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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 *
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
Joe Perchesdb913402009-12-09 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>
Alexey Dobriyan405f5572009-07-11 22:08:37 +0400127#include <linux/smp_lock.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700128#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129#include <linux/interrupt.h>
130#include <linux/timer.h>
131#include <linux/delay.h>
132#include <linux/ioport.h>
Tejun Heo5a0e3ad2010-03-24 17:04:11 +0900133#include <linux/slab.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
Alan Cox251b8dd2008-04-30 00:54:12 -0700135#include <linux/uaccess.h>
136#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137#include <asm/system.h>
138
139#include <linux/pci.h>
140
141#include <linux/isicom.h>
142
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800143#define InterruptTheCard(base) outw(0, (base) + 0xc)
144#define ClearInterrupt(base) inw((base) + 0x0a)
145
146#ifdef DEBUG
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800147#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
148#else
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800149#define isicom_paranoia_check(a, b, c) 0
150#endif
151
Jiri Slaby9ac09482006-01-09 20:54:24 -0800152static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
153static void __devexit isicom_remove(struct pci_dev *);
154
Linus Torvalds1da177e2005-04-16 15:20:36 -0700155static struct pci_device_id isicom_pci_tbl[] = {
Jiri Slaby9ac09482006-01-09 20:54:24 -0800156 { PCI_DEVICE(VENDOR_ID, 0x2028) },
157 { PCI_DEVICE(VENDOR_ID, 0x2051) },
158 { PCI_DEVICE(VENDOR_ID, 0x2052) },
159 { PCI_DEVICE(VENDOR_ID, 0x2053) },
160 { PCI_DEVICE(VENDOR_ID, 0x2054) },
161 { PCI_DEVICE(VENDOR_ID, 0x2055) },
162 { PCI_DEVICE(VENDOR_ID, 0x2056) },
163 { PCI_DEVICE(VENDOR_ID, 0x2057) },
164 { PCI_DEVICE(VENDOR_ID, 0x2058) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700165 { 0 }
166};
167MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
168
Jiri Slaby9ac09482006-01-09 20:54:24 -0800169static struct pci_driver isicom_driver = {
170 .name = "isicom",
171 .id_table = isicom_pci_tbl,
172 .probe = isicom_probe,
173 .remove = __devexit_p(isicom_remove)
174};
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176static int prev_card = 3; /* start servicing isi_card[0] */
177static struct tty_driver *isicom_normal;
178
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179static void isicom_tx(unsigned long _data);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800180static void isicom_start(struct tty_struct *tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
Jiri Slaby34b55b82006-12-08 02:38:55 -0800182static DEFINE_TIMER(tx, isicom_tx, 0, 0);
183
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184/* baud index mappings from linux defns to isi */
185
186static signed char linuxb_to_isib[] = {
Jiri Slaby7edc1362007-02-10 01:44:54 -0800187 -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 -0700188};
189
190struct isi_board {
Jiri Slaby8070e352006-01-09 20:54:22 -0800191 unsigned long base;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700192 int irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 unsigned char port_count;
194 unsigned short status;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800195 unsigned short port_status; /* each bit for each port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 unsigned short shift_count;
Alan Cox251b8dd2008-04-30 00:54:12 -0700197 struct isi_port *ports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 signed char count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
200 unsigned long flags;
Jiri Slaby938a7022006-12-08 02:38:52 -0800201 unsigned int index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202};
203
204struct isi_port {
205 unsigned short magic;
Alan Coxf1d03222008-07-16 21:55:45 +0100206 struct tty_port port;
Jiri Slaby8070e352006-01-09 20:54:22 -0800207 u16 channel;
208 u16 status;
Alan Cox251b8dd2008-04-30 00:54:12 -0700209 struct isi_board *card;
Alan Cox251b8dd2008-04-30 00:54:12 -0700210 unsigned char *xmit_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211 int xmit_head;
212 int xmit_tail;
213 int xmit_cnt;
214};
215
216static struct isi_board isi_card[BOARD_COUNT];
217static struct isi_port isi_ports[PORT_COUNT];
218
219/*
220 * Locking functions for card level locking. We need to own both
221 * the kernel lock for the card and have the card in a position that
222 * it wants to talk.
223 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800224
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700225static inline int WaitTillCardIsFree(unsigned long base)
Jiri Slabycfe7c092006-12-29 16:48:00 -0800226{
227 unsigned int count = 0;
228 unsigned int a = in_atomic(); /* do we run under spinlock? */
229
230 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
231 if (a)
232 mdelay(1);
233 else
234 msleep(1);
235
236 return !(inw(base + 0xe) & 0x1);
237}
238
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239static int lock_card(struct isi_board *card)
240{
Jiri Slaby8070e352006-01-09 20:54:22 -0800241 unsigned long base = card->base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700242 unsigned int retries, a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700243
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700244 for (retries = 0; retries < 10; retries++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245 spin_lock_irqsave(&card->card_lock, card->flags);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700246 for (a = 0; a < 10; a++) {
247 if (inw(base + 0xe) & 0x1)
248 return 1;
249 udelay(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 }
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700251 spin_unlock_irqrestore(&card->card_lock, card->flags);
252 msleep(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253 }
Joe Perchesdb913402009-12-09 12:34:16 -0800254 pr_warning("Failed to lock Card (0x%lx)\n", card->base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800255
Adrian Bunk04187262006-06-30 18:23:04 +0200256 return 0; /* Failed to acquire the card! */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257}
258
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259static void unlock_card(struct isi_board *card)
260{
261 spin_unlock_irqrestore(&card->card_lock, card->flags);
262}
263
264/*
265 * ISI Card specific ops ...
266 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800267
Jiri Slabycfe7c092006-12-29 16:48:00 -0800268/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800269static void raise_dtr(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800271 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800272 unsigned long base = card->base;
273 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274
Jiri Slabycfe7c092006-12-29 16:48:00 -0800275 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 return;
277
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800278 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279 outw(0x0504, base);
280 InterruptTheCard(base);
281 port->status |= ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700282}
283
Jiri Slabycfe7c092006-12-29 16:48:00 -0800284/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800285static inline void drop_dtr(struct isi_port *port)
286{
287 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800288 unsigned long base = card->base;
289 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290
Jiri Slabycfe7c092006-12-29 16:48:00 -0800291 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700292 return;
293
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800294 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 outw(0x0404, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800296 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297 port->status &= ~ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298}
299
Jiri Slabycfe7c092006-12-29 16:48:00 -0800300/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800301static inline void raise_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700302{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800303 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800304 unsigned long base = card->base;
305 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306
Jiri Slabycfe7c092006-12-29 16:48:00 -0800307 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 return;
309
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800310 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 outw(0x0a04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800312 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 port->status |= ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314}
Jiri Slabycfe7c092006-12-29 16:48:00 -0800315
316/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800317static inline void drop_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800319 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800320 unsigned long base = card->base;
321 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322
Jiri Slabycfe7c092006-12-29 16:48:00 -0800323 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700324 return;
325
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800326 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 outw(0x0804, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800328 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 port->status &= ~ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700330}
331
Jiri Slabycfe7c092006-12-29 16:48:00 -0800332/* card->lock MUST NOT be held */
Alan Cox5d951fb2009-01-02 13:45:19 +0000333
Alan Coxfcc8ac12009-06-11 12:24:17 +0100334static void isicom_dtr_rts(struct tty_port *port, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700335{
Alan Cox5d951fb2009-01-02 13:45:19 +0000336 struct isi_port *ip = container_of(port, struct isi_port, port);
337 struct isi_board *card = ip->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800338 unsigned long base = card->base;
Alan Cox5d951fb2009-01-02 13:45:19 +0000339 u16 channel = ip->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340
341 if (!lock_card(card))
342 return;
343
Alan Coxfcc8ac12009-06-11 12:24:17 +0100344 if (on) {
345 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
346 outw(0x0f04, base);
347 InterruptTheCard(base);
348 ip->status |= (ISI_DTR | ISI_RTS);
349 } else {
350 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
351 outw(0x0C04, base);
352 InterruptTheCard(base);
353 ip->status &= ~(ISI_DTR | ISI_RTS);
354 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355 unlock_card(card);
356}
357
Jiri Slabycfe7c092006-12-29 16:48:00 -0800358/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800359static void drop_dtr_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800361 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800362 unsigned long base = card->base;
363 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700364
Jiri Slabycfe7c092006-12-29 16:48:00 -0800365 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700366 return;
367
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800368 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700369 outw(0x0c04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800370 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 port->status &= ~(ISI_RTS | ISI_DTR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372}
373
Linus Torvalds1da177e2005-04-16 15:20:36 -0700374/*
375 * ISICOM Driver specific routines ...
376 *
377 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800378
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800379static inline int __isicom_paranoia_check(struct isi_port const *port,
380 char *name, const char *routine)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 if (!port) {
Joe Perchesdb913402009-12-09 12:34:16 -0800383 pr_warning("Warning: bad isicom magic for dev %s in %s.\n",
384 name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700385 return 1;
386 }
387 if (port->magic != ISICOM_MAGIC) {
Joe Perchesdb913402009-12-09 12:34:16 -0800388 pr_warning("Warning: NULL isicom port for dev %s in %s.\n",
389 name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 return 1;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800391 }
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800392
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 return 0;
394}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800395
Linus Torvalds1da177e2005-04-16 15:20:36 -0700396/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800397 * Transmitter.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 *
399 * We shovel data into the card buffers on a regular basis. The card
400 * will do the rest of the work for us.
401 */
402
403static void isicom_tx(unsigned long _data)
404{
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700405 unsigned long flags, base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700406 unsigned int retries;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700407 short count = (BOARD_COUNT-1), card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700408 short txcount, wrd, residue, word_count, cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800409 struct isi_port *port;
410 struct tty_struct *tty;
411
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 /* find next active board */
413 card = (prev_card + 1) & 0x0003;
Alan Cox251b8dd2008-04-30 00:54:12 -0700414 while (count-- > 0) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800415 if (isi_card[card].status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800417 card = (card + 1) & 0x0003;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 }
419 if (!(isi_card[card].status & BOARD_ACTIVE))
420 goto sched_again;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800421
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422 prev_card = card;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800423
Linus Torvalds1da177e2005-04-16 15:20:36 -0700424 count = isi_card[card].port_count;
425 port = isi_card[card].ports;
426 base = isi_card[card].base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700427
428 spin_lock_irqsave(&isi_card[card].card_lock, flags);
429 for (retries = 0; retries < 100; retries++) {
430 if (inw(base + 0xe) & 0x1)
431 break;
432 udelay(2);
433 }
434 if (retries >= 100)
435 goto unlock;
436
Alan Coxd450b5a2008-10-13 10:39:58 +0100437 tty = tty_port_tty_get(&port->port);
438 if (tty == NULL)
439 goto put_unlock;
440
Alan Cox251b8dd2008-04-30 00:54:12 -0700441 for (; count > 0; count--, port++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 /* port not active or tx disabled to force flow control */
Alan Coxf1d03222008-07-16 21:55:45 +0100443 if (!(port->port.flags & ASYNC_INITIALIZED) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800444 !(port->status & ISI_TXOK))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700445 continue;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800446
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700448 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700450
451 if (!(inw(base + 0x02) & (1 << port->channel)))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800452 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700453
Joe Perchesdb913402009-12-09 12:34:16 -0800454 pr_debug("txing %d bytes, port%d.\n",
455 txcount, port->channel + 1);
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800456 outw((port->channel << isi_card[card].shift_count) | txcount,
457 base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700458 residue = NO;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800459 wrd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800461 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
462 - port->xmit_tail));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 if (residue == YES) {
464 residue = NO;
465 if (cnt > 0) {
Alan Coxf1d03222008-07-16 21:55:45 +0100466 wrd |= (port->port.xmit_buf[port->xmit_tail]
Jiri Slabya547dfe2006-01-09 20:54:26 -0800467 << 8);
468 port->xmit_tail = (port->xmit_tail + 1)
469 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470 port->xmit_cnt--;
471 txcount--;
472 cnt--;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800473 outw(wrd, base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800474 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475 outw(wrd, base);
476 break;
477 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800478 }
Alan Cox251b8dd2008-04-30 00:54:12 -0700479 if (cnt <= 0)
480 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700481 word_count = cnt >> 1;
Alan Coxf1d03222008-07-16 21:55:45 +0100482 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800483 port->xmit_tail = (port->xmit_tail
484 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700485 txcount -= (word_count << 1);
486 port->xmit_cnt -= (word_count << 1);
487 if (cnt & 0x0001) {
488 residue = YES;
Alan Coxf1d03222008-07-16 21:55:45 +0100489 wrd = port->port.xmit_buf[port->xmit_tail];
Jiri Slabya547dfe2006-01-09 20:54:26 -0800490 port->xmit_tail = (port->xmit_tail + 1)
491 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492 port->xmit_cnt--;
493 txcount--;
494 }
495 }
496
497 InterruptTheCard(base);
498 if (port->xmit_cnt <= 0)
499 port->status &= ~ISI_TXOK;
500 if (port->xmit_cnt <= WAKEUP_CHARS)
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800501 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800502 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700503
Alan Coxd450b5a2008-10-13 10:39:58 +0100504put_unlock:
505 tty_kref_put(tty);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700506unlock:
507 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800508 /* schedule another tx for hopefully in about 10ms */
509sched_again:
Jiri Slaby34b55b82006-12-08 02:38:55 -0800510 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800511}
512
Linus Torvalds1da177e2005-04-16 15:20:36 -0700513/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800514 * Main interrupt handler routine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800516
David Howells7d12e782006-10-05 14:55:46 +0100517static irqreturn_t isicom_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518{
Jiri Slaby8070e352006-01-09 20:54:22 -0800519 struct isi_board *card = dev_id;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800520 struct isi_port *port;
521 struct tty_struct *tty;
Jiri Slaby8070e352006-01-09 20:54:22 -0800522 unsigned long base;
523 u16 header, word_count, count, channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524 short byte_count;
Alan Cox33f0f882006-01-09 20:54:13 -0800525 unsigned char *rp;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800526
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 if (!card || !(card->status & FIRMWARE_LOADED))
528 return IRQ_NONE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800529
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530 base = card->base;
Jiri Slabycb4a10c2007-02-10 01:44:53 -0800531
532 /* did the card interrupt us? */
533 if (!(inw(base + 0x0e) & 0x02))
534 return IRQ_NONE;
535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 spin_lock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800537
Jiri Slaby18234f82006-12-08 02:38:51 -0800538 /*
539 * disable any interrupts from the PCI card and lower the
540 * interrupt line
541 */
542 outw(0x8000, base+0x04);
543 ClearInterrupt(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800544
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 inw(base); /* get the dummy word out */
546 header = inw(base);
547 channel = (header & 0x7800) >> card->shift_count;
548 byte_count = header & 0xff;
549
550 if (channel + 1 > card->port_count) {
Joe Perchesdb913402009-12-09 12:34:16 -0800551 pr_warning("%s(0x%lx): %d(channel) > port_count.\n",
552 __func__, base, channel+1);
Jiri Slaby18234f82006-12-08 02:38:51 -0800553 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700554 spin_unlock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800555 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 }
557 port = card->ports + channel;
Alan Coxf1d03222008-07-16 21:55:45 +0100558 if (!(port->port.flags & ASYNC_INITIALIZED)) {
Jiri Slaby18234f82006-12-08 02:38:51 -0800559 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800560 spin_unlock(&card->card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700561 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800562 }
563
Alan Coxd450b5a2008-10-13 10:39:58 +0100564 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 if (tty == NULL) {
566 word_count = byte_count >> 1;
Alan Cox251b8dd2008-04-30 00:54:12 -0700567 while (byte_count > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 inw(base);
569 byte_count -= 2;
570 }
571 if (byte_count & 0x01)
572 inw(base);
Jiri Slaby18234f82006-12-08 02:38:51 -0800573 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700574 spin_unlock(&card->card_lock);
575 return IRQ_HANDLED;
576 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800577
Linus Torvalds1da177e2005-04-16 15:20:36 -0700578 if (header & 0x8000) { /* Status Packet */
579 header = inw(base);
Alan Cox251b8dd2008-04-30 00:54:12 -0700580 switch (header & 0xff) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800581 case 0: /* Change in EIA signals */
Alan Coxf1d03222008-07-16 21:55:45 +0100582 if (port->port.flags & ASYNC_CHECK_CD) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800583 if (port->status & ISI_DCD) {
584 if (!(header & ISI_DCD)) {
585 /* Carrier has been lost */
Joe Perchesdb913402009-12-09 12:34:16 -0800586 pr_debug("%s: DCD->low.\n",
587 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700588 port->status &= ~ISI_DCD;
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800589 tty_hangup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800591 } else if (header & ISI_DCD) {
592 /* Carrier has been detected */
Joe Perchesdb913402009-12-09 12:34:16 -0800593 pr_debug("%s: DCD->high.\n",
594 __func__);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800595 port->status |= ISI_DCD;
Alan Coxf1d03222008-07-16 21:55:45 +0100596 wake_up_interruptible(&port->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700597 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800598 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800599 if (header & ISI_DCD)
600 port->status |= ISI_DCD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800602 port->status &= ~ISI_DCD;
603 }
604
Alan Coxf1d03222008-07-16 21:55:45 +0100605 if (port->port.flags & ASYNC_CTS_FLOW) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100606 if (tty->hw_stopped) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800607 if (header & ISI_CTS) {
Alan Coxf1d03222008-07-16 21:55:45 +0100608 port->port.tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800609 /* start tx ing */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800610 port->status |= (ISI_TXOK
611 | ISI_CTS);
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800612 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800613 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800614 } else if (!(header & ISI_CTS)) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100615 tty->hw_stopped = 1;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800616 /* stop tx ing */
617 port->status &= ~(ISI_TXOK | ISI_CTS);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800618 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800619 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800620 if (header & ISI_CTS)
621 port->status |= ISI_CTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800623 port->status &= ~ISI_CTS;
624 }
625
626 if (header & ISI_DSR)
627 port->status |= ISI_DSR;
628 else
629 port->status &= ~ISI_DSR;
630
631 if (header & ISI_RI)
632 port->status |= ISI_RI;
633 else
634 port->status &= ~ISI_RI;
635
636 break;
637
Jiri Slabya547dfe2006-01-09 20:54:26 -0800638 case 1: /* Received Break !!! */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800639 tty_insert_flip_char(tty, 0, TTY_BREAK);
Alan Coxf1d03222008-07-16 21:55:45 +0100640 if (port->port.flags & ASYNC_SAK)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800641 do_SAK(tty);
642 tty_flip_buffer_push(tty);
643 break;
644
645 case 2: /* Statistics */
Joe Perchesdb913402009-12-09 12:34:16 -0800646 pr_debug("%s: stats!!!\n", __func__);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800647 break;
648
649 default:
Joe Perchesdb913402009-12-09 12:34:16 -0800650 pr_debug("%s: Unknown code in status packet.\n",
651 __func__);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800652 break;
653 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800654 } else { /* Data Packet */
Alan Cox33f0f882006-01-09 20:54:13 -0800655
656 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
Joe Perchesdb913402009-12-09 12:34:16 -0800657 pr_debug("%s: Can rx %d of %d bytes.\n",
658 __func__, count, byte_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700659 word_count = count >> 1;
Alan Cox33f0f882006-01-09 20:54:13 -0800660 insw(base, rp, word_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700661 byte_count -= (word_count << 1);
662 if (count & 0x0001) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800663 tty_insert_flip_char(tty, inw(base) & 0xff,
664 TTY_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 byte_count -= 2;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800666 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700667 if (byte_count > 0) {
Joe Perchesdb913402009-12-09 12:34:16 -0800668 pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
669 __func__, base, channel + 1);
Alan Cox251b8dd2008-04-30 00:54:12 -0700670 /* drain out unread xtra data */
671 while (byte_count > 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672 inw(base);
673 byte_count -= 2;
674 }
675 }
Alan Cox33f0f882006-01-09 20:54:13 -0800676 tty_flip_buffer_push(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 }
Jiri Slaby18234f82006-12-08 02:38:51 -0800678 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800679 spin_unlock(&card->card_lock);
Alan Coxd450b5a2008-10-13 10:39:58 +0100680 tty_kref_put(tty);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800681
Linus Torvalds1da177e2005-04-16 15:20:36 -0700682 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800683}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684
Alan Coxd450b5a2008-10-13 10:39:58 +0100685static void isicom_config_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686{
Alan Coxd450b5a2008-10-13 10:39:58 +0100687 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800688 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700689 unsigned long baud;
Jiri Slaby8070e352006-01-09 20:54:22 -0800690 unsigned long base = card->base;
691 u16 channel_setup, channel = port->channel,
692 shift_count = card->shift_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700693 unsigned char flow_ctrl;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800694
Alan Cox251b8dd2008-04-30 00:54:12 -0700695 /* FIXME: Switch to new tty baud API */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 baud = C_BAUD(tty);
697 if (baud & CBAUDEX) {
698 baud &= ~CBAUDEX;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800699
Linus Torvalds1da177e2005-04-16 15:20:36 -0700700 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
701 * then the card is programmed for 57.6Kbps or 115Kbps
702 * respectively.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800703 */
704
Jiri Slaby7edc1362007-02-10 01:44:54 -0800705 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
706 if (baud < 1 || baud > 4)
Alan Coxd450b5a2008-10-13 10:39:58 +0100707 tty->termios->c_cflag &= ~CBAUDEX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700708 else
709 baud += 15;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800710 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700711 if (baud == 15) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800712
713 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 * by the set_serial_info ioctl ... this is done by
715 * the 'setserial' utility.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800716 */
717
Alan Coxf1d03222008-07-16 21:55:45 +0100718 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800719 baud++; /* 57.6 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100720 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
Alan Cox251b8dd2008-04-30 00:54:12 -0700721 baud += 2; /* 115 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100722 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800723 baud += 3; /* 230 kbps*/
Alan Coxf1d03222008-07-16 21:55:45 +0100724 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800725 baud += 4; /* 460 kbps*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700726 }
727 if (linuxb_to_isib[baud] == -1) {
728 /* hang up */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800729 drop_dtr(port);
730 return;
Alan Cox251b8dd2008-04-30 00:54:12 -0700731 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700732 raise_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800733
Jiri Slabycfe7c092006-12-29 16:48:00 -0800734 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700735 outw(0x8000 | (channel << shift_count) | 0x03, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
737 channel_setup = 0;
Alan Cox251b8dd2008-04-30 00:54:12 -0700738 switch (C_CSIZE(tty)) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800739 case CS5:
740 channel_setup |= ISICOM_CS5;
741 break;
742 case CS6:
743 channel_setup |= ISICOM_CS6;
744 break;
745 case CS7:
746 channel_setup |= ISICOM_CS7;
747 break;
748 case CS8:
749 channel_setup |= ISICOM_CS8;
750 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800752
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 if (C_CSTOPB(tty))
754 channel_setup |= ISICOM_2SB;
755 if (C_PARENB(tty)) {
756 channel_setup |= ISICOM_EVPAR;
757 if (C_PARODD(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800758 channel_setup |= ISICOM_ODPAR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800760 outw(channel_setup, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 InterruptTheCard(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800762 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 if (C_CLOCAL(tty))
Alan Coxf1d03222008-07-16 21:55:45 +0100764 port->port.flags &= ~ASYNC_CHECK_CD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765 else
Alan Coxf1d03222008-07-16 21:55:45 +0100766 port->port.flags |= ASYNC_CHECK_CD;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800767
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 /* flow control settings ...*/
769 flow_ctrl = 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100770 port->port.flags &= ~ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700771 if (C_CRTSCTS(tty)) {
Alan Coxf1d03222008-07-16 21:55:45 +0100772 port->port.flags |= ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 flow_ctrl |= ISICOM_CTSRTS;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800774 }
775 if (I_IXON(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
777 if (I_IXOFF(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800778 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
779
Jiri Slabycfe7c092006-12-29 16:48:00 -0800780 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700781 outw(0x8000 | (channel << shift_count) | 0x04, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 outw(flow_ctrl << 8 | 0x05, base);
783 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
784 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800786
Linus Torvalds1da177e2005-04-16 15:20:36 -0700787 /* rx enabled -> enable port for rx on the card */
788 if (C_CREAD(tty)) {
789 card->port_status |= (1 << channel);
790 outw(card->port_status, base + 0x02);
791 }
792}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700793
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800794/* open et all */
795
796static inline void isicom_setup_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700797{
798 int channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800799 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800800
Alan Coxbaaa08a2009-11-30 13:17:24 +0000801 bp->count++;
Alan Cox6ed847d2009-11-30 13:17:30 +0000802 if (!(bp->status & BOARD_INIT)) {
803 port = bp->ports;
804 for (channel = 0; channel < bp->port_count; channel++, port++)
805 drop_dtr_rts(port);
806 }
807 bp->status |= BOARD_ACTIVE | BOARD_INIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800809
Alan Cox6ed847d2009-11-30 13:17:30 +0000810/* Activate and thus setup board are protected from races against shutdown
811 by the tty_port mutex */
812
Alan Coxbaaa08a2009-11-30 13:17:24 +0000813static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814{
Alan Coxbaaa08a2009-11-30 13:17:24 +0000815 struct isi_port *port = container_of(tport, struct isi_port, port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800816 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700817 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800818
Alan Coxbaaa08a2009-11-30 13:17:24 +0000819 if (tty_port_alloc_xmit_buf(tport) < 0)
Alan Coxf1d03222008-07-16 21:55:45 +0100820 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700821
822 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxbaaa08a2009-11-30 13:17:24 +0000823 isicom_setup_board(card);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800824
Linus Torvalds1da177e2005-04-16 15:20:36 -0700825 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800826
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 /* discard any residual data */
Jiri Slabycfe7c092006-12-29 16:48:00 -0800828 if (WaitTillCardIsFree(card->base) == 0) {
829 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
830 card->base);
831 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
832 InterruptTheCard(card->base);
833 }
Alan Coxd450b5a2008-10-13 10:39:58 +0100834 isicom_config_port(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800836
837 return 0;
838}
839
Alan Cox31f35932009-01-02 13:45:05 +0000840static int isicom_carrier_raised(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700841{
Alan Cox31f35932009-01-02 13:45:05 +0000842 struct isi_port *ip = container_of(port, struct isi_port, port);
843 return (ip->status & ISI_DCD)?1 : 0;
844}
845
Alan Cox11d85d72009-09-19 13:13:27 -0700846static struct tty_port *isicom_find_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800848 struct isi_port *port;
849 struct isi_board *card;
Jiri Slaby17c4edf2006-12-08 02:38:57 -0800850 unsigned int board;
Alan Cox11d85d72009-09-19 13:13:27 -0700851 int line = tty->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852
Linus Torvalds1da177e2005-04-16 15:20:36 -0700853 if (line < 0 || line > PORT_COUNT-1)
Alan Cox11d85d72009-09-19 13:13:27 -0700854 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700855 board = BOARD(line);
856 card = &isi_card[board];
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800857
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858 if (!(card->status & FIRMWARE_LOADED))
Alan Cox11d85d72009-09-19 13:13:27 -0700859 return NULL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800860
Linus Torvalds1da177e2005-04-16 15:20:36 -0700861 /* open on a port greater than the port count for the card !!! */
862 if (line > ((board * 16) + card->port_count - 1))
Alan Cox11d85d72009-09-19 13:13:27 -0700863 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700864
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800865 port = &isi_ports[line];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700866 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
Alan Cox11d85d72009-09-19 13:13:27 -0700867 return NULL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800868
Alan Cox11d85d72009-09-19 13:13:27 -0700869 return &port->port;
870}
Alan Coxbaaa08a2009-11-30 13:17:24 +0000871
Alan Cox11d85d72009-09-19 13:13:27 -0700872static int isicom_open(struct tty_struct *tty, struct file *filp)
873{
874 struct isi_port *port;
875 struct isi_board *card;
876 struct tty_port *tport;
Alan Cox11d85d72009-09-19 13:13:27 -0700877
878 tport = isicom_find_port(tty);
879 if (tport == NULL)
880 return -ENODEV;
881 port = container_of(tport, struct isi_port, port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800882
Alan Coxa2d1e352010-04-23 16:01:18 +0100883 tty->driver_data = port;
Alan Coxbaaa08a2009-11-30 13:17:24 +0000884 return tty_port_open(tport, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700885}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800886
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887/* close et all */
888
Jiri Slabycfe7c092006-12-29 16:48:00 -0800889/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800890static void isicom_shutdown_port(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700891{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800892 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893
Linus Torvalds1da177e2005-04-16 15:20:36 -0700894 if (--card->count < 0) {
Joe Perchesdb913402009-12-09 12:34:16 -0800895 pr_debug("%s: bad board(0x%lx) count %d.\n",
896 __func__, card->base, card->count);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800897 card->count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700898 }
Alan Coxbaaa08a2009-11-30 13:17:24 +0000899 /* last port was closed, shutdown that board too */
Alan Cox6ed847d2009-11-30 13:17:30 +0000900 if (!card->count)
901 card->status &= BOARD_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700902}
903
Alan Cox978e5952008-04-30 00:53:59 -0700904static void isicom_flush_buffer(struct tty_struct *tty)
905{
906 struct isi_port *port = tty->driver_data;
907 struct isi_board *card = port->card;
908 unsigned long flags;
909
910 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
911 return;
912
913 spin_lock_irqsave(&card->card_lock, flags);
914 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
915 spin_unlock_irqrestore(&card->card_lock, flags);
916
917 tty_wakeup(tty);
918}
919
Alan Coxbaaa08a2009-11-30 13:17:24 +0000920static void isicom_shutdown(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921{
Alan Cox6f6412b2009-09-19 13:13:21 -0700922 struct isi_port *ip = container_of(port, struct isi_port, port);
923 struct isi_board *card = ip->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800925
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800926 /* indicate to the card that no more data can be received
Linus Torvalds1da177e2005-04-16 15:20:36 -0700927 on this port */
928 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxbaaa08a2009-11-30 13:17:24 +0000929 card->port_status &= ~(1 << ip->channel);
930 outw(card->port_status, card->base + 0x02);
Alan Coxa6614992009-01-02 13:46:50 +0000931 isicom_shutdown_port(ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700932 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Cox2493c0c2009-11-30 13:17:46 +0000933 tty_port_free_xmit_buf(port);
Alan Cox6f6412b2009-09-19 13:13:21 -0700934}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800935
Alan Cox6f6412b2009-09-19 13:13:21 -0700936static void isicom_close(struct tty_struct *tty, struct file *filp)
937{
938 struct isi_port *ip = tty->driver_data;
Alan Coxa2d1e352010-04-23 16:01:18 +0100939 struct tty_port *port;
940
941 if (ip == NULL)
942 return;
943
944 port = &ip->port;
Alan Cox6f6412b2009-09-19 13:13:21 -0700945 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
946 return;
Alan Coxbaaa08a2009-11-30 13:17:24 +0000947 tty_port_close(port, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700948}
949
950/* write et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800951static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
952 int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953{
Jiri Slaby8070e352006-01-09 20:54:22 -0800954 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800955 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 unsigned long flags;
957 int cnt, total = 0;
958
959 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
960 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800961
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 spin_lock_irqsave(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800963
Alan Cox251b8dd2008-04-30 00:54:12 -0700964 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800965 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
966 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800967 if (cnt <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800969
Alan Coxf1d03222008-07-16 21:55:45 +0100970 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800971 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
972 - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700973 port->xmit_cnt += cnt;
974 buf += cnt;
975 count -= cnt;
976 total += cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800977 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700978 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
979 port->status |= ISI_TXOK;
980 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800981 return total;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700982}
983
984/* put_char et all */
Alan Coxf34d7a52008-04-30 00:54:13 -0700985static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986{
Jiri Slaby8070e352006-01-09 20:54:22 -0800987 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800988 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700989 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800990
Linus Torvalds1da177e2005-04-16 15:20:36 -0700991 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
Alan Coxf34d7a52008-04-30 00:54:13 -0700992 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800993
Linus Torvalds1da177e2005-04-16 15:20:36 -0700994 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -0700995 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
996 spin_unlock_irqrestore(&card->card_lock, flags);
997 return 0;
998 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800999
Alan Coxf1d03222008-07-16 21:55:45 +01001000 port->port.xmit_buf[port->xmit_head++] = ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001001 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1002 port->xmit_cnt++;
1003 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -07001004 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005}
1006
1007/* flush_chars et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001008static void isicom_flush_chars(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009{
Jiri Slaby8070e352006-01-09 20:54:22 -08001010 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001011
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1013 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001014
Jiri Slabya547dfe2006-01-09 20:54:26 -08001015 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
Alan Coxf1d03222008-07-16 21:55:45 +01001016 !port->port.xmit_buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001017 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001018
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019 /* this tells the transmitter to consider this port for
1020 data output to the card ... that's the best we can do. */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001021 port->status |= ISI_TXOK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022}
1023
1024/* write_room et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001025static int isicom_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001026{
Jiri Slaby8070e352006-01-09 20:54:22 -08001027 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028 int free;
1029
1030 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1031 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001032
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1034 if (free < 0)
1035 free = 0;
1036 return free;
1037}
1038
1039/* chars_in_buffer et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001040static int isicom_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041{
Jiri Slaby8070e352006-01-09 20:54:22 -08001042 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1044 return 0;
1045 return port->xmit_cnt;
1046}
1047
1048/* ioctl et all */
Alan Cox6d889722008-07-22 11:18:21 +01001049static int isicom_send_break(struct tty_struct *tty, int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050{
Alan Cox6d889722008-07-22 11:18:21 +01001051 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001052 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -08001053 unsigned long base = card->base;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001054
Alan Cox6d889722008-07-22 11:18:21 +01001055 if (length == -1)
1056 return -EOPNOTSUPP;
1057
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001058 if (!lock_card(card))
Alan Cox6d889722008-07-22 11:18:21 +01001059 return -EINVAL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001060
Linus Torvalds1da177e2005-04-16 15:20:36 -07001061 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1062 outw((length & 0xff) << 8 | 0x00, base);
1063 outw((length & 0xff00), base);
1064 InterruptTheCard(base);
1065
1066 unlock_card(card);
Alan Cox6d889722008-07-22 11:18:21 +01001067 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001068}
1069
1070static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1071{
Jiri Slaby8070e352006-01-09 20:54:22 -08001072 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 /* just send the port status */
Jiri Slaby8070e352006-01-09 20:54:22 -08001074 u16 status = port->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075
1076 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1077 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001078
Linus Torvalds1da177e2005-04-16 15:20:36 -07001079 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1080 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1081 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1082 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1083 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1084 ((status & ISI_RI ) ? TIOCM_RI : 0);
1085}
1086
1087static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001088 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001089{
Jiri Slaby8070e352006-01-09 20:54:22 -08001090 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c092006-12-29 16:48:00 -08001091 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001092
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1094 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001095
Jiri Slabycfe7c092006-12-29 16:48:00 -08001096 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 if (set & TIOCM_RTS)
1098 raise_rts(port);
1099 if (set & TIOCM_DTR)
1100 raise_dtr(port);
1101
1102 if (clear & TIOCM_RTS)
1103 drop_rts(port);
1104 if (clear & TIOCM_DTR)
1105 drop_dtr(port);
Jiri Slabycfe7c092006-12-29 16:48:00 -08001106 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107
1108 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001109}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110
Alan Coxd450b5a2008-10-13 10:39:58 +01001111static int isicom_set_serial_info(struct tty_struct *tty,
1112 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113{
Alan Coxd450b5a2008-10-13 10:39:58 +01001114 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001115 struct serial_struct newinfo;
1116 int reconfig_port;
1117
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001118 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001119 return -EFAULT;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001120
Alan Cox1eac4942008-04-30 00:53:19 -07001121 lock_kernel();
1122
Alan Coxf1d03222008-07-16 21:55:45 +01001123 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001124 (newinfo.flags & ASYNC_SPD_MASK));
1125
Linus Torvalds1da177e2005-04-16 15:20:36 -07001126 if (!capable(CAP_SYS_ADMIN)) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001127 if ((newinfo.close_delay != port->port.close_delay) ||
1128 (newinfo.closing_wait != port->port.closing_wait) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001129 ((newinfo.flags & ~ASYNC_USR_MASK) !=
Alan Coxf1d03222008-07-16 21:55:45 +01001130 (port->port.flags & ~ASYNC_USR_MASK))) {
Alan Cox1eac4942008-04-30 00:53:19 -07001131 unlock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001132 return -EPERM;
Alan Cox1eac4942008-04-30 00:53:19 -07001133 }
Alan Coxf1d03222008-07-16 21:55:45 +01001134 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001135 (newinfo.flags & ASYNC_USR_MASK));
Alan Cox251b8dd2008-04-30 00:54:12 -07001136 } else {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001137 port->port.close_delay = newinfo.close_delay;
1138 port->port.closing_wait = newinfo.closing_wait;
Alan Coxf1d03222008-07-16 21:55:45 +01001139 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001140 (newinfo.flags & ASYNC_FLAGS));
1141 }
1142 if (reconfig_port) {
Jiri Slabycfe7c092006-12-29 16:48:00 -08001143 unsigned long flags;
1144 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001145 isicom_config_port(tty);
Jiri Slabycfe7c092006-12-29 16:48:00 -08001146 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001147 }
Alan Cox1eac4942008-04-30 00:53:19 -07001148 unlock_kernel();
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001149 return 0;
1150}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001151
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001152static int isicom_get_serial_info(struct isi_port *port,
1153 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001154{
1155 struct serial_struct out_info;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001156
Alan Cox1eac4942008-04-30 00:53:19 -07001157 lock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 memset(&out_info, 0, sizeof(out_info));
1159/* out_info.type = ? */
1160 out_info.line = port - isi_ports;
1161 out_info.port = port->card->base;
1162 out_info.irq = port->card->irq;
Alan Coxf1d03222008-07-16 21:55:45 +01001163 out_info.flags = port->port.flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164/* out_info.baud_base = ? */
Alan Cox44b7d1b2008-07-16 21:57:18 +01001165 out_info.close_delay = port->port.close_delay;
1166 out_info.closing_wait = port->port.closing_wait;
Alan Cox1eac4942008-04-30 00:53:19 -07001167 unlock_kernel();
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001168 if (copy_to_user(info, &out_info, sizeof(out_info)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001169 return -EFAULT;
1170 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001171}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001172
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001173static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
1174 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175{
Jiri Slaby8070e352006-01-09 20:54:22 -08001176 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001177 void __user *argp = (void __user *)arg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178
1179 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1180 return -ENODEV;
1181
Alan Cox251b8dd2008-04-30 00:54:12 -07001182 switch (cmd) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001183 case TIOCGSERIAL:
1184 return isicom_get_serial_info(port, argp);
1185
1186 case TIOCSSERIAL:
Alan Coxd450b5a2008-10-13 10:39:58 +01001187 return isicom_set_serial_info(tty, argp);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001188
1189 default:
1190 return -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001191 }
1192 return 0;
1193}
1194
1195/* set_termios et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001196static void isicom_set_termios(struct tty_struct *tty,
Alan Cox606d0992006-12-08 02:38:45 -08001197 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001198{
Jiri Slaby8070e352006-01-09 20:54:22 -08001199 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c092006-12-29 16:48:00 -08001200 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001201
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1203 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001204
Linus Torvalds1da177e2005-04-16 15:20:36 -07001205 if (tty->termios->c_cflag == old_termios->c_cflag &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001206 tty->termios->c_iflag == old_termios->c_iflag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001208
Jiri Slabycfe7c092006-12-29 16:48:00 -08001209 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001210 isicom_config_port(tty);
Jiri Slabycfe7c092006-12-29 16:48:00 -08001211 spin_unlock_irqrestore(&port->card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001212
Linus Torvalds1da177e2005-04-16 15:20:36 -07001213 if ((old_termios->c_cflag & CRTSCTS) &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001214 !(tty->termios->c_cflag & CRTSCTS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215 tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001216 isicom_start(tty);
1217 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001218}
1219
1220/* throttle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001221static void isicom_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222{
Jiri Slaby8070e352006-01-09 20:54:22 -08001223 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001224 struct isi_board *card = port->card;
1225
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1227 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001228
Linus Torvalds1da177e2005-04-16 15:20:36 -07001229 /* tell the card that this port cannot handle any more data for now */
1230 card->port_status &= ~(1 << port->channel);
1231 outw(card->port_status, card->base + 0x02);
1232}
1233
1234/* unthrottle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001235static void isicom_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001236{
Jiri Slaby8070e352006-01-09 20:54:22 -08001237 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001238 struct isi_board *card = port->card;
1239
Linus Torvalds1da177e2005-04-16 15:20:36 -07001240 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1241 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001242
Linus Torvalds1da177e2005-04-16 15:20:36 -07001243 /* tell the card that this port is ready to accept more data */
1244 card->port_status |= (1 << port->channel);
1245 outw(card->port_status, card->base + 0x02);
1246}
1247
1248/* stop et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001249static void isicom_stop(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250{
Jiri Slaby8070e352006-01-09 20:54:22 -08001251 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001252
1253 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1254 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001255
Linus Torvalds1da177e2005-04-16 15:20:36 -07001256 /* this tells the transmitter not to consider this port for
1257 data output to the card. */
1258 port->status &= ~ISI_TXOK;
1259}
1260
1261/* start et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001262static void isicom_start(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263{
Jiri Slaby8070e352006-01-09 20:54:22 -08001264 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001265
Linus Torvalds1da177e2005-04-16 15:20:36 -07001266 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1267 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001268
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269 /* this tells the transmitter to consider this port for
1270 data output to the card. */
1271 port->status |= ISI_TXOK;
1272}
1273
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001274static void isicom_hangup(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275{
Jiri Slaby8070e352006-01-09 20:54:22 -08001276 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001277
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1279 return;
Alan Cox3e616962009-01-02 13:45:26 +00001280 tty_port_hangup(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281}
1282
Linus Torvalds1da177e2005-04-16 15:20:36 -07001283
Jiri Slaby9ac09482006-01-09 20:54:24 -08001284/*
1285 * Driver init and deinit functions
1286 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287
Jeff Dikeb68e31d2006-10-02 02:17:18 -07001288static const struct tty_operations isicom_ops = {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001289 .open = isicom_open,
1290 .close = isicom_close,
1291 .write = isicom_write,
1292 .put_char = isicom_put_char,
1293 .flush_chars = isicom_flush_chars,
1294 .write_room = isicom_write_room,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001295 .chars_in_buffer = isicom_chars_in_buffer,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001296 .ioctl = isicom_ioctl,
1297 .set_termios = isicom_set_termios,
1298 .throttle = isicom_throttle,
1299 .unthrottle = isicom_unthrottle,
1300 .stop = isicom_stop,
1301 .start = isicom_start,
1302 .hangup = isicom_hangup,
1303 .flush_buffer = isicom_flush_buffer,
1304 .tiocmget = isicom_tiocmget,
1305 .tiocmset = isicom_tiocmset,
Alan Cox6d889722008-07-22 11:18:21 +01001306 .break_ctl = isicom_send_break,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307};
1308
Alan Cox31f35932009-01-02 13:45:05 +00001309static const struct tty_port_operations isicom_port_ops = {
1310 .carrier_raised = isicom_carrier_raised,
Alan Coxfcc8ac12009-06-11 12:24:17 +01001311 .dtr_rts = isicom_dtr_rts,
Alan Coxbaaa08a2009-11-30 13:17:24 +00001312 .activate = isicom_activate,
1313 .shutdown = isicom_shutdown,
Alan Cox31f35932009-01-02 13:45:05 +00001314};
1315
Jiri Slaby9ac09482006-01-09 20:54:24 -08001316static int __devinit reset_card(struct pci_dev *pdev,
1317 const unsigned int card, unsigned int *signature)
1318{
1319 struct isi_board *board = pci_get_drvdata(pdev);
1320 unsigned long base = board->base;
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001321 unsigned int sig, portcount = 0;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001322 int retval = 0;
1323
1324 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1325 base);
1326
1327 inw(base + 0x8);
1328
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001329 msleep(10);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001330
1331 outw(0, base + 0x8); /* Reset */
1332
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001333 msleep(1000);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001334
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001335 sig = inw(base + 0x4) & 0xff;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001336
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001337 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1338 sig != 0xee) {
1339 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1340 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1341 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
Jiri Slaby18234f82006-12-08 02:38:51 -08001342 retval = -EIO;
1343 goto end;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001344 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001345
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001346 msleep(10);
1347
1348 portcount = inw(base + 0x2);
Julia Lawall07fb6f22008-03-04 14:29:17 -08001349 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001350 portcount != 8 && portcount != 16)) {
Joe Perches898eb712007-10-18 03:06:30 -07001351 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001352 card + 1);
1353 retval = -EIO;
1354 goto end;
1355 }
1356
1357 switch (sig) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001358 case 0xa5:
1359 case 0xbb:
1360 case 0xdd:
Jiri Slaby18234f82006-12-08 02:38:51 -08001361 board->port_count = (portcount == 4) ? 4 : 8;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001362 board->shift_count = 12;
1363 break;
1364 case 0xcc:
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001365 case 0xee:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001366 board->port_count = 16;
1367 board->shift_count = 11;
1368 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001370 dev_info(&pdev->dev, "-Done\n");
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001371 *signature = sig;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001372
1373end:
1374 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001375}
1376
Jiri Slabye65c1db2006-01-09 20:54:25 -08001377static int __devinit load_firmware(struct pci_dev *pdev,
1378 const unsigned int index, const unsigned int signature)
1379{
1380 struct isi_board *board = pci_get_drvdata(pdev);
1381 const struct firmware *fw;
1382 unsigned long base = board->base;
1383 unsigned int a;
1384 u16 word_count, status;
1385 int retval = -EIO;
1386 char *name;
1387 u8 *data;
1388
1389 struct stframe {
1390 u16 addr;
1391 u16 count;
1392 u8 data[0];
1393 } *frame;
1394
1395 switch (signature) {
1396 case 0xa5:
1397 name = "isi608.bin";
1398 break;
1399 case 0xbb:
1400 name = "isi608em.bin";
1401 break;
1402 case 0xcc:
1403 name = "isi616em.bin";
1404 break;
1405 case 0xdd:
1406 name = "isi4608.bin";
1407 break;
1408 case 0xee:
1409 name = "isi4616.bin";
1410 break;
1411 default:
1412 dev_err(&pdev->dev, "Unknown signature.\n");
1413 goto end;
Alan Cox251b8dd2008-04-30 00:54:12 -07001414 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001415
1416 retval = request_firmware(&fw, name, &pdev->dev);
1417 if (retval)
1418 goto end;
1419
Jiri Slabye4e04082006-09-30 23:27:50 -07001420 retval = -EIO;
1421
Jiri Slabye65c1db2006-01-09 20:54:25 -08001422 for (frame = (struct stframe *)fw->data;
1423 frame < (struct stframe *)(fw->data + fw->size);
Jiri Slabye4e04082006-09-30 23:27:50 -07001424 frame = (struct stframe *)((u8 *)(frame + 1) +
1425 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001426 if (WaitTillCardIsFree(base))
1427 goto errrelfw;
1428
1429 outw(0xf0, base); /* start upload sequence */
1430 outw(0x00, base);
1431 outw(frame->addr, base); /* lsb of address */
1432
1433 word_count = frame->count / 2 + frame->count % 2;
1434 outw(word_count, base);
1435 InterruptTheCard(base);
1436
1437 udelay(100); /* 0x2f */
1438
1439 if (WaitTillCardIsFree(base))
1440 goto errrelfw;
1441
Alan Cox251b8dd2008-04-30 00:54:12 -07001442 status = inw(base + 0x4);
1443 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001444 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
Joe Perchesad361c92009-07-06 13:05:40 -07001445 "Address:0x%x\n"
1446 "Count:0x%x\n"
1447 "Status:0x%x\n",
1448 index + 1, frame->addr, frame->count, status);
Jiri Slabye65c1db2006-01-09 20:54:25 -08001449 goto errrelfw;
1450 }
1451 outsw(base, frame->data, word_count);
1452
1453 InterruptTheCard(base);
1454
1455 udelay(50); /* 0x0f */
1456
1457 if (WaitTillCardIsFree(base))
1458 goto errrelfw;
1459
Alan Cox251b8dd2008-04-30 00:54:12 -07001460 status = inw(base + 0x4);
1461 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001462 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1463 "Status:0x%x\n", index + 1, status);
1464 goto errrelfw;
1465 }
Alan Cox251b8dd2008-04-30 00:54:12 -07001466 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001467
Jiri Slabye65c1db2006-01-09 20:54:25 -08001468/* XXX: should we test it by reading it back and comparing with original like
1469 * in load firmware package? */
Jiri Slabye4e04082006-09-30 23:27:50 -07001470 for (frame = (struct stframe *)fw->data;
1471 frame < (struct stframe *)(fw->data + fw->size);
1472 frame = (struct stframe *)((u8 *)(frame + 1) +
1473 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001474 if (WaitTillCardIsFree(base))
1475 goto errrelfw;
1476
1477 outw(0xf1, base); /* start download sequence */
1478 outw(0x00, base);
1479 outw(frame->addr, base); /* lsb of address */
1480
1481 word_count = (frame->count >> 1) + frame->count % 2;
1482 outw(word_count + 1, base);
1483 InterruptTheCard(base);
1484
1485 udelay(50); /* 0xf */
1486
1487 if (WaitTillCardIsFree(base))
1488 goto errrelfw;
1489
Alan Cox251b8dd2008-04-30 00:54:12 -07001490 status = inw(base + 0x4);
1491 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001492 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
Joe Perchesad361c92009-07-06 13:05:40 -07001493 "Address:0x%x\n"
1494 "Count:0x%x\n"
1495 "Status: 0x%x\n",
1496 index + 1, frame->addr, frame->count, status);
Jiri Slabye65c1db2006-01-09 20:54:25 -08001497 goto errrelfw;
1498 }
1499
1500 data = kmalloc(word_count * 2, GFP_KERNEL);
Jiri Slabyf0671372006-12-08 02:38:54 -08001501 if (data == NULL) {
1502 dev_err(&pdev->dev, "Card%d, firmware upload "
1503 "failed, not enough memory\n", index + 1);
1504 goto errrelfw;
1505 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001506 inw(base);
1507 insw(base, data, word_count);
1508 InterruptTheCard(base);
1509
1510 for (a = 0; a < frame->count; a++)
1511 if (data[a] != frame->data[a]) {
1512 kfree(data);
1513 dev_err(&pdev->dev, "Card%d, firmware upload "
1514 "failed\n", index + 1);
1515 goto errrelfw;
1516 }
1517 kfree(data);
1518
1519 udelay(50); /* 0xf */
1520
1521 if (WaitTillCardIsFree(base))
1522 goto errrelfw;
1523
Alan Cox251b8dd2008-04-30 00:54:12 -07001524 status = inw(base + 0x4);
1525 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001526 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1527 "Card Status:0x%x\n", index + 1, status);
1528 goto errrelfw;
1529 }
1530 }
1531
Jiri Slabye4e04082006-09-30 23:27:50 -07001532 /* xfer ctrl */
1533 if (WaitTillCardIsFree(base))
1534 goto errrelfw;
1535
1536 outw(0xf2, base);
1537 outw(0x800, base);
1538 outw(0x0, base);
1539 outw(0x0, base);
1540 InterruptTheCard(base);
1541 outw(0x0, base + 0x4); /* for ISI4608 cards */
1542
Jiri Slabye65c1db2006-01-09 20:54:25 -08001543 board->status |= FIRMWARE_LOADED;
1544 retval = 0;
1545
1546errrelfw:
1547 release_firmware(fw);
1548end:
1549 return retval;
1550}
1551
Jiri Slaby9ac09482006-01-09 20:54:24 -08001552/*
1553 * Insmod can set static symbols so keep these static
1554 */
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001555static unsigned int card_count;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001556
1557static int __devinit isicom_probe(struct pci_dev *pdev,
1558 const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001559{
Jiri Slaby9653a692009-06-17 16:27:48 -07001560 unsigned int uninitialized_var(signature), index;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001561 int retval = -EPERM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001562 struct isi_board *board = NULL;
1563
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001564 if (card_count >= BOARD_COUNT)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001565 goto err;
1566
Jiri Slabye1e57702008-07-16 21:52:56 +01001567 retval = pci_enable_device(pdev);
1568 if (retval) {
1569 dev_err(&pdev->dev, "failed to enable\n");
1570 goto err;
1571 }
1572
Jiri Slaby9ac09482006-01-09 20:54:24 -08001573 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1574
1575 /* allot the first empty slot in the array */
1576 for (index = 0; index < BOARD_COUNT; index++)
1577 if (isi_card[index].base == 0) {
1578 board = &isi_card[index];
1579 break;
1580 }
1581
Jiri Slaby938a7022006-12-08 02:38:52 -08001582 board->index = index;
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001583 board->base = pci_resource_start(pdev, 3);
1584 board->irq = pdev->irq;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001585 card_count++;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001586
1587 pci_set_drvdata(pdev, board);
1588
Jiri Slaby78028da2006-12-08 02:38:53 -08001589 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1590 if (retval) {
Jiri Slaby09a4a112006-12-08 02:38:49 -08001591 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1592 "will be disabled.\n", board->base, board->base + 15,
1593 index + 1);
1594 retval = -EBUSY;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001595 goto errdec;
Alan Cox251b8dd2008-04-30 00:54:12 -07001596 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001597
Jiri Slaby09a4a112006-12-08 02:38:49 -08001598 retval = request_irq(board->irq, isicom_interrupt,
1599 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
1600 if (retval < 0) {
1601 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1602 "Card%d will be disabled.\n", board->irq, index + 1);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001603 goto errunrr;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001604 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001605
1606 retval = reset_card(pdev, index, &signature);
1607 if (retval < 0)
1608 goto errunri;
1609
Jiri Slabye65c1db2006-01-09 20:54:25 -08001610 retval = load_firmware(pdev, index, signature);
1611 if (retval < 0)
1612 goto errunri;
1613
Jiri Slaby938a7022006-12-08 02:38:52 -08001614 for (index = 0; index < board->port_count; index++)
1615 tty_register_device(isicom_normal, board->index * 16 + index,
1616 &pdev->dev);
1617
Jiri Slaby9ac09482006-01-09 20:54:24 -08001618 return 0;
1619
1620errunri:
1621 free_irq(board->irq, board);
1622errunrr:
Jiri Slaby78028da2006-12-08 02:38:53 -08001623 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001624errdec:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001625 board->base = 0;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001626 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001627 pci_disable_device(pdev);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001628err:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001629 return retval;
1630}
1631
1632static void __devexit isicom_remove(struct pci_dev *pdev)
1633{
1634 struct isi_board *board = pci_get_drvdata(pdev);
Jiri Slaby938a7022006-12-08 02:38:52 -08001635 unsigned int i;
1636
1637 for (i = 0; i < board->port_count; i++)
1638 tty_unregister_device(isicom_normal, board->index * 16 + i);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001639
1640 free_irq(board->irq, board);
Jiri Slaby78028da2006-12-08 02:38:53 -08001641 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001642 board->base = 0;
1643 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001644 pci_disable_device(pdev);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001645}
1646
Jiri Slabyca262002006-12-08 02:38:50 -08001647static int __init isicom_init(void)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001648{
1649 int retval, idx, channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001650 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001651
Alan Cox251b8dd2008-04-30 00:54:12 -07001652 for (idx = 0; idx < BOARD_COUNT; idx++) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001653 port = &isi_ports[idx * 16];
1654 isi_card[idx].ports = port;
1655 spin_lock_init(&isi_card[idx].card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001656 for (channel = 0; channel < 16; channel++, port++) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001657 tty_port_init(&port->port);
Alan Cox31f35932009-01-02 13:45:05 +00001658 port->port.ops = &isicom_port_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659 port->magic = ISICOM_MAGIC;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001660 port->card = &isi_card[idx];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001661 port->channel = channel;
Alan Cox44b7d1b2008-07-16 21:57:18 +01001662 port->port.close_delay = 50 * HZ/100;
1663 port->port.closing_wait = 3000 * HZ/100;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001664 port->status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001665 /* . . . */
Alan Cox251b8dd2008-04-30 00:54:12 -07001666 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001667 isi_card[idx].base = 0;
1668 isi_card[idx].irq = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001669 }
1670
Jiri Slaby09a4a112006-12-08 02:38:49 -08001671 /* tty driver structure initialization */
1672 isicom_normal = alloc_tty_driver(PORT_COUNT);
1673 if (!isicom_normal) {
1674 retval = -ENOMEM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001675 goto error;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001676 }
1677
1678 isicom_normal->owner = THIS_MODULE;
1679 isicom_normal->name = "ttyM";
1680 isicom_normal->major = ISICOM_NMAJOR;
1681 isicom_normal->minor_start = 0;
1682 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1683 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1684 isicom_normal->init_termios = tty_std_termios;
1685 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1686 CLOCAL;
Jiri Slaby938a7022006-12-08 02:38:52 -08001687 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
Alan Cox6d889722008-07-22 11:18:21 +01001688 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001689 tty_set_operations(isicom_normal, &isicom_ops);
1690
1691 retval = tty_register_driver(isicom_normal);
1692 if (retval) {
Joe Perchesdb913402009-12-09 12:34:16 -08001693 pr_debug("Couldn't register the dialin driver\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001694 goto err_puttty;
1695 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001696
Jiri Slaby9ac09482006-01-09 20:54:24 -08001697 retval = pci_register_driver(&isicom_driver);
1698 if (retval < 0) {
Joe Perchesdb913402009-12-09 12:34:16 -08001699 pr_err("Unable to register pci driver.\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001700 goto err_unrtty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001701 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001702
Jiri Slaby34b55b82006-12-08 02:38:55 -08001703 mod_timer(&tx, jiffies + 1);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001704
Linus Torvalds1da177e2005-04-16 15:20:36 -07001705 return 0;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001706err_unrtty:
1707 tty_unregister_driver(isicom_normal);
1708err_puttty:
1709 put_tty_driver(isicom_normal);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001710error:
1711 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001712}
1713
1714static void __exit isicom_exit(void)
1715{
Jiri Slabye3273252007-07-17 04:05:18 -07001716 del_timer_sync(&tx);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001717
Jiri Slaby9ac09482006-01-09 20:54:24 -08001718 pci_unregister_driver(&isicom_driver);
Jiri Slaby09a4a112006-12-08 02:38:49 -08001719 tty_unregister_driver(isicom_normal);
1720 put_tty_driver(isicom_normal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001721}
1722
Jiri Slabyca262002006-12-08 02:38:50 -08001723module_init(isicom_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724module_exit(isicom_exit);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001725
1726MODULE_AUTHOR("MultiTech");
1727MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1728MODULE_LICENSE("GPL");
Ben Hutchingse6c4ef92010-01-13 23:34:18 +00001729MODULE_FIRMWARE("isi608.bin");
1730MODULE_FIRMWARE("isi608em.bin");
1731MODULE_FIRMWARE("isi616em.bin");
1732MODULE_FIRMWARE("isi4608.bin");
1733MODULE_FIRMWARE("isi4616.bin");