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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 *
Lucas De Marchi970e2482012-03-30 13:37:16 -0700105 * Having installed the cards the module options (/etc/modprobe.d/)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106 *
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
Joe Perchesdb91340b2009-12-09 12:34:16 -0800116#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
117
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#include <linux/module.h>
Jiri Slabye65c1db2006-01-09 20:54:25 -0800119#include <linux/firmware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120#include <linux/kernel.h>
121#include <linux/tty.h>
Alan Cox33f0f882006-01-09 20:54:13 -0800122#include <linux/tty_flip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123#include <linux/termios.h>
124#include <linux/fs.h>
125#include <linux/sched.h>
126#include <linux/serial.h>
127#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128#include <linux/interrupt.h>
129#include <linux/timer.h>
130#include <linux/delay.h>
131#include <linux/ioport.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +0900132#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133
Alan Cox251b8dd2008-04-30 00:54:12 -0700134#include <linux/uaccess.h>
135#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700136
137#include <linux/pci.h>
138
139#include <linux/isicom.h>
140
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800141#define InterruptTheCard(base) outw(0, (base) + 0xc)
142#define ClearInterrupt(base) inw((base) + 0x0a)
143
144#ifdef DEBUG
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800145#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
146#else
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800147#define isicom_paranoia_check(a, b, c) 0
148#endif
149
Jiri Slaby9ac09482006-01-09 20:54:24 -0800150static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
Bill Pembertonae8d8a12012-11-19 13:26:18 -0500151static void isicom_remove(struct pci_dev *);
Jiri Slaby9ac09482006-01-09 20:54:24 -0800152
Linus Torvalds1da177e2005-04-16 15:20:36 -0700153static struct pci_device_id isicom_pci_tbl[] = {
Jiri Slaby9ac09482006-01-09 20:54:24 -0800154 { PCI_DEVICE(VENDOR_ID, 0x2028) },
155 { PCI_DEVICE(VENDOR_ID, 0x2051) },
156 { PCI_DEVICE(VENDOR_ID, 0x2052) },
157 { PCI_DEVICE(VENDOR_ID, 0x2053) },
158 { PCI_DEVICE(VENDOR_ID, 0x2054) },
159 { PCI_DEVICE(VENDOR_ID, 0x2055) },
160 { PCI_DEVICE(VENDOR_ID, 0x2056) },
161 { PCI_DEVICE(VENDOR_ID, 0x2057) },
162 { PCI_DEVICE(VENDOR_ID, 0x2058) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163 { 0 }
164};
165MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
166
Jiri Slaby9ac09482006-01-09 20:54:24 -0800167static struct pci_driver isicom_driver = {
168 .name = "isicom",
169 .id_table = isicom_pci_tbl,
170 .probe = isicom_probe,
Bill Pemberton91116cb2012-11-19 13:21:06 -0500171 .remove = isicom_remove
Jiri Slaby9ac09482006-01-09 20:54:24 -0800172};
173
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174static int prev_card = 3; /* start servicing isi_card[0] */
175static struct tty_driver *isicom_normal;
176
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177static void isicom_tx(unsigned long _data);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800178static void isicom_start(struct tty_struct *tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179
Jiri Slaby34b55b82006-12-08 02:38:55 -0800180static DEFINE_TIMER(tx, isicom_tx, 0, 0);
181
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182/* baud index mappings from linux defns to isi */
183
184static signed char linuxb_to_isib[] = {
Jiri Slaby7edc1362007-02-10 01:44:54 -0800185 -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 -0700186};
187
188struct isi_board {
Jiri Slaby8070e352006-01-09 20:54:22 -0800189 unsigned long base;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700190 int irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191 unsigned char port_count;
192 unsigned short status;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800193 unsigned short port_status; /* each bit for each port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194 unsigned short shift_count;
Alan Cox251b8dd2008-04-30 00:54:12 -0700195 struct isi_port *ports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 signed char count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
198 unsigned long flags;
Jiri Slaby938a7022006-12-08 02:38:52 -0800199 unsigned int index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200};
201
202struct isi_port {
203 unsigned short magic;
Alan Coxf1d03222008-07-16 21:55:45 +0100204 struct tty_port port;
Jiri Slaby8070e352006-01-09 20:54:22 -0800205 u16 channel;
206 u16 status;
Alan Cox251b8dd2008-04-30 00:54:12 -0700207 struct isi_board *card;
Alan Cox251b8dd2008-04-30 00:54:12 -0700208 unsigned char *xmit_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209 int xmit_head;
210 int xmit_tail;
211 int xmit_cnt;
212};
213
214static struct isi_board isi_card[BOARD_COUNT];
215static struct isi_port isi_ports[PORT_COUNT];
216
217/*
218 * Locking functions for card level locking. We need to own both
219 * the kernel lock for the card and have the card in a position that
220 * it wants to talk.
221 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800222
Denys Vlasenko810e20e2015-10-27 17:39:58 +0100223static int WaitTillCardIsFree(unsigned long base)
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800224{
225 unsigned int count = 0;
226 unsigned int a = in_atomic(); /* do we run under spinlock? */
227
228 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
229 if (a)
230 mdelay(1);
231 else
232 msleep(1);
233
234 return !(inw(base + 0xe) & 0x1);
235}
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237static int lock_card(struct isi_board *card)
238{
Jiri Slaby8070e352006-01-09 20:54:22 -0800239 unsigned long base = card->base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700240 unsigned int retries, a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700242 for (retries = 0; retries < 10; retries++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243 spin_lock_irqsave(&card->card_lock, card->flags);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700244 for (a = 0; a < 10; a++) {
245 if (inw(base + 0xe) & 0x1)
246 return 1;
247 udelay(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700248 }
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700249 spin_unlock_irqrestore(&card->card_lock, card->flags);
250 msleep(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 }
Joe Perchese620e542014-11-09 22:46:35 -0800252 pr_warn("Failed to lock Card (0x%lx)\n", card->base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800253
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 */
Denys Vlasenko9428d712015-10-27 18:46:34 +0100283static void drop_dtr(struct isi_port *port)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800284{
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 */
Alan Cox5d951fb2009-01-02 13:45:19 +0000331
Alan Coxfcc8ac12009-06-11 12:24:17 +0100332static void isicom_dtr_rts(struct tty_port *port, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333{
Alan Cox5d951fb2009-01-02 13:45:19 +0000334 struct isi_port *ip = container_of(port, struct isi_port, port);
335 struct isi_board *card = ip->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800336 unsigned long base = card->base;
Alan Cox5d951fb2009-01-02 13:45:19 +0000337 u16 channel = ip->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339 if (!lock_card(card))
340 return;
341
Alan Coxfcc8ac12009-06-11 12:24:17 +0100342 if (on) {
343 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
344 outw(0x0f04, base);
345 InterruptTheCard(base);
346 ip->status |= (ISI_DTR | ISI_RTS);
347 } else {
348 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
349 outw(0x0C04, base);
350 InterruptTheCard(base);
351 ip->status &= ~(ISI_DTR | ISI_RTS);
352 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700353 unlock_card(card);
354}
355
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800356/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800357static void drop_dtr_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700358{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800359 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800360 unsigned long base = card->base;
361 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800363 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364 return;
365
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800366 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 outw(0x0c04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800368 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 port->status &= ~(ISI_RTS | ISI_DTR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370}
371
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372/*
373 * ISICOM Driver specific routines ...
374 *
375 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800376
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800377static inline int __isicom_paranoia_check(struct isi_port const *port,
378 char *name, const char *routine)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 if (!port) {
Joe Perchese620e542014-11-09 22:46:35 -0800381 pr_warn("Warning: bad isicom magic for dev %s in %s\n",
382 name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 return 1;
384 }
385 if (port->magic != ISICOM_MAGIC) {
Joe Perchese620e542014-11-09 22:46:35 -0800386 pr_warn("Warning: NULL isicom port for dev %s in %s\n",
387 name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700388 return 1;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800389 }
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800390
Linus Torvalds1da177e2005-04-16 15:20:36 -0700391 return 0;
392}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800393
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800395 * Transmitter.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396 *
397 * We shovel data into the card buffers on a regular basis. The card
398 * will do the rest of the work for us.
399 */
400
401static void isicom_tx(unsigned long _data)
402{
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700403 unsigned long flags, base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700404 unsigned int retries;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700405 short count = (BOARD_COUNT-1), card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 short txcount, wrd, residue, word_count, cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800407 struct isi_port *port;
408 struct tty_struct *tty;
409
Linus Torvalds1da177e2005-04-16 15:20:36 -0700410 /* find next active board */
411 card = (prev_card + 1) & 0x0003;
Alan Cox251b8dd2008-04-30 00:54:12 -0700412 while (count-- > 0) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800413 if (isi_card[card].status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700414 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800415 card = (card + 1) & 0x0003;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 }
417 if (!(isi_card[card].status & BOARD_ACTIVE))
418 goto sched_again;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800419
Linus Torvalds1da177e2005-04-16 15:20:36 -0700420 prev_card = card;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800421
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 count = isi_card[card].port_count;
423 port = isi_card[card].ports;
424 base = isi_card[card].base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700425
426 spin_lock_irqsave(&isi_card[card].card_lock, flags);
427 for (retries = 0; retries < 100; retries++) {
428 if (inw(base + 0xe) & 0x1)
429 break;
430 udelay(2);
431 }
432 if (retries >= 100)
433 goto unlock;
434
Alan Coxd450b5a2008-10-13 10:39:58 +0100435 tty = tty_port_tty_get(&port->port);
436 if (tty == NULL)
437 goto put_unlock;
438
Alan Cox251b8dd2008-04-30 00:54:12 -0700439 for (; count > 0; count--, port++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 /* port not active or tx disabled to force flow control */
Alan Coxf1d03222008-07-16 21:55:45 +0100441 if (!(port->port.flags & ASYNC_INITIALIZED) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800442 !(port->status & ISI_TXOK))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700443 continue;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800444
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700446 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700448
449 if (!(inw(base + 0x02) & (1 << port->channel)))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800450 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700451
Joe Perchesdb91340b2009-12-09 12:34:16 -0800452 pr_debug("txing %d bytes, port%d.\n",
453 txcount, port->channel + 1);
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800454 outw((port->channel << isi_card[card].shift_count) | txcount,
455 base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 residue = NO;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800457 wrd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800459 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
460 - port->xmit_tail));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 if (residue == YES) {
462 residue = NO;
463 if (cnt > 0) {
Alan Coxf1d03222008-07-16 21:55:45 +0100464 wrd |= (port->port.xmit_buf[port->xmit_tail]
Jiri Slabya547dfe2006-01-09 20:54:26 -0800465 << 8);
466 port->xmit_tail = (port->xmit_tail + 1)
467 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468 port->xmit_cnt--;
469 txcount--;
470 cnt--;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800471 outw(wrd, base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800472 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473 outw(wrd, base);
474 break;
475 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800476 }
Alan Cox251b8dd2008-04-30 00:54:12 -0700477 if (cnt <= 0)
478 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700479 word_count = cnt >> 1;
Alan Coxf1d03222008-07-16 21:55:45 +0100480 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800481 port->xmit_tail = (port->xmit_tail
482 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 txcount -= (word_count << 1);
484 port->xmit_cnt -= (word_count << 1);
485 if (cnt & 0x0001) {
486 residue = YES;
Alan Coxf1d03222008-07-16 21:55:45 +0100487 wrd = port->port.xmit_buf[port->xmit_tail];
Jiri Slabya547dfe2006-01-09 20:54:26 -0800488 port->xmit_tail = (port->xmit_tail + 1)
489 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700490 port->xmit_cnt--;
491 txcount--;
492 }
493 }
494
495 InterruptTheCard(base);
496 if (port->xmit_cnt <= 0)
497 port->status &= ~ISI_TXOK;
498 if (port->xmit_cnt <= WAKEUP_CHARS)
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800499 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800500 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700501
Alan Coxd450b5a2008-10-13 10:39:58 +0100502put_unlock:
503 tty_kref_put(tty);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700504unlock:
505 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800506 /* schedule another tx for hopefully in about 10ms */
507sched_again:
Jiri Slaby34b55b82006-12-08 02:38:55 -0800508 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800509}
510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800512 * Main interrupt handler routine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800514
David Howells7d12e782006-10-05 14:55:46 +0100515static irqreturn_t isicom_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700516{
Jiri Slaby8070e352006-01-09 20:54:22 -0800517 struct isi_board *card = dev_id;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800518 struct isi_port *port;
519 struct tty_struct *tty;
Jiri Slaby8070e352006-01-09 20:54:22 -0800520 unsigned long base;
521 u16 header, word_count, count, channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522 short byte_count;
Alan Cox33f0f882006-01-09 20:54:13 -0800523 unsigned char *rp;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800524
Linus Torvalds1da177e2005-04-16 15:20:36 -0700525 if (!card || !(card->status & FIRMWARE_LOADED))
526 return IRQ_NONE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800527
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528 base = card->base;
Jiri Slabycb4a10c2007-02-10 01:44:53 -0800529
530 /* did the card interrupt us? */
531 if (!(inw(base + 0x0e) & 0x02))
532 return IRQ_NONE;
533
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 spin_lock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800535
Jiri Slaby18234f82006-12-08 02:38:51 -0800536 /*
537 * disable any interrupts from the PCI card and lower the
538 * interrupt line
539 */
540 outw(0x8000, base+0x04);
541 ClearInterrupt(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800542
Linus Torvalds1da177e2005-04-16 15:20:36 -0700543 inw(base); /* get the dummy word out */
544 header = inw(base);
545 channel = (header & 0x7800) >> card->shift_count;
546 byte_count = header & 0xff;
547
548 if (channel + 1 > card->port_count) {
Joe Perchese620e542014-11-09 22:46:35 -0800549 pr_warn("%s(0x%lx): %d(channel) > port_count\n",
550 __func__, base, channel + 1);
Jiri Slaby18234f82006-12-08 02:38:51 -0800551 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 spin_unlock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800553 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 }
555 port = card->ports + channel;
Alan Coxf1d03222008-07-16 21:55:45 +0100556 if (!(port->port.flags & ASYNC_INITIALIZED)) {
Jiri Slaby18234f82006-12-08 02:38:51 -0800557 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800558 spin_unlock(&card->card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800560 }
561
Alan Coxd450b5a2008-10-13 10:39:58 +0100562 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 if (tty == NULL) {
564 word_count = byte_count >> 1;
Alan Cox251b8dd2008-04-30 00:54:12 -0700565 while (byte_count > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 inw(base);
567 byte_count -= 2;
568 }
569 if (byte_count & 0x01)
570 inw(base);
Jiri Slaby18234f82006-12-08 02:38:51 -0800571 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572 spin_unlock(&card->card_lock);
573 return IRQ_HANDLED;
574 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800575
Linus Torvalds1da177e2005-04-16 15:20:36 -0700576 if (header & 0x8000) { /* Status Packet */
577 header = inw(base);
Alan Cox251b8dd2008-04-30 00:54:12 -0700578 switch (header & 0xff) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800579 case 0: /* Change in EIA signals */
Alan Coxf1d03222008-07-16 21:55:45 +0100580 if (port->port.flags & ASYNC_CHECK_CD) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800581 if (port->status & ISI_DCD) {
582 if (!(header & ISI_DCD)) {
583 /* Carrier has been lost */
Joe Perchesdb91340b2009-12-09 12:34:16 -0800584 pr_debug("%s: DCD->low.\n",
585 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700586 port->status &= ~ISI_DCD;
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800587 tty_hangup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800589 } else if (header & ISI_DCD) {
590 /* Carrier has been detected */
Joe Perchesdb91340b2009-12-09 12:34:16 -0800591 pr_debug("%s: DCD->high.\n",
592 __func__);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800593 port->status |= ISI_DCD;
Alan Coxf1d03222008-07-16 21:55:45 +0100594 wake_up_interruptible(&port->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800596 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800597 if (header & ISI_DCD)
598 port->status |= ISI_DCD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700599 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800600 port->status &= ~ISI_DCD;
601 }
602
Huang Shijief21ec3d2012-08-22 22:13:36 -0400603 if (tty_port_cts_enabled(&port->port)) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100604 if (tty->hw_stopped) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800605 if (header & ISI_CTS) {
Jiri Slaby7342c592012-11-15 09:49:48 +0100606 tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800607 /* start tx ing */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800608 port->status |= (ISI_TXOK
609 | ISI_CTS);
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800610 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800611 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800612 } else if (!(header & ISI_CTS)) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100613 tty->hw_stopped = 1;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800614 /* stop tx ing */
615 port->status &= ~(ISI_TXOK | ISI_CTS);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800616 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800617 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800618 if (header & ISI_CTS)
619 port->status |= ISI_CTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700620 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800621 port->status &= ~ISI_CTS;
622 }
623
624 if (header & ISI_DSR)
625 port->status |= ISI_DSR;
626 else
627 port->status &= ~ISI_DSR;
628
629 if (header & ISI_RI)
630 port->status |= ISI_RI;
631 else
632 port->status &= ~ISI_RI;
633
634 break;
635
Jiri Slabya547dfe2006-01-09 20:54:26 -0800636 case 1: /* Received Break !!! */
Jiri Slaby92a19f92013-01-03 15:53:03 +0100637 tty_insert_flip_char(&port->port, 0, TTY_BREAK);
Alan Coxf1d03222008-07-16 21:55:45 +0100638 if (port->port.flags & ASYNC_SAK)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800639 do_SAK(tty);
Jiri Slaby2e124b42013-01-03 15:53:06 +0100640 tty_flip_buffer_push(&port->port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800641 break;
642
643 case 2: /* Statistics */
Joe Perchesdb91340b2009-12-09 12:34:16 -0800644 pr_debug("%s: stats!!!\n", __func__);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800645 break;
646
647 default:
Joe Perchesdb91340b2009-12-09 12:34:16 -0800648 pr_debug("%s: Unknown code in status packet.\n",
649 __func__);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800650 break;
651 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800652 } else { /* Data Packet */
Jiri Slaby2f693352013-01-03 15:53:02 +0100653 count = tty_prepare_flip_string(&port->port, &rp,
654 byte_count & ~1);
Joe Perchesdb91340b2009-12-09 12:34:16 -0800655 pr_debug("%s: Can rx %d of %d bytes.\n",
656 __func__, count, byte_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700657 word_count = count >> 1;
Alan Cox33f0f882006-01-09 20:54:13 -0800658 insw(base, rp, word_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 byte_count -= (word_count << 1);
660 if (count & 0x0001) {
Jiri Slaby92a19f92013-01-03 15:53:03 +0100661 tty_insert_flip_char(&port->port, inw(base) & 0xff,
Jiri Slabya547dfe2006-01-09 20:54:26 -0800662 TTY_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700663 byte_count -= 2;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800664 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 if (byte_count > 0) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800666 pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
667 __func__, base, channel + 1);
Alan Cox251b8dd2008-04-30 00:54:12 -0700668 /* drain out unread xtra data */
669 while (byte_count > 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 inw(base);
671 byte_count -= 2;
672 }
673 }
Jiri Slaby2e124b42013-01-03 15:53:06 +0100674 tty_flip_buffer_push(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700675 }
Jiri Slaby18234f82006-12-08 02:38:51 -0800676 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800677 spin_unlock(&card->card_lock);
Alan Coxd450b5a2008-10-13 10:39:58 +0100678 tty_kref_put(tty);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800679
Linus Torvalds1da177e2005-04-16 15:20:36 -0700680 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800681}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682
Alan Coxd450b5a2008-10-13 10:39:58 +0100683static void isicom_config_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684{
Alan Coxd450b5a2008-10-13 10:39:58 +0100685 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800686 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700687 unsigned long baud;
Jiri Slaby8070e352006-01-09 20:54:22 -0800688 unsigned long base = card->base;
689 u16 channel_setup, channel = port->channel,
690 shift_count = card->shift_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700691 unsigned char flow_ctrl;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800692
Alan Cox251b8dd2008-04-30 00:54:12 -0700693 /* FIXME: Switch to new tty baud API */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700694 baud = C_BAUD(tty);
695 if (baud & CBAUDEX) {
696 baud &= ~CBAUDEX;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800697
Linus Torvalds1da177e2005-04-16 15:20:36 -0700698 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
699 * then the card is programmed for 57.6Kbps or 115Kbps
700 * respectively.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800701 */
702
Jiri Slaby7edc1362007-02-10 01:44:54 -0800703 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
704 if (baud < 1 || baud > 4)
Alan Coxadc8d742012-07-14 15:31:47 +0100705 tty->termios.c_cflag &= ~CBAUDEX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700706 else
707 baud += 15;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800708 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709 if (baud == 15) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800710
711 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
Linus Torvalds1da177e2005-04-16 15:20:36 -0700712 * by the set_serial_info ioctl ... this is done by
713 * the 'setserial' utility.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800714 */
715
Alan Coxf1d03222008-07-16 21:55:45 +0100716 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800717 baud++; /* 57.6 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100718 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
Alan Cox251b8dd2008-04-30 00:54:12 -0700719 baud += 2; /* 115 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100720 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800721 baud += 3; /* 230 kbps*/
Alan Coxf1d03222008-07-16 21:55:45 +0100722 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800723 baud += 4; /* 460 kbps*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 }
725 if (linuxb_to_isib[baud] == -1) {
726 /* hang up */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800727 drop_dtr(port);
728 return;
Alan Cox251b8dd2008-04-30 00:54:12 -0700729 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700730 raise_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800731
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800732 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700733 outw(0x8000 | (channel << shift_count) | 0x03, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
735 channel_setup = 0;
Alan Cox251b8dd2008-04-30 00:54:12 -0700736 switch (C_CSIZE(tty)) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800737 case CS5:
738 channel_setup |= ISICOM_CS5;
739 break;
740 case CS6:
741 channel_setup |= ISICOM_CS6;
742 break;
743 case CS7:
744 channel_setup |= ISICOM_CS7;
745 break;
746 case CS8:
747 channel_setup |= ISICOM_CS8;
748 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800750
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 if (C_CSTOPB(tty))
752 channel_setup |= ISICOM_2SB;
753 if (C_PARENB(tty)) {
754 channel_setup |= ISICOM_EVPAR;
755 if (C_PARODD(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800756 channel_setup |= ISICOM_ODPAR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700757 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800758 outw(channel_setup, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 InterruptTheCard(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800760 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 if (C_CLOCAL(tty))
Alan Coxf1d03222008-07-16 21:55:45 +0100762 port->port.flags &= ~ASYNC_CHECK_CD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 else
Alan Coxf1d03222008-07-16 21:55:45 +0100764 port->port.flags |= ASYNC_CHECK_CD;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800765
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766 /* flow control settings ...*/
767 flow_ctrl = 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100768 port->port.flags &= ~ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700769 if (C_CRTSCTS(tty)) {
Alan Coxf1d03222008-07-16 21:55:45 +0100770 port->port.flags |= ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 flow_ctrl |= ISICOM_CTSRTS;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800772 }
773 if (I_IXON(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700774 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
775 if (I_IXOFF(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800776 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
777
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800778 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700779 outw(0x8000 | (channel << shift_count) | 0x04, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780 outw(flow_ctrl << 8 | 0x05, base);
781 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
782 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800784
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 /* rx enabled -> enable port for rx on the card */
786 if (C_CREAD(tty)) {
787 card->port_status |= (1 << channel);
788 outw(card->port_status, base + 0x02);
789 }
790}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700791
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800792/* open et all */
793
794static inline void isicom_setup_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795{
796 int channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800797 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800798
Alan Coxbaaa08a2009-11-30 13:17:24 +0000799 bp->count++;
Alan Cox6ed847d2009-11-30 13:17:30 +0000800 if (!(bp->status & BOARD_INIT)) {
801 port = bp->ports;
802 for (channel = 0; channel < bp->port_count; channel++, port++)
803 drop_dtr_rts(port);
804 }
805 bp->status |= BOARD_ACTIVE | BOARD_INIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800807
Alan Cox6ed847d2009-11-30 13:17:30 +0000808/* Activate and thus setup board are protected from races against shutdown
809 by the tty_port mutex */
810
Alan Coxbaaa08a2009-11-30 13:17:24 +0000811static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812{
Alan Coxbaaa08a2009-11-30 13:17:24 +0000813 struct isi_port *port = container_of(tport, struct isi_port, port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800814 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700815 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800816
Alan Coxbaaa08a2009-11-30 13:17:24 +0000817 if (tty_port_alloc_xmit_buf(tport) < 0)
Alan Coxf1d03222008-07-16 21:55:45 +0100818 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700819
820 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxbaaa08a2009-11-30 13:17:24 +0000821 isicom_setup_board(card);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800822
Linus Torvalds1da177e2005-04-16 15:20:36 -0700823 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800824
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 /* discard any residual data */
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800826 if (WaitTillCardIsFree(card->base) == 0) {
827 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
828 card->base);
829 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
830 InterruptTheCard(card->base);
831 }
Alan Coxd450b5a2008-10-13 10:39:58 +0100832 isicom_config_port(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800834
835 return 0;
836}
837
Alan Cox31f35932009-01-02 13:45:05 +0000838static int isicom_carrier_raised(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700839{
Alan Cox31f35932009-01-02 13:45:05 +0000840 struct isi_port *ip = container_of(port, struct isi_port, port);
841 return (ip->status & ISI_DCD)?1 : 0;
842}
843
Alan Cox11d85d72009-09-19 13:13:27 -0700844static struct tty_port *isicom_find_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700845{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800846 struct isi_port *port;
847 struct isi_board *card;
Jiri Slaby17c4edf2006-12-08 02:38:57 -0800848 unsigned int board;
Alan Cox11d85d72009-09-19 13:13:27 -0700849 int line = tty->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700850
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851 board = BOARD(line);
852 card = &isi_card[board];
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800853
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 if (!(card->status & FIRMWARE_LOADED))
Alan Cox11d85d72009-09-19 13:13:27 -0700855 return NULL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 /* open on a port greater than the port count for the card !!! */
858 if (line > ((board * 16) + card->port_count - 1))
Alan Cox11d85d72009-09-19 13:13:27 -0700859 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800861 port = &isi_ports[line];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
Alan Cox11d85d72009-09-19 13:13:27 -0700863 return NULL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800864
Alan Cox11d85d72009-09-19 13:13:27 -0700865 return &port->port;
866}
Alan Coxbaaa08a2009-11-30 13:17:24 +0000867
Alan Cox11d85d72009-09-19 13:13:27 -0700868static int isicom_open(struct tty_struct *tty, struct file *filp)
869{
870 struct isi_port *port;
Alan Cox11d85d72009-09-19 13:13:27 -0700871 struct tty_port *tport;
Alan Cox11d85d72009-09-19 13:13:27 -0700872
873 tport = isicom_find_port(tty);
874 if (tport == NULL)
875 return -ENODEV;
876 port = container_of(tport, struct isi_port, port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800877
Alan Coxa2d1e352010-04-23 16:01:18 +0100878 tty->driver_data = port;
Alan Coxbaaa08a2009-11-30 13:17:24 +0000879 return tty_port_open(tport, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800881
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882/* close et all */
883
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800884/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800885static void isicom_shutdown_port(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800887 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888
Linus Torvalds1da177e2005-04-16 15:20:36 -0700889 if (--card->count < 0) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800890 pr_debug("%s: bad board(0x%lx) count %d.\n",
891 __func__, card->base, card->count);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800892 card->count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 }
Alan Coxbaaa08a2009-11-30 13:17:24 +0000894 /* last port was closed, shutdown that board too */
Alan Cox6ed847d2009-11-30 13:17:30 +0000895 if (!card->count)
896 card->status &= BOARD_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897}
898
Alan Cox978e5952008-04-30 00:53:59 -0700899static void isicom_flush_buffer(struct tty_struct *tty)
900{
901 struct isi_port *port = tty->driver_data;
902 struct isi_board *card = port->card;
903 unsigned long flags;
904
905 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
906 return;
907
908 spin_lock_irqsave(&card->card_lock, flags);
909 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
910 spin_unlock_irqrestore(&card->card_lock, flags);
911
912 tty_wakeup(tty);
913}
914
Alan Coxbaaa08a2009-11-30 13:17:24 +0000915static void isicom_shutdown(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916{
Alan Cox6f6412b2009-09-19 13:13:21 -0700917 struct isi_port *ip = container_of(port, struct isi_port, port);
918 struct isi_board *card = ip->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800920
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800921 /* indicate to the card that no more data can be received
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922 on this port */
923 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxbaaa08a2009-11-30 13:17:24 +0000924 card->port_status &= ~(1 << ip->channel);
925 outw(card->port_status, card->base + 0x02);
Alan Coxa6614992009-01-02 13:46:50 +0000926 isicom_shutdown_port(ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Cox2493c0c2009-11-30 13:17:46 +0000928 tty_port_free_xmit_buf(port);
Alan Cox6f6412b2009-09-19 13:13:21 -0700929}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800930
Alan Cox6f6412b2009-09-19 13:13:21 -0700931static void isicom_close(struct tty_struct *tty, struct file *filp)
932{
933 struct isi_port *ip = tty->driver_data;
Alan Coxa2d1e352010-04-23 16:01:18 +0100934 struct tty_port *port;
935
936 if (ip == NULL)
937 return;
938
939 port = &ip->port;
Alan Cox6f6412b2009-09-19 13:13:21 -0700940 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
941 return;
Alan Coxbaaa08a2009-11-30 13:17:24 +0000942 tty_port_close(port, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943}
944
945/* write et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800946static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
947 int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948{
Jiri Slaby8070e352006-01-09 20:54:22 -0800949 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800950 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 unsigned long flags;
952 int cnt, total = 0;
953
954 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
955 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800956
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 spin_lock_irqsave(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800958
Alan Cox251b8dd2008-04-30 00:54:12 -0700959 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800960 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
961 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800962 if (cnt <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700963 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800964
Alan Coxf1d03222008-07-16 21:55:45 +0100965 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800966 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
967 - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 port->xmit_cnt += cnt;
969 buf += cnt;
970 count -= cnt;
971 total += cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800972 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
974 port->status |= ISI_TXOK;
975 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800976 return total;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977}
978
979/* put_char et all */
Alan Coxf34d7a52008-04-30 00:54:13 -0700980static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981{
Jiri Slaby8070e352006-01-09 20:54:22 -0800982 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800983 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700984 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800985
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
Alan Coxf34d7a52008-04-30 00:54:13 -0700987 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800988
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -0700990 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
991 spin_unlock_irqrestore(&card->card_lock, flags);
992 return 0;
993 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800994
Alan Coxf1d03222008-07-16 21:55:45 +0100995 port->port.xmit_buf[port->xmit_head++] = ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700996 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
997 port->xmit_cnt++;
998 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -0700999 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000}
1001
1002/* flush_chars et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001003static void isicom_flush_chars(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004{
Jiri Slaby8070e352006-01-09 20:54:22 -08001005 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001006
Linus Torvalds1da177e2005-04-16 15:20:36 -07001007 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1008 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001009
Jiri Slabya547dfe2006-01-09 20:54:26 -08001010 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
Alan Coxf1d03222008-07-16 21:55:45 +01001011 !port->port.xmit_buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001013
Linus Torvalds1da177e2005-04-16 15:20:36 -07001014 /* this tells the transmitter to consider this port for
1015 data output to the card ... that's the best we can do. */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001016 port->status |= ISI_TXOK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017}
1018
1019/* write_room et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001020static int isicom_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021{
Jiri Slaby8070e352006-01-09 20:54:22 -08001022 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023 int free;
1024
1025 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1026 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001027
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1029 if (free < 0)
1030 free = 0;
1031 return free;
1032}
1033
1034/* chars_in_buffer et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001035static int isicom_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036{
Jiri Slaby8070e352006-01-09 20:54:22 -08001037 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001038 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1039 return 0;
1040 return port->xmit_cnt;
1041}
1042
1043/* ioctl et all */
Alan Cox6d889722008-07-22 11:18:21 +01001044static int isicom_send_break(struct tty_struct *tty, int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045{
Alan Cox6d889722008-07-22 11:18:21 +01001046 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001047 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -08001048 unsigned long base = card->base;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001049
Alan Cox6d889722008-07-22 11:18:21 +01001050 if (length == -1)
1051 return -EOPNOTSUPP;
1052
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001053 if (!lock_card(card))
Alan Cox6d889722008-07-22 11:18:21 +01001054 return -EINVAL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001055
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1057 outw((length & 0xff) << 8 | 0x00, base);
Arnd Bergmannf3e2d562015-01-13 22:59:47 +01001058 outw((length & 0xff00u), base);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001059 InterruptTheCard(base);
1060
1061 unlock_card(card);
Alan Cox6d889722008-07-22 11:18:21 +01001062 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001063}
1064
Alan Cox60b33c12011-02-14 16:26:14 +00001065static int isicom_tiocmget(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001066{
Jiri Slaby8070e352006-01-09 20:54:22 -08001067 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068 /* just send the port status */
Jiri Slaby8070e352006-01-09 20:54:22 -08001069 u16 status = port->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070
1071 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1072 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001073
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1075 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1076 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1077 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1078 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1079 ((status & ISI_RI ) ? TIOCM_RI : 0);
1080}
1081
Alan Cox20b9d172011-02-14 16:26:50 +00001082static int isicom_tiocmset(struct tty_struct *tty,
1083 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001084{
Jiri Slaby8070e352006-01-09 20:54:22 -08001085 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001086 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001087
Linus Torvalds1da177e2005-04-16 15:20:36 -07001088 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1089 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001090
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001091 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092 if (set & TIOCM_RTS)
1093 raise_rts(port);
1094 if (set & TIOCM_DTR)
1095 raise_dtr(port);
1096
1097 if (clear & TIOCM_RTS)
1098 drop_rts(port);
1099 if (clear & TIOCM_DTR)
1100 drop_dtr(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001101 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001102
1103 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001104}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001105
Alan Coxd450b5a2008-10-13 10:39:58 +01001106static int isicom_set_serial_info(struct tty_struct *tty,
1107 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001108{
Alan Coxd450b5a2008-10-13 10:39:58 +01001109 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110 struct serial_struct newinfo;
1111 int reconfig_port;
1112
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001113 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001114 return -EFAULT;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001115
Alan Coxec82db12010-06-01 22:52:44 +02001116 mutex_lock(&port->port.mutex);
Alan Coxf1d03222008-07-16 21:55:45 +01001117 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001118 (newinfo.flags & ASYNC_SPD_MASK));
1119
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 if (!capable(CAP_SYS_ADMIN)) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001121 if ((newinfo.close_delay != port->port.close_delay) ||
1122 (newinfo.closing_wait != port->port.closing_wait) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001123 ((newinfo.flags & ~ASYNC_USR_MASK) !=
Alan Coxf1d03222008-07-16 21:55:45 +01001124 (port->port.flags & ~ASYNC_USR_MASK))) {
Alan Coxec82db12010-06-01 22:52:44 +02001125 mutex_unlock(&port->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 return -EPERM;
Alan Cox1eac4942008-04-30 00:53:19 -07001127 }
Alan Coxf1d03222008-07-16 21:55:45 +01001128 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 (newinfo.flags & ASYNC_USR_MASK));
Alan Cox251b8dd2008-04-30 00:54:12 -07001130 } else {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001131 port->port.close_delay = newinfo.close_delay;
1132 port->port.closing_wait = newinfo.closing_wait;
Alan Coxf1d03222008-07-16 21:55:45 +01001133 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 (newinfo.flags & ASYNC_FLAGS));
1135 }
1136 if (reconfig_port) {
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001137 unsigned long flags;
1138 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001139 isicom_config_port(tty);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001140 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001141 }
Alan Coxec82db12010-06-01 22:52:44 +02001142 mutex_unlock(&port->port.mutex);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001143 return 0;
1144}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001146static int isicom_get_serial_info(struct isi_port *port,
1147 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001148{
1149 struct serial_struct out_info;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001150
Alan Coxec82db12010-06-01 22:52:44 +02001151 mutex_lock(&port->port.mutex);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001152 memset(&out_info, 0, sizeof(out_info));
1153/* out_info.type = ? */
1154 out_info.line = port - isi_ports;
1155 out_info.port = port->card->base;
1156 out_info.irq = port->card->irq;
Alan Coxf1d03222008-07-16 21:55:45 +01001157 out_info.flags = port->port.flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158/* out_info.baud_base = ? */
Alan Cox44b7d1b2008-07-16 21:57:18 +01001159 out_info.close_delay = port->port.close_delay;
1160 out_info.closing_wait = port->port.closing_wait;
Alan Coxec82db12010-06-01 22:52:44 +02001161 mutex_unlock(&port->port.mutex);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001162 if (copy_to_user(info, &out_info, sizeof(out_info)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001163 return -EFAULT;
1164 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001165}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166
Alan Cox6caa76b2011-02-14 16:27:22 +00001167static int isicom_ioctl(struct tty_struct *tty,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001168 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169{
Jiri Slaby8070e352006-01-09 20:54:22 -08001170 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 void __user *argp = (void __user *)arg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172
1173 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1174 return -ENODEV;
1175
Alan Cox251b8dd2008-04-30 00:54:12 -07001176 switch (cmd) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001177 case TIOCGSERIAL:
1178 return isicom_get_serial_info(port, argp);
1179
1180 case TIOCSSERIAL:
Alan Coxd450b5a2008-10-13 10:39:58 +01001181 return isicom_set_serial_info(tty, argp);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001182
1183 default:
1184 return -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185 }
1186 return 0;
1187}
1188
1189/* set_termios et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001190static void isicom_set_termios(struct tty_struct *tty,
Alan Cox606d0992006-12-08 02:38:45 -08001191 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001192{
Jiri Slaby8070e352006-01-09 20:54:22 -08001193 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001194 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001195
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1197 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001198
Alan Coxadc8d742012-07-14 15:31:47 +01001199 if (tty->termios.c_cflag == old_termios->c_cflag &&
1200 tty->termios.c_iflag == old_termios->c_iflag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001201 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001202
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001203 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001204 isicom_config_port(tty);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001205 spin_unlock_irqrestore(&port->card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001206
Peter Hurley9db276f2016-01-10 20:36:15 -08001207 if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001208 tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001209 isicom_start(tty);
1210 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001211}
1212
1213/* throttle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001214static void isicom_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215{
Jiri Slaby8070e352006-01-09 20:54:22 -08001216 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001217 struct isi_board *card = port->card;
1218
Linus Torvalds1da177e2005-04-16 15:20:36 -07001219 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1220 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001221
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222 /* tell the card that this port cannot handle any more data for now */
1223 card->port_status &= ~(1 << port->channel);
1224 outw(card->port_status, card->base + 0x02);
1225}
1226
1227/* unthrottle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001228static void isicom_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001229{
Jiri Slaby8070e352006-01-09 20:54:22 -08001230 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001231 struct isi_board *card = port->card;
1232
Linus Torvalds1da177e2005-04-16 15:20:36 -07001233 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1234 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001235
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236 /* tell the card that this port is ready to accept more data */
1237 card->port_status |= (1 << port->channel);
1238 outw(card->port_status, card->base + 0x02);
1239}
1240
1241/* stop et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001242static void isicom_stop(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243{
Jiri Slaby8070e352006-01-09 20:54:22 -08001244 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245
1246 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1247 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001248
Linus Torvalds1da177e2005-04-16 15:20:36 -07001249 /* this tells the transmitter not to consider this port for
1250 data output to the card. */
1251 port->status &= ~ISI_TXOK;
1252}
1253
1254/* start et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001255static void isicom_start(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256{
Jiri Slaby8070e352006-01-09 20:54:22 -08001257 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001258
Linus Torvalds1da177e2005-04-16 15:20:36 -07001259 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1260 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001261
Linus Torvalds1da177e2005-04-16 15:20:36 -07001262 /* this tells the transmitter to consider this port for
1263 data output to the card. */
1264 port->status |= ISI_TXOK;
1265}
1266
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001267static void isicom_hangup(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001268{
Jiri Slaby8070e352006-01-09 20:54:22 -08001269 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001270
Linus Torvalds1da177e2005-04-16 15:20:36 -07001271 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1272 return;
Alan Cox3e616962009-01-02 13:45:26 +00001273 tty_port_hangup(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274}
1275
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276
Jiri Slaby9ac09482006-01-09 20:54:24 -08001277/*
1278 * Driver init and deinit functions
1279 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280
Jeff Dikeb68e31d2006-10-02 02:17:18 -07001281static const struct tty_operations isicom_ops = {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001282 .open = isicom_open,
1283 .close = isicom_close,
1284 .write = isicom_write,
1285 .put_char = isicom_put_char,
1286 .flush_chars = isicom_flush_chars,
1287 .write_room = isicom_write_room,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001288 .chars_in_buffer = isicom_chars_in_buffer,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001289 .ioctl = isicom_ioctl,
1290 .set_termios = isicom_set_termios,
1291 .throttle = isicom_throttle,
1292 .unthrottle = isicom_unthrottle,
1293 .stop = isicom_stop,
1294 .start = isicom_start,
1295 .hangup = isicom_hangup,
1296 .flush_buffer = isicom_flush_buffer,
1297 .tiocmget = isicom_tiocmget,
1298 .tiocmset = isicom_tiocmset,
Alan Cox6d889722008-07-22 11:18:21 +01001299 .break_ctl = isicom_send_break,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001300};
1301
Alan Cox31f35932009-01-02 13:45:05 +00001302static const struct tty_port_operations isicom_port_ops = {
1303 .carrier_raised = isicom_carrier_raised,
Alan Coxfcc8ac12009-06-11 12:24:17 +01001304 .dtr_rts = isicom_dtr_rts,
Alan Coxbaaa08a2009-11-30 13:17:24 +00001305 .activate = isicom_activate,
1306 .shutdown = isicom_shutdown,
Alan Cox31f35932009-01-02 13:45:05 +00001307};
1308
Bill Pemberton9671f092012-11-19 13:21:50 -05001309static int reset_card(struct pci_dev *pdev,
Jiri Slaby9ac09482006-01-09 20:54:24 -08001310 const unsigned int card, unsigned int *signature)
1311{
1312 struct isi_board *board = pci_get_drvdata(pdev);
1313 unsigned long base = board->base;
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001314 unsigned int sig, portcount = 0;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001315 int retval = 0;
1316
1317 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1318 base);
1319
1320 inw(base + 0x8);
1321
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001322 msleep(10);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001323
1324 outw(0, base + 0x8); /* Reset */
1325
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001326 msleep(1000);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001327
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001328 sig = inw(base + 0x4) & 0xff;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001329
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001330 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1331 sig != 0xee) {
1332 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1333 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1334 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
Jiri Slaby18234f82006-12-08 02:38:51 -08001335 retval = -EIO;
1336 goto end;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001339 msleep(10);
1340
1341 portcount = inw(base + 0x2);
Julia Lawall07fb6f22008-03-04 14:29:17 -08001342 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001343 portcount != 8 && portcount != 16)) {
Joe Perches898eb712007-10-18 03:06:30 -07001344 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001345 card + 1);
1346 retval = -EIO;
1347 goto end;
1348 }
1349
1350 switch (sig) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001351 case 0xa5:
1352 case 0xbb:
1353 case 0xdd:
Jiri Slaby18234f82006-12-08 02:38:51 -08001354 board->port_count = (portcount == 4) ? 4 : 8;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001355 board->shift_count = 12;
1356 break;
1357 case 0xcc:
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001358 case 0xee:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001359 board->port_count = 16;
1360 board->shift_count = 11;
1361 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001362 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001363 dev_info(&pdev->dev, "-Done\n");
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001364 *signature = sig;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001365
1366end:
1367 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001368}
1369
Bill Pemberton9671f092012-11-19 13:21:50 -05001370static int load_firmware(struct pci_dev *pdev,
Jiri Slabye65c1db2006-01-09 20:54:25 -08001371 const unsigned int index, const unsigned int signature)
1372{
1373 struct isi_board *board = pci_get_drvdata(pdev);
1374 const struct firmware *fw;
1375 unsigned long base = board->base;
1376 unsigned int a;
1377 u16 word_count, status;
1378 int retval = -EIO;
1379 char *name;
1380 u8 *data;
1381
1382 struct stframe {
1383 u16 addr;
1384 u16 count;
1385 u8 data[0];
1386 } *frame;
1387
1388 switch (signature) {
1389 case 0xa5:
1390 name = "isi608.bin";
1391 break;
1392 case 0xbb:
1393 name = "isi608em.bin";
1394 break;
1395 case 0xcc:
1396 name = "isi616em.bin";
1397 break;
1398 case 0xdd:
1399 name = "isi4608.bin";
1400 break;
1401 case 0xee:
1402 name = "isi4616.bin";
1403 break;
1404 default:
1405 dev_err(&pdev->dev, "Unknown signature.\n");
1406 goto end;
Alan Cox251b8dd2008-04-30 00:54:12 -07001407 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001408
1409 retval = request_firmware(&fw, name, &pdev->dev);
1410 if (retval)
1411 goto end;
1412
Jiri Slabye4e04082006-09-30 23:27:50 -07001413 retval = -EIO;
1414
Jiri Slabye65c1db2006-01-09 20:54:25 -08001415 for (frame = (struct stframe *)fw->data;
1416 frame < (struct stframe *)(fw->data + fw->size);
Jiri Slabye4e04082006-09-30 23:27:50 -07001417 frame = (struct stframe *)((u8 *)(frame + 1) +
1418 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001419 if (WaitTillCardIsFree(base))
1420 goto errrelfw;
1421
1422 outw(0xf0, base); /* start upload sequence */
1423 outw(0x00, base);
1424 outw(frame->addr, base); /* lsb of address */
1425
1426 word_count = frame->count / 2 + frame->count % 2;
1427 outw(word_count, base);
1428 InterruptTheCard(base);
1429
1430 udelay(100); /* 0x2f */
1431
1432 if (WaitTillCardIsFree(base))
1433 goto errrelfw;
1434
Alan Cox251b8dd2008-04-30 00:54:12 -07001435 status = inw(base + 0x4);
1436 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001437 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
Joe Perchesad361c92009-07-06 13:05:40 -07001438 "Address:0x%x\n"
1439 "Count:0x%x\n"
1440 "Status:0x%x\n",
1441 index + 1, frame->addr, frame->count, status);
Jiri Slabye65c1db2006-01-09 20:54:25 -08001442 goto errrelfw;
1443 }
1444 outsw(base, frame->data, word_count);
1445
1446 InterruptTheCard(base);
1447
1448 udelay(50); /* 0x0f */
1449
1450 if (WaitTillCardIsFree(base))
1451 goto errrelfw;
1452
Alan Cox251b8dd2008-04-30 00:54:12 -07001453 status = inw(base + 0x4);
1454 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001455 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1456 "Status:0x%x\n", index + 1, status);
1457 goto errrelfw;
1458 }
Alan Cox251b8dd2008-04-30 00:54:12 -07001459 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001460
Jiri Slabye65c1db2006-01-09 20:54:25 -08001461/* XXX: should we test it by reading it back and comparing with original like
1462 * in load firmware package? */
Jiri Slabye4e04082006-09-30 23:27:50 -07001463 for (frame = (struct stframe *)fw->data;
1464 frame < (struct stframe *)(fw->data + fw->size);
1465 frame = (struct stframe *)((u8 *)(frame + 1) +
1466 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001467 if (WaitTillCardIsFree(base))
1468 goto errrelfw;
1469
1470 outw(0xf1, base); /* start download sequence */
1471 outw(0x00, base);
1472 outw(frame->addr, base); /* lsb of address */
1473
1474 word_count = (frame->count >> 1) + frame->count % 2;
1475 outw(word_count + 1, base);
1476 InterruptTheCard(base);
1477
1478 udelay(50); /* 0xf */
1479
1480 if (WaitTillCardIsFree(base))
1481 goto errrelfw;
1482
Alan Cox251b8dd2008-04-30 00:54:12 -07001483 status = inw(base + 0x4);
1484 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001485 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
Joe Perchesad361c92009-07-06 13:05:40 -07001486 "Address:0x%x\n"
1487 "Count:0x%x\n"
1488 "Status: 0x%x\n",
1489 index + 1, frame->addr, frame->count, status);
Jiri Slabye65c1db2006-01-09 20:54:25 -08001490 goto errrelfw;
1491 }
1492
1493 data = kmalloc(word_count * 2, GFP_KERNEL);
Jiri Slabyf0671372006-12-08 02:38:54 -08001494 if (data == NULL) {
1495 dev_err(&pdev->dev, "Card%d, firmware upload "
1496 "failed, not enough memory\n", index + 1);
1497 goto errrelfw;
1498 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001499 inw(base);
1500 insw(base, data, word_count);
1501 InterruptTheCard(base);
1502
1503 for (a = 0; a < frame->count; a++)
1504 if (data[a] != frame->data[a]) {
1505 kfree(data);
1506 dev_err(&pdev->dev, "Card%d, firmware upload "
1507 "failed\n", index + 1);
1508 goto errrelfw;
1509 }
1510 kfree(data);
1511
1512 udelay(50); /* 0xf */
1513
1514 if (WaitTillCardIsFree(base))
1515 goto errrelfw;
1516
Alan Cox251b8dd2008-04-30 00:54:12 -07001517 status = inw(base + 0x4);
1518 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001519 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1520 "Card Status:0x%x\n", index + 1, status);
1521 goto errrelfw;
1522 }
1523 }
1524
Jiri Slabye4e04082006-09-30 23:27:50 -07001525 /* xfer ctrl */
1526 if (WaitTillCardIsFree(base))
1527 goto errrelfw;
1528
1529 outw(0xf2, base);
1530 outw(0x800, base);
1531 outw(0x0, base);
1532 outw(0x0, base);
1533 InterruptTheCard(base);
1534 outw(0x0, base + 0x4); /* for ISI4608 cards */
1535
Jiri Slabye65c1db2006-01-09 20:54:25 -08001536 board->status |= FIRMWARE_LOADED;
1537 retval = 0;
1538
1539errrelfw:
1540 release_firmware(fw);
1541end:
1542 return retval;
1543}
1544
Jiri Slaby9ac09482006-01-09 20:54:24 -08001545/*
1546 * Insmod can set static symbols so keep these static
1547 */
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001548static unsigned int card_count;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001549
Bill Pemberton9671f092012-11-19 13:21:50 -05001550static int isicom_probe(struct pci_dev *pdev,
Jiri Slaby9ac09482006-01-09 20:54:24 -08001551 const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552{
Jiri Slaby9653a692009-06-17 16:27:48 -07001553 unsigned int uninitialized_var(signature), index;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001554 int retval = -EPERM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001555 struct isi_board *board = NULL;
1556
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001557 if (card_count >= BOARD_COUNT)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001558 goto err;
1559
Jiri Slabye1e57702008-07-16 21:52:56 +01001560 retval = pci_enable_device(pdev);
1561 if (retval) {
1562 dev_err(&pdev->dev, "failed to enable\n");
1563 goto err;
1564 }
1565
Jiri Slaby9ac09482006-01-09 20:54:24 -08001566 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1567
1568 /* allot the first empty slot in the array */
Dan Carpenter26e1e8d2010-05-07 10:30:41 +02001569 for (index = 0; index < BOARD_COUNT; index++) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001570 if (isi_card[index].base == 0) {
1571 board = &isi_card[index];
1572 break;
1573 }
Dan Carpenter26e1e8d2010-05-07 10:30:41 +02001574 }
1575 if (index == BOARD_COUNT) {
1576 retval = -ENODEV;
1577 goto err_disable;
1578 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001579
Jiri Slaby938a7022006-12-08 02:38:52 -08001580 board->index = index;
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001581 board->base = pci_resource_start(pdev, 3);
1582 board->irq = pdev->irq;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001583 card_count++;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001584
1585 pci_set_drvdata(pdev, board);
1586
Jiri Slaby78028da2006-12-08 02:38:53 -08001587 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1588 if (retval) {
Jiri Slaby09a4a112006-12-08 02:38:49 -08001589 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1590 "will be disabled.\n", board->base, board->base + 15,
1591 index + 1);
1592 retval = -EBUSY;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001593 goto errdec;
Alan Cox251b8dd2008-04-30 00:54:12 -07001594 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001595
Jiri Slaby09a4a112006-12-08 02:38:49 -08001596 retval = request_irq(board->irq, isicom_interrupt,
Yong Zhang9cfb5c02011-09-22 16:59:15 +08001597 IRQF_SHARED, ISICOM_NAME, board);
Jiri Slaby09a4a112006-12-08 02:38:49 -08001598 if (retval < 0) {
1599 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1600 "Card%d will be disabled.\n", board->irq, index + 1);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001601 goto errunrr;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001602 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001603
1604 retval = reset_card(pdev, index, &signature);
1605 if (retval < 0)
1606 goto errunri;
1607
Jiri Slabye65c1db2006-01-09 20:54:25 -08001608 retval = load_firmware(pdev, index, signature);
1609 if (retval < 0)
1610 goto errunri;
1611
Jiri Slabyd0f59142012-11-15 09:49:55 +01001612 for (index = 0; index < board->port_count; index++) {
1613 struct tty_port *tport = &board->ports[index].port;
1614 tty_port_init(tport);
1615 tport->ops = &isicom_port_ops;
1616 tport->close_delay = 50 * HZ/100;
1617 tport->closing_wait = 3000 * HZ/100;
1618 tty_port_register_device(tport, isicom_normal,
1619 board->index * 16 + index, &pdev->dev);
1620 }
Jiri Slaby938a7022006-12-08 02:38:52 -08001621
Jiri Slaby9ac09482006-01-09 20:54:24 -08001622 return 0;
1623
1624errunri:
1625 free_irq(board->irq, board);
1626errunrr:
Jiri Slaby78028da2006-12-08 02:38:53 -08001627 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001628errdec:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001629 board->base = 0;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001630 card_count--;
Dan Carpenter26e1e8d2010-05-07 10:30:41 +02001631err_disable:
Jiri Slabye1e57702008-07-16 21:52:56 +01001632 pci_disable_device(pdev);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001633err:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001634 return retval;
1635}
1636
Bill Pembertonae8d8a12012-11-19 13:26:18 -05001637static void isicom_remove(struct pci_dev *pdev)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001638{
1639 struct isi_board *board = pci_get_drvdata(pdev);
Jiri Slaby938a7022006-12-08 02:38:52 -08001640 unsigned int i;
1641
Jiri Slabyd0f59142012-11-15 09:49:55 +01001642 for (i = 0; i < board->port_count; i++) {
Jiri Slaby938a7022006-12-08 02:38:52 -08001643 tty_unregister_device(isicom_normal, board->index * 16 + i);
Jiri Slabyd0f59142012-11-15 09:49:55 +01001644 tty_port_destroy(&board->ports[i].port);
1645 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001646
1647 free_irq(board->irq, board);
Jiri Slaby78028da2006-12-08 02:38:53 -08001648 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001649 board->base = 0;
1650 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001651 pci_disable_device(pdev);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001652}
1653
Jiri Slabyca262002006-12-08 02:38:50 -08001654static int __init isicom_init(void)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001655{
1656 int retval, idx, channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001657 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001658
Alan Cox251b8dd2008-04-30 00:54:12 -07001659 for (idx = 0; idx < BOARD_COUNT; idx++) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001660 port = &isi_ports[idx * 16];
1661 isi_card[idx].ports = port;
1662 spin_lock_init(&isi_card[idx].card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001663 for (channel = 0; channel < 16; channel++, port++) {
1664 port->magic = ISICOM_MAGIC;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001665 port->card = &isi_card[idx];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001666 port->channel = channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001667 port->status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001668 /* . . . */
Alan Cox251b8dd2008-04-30 00:54:12 -07001669 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001670 isi_card[idx].base = 0;
1671 isi_card[idx].irq = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001672 }
1673
Jiri Slaby09a4a112006-12-08 02:38:49 -08001674 /* tty driver structure initialization */
1675 isicom_normal = alloc_tty_driver(PORT_COUNT);
1676 if (!isicom_normal) {
1677 retval = -ENOMEM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001678 goto error;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001679 }
1680
Jiri Slaby09a4a112006-12-08 02:38:49 -08001681 isicom_normal->name = "ttyM";
1682 isicom_normal->major = ISICOM_NMAJOR;
1683 isicom_normal->minor_start = 0;
1684 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1685 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1686 isicom_normal->init_termios = tty_std_termios;
1687 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1688 CLOCAL;
Jiri Slaby938a7022006-12-08 02:38:52 -08001689 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
Alan Cox6d889722008-07-22 11:18:21 +01001690 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001691 tty_set_operations(isicom_normal, &isicom_ops);
1692
1693 retval = tty_register_driver(isicom_normal);
1694 if (retval) {
Joe Perchesdb91340b2009-12-09 12:34:16 -08001695 pr_debug("Couldn't register the dialin driver\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001696 goto err_puttty;
1697 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001698
Jiri Slaby9ac09482006-01-09 20:54:24 -08001699 retval = pci_register_driver(&isicom_driver);
1700 if (retval < 0) {
Joe Perchesdb91340b2009-12-09 12:34:16 -08001701 pr_err("Unable to register pci driver.\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001702 goto err_unrtty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001703 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704
Jiri Slaby34b55b82006-12-08 02:38:55 -08001705 mod_timer(&tx, jiffies + 1);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001706
Linus Torvalds1da177e2005-04-16 15:20:36 -07001707 return 0;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001708err_unrtty:
1709 tty_unregister_driver(isicom_normal);
1710err_puttty:
1711 put_tty_driver(isicom_normal);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001712error:
1713 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001714}
1715
1716static void __exit isicom_exit(void)
1717{
Jiri Slabye3273252007-07-17 04:05:18 -07001718 del_timer_sync(&tx);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001719
Jiri Slaby9ac09482006-01-09 20:54:24 -08001720 pci_unregister_driver(&isicom_driver);
Jiri Slaby09a4a112006-12-08 02:38:49 -08001721 tty_unregister_driver(isicom_normal);
1722 put_tty_driver(isicom_normal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001723}
1724
Jiri Slabyca262002006-12-08 02:38:50 -08001725module_init(isicom_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001726module_exit(isicom_exit);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001727
1728MODULE_AUTHOR("MultiTech");
1729MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1730MODULE_LICENSE("GPL");
Ben Hutchingse6c4ef92010-01-13 23:34:18 +00001731MODULE_FIRMWARE("isi608.bin");
1732MODULE_FIRMWARE("isi608em.bin");
1733MODULE_FIRMWARE("isi616em.bin");
1734MODULE_FIRMWARE("isi4608.bin");
1735MODULE_FIRMWARE("isi4616.bin");