50 * HZ/100;
1801 port->port.closing_wait = 3000 * HZ/100;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001802 port->status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001803 /* . . . */
Alan Cox251b8dd2008-04-30 00:54:12 -07001804 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001805 isi_card[idx].base = 0;
1806 isi_card[idx].irq = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001807 }
1808
Jiri Slaby09a4a112006-12-08 02:38:49 -08001809 /* tty driver structure initialization */
1810 isicom_normal = alloc_tty_driver(PORT_COUNT);
1811 if (!isicom_normal) {
1812 retval = -ENOMEM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001813 goto error;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001814 }
1815
1816 isicom_normal->owner = THIS_MODULE;
1817 isicom_normal->name = "ttyM";
1818 isicom_normal->major = ISICOM_NMAJOR;
1819 isicom_normal->minor_start = 0;
1820 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1821 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1822 isicom_normal->init_termios = tty_std_termios;
1823 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1824 CLOCAL;
Jiri Slaby938a7022006-12-08 02:38:52 -08001825 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
Alan Cox6d889722008-07-22 11:18:21 +01001826 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001827 tty_set_operations(isicom_normal, &isicom_ops);
1828
1829 retval = tty_register_driver(isicom_normal);
1830 if (retval) {
1831 pr_dbg("Couldn't register the dialin driver\n");
1832 goto err_puttty;
1833 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001834
Jiri Slaby9ac09482006-01-09 20:54:24 -08001835 retval = pci_register_driver(&isicom_driver);
1836 if (retval < 0) {
1837 printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001838 goto err_unrtty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001839 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840
Jiri Slaby34b55b82006-12-08 02:38:55 -08001841 mod_timer(&tx, jiffies + 1);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001842
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843 return 0;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001844err_unrtty:
1845 tty_unregister_driver(isicom_normal);
1846err_puttty:
1847 put_tty_driver(isicom_normal);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001848error:
1849 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001850}
1851
1852static void __exit isicom_exit(void)
1853{
Jiri Slabye3273252007-07-17 04:05:18 -07001854 del_timer_sync(&tx);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001855
Jiri Slaby9ac09482006-01-09 20:54:24 -08001856 pci_unregister_driver(&isicom_driver);
Jiri Slaby09a4a112006-12-08 02:38:49 -08001857 tty_unregister_driver(isicom_normal);
1858 put_tty_driver(isicom_normal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001859}
1860
Jiri Slabyca262002006-12-08 02:38:50 -08001861module_init(isicom_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001862module_exit(isicom_exit);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001863
1864MODULE_AUTHOR("MultiTech");
1865MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1866MODULE_LICENSE("GPL");