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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 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>
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>
133
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#include <asm/system.h>
137
138#include <linux/pci.h>
139
140#include <linux/isicom.h>
141
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800142#define InterruptTheCard(base) outw(0, (base) + 0xc)
143#define ClearInterrupt(base) inw((base) + 0x0a)
144
145#ifdef DEBUG
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800146#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
147#else
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800148#define isicom_paranoia_check(a, b, c) 0
149#endif
150
Jiri Slaby9ac09482006-01-09 20:54:24 -0800151static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
152static void __devexit isicom_remove(struct pci_dev *);
153
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154static struct pci_device_id isicom_pci_tbl[] = {
Jiri Slaby9ac09482006-01-09 20:54:24 -0800155 { PCI_DEVICE(VENDOR_ID, 0x2028) },
156 { PCI_DEVICE(VENDOR_ID, 0x2051) },
157 { PCI_DEVICE(VENDOR_ID, 0x2052) },
158 { PCI_DEVICE(VENDOR_ID, 0x2053) },
159 { PCI_DEVICE(VENDOR_ID, 0x2054) },
160 { PCI_DEVICE(VENDOR_ID, 0x2055) },
161 { PCI_DEVICE(VENDOR_ID, 0x2056) },
162 { PCI_DEVICE(VENDOR_ID, 0x2057) },
163 { PCI_DEVICE(VENDOR_ID, 0x2058) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700164 { 0 }
165};
166MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
167
Jiri Slaby9ac09482006-01-09 20:54:24 -0800168static struct pci_driver isicom_driver = {
169 .name = "isicom",
170 .id_table = isicom_pci_tbl,
171 .probe = isicom_probe,
172 .remove = __devexit_p(isicom_remove)
173};
174
Linus Torvalds1da177e2005-04-16 15:20:36 -0700175static int prev_card = 3; /* start servicing isi_card[0] */
176static struct tty_driver *isicom_normal;
177
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178static void isicom_tx(unsigned long _data);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800179static void isicom_start(struct tty_struct *tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700180
Jiri Slaby34b55b82006-12-08 02:38:55 -0800181static DEFINE_TIMER(tx, isicom_tx, 0, 0);
182
Linus Torvalds1da177e2005-04-16 15:20:36 -0700183/* baud index mappings from linux defns to isi */
184
185static signed char linuxb_to_isib[] = {
Jiri Slaby7edc1362007-02-10 01:44:54 -0800186 -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 -0700187};
188
189struct isi_board {
Jiri Slaby8070e352006-01-09 20:54:22 -0800190 unsigned long base;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700191 int irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192 unsigned char port_count;
193 unsigned short status;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800194 unsigned short port_status; /* each bit for each port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 unsigned short shift_count;
Alan Cox251b8dd2008-04-30 00:54:12 -0700196 struct isi_port *ports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197 signed char count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700198 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
199 unsigned long flags;
Jiri Slaby938a7022006-12-08 02:38:52 -0800200 unsigned int index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201};
202
203struct isi_port {
204 unsigned short magic;
Alan Coxf1d03222008-07-16 21:55:45 +0100205 struct tty_port port;
Jiri Slaby8070e352006-01-09 20:54:22 -0800206 u16 channel;
207 u16 status;
Alan Cox251b8dd2008-04-30 00:54:12 -0700208 struct isi_board *card;
Alan Cox251b8dd2008-04-30 00:54:12 -0700209 unsigned char *xmit_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210 int xmit_head;
211 int xmit_tail;
212 int xmit_cnt;
213};
214
215static struct isi_board isi_card[BOARD_COUNT];
216static struct isi_port isi_ports[PORT_COUNT];
217
218/*
219 * Locking functions for card level locking. We need to own both
220 * the kernel lock for the card and have the card in a position that
221 * it wants to talk.
222 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800223
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700224static inline int WaitTillCardIsFree(unsigned long base)
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800225{
226 unsigned int count = 0;
227 unsigned int a = in_atomic(); /* do we run under spinlock? */
228
229 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
230 if (a)
231 mdelay(1);
232 else
233 msleep(1);
234
235 return !(inw(base + 0xe) & 0x1);
236}
237
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238static int lock_card(struct isi_board *card)
239{
Jiri Slaby8070e352006-01-09 20:54:22 -0800240 unsigned long base = card->base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700241 unsigned int retries, a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700243 for (retries = 0; retries < 10; retries++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 spin_lock_irqsave(&card->card_lock, card->flags);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700245 for (a = 0; a < 10; a++) {
246 if (inw(base + 0xe) & 0x1)
247 return 1;
248 udelay(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700249 }
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700250 spin_unlock_irqrestore(&card->card_lock, card->flags);
251 msleep(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 }
Joe Perchesdb91340b2009-12-09 12:34:16 -0800253 pr_warning("Failed to lock Card (0x%lx)\n", card->base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800254
Adrian Bunk04187262006-06-30 18:23:04 +0200255 return 0; /* Failed to acquire the card! */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256}
257
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258static void unlock_card(struct isi_board *card)
259{
260 spin_unlock_irqrestore(&card->card_lock, card->flags);
261}
262
263/*
264 * ISI Card specific ops ...
265 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800266
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800267/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800268static void raise_dtr(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700269{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800270 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800271 unsigned long base = card->base;
272 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800274 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 return;
276
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800277 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 outw(0x0504, base);
279 InterruptTheCard(base);
280 port->status |= ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281}
282
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800283/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800284static inline void drop_dtr(struct isi_port *port)
285{
286 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800287 unsigned long base = card->base;
288 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800290 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700291 return;
292
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800293 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 outw(0x0404, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800295 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 port->status &= ~ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700297}
298
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800299/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800300static inline void raise_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800302 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800303 unsigned long base = card->base;
304 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800306 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307 return;
308
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800309 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700310 outw(0x0a04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800311 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312 port->status |= ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313}
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800314
315/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800316static inline void drop_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800318 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800319 unsigned long base = card->base;
320 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800322 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323 return;
324
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800325 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700326 outw(0x0804, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800327 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 port->status &= ~ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329}
330
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800331/* card->lock MUST NOT be held */
Alan Cox5d951fb2009-01-02 13:45:19 +0000332
Alan Coxfcc8ac12009-06-11 12:24:17 +0100333static void isicom_dtr_rts(struct tty_port *port, int on)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700334{
Alan Cox5d951fb2009-01-02 13:45:19 +0000335 struct isi_port *ip = container_of(port, struct isi_port, port);
336 struct isi_board *card = ip->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800337 unsigned long base = card->base;
Alan Cox5d951fb2009-01-02 13:45:19 +0000338 u16 channel = ip->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339
340 if (!lock_card(card))
341 return;
342
Alan Coxfcc8ac12009-06-11 12:24:17 +0100343 if (on) {
344 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
345 outw(0x0f04, base);
346 InterruptTheCard(base);
347 ip->status |= (ISI_DTR | ISI_RTS);
348 } else {
349 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
350 outw(0x0C04, base);
351 InterruptTheCard(base);
352 ip->status &= ~(ISI_DTR | ISI_RTS);
353 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700354 unlock_card(card);
355}
356
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800357/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800358static void drop_dtr_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700359{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800360 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800361 unsigned long base = card->base;
362 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800364 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365 return;
366
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800367 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700368 outw(0x0c04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800369 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 port->status &= ~(ISI_RTS | ISI_DTR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371}
372
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373/*
374 * ISICOM Driver specific routines ...
375 *
376 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800377
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800378static inline int __isicom_paranoia_check(struct isi_port const *port,
379 char *name, const char *routine)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 if (!port) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800382 pr_warning("Warning: bad isicom magic for dev %s in %s.\n",
383 name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 return 1;
385 }
386 if (port->magic != ISICOM_MAGIC) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800387 pr_warning("Warning: NULL isicom port for dev %s in %s.\n",
388 name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 return 1;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800390 }
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800391
Linus Torvalds1da177e2005-04-16 15:20:36 -0700392 return 0;
393}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800394
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800396 * Transmitter.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 *
398 * We shovel data into the card buffers on a regular basis. The card
399 * will do the rest of the work for us.
400 */
401
402static void isicom_tx(unsigned long _data)
403{
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700404 unsigned long flags, base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700405 unsigned int retries;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700406 short count = (BOARD_COUNT-1), card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 short txcount, wrd, residue, word_count, cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800408 struct isi_port *port;
409 struct tty_struct *tty;
410
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 /* find next active board */
412 card = (prev_card + 1) & 0x0003;
Alan Cox251b8dd2008-04-30 00:54:12 -0700413 while (count-- > 0) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800414 if (isi_card[card].status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800416 card = (card + 1) & 0x0003;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 }
418 if (!(isi_card[card].status & BOARD_ACTIVE))
419 goto sched_again;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800420
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421 prev_card = card;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800422
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 count = isi_card[card].port_count;
424 port = isi_card[card].ports;
425 base = isi_card[card].base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700426
427 spin_lock_irqsave(&isi_card[card].card_lock, flags);
428 for (retries = 0; retries < 100; retries++) {
429 if (inw(base + 0xe) & 0x1)
430 break;
431 udelay(2);
432 }
433 if (retries >= 100)
434 goto unlock;
435
Alan Coxd450b5a2008-10-13 10:39:58 +0100436 tty = tty_port_tty_get(&port->port);
437 if (tty == NULL)
438 goto put_unlock;
439
Alan Cox251b8dd2008-04-30 00:54:12 -0700440 for (; count > 0; count--, port++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 /* port not active or tx disabled to force flow control */
Alan Coxf1d03222008-07-16 21:55:45 +0100442 if (!(port->port.flags & ASYNC_INITIALIZED) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800443 !(port->status & ISI_TXOK))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 continue;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800445
Linus Torvalds1da177e2005-04-16 15:20:36 -0700446 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700447 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700449
450 if (!(inw(base + 0x02) & (1 << port->channel)))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800451 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700452
Joe Perchesdb91340b2009-12-09 12:34:16 -0800453 pr_debug("txing %d bytes, port%d.\n",
454 txcount, port->channel + 1);
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800455 outw((port->channel << isi_card[card].shift_count) | txcount,
456 base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700457 residue = NO;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800458 wrd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800460 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
461 - port->xmit_tail));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 if (residue == YES) {
463 residue = NO;
464 if (cnt > 0) {
Alan Coxf1d03222008-07-16 21:55:45 +0100465 wrd |= (port->port.xmit_buf[port->xmit_tail]
Jiri Slabya547dfe2006-01-09 20:54:26 -0800466 << 8);
467 port->xmit_tail = (port->xmit_tail + 1)
468 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469 port->xmit_cnt--;
470 txcount--;
471 cnt--;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800472 outw(wrd, base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800473 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700474 outw(wrd, base);
475 break;
476 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800477 }
Alan Cox251b8dd2008-04-30 00:54:12 -0700478 if (cnt <= 0)
479 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700480 word_count = cnt >> 1;
Alan Coxf1d03222008-07-16 21:55:45 +0100481 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800482 port->xmit_tail = (port->xmit_tail
483 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484 txcount -= (word_count << 1);
485 port->xmit_cnt -= (word_count << 1);
486 if (cnt & 0x0001) {
487 residue = YES;
Alan Coxf1d03222008-07-16 21:55:45 +0100488 wrd = port->port.xmit_buf[port->xmit_tail];
Jiri Slabya547dfe2006-01-09 20:54:26 -0800489 port->xmit_tail = (port->xmit_tail + 1)
490 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700491 port->xmit_cnt--;
492 txcount--;
493 }
494 }
495
496 InterruptTheCard(base);
497 if (port->xmit_cnt <= 0)
498 port->status &= ~ISI_TXOK;
499 if (port->xmit_cnt <= WAKEUP_CHARS)
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800500 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800501 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502
Alan Coxd450b5a2008-10-13 10:39:58 +0100503put_unlock:
504 tty_kref_put(tty);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700505unlock:
506 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800507 /* schedule another tx for hopefully in about 10ms */
508sched_again:
Jiri Slaby34b55b82006-12-08 02:38:55 -0800509 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800510}
511
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800513 * Main interrupt handler routine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700514 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800515
David Howells7d12e782006-10-05 14:55:46 +0100516static irqreturn_t isicom_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517{
Jiri Slaby8070e352006-01-09 20:54:22 -0800518 struct isi_board *card = dev_id;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800519 struct isi_port *port;
520 struct tty_struct *tty;
Jiri Slaby8070e352006-01-09 20:54:22 -0800521 unsigned long base;
522 u16 header, word_count, count, channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700523 short byte_count;
Alan Cox33f0f882006-01-09 20:54:13 -0800524 unsigned char *rp;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800525
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526 if (!card || !(card->status & FIRMWARE_LOADED))
527 return IRQ_NONE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800528
Linus Torvalds1da177e2005-04-16 15:20:36 -0700529 base = card->base;
Jiri Slabycb4a10c2007-02-10 01:44:53 -0800530
531 /* did the card interrupt us? */
532 if (!(inw(base + 0x0e) & 0x02))
533 return IRQ_NONE;
534
Linus Torvalds1da177e2005-04-16 15:20:36 -0700535 spin_lock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800536
Jiri Slaby18234f82006-12-08 02:38:51 -0800537 /*
538 * disable any interrupts from the PCI card and lower the
539 * interrupt line
540 */
541 outw(0x8000, base+0x04);
542 ClearInterrupt(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800543
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544 inw(base); /* get the dummy word out */
545 header = inw(base);
546 channel = (header & 0x7800) >> card->shift_count;
547 byte_count = header & 0xff;
548
549 if (channel + 1 > card->port_count) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800550 pr_warning("%s(0x%lx): %d(channel) > port_count.\n",
551 __func__, base, channel+1);
Jiri Slaby18234f82006-12-08 02:38:51 -0800552 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700553 spin_unlock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800554 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700555 }
556 port = card->ports + channel;
Alan Coxf1d03222008-07-16 21:55:45 +0100557 if (!(port->port.flags & ASYNC_INITIALIZED)) {
Jiri Slaby18234f82006-12-08 02:38:51 -0800558 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800559 spin_unlock(&card->card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800561 }
562
Alan Coxd450b5a2008-10-13 10:39:58 +0100563 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700564 if (tty == NULL) {
565 word_count = byte_count >> 1;
Alan Cox251b8dd2008-04-30 00:54:12 -0700566 while (byte_count > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567 inw(base);
568 byte_count -= 2;
569 }
570 if (byte_count & 0x01)
571 inw(base);
Jiri Slaby18234f82006-12-08 02:38:51 -0800572 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700573 spin_unlock(&card->card_lock);
574 return IRQ_HANDLED;
575 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800576
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 if (header & 0x8000) { /* Status Packet */
578 header = inw(base);
Alan Cox251b8dd2008-04-30 00:54:12 -0700579 switch (header & 0xff) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800580 case 0: /* Change in EIA signals */
Alan Coxf1d03222008-07-16 21:55:45 +0100581 if (port->port.flags & ASYNC_CHECK_CD) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800582 if (port->status & ISI_DCD) {
583 if (!(header & ISI_DCD)) {
584 /* Carrier has been lost */
Joe Perchesdb91340b2009-12-09 12:34:16 -0800585 pr_debug("%s: DCD->low.\n",
586 __func__);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 port->status &= ~ISI_DCD;
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800588 tty_hangup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800590 } else if (header & ISI_DCD) {
591 /* Carrier has been detected */
Joe Perchesdb91340b2009-12-09 12:34:16 -0800592 pr_debug("%s: DCD->high.\n",
593 __func__);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800594 port->status |= ISI_DCD;
Alan Coxf1d03222008-07-16 21:55:45 +0100595 wake_up_interruptible(&port->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700596 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800597 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800598 if (header & ISI_DCD)
599 port->status |= ISI_DCD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700600 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800601 port->status &= ~ISI_DCD;
602 }
603
Alan Coxf1d03222008-07-16 21:55:45 +0100604 if (port->port.flags & ASYNC_CTS_FLOW) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100605 if (tty->hw_stopped) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800606 if (header & ISI_CTS) {
Alan Coxf1d03222008-07-16 21:55:45 +0100607 port->port.tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800608 /* start tx ing */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800609 port->status |= (ISI_TXOK
610 | ISI_CTS);
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800611 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800612 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800613 } else if (!(header & ISI_CTS)) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100614 tty->hw_stopped = 1;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800615 /* stop tx ing */
616 port->status &= ~(ISI_TXOK | ISI_CTS);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800617 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800618 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800619 if (header & ISI_CTS)
620 port->status |= ISI_CTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700621 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800622 port->status &= ~ISI_CTS;
623 }
624
625 if (header & ISI_DSR)
626 port->status |= ISI_DSR;
627 else
628 port->status &= ~ISI_DSR;
629
630 if (header & ISI_RI)
631 port->status |= ISI_RI;
632 else
633 port->status &= ~ISI_RI;
634
635 break;
636
Jiri Slabya547dfe2006-01-09 20:54:26 -0800637 case 1: /* Received Break !!! */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800638 tty_insert_flip_char(tty, 0, TTY_BREAK);
Alan Coxf1d03222008-07-16 21:55:45 +0100639 if (port->port.flags & ASYNC_SAK)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800640 do_SAK(tty);
641 tty_flip_buffer_push(tty);
642 break;
643
644 case 2: /* Statistics */
Joe Perchesdb91340b2009-12-09 12:34:16 -0800645 pr_debug("%s: stats!!!\n", __func__);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800646 break;
647
648 default:
Joe Perchesdb91340b2009-12-09 12:34:16 -0800649 pr_debug("%s: Unknown code in status packet.\n",
650 __func__);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800651 break;
652 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800653 } else { /* Data Packet */
Alan Cox33f0f882006-01-09 20:54:13 -0800654
655 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
Joe Perchesdb91340b2009-12-09 12:34:16 -0800656 pr_debug("%s: Can rx %d of %d bytes.\n",
657 __func__, count, byte_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700658 word_count = count >> 1;
Alan Cox33f0f882006-01-09 20:54:13 -0800659 insw(base, rp, word_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 byte_count -= (word_count << 1);
661 if (count & 0x0001) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800662 tty_insert_flip_char(tty, inw(base) & 0xff,
663 TTY_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664 byte_count -= 2;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800665 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700666 if (byte_count > 0) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800667 pr_debug("%s(0x%lx:%d): Flip buffer overflow! dropping bytes...\n",
668 __func__, base, channel + 1);
Alan Cox251b8dd2008-04-30 00:54:12 -0700669 /* drain out unread xtra data */
670 while (byte_count > 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700671 inw(base);
672 byte_count -= 2;
673 }
674 }
Alan Cox33f0f882006-01-09 20:54:13 -0800675 tty_flip_buffer_push(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700676 }
Jiri Slaby18234f82006-12-08 02:38:51 -0800677 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800678 spin_unlock(&card->card_lock);
Alan Coxd450b5a2008-10-13 10:39:58 +0100679 tty_kref_put(tty);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800680
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800682}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683
Alan Coxd450b5a2008-10-13 10:39:58 +0100684static void isicom_config_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685{
Alan Coxd450b5a2008-10-13 10:39:58 +0100686 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800687 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 unsigned long baud;
Jiri Slaby8070e352006-01-09 20:54:22 -0800689 unsigned long base = card->base;
690 u16 channel_setup, channel = port->channel,
691 shift_count = card->shift_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700692 unsigned char flow_ctrl;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800693
Alan Cox251b8dd2008-04-30 00:54:12 -0700694 /* FIXME: Switch to new tty baud API */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700695 baud = C_BAUD(tty);
696 if (baud & CBAUDEX) {
697 baud &= ~CBAUDEX;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800698
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
700 * then the card is programmed for 57.6Kbps or 115Kbps
701 * respectively.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800702 */
703
Jiri Slaby7edc1362007-02-10 01:44:54 -0800704 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
705 if (baud < 1 || baud > 4)
Alan Coxd450b5a2008-10-13 10:39:58 +0100706 tty->termios->c_cflag &= ~CBAUDEX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700707 else
708 baud += 15;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800709 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700710 if (baud == 15) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800711
712 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
Linus Torvalds1da177e2005-04-16 15:20:36 -0700713 * by the set_serial_info ioctl ... this is done by
714 * the 'setserial' utility.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800715 */
716
Alan Coxf1d03222008-07-16 21:55:45 +0100717 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800718 baud++; /* 57.6 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100719 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
Alan Cox251b8dd2008-04-30 00:54:12 -0700720 baud += 2; /* 115 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100721 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800722 baud += 3; /* 230 kbps*/
Alan Coxf1d03222008-07-16 21:55:45 +0100723 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800724 baud += 4; /* 460 kbps*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725 }
726 if (linuxb_to_isib[baud] == -1) {
727 /* hang up */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800728 drop_dtr(port);
729 return;
Alan Cox251b8dd2008-04-30 00:54:12 -0700730 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 raise_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800732
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800733 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700734 outw(0x8000 | (channel << shift_count) | 0x03, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
736 channel_setup = 0;
Alan Cox251b8dd2008-04-30 00:54:12 -0700737 switch (C_CSIZE(tty)) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800738 case CS5:
739 channel_setup |= ISICOM_CS5;
740 break;
741 case CS6:
742 channel_setup |= ISICOM_CS6;
743 break;
744 case CS7:
745 channel_setup |= ISICOM_CS7;
746 break;
747 case CS8:
748 channel_setup |= ISICOM_CS8;
749 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800751
Linus Torvalds1da177e2005-04-16 15:20:36 -0700752 if (C_CSTOPB(tty))
753 channel_setup |= ISICOM_2SB;
754 if (C_PARENB(tty)) {
755 channel_setup |= ISICOM_EVPAR;
756 if (C_PARODD(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800757 channel_setup |= ISICOM_ODPAR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800759 outw(channel_setup, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 InterruptTheCard(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800761 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 if (C_CLOCAL(tty))
Alan Coxf1d03222008-07-16 21:55:45 +0100763 port->port.flags &= ~ASYNC_CHECK_CD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 else
Alan Coxf1d03222008-07-16 21:55:45 +0100765 port->port.flags |= ASYNC_CHECK_CD;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800766
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767 /* flow control settings ...*/
768 flow_ctrl = 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100769 port->port.flags &= ~ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 if (C_CRTSCTS(tty)) {
Alan Coxf1d03222008-07-16 21:55:45 +0100771 port->port.flags |= ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772 flow_ctrl |= ISICOM_CTSRTS;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800773 }
774 if (I_IXON(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
776 if (I_IXOFF(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800777 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
778
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800779 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700780 outw(0x8000 | (channel << shift_count) | 0x04, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781 outw(flow_ctrl << 8 | 0x05, base);
782 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
783 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800785
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786 /* rx enabled -> enable port for rx on the card */
787 if (C_CREAD(tty)) {
788 card->port_status |= (1 << channel);
789 outw(card->port_status, base + 0x02);
790 }
791}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800793/* open et all */
794
795static inline void isicom_setup_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796{
797 int channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800798 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800799
Alan Coxbaaa08a2009-11-30 13:17:24 +0000800 bp->count++;
Alan Cox6ed847d2009-11-30 13:17:30 +0000801 if (!(bp->status & BOARD_INIT)) {
802 port = bp->ports;
803 for (channel = 0; channel < bp->port_count; channel++, port++)
804 drop_dtr_rts(port);
805 }
806 bp->status |= BOARD_ACTIVE | BOARD_INIT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700807}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800808
Alan Cox6ed847d2009-11-30 13:17:30 +0000809/* Activate and thus setup board are protected from races against shutdown
810 by the tty_port mutex */
811
Alan Coxbaaa08a2009-11-30 13:17:24 +0000812static int isicom_activate(struct tty_port *tport, struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700813{
Alan Coxbaaa08a2009-11-30 13:17:24 +0000814 struct isi_port *port = container_of(tport, struct isi_port, port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800815 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800817
Alan Coxbaaa08a2009-11-30 13:17:24 +0000818 if (tty_port_alloc_xmit_buf(tport) < 0)
Alan Coxf1d03222008-07-16 21:55:45 +0100819 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820
821 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxbaaa08a2009-11-30 13:17:24 +0000822 isicom_setup_board(card);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800823
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800825
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826 /* discard any residual data */
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800827 if (WaitTillCardIsFree(card->base) == 0) {
828 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
829 card->base);
830 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
831 InterruptTheCard(card->base);
832 }
Alan Coxd450b5a2008-10-13 10:39:58 +0100833 isicom_config_port(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700834 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800835
836 return 0;
837}
838
Alan Cox31f35932009-01-02 13:45:05 +0000839static int isicom_carrier_raised(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840{
Alan Cox31f35932009-01-02 13:45:05 +0000841 struct isi_port *ip = container_of(port, struct isi_port, port);
842 return (ip->status & ISI_DCD)?1 : 0;
843}
844
Alan Cox11d85d72009-09-19 13:13:27 -0700845static struct tty_port *isicom_find_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700846{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800847 struct isi_port *port;
848 struct isi_board *card;
Jiri Slaby17c4edf2006-12-08 02:38:57 -0800849 unsigned int board;
Alan Cox11d85d72009-09-19 13:13:27 -0700850 int line = tty->index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 if (line < 0 || line > PORT_COUNT-1)
Alan Cox11d85d72009-09-19 13:13:27 -0700853 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 board = BOARD(line);
855 card = &isi_card[board];
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 if (!(card->status & FIRMWARE_LOADED))
Alan Cox11d85d72009-09-19 13:13:27 -0700858 return NULL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800859
Linus Torvalds1da177e2005-04-16 15:20:36 -0700860 /* open on a port greater than the port count for the card !!! */
861 if (line > ((board * 16) + card->port_count - 1))
Alan Cox11d85d72009-09-19 13:13:27 -0700862 return NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700863
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800864 port = &isi_ports[line];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700865 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
Alan Cox11d85d72009-09-19 13:13:27 -0700866 return NULL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800867
Alan Cox11d85d72009-09-19 13:13:27 -0700868 return &port->port;
869}
Alan Coxbaaa08a2009-11-30 13:17:24 +0000870
Alan Cox11d85d72009-09-19 13:13:27 -0700871static int isicom_open(struct tty_struct *tty, struct file *filp)
872{
873 struct isi_port *port;
874 struct isi_board *card;
875 struct tty_port *tport;
Alan Cox11d85d72009-09-19 13:13:27 -0700876
877 tport = isicom_find_port(tty);
878 if (tport == NULL)
879 return -ENODEV;
880 port = container_of(tport, struct isi_port, port);
881 card = &isi_card[BOARD(tty->index)];
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800882
Alan Coxbaaa08a2009-11-30 13:17:24 +0000883 return tty_port_open(tport, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800885
Linus Torvalds1da177e2005-04-16 15:20:36 -0700886/* close et all */
887
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800888/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800889static void isicom_shutdown_port(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800891 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
Linus Torvalds1da177e2005-04-16 15:20:36 -0700893 if (--card->count < 0) {
Joe Perchesdb91340b2009-12-09 12:34:16 -0800894 pr_debug("%s: bad board(0x%lx) count %d.\n",
895 __func__, card->base, card->count);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800896 card->count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 }
Alan Coxbaaa08a2009-11-30 13:17:24 +0000898 /* last port was closed, shutdown that board too */
Alan Cox6ed847d2009-11-30 13:17:30 +0000899 if (!card->count)
900 card->status &= BOARD_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700901}
902
Alan Cox978e5952008-04-30 00:53:59 -0700903static void isicom_flush_buffer(struct tty_struct *tty)
904{
905 struct isi_port *port = tty->driver_data;
906 struct isi_board *card = port->card;
907 unsigned long flags;
908
909 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
910 return;
911
912 spin_lock_irqsave(&card->card_lock, flags);
913 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
914 spin_unlock_irqrestore(&card->card_lock, flags);
915
916 tty_wakeup(tty);
917}
918
Alan Coxbaaa08a2009-11-30 13:17:24 +0000919static void isicom_shutdown(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700920{
Alan Cox6f6412b2009-09-19 13:13:21 -0700921 struct isi_port *ip = container_of(port, struct isi_port, port);
922 struct isi_board *card = ip->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700923 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800924
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800925 /* indicate to the card that no more data can be received
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 on this port */
927 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxbaaa08a2009-11-30 13:17:24 +0000928 card->port_status &= ~(1 << ip->channel);
929 outw(card->port_status, card->base + 0x02);
Alan Coxa6614992009-01-02 13:46:50 +0000930 isicom_shutdown_port(ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700931 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Cox2493c0c2009-11-30 13:17:46 +0000932 tty_port_free_xmit_buf(port);
Alan Cox6f6412b2009-09-19 13:13:21 -0700933}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800934
Alan Cox6f6412b2009-09-19 13:13:21 -0700935static void isicom_close(struct tty_struct *tty, struct file *filp)
936{
937 struct isi_port *ip = tty->driver_data;
938 struct tty_port *port = &ip->port;
939 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
940 return;
Alan Coxbaaa08a2009-11-30 13:17:24 +0000941 tty_port_close(port, tty, filp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700942}
943
944/* write et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800945static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
946 int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947{
Jiri Slaby8070e352006-01-09 20:54:22 -0800948 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800949 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700950 unsigned long flags;
951 int cnt, total = 0;
952
953 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
954 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800955
Linus Torvalds1da177e2005-04-16 15:20:36 -0700956 spin_lock_irqsave(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800957
Alan Cox251b8dd2008-04-30 00:54:12 -0700958 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800959 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
960 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800961 if (cnt <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700962 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800963
Alan Coxf1d03222008-07-16 21:55:45 +0100964 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800965 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
966 - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 port->xmit_cnt += cnt;
968 buf += cnt;
969 count -= cnt;
970 total += cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800971 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
973 port->status |= ISI_TXOK;
974 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800975 return total;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700976}
977
978/* put_char et all */
Alan Coxf34d7a52008-04-30 00:54:13 -0700979static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980{
Jiri Slaby8070e352006-01-09 20:54:22 -0800981 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800982 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800984
Linus Torvalds1da177e2005-04-16 15:20:36 -0700985 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
Alan Coxf34d7a52008-04-30 00:54:13 -0700986 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800987
Linus Torvalds1da177e2005-04-16 15:20:36 -0700988 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -0700989 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
990 spin_unlock_irqrestore(&card->card_lock, flags);
991 return 0;
992 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800993
Alan Coxf1d03222008-07-16 21:55:45 +0100994 port->port.xmit_buf[port->xmit_head++] = ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
996 port->xmit_cnt++;
997 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -0700998 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999}
1000
1001/* flush_chars et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001002static void isicom_flush_chars(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003{
Jiri Slaby8070e352006-01-09 20:54:22 -08001004 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001005
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1007 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001008
Jiri Slabya547dfe2006-01-09 20:54:26 -08001009 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
Alan Coxf1d03222008-07-16 21:55:45 +01001010 !port->port.xmit_buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001012
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 /* this tells the transmitter to consider this port for
1014 data output to the card ... that's the best we can do. */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001015 port->status |= ISI_TXOK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016}
1017
1018/* write_room et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001019static int isicom_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001020{
Jiri Slaby8070e352006-01-09 20:54:22 -08001021 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001022 int free;
1023
1024 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1025 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001026
Linus Torvalds1da177e2005-04-16 15:20:36 -07001027 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1028 if (free < 0)
1029 free = 0;
1030 return free;
1031}
1032
1033/* chars_in_buffer et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001034static int isicom_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001035{
Jiri Slaby8070e352006-01-09 20:54:22 -08001036 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001037 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1038 return 0;
1039 return port->xmit_cnt;
1040}
1041
1042/* ioctl et all */
Alan Cox6d889722008-07-22 11:18:21 +01001043static int isicom_send_break(struct tty_struct *tty, int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001044{
Alan Cox6d889722008-07-22 11:18:21 +01001045 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001046 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -08001047 unsigned long base = card->base;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001048
Alan Cox6d889722008-07-22 11:18:21 +01001049 if (length == -1)
1050 return -EOPNOTSUPP;
1051
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001052 if (!lock_card(card))
Alan Cox6d889722008-07-22 11:18:21 +01001053 return -EINVAL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001054
Linus Torvalds1da177e2005-04-16 15:20:36 -07001055 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1056 outw((length & 0xff) << 8 | 0x00, base);
1057 outw((length & 0xff00), base);
1058 InterruptTheCard(base);
1059
1060 unlock_card(card);
Alan Cox6d889722008-07-22 11:18:21 +01001061 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001062}
1063
1064static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1065{
Jiri Slaby8070e352006-01-09 20:54:22 -08001066 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 /* just send the port status */
Jiri Slaby8070e352006-01-09 20:54:22 -08001068 u16 status = port->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001069
1070 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1071 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001072
Linus Torvalds1da177e2005-04-16 15:20:36 -07001073 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1074 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1075 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1076 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1077 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1078 ((status & ISI_RI ) ? TIOCM_RI : 0);
1079}
1080
1081static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001082 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083{
Jiri Slaby8070e352006-01-09 20:54:22 -08001084 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001085 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001086
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1088 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001089
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001090 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001091 if (set & TIOCM_RTS)
1092 raise_rts(port);
1093 if (set & TIOCM_DTR)
1094 raise_dtr(port);
1095
1096 if (clear & TIOCM_RTS)
1097 drop_rts(port);
1098 if (clear & TIOCM_DTR)
1099 drop_dtr(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001100 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001101
1102 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001103}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001104
Alan Coxd450b5a2008-10-13 10:39:58 +01001105static int isicom_set_serial_info(struct tty_struct *tty,
1106 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001107{
Alan Coxd450b5a2008-10-13 10:39:58 +01001108 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001109 struct serial_struct newinfo;
1110 int reconfig_port;
1111
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001112 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113 return -EFAULT;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001114
Alan Cox1eac4942008-04-30 00:53:19 -07001115 lock_kernel();
1116
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 Cox1eac4942008-04-30 00:53:19 -07001125 unlock_kernel();
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 Cox1eac4942008-04-30 00:53:19 -07001142 unlock_kernel();
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 Cox1eac4942008-04-30 00:53:19 -07001151 lock_kernel();
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 Cox1eac4942008-04-30 00:53:19 -07001161 unlock_kernel();
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
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001167static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
1168 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
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199 if (tty->termios->c_cflag == old_termios->c_cflag &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001200 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
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 if ((old_termios->c_cflag & CRTSCTS) &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001208 !(tty->termios->c_cflag & CRTSCTS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001209 tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001210 isicom_start(tty);
1211 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001212}
1213
1214/* throttle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001215static void isicom_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216{
Jiri Slaby8070e352006-01-09 20:54:22 -08001217 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001218 struct isi_board *card = port->card;
1219
Linus Torvalds1da177e2005-04-16 15:20:36 -07001220 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1221 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001222
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223 /* tell the card that this port cannot handle any more data for now */
1224 card->port_status &= ~(1 << port->channel);
1225 outw(card->port_status, card->base + 0x02);
1226}
1227
1228/* unthrottle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001229static void isicom_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001230{
Jiri Slaby8070e352006-01-09 20:54:22 -08001231 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001232 struct isi_board *card = port->card;
1233
Linus Torvalds1da177e2005-04-16 15:20:36 -07001234 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1235 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237 /* tell the card that this port is ready to accept more data */
1238 card->port_status |= (1 << port->channel);
1239 outw(card->port_status, card->base + 0x02);
1240}
1241
1242/* stop et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001243static void isicom_stop(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001244{
Jiri Slaby8070e352006-01-09 20:54:22 -08001245 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246
1247 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1248 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001249
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250 /* this tells the transmitter not to consider this port for
1251 data output to the card. */
1252 port->status &= ~ISI_TXOK;
1253}
1254
1255/* start et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001256static void isicom_start(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001257{
Jiri Slaby8070e352006-01-09 20:54:22 -08001258 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001259
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1261 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001262
Linus Torvalds1da177e2005-04-16 15:20:36 -07001263 /* this tells the transmitter to consider this port for
1264 data output to the card. */
1265 port->status |= ISI_TXOK;
1266}
1267
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001268static void isicom_hangup(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001269{
Jiri Slaby8070e352006-01-09 20:54:22 -08001270 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001271
Linus Torvalds1da177e2005-04-16 15:20:36 -07001272 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1273 return;
Alan Cox3e616962009-01-02 13:45:26 +00001274 tty_port_hangup(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001275}
1276
Linus Torvalds1da177e2005-04-16 15:20:36 -07001277
Jiri Slaby9ac09482006-01-09 20:54:24 -08001278/*
1279 * Driver init and deinit functions
1280 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001281
Jeff Dikeb68e31d2006-10-02 02:17:18 -07001282static const struct tty_operations isicom_ops = {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001283 .open = isicom_open,
1284 .close = isicom_close,
1285 .write = isicom_write,
1286 .put_char = isicom_put_char,
1287 .flush_chars = isicom_flush_chars,
1288 .write_room = isicom_write_room,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001289 .chars_in_buffer = isicom_chars_in_buffer,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001290 .ioctl = isicom_ioctl,
1291 .set_termios = isicom_set_termios,
1292 .throttle = isicom_throttle,
1293 .unthrottle = isicom_unthrottle,
1294 .stop = isicom_stop,
1295 .start = isicom_start,
1296 .hangup = isicom_hangup,
1297 .flush_buffer = isicom_flush_buffer,
1298 .tiocmget = isicom_tiocmget,
1299 .tiocmset = isicom_tiocmset,
Alan Cox6d889722008-07-22 11:18:21 +01001300 .break_ctl = isicom_send_break,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001301};
1302
Alan Cox31f35932009-01-02 13:45:05 +00001303static const struct tty_port_operations isicom_port_ops = {
1304 .carrier_raised = isicom_carrier_raised,
Alan Coxfcc8ac12009-06-11 12:24:17 +01001305 .dtr_rts = isicom_dtr_rts,
Alan Coxbaaa08a2009-11-30 13:17:24 +00001306 .activate = isicom_activate,
1307 .shutdown = isicom_shutdown,
Alan Cox31f35932009-01-02 13:45:05 +00001308};
1309
Jiri Slaby9ac09482006-01-09 20:54:24 -08001310static int __devinit reset_card(struct pci_dev *pdev,
1311 const unsigned int card, unsigned int *signature)
1312{
1313 struct isi_board *board = pci_get_drvdata(pdev);
1314 unsigned long base = board->base;
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001315 unsigned int sig, portcount = 0;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001316 int retval = 0;
1317
1318 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1319 base);
1320
1321 inw(base + 0x8);
1322
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001323 msleep(10);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001324
1325 outw(0, base + 0x8); /* Reset */
1326
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001327 msleep(1000);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001328
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001329 sig = inw(base + 0x4) & 0xff;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001330
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001331 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1332 sig != 0xee) {
1333 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1334 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1335 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
Jiri Slaby18234f82006-12-08 02:38:51 -08001336 retval = -EIO;
1337 goto end;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001338 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001339
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001340 msleep(10);
1341
1342 portcount = inw(base + 0x2);
Julia Lawall07fb6f22008-03-04 14:29:17 -08001343 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001344 portcount != 8 && portcount != 16)) {
Joe Perches898eb712007-10-18 03:06:30 -07001345 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001346 card + 1);
1347 retval = -EIO;
1348 goto end;
1349 }
1350
1351 switch (sig) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001352 case 0xa5:
1353 case 0xbb:
1354 case 0xdd:
Jiri Slaby18234f82006-12-08 02:38:51 -08001355 board->port_count = (portcount == 4) ? 4 : 8;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001356 board->shift_count = 12;
1357 break;
1358 case 0xcc:
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001359 case 0xee:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001360 board->port_count = 16;
1361 board->shift_count = 11;
1362 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001363 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001364 dev_info(&pdev->dev, "-Done\n");
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001365 *signature = sig;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001366
1367end:
1368 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001369}
1370
Jiri Slabye65c1db2006-01-09 20:54:25 -08001371static int __devinit load_firmware(struct pci_dev *pdev,
1372 const unsigned int index, const unsigned int signature)
1373{
1374 struct isi_board *board = pci_get_drvdata(pdev);
1375 const struct firmware *fw;
1376 unsigned long base = board->base;
1377 unsigned int a;
1378 u16 word_count, status;
1379 int retval = -EIO;
1380 char *name;
1381 u8 *data;
1382
1383 struct stframe {
1384 u16 addr;
1385 u16 count;
1386 u8 data[0];
1387 } *frame;
1388
1389 switch (signature) {
1390 case 0xa5:
1391 name = "isi608.bin";
1392 break;
1393 case 0xbb:
1394 name = "isi608em.bin";
1395 break;
1396 case 0xcc:
1397 name = "isi616em.bin";
1398 break;
1399 case 0xdd:
1400 name = "isi4608.bin";
1401 break;
1402 case 0xee:
1403 name = "isi4616.bin";
1404 break;
1405 default:
1406 dev_err(&pdev->dev, "Unknown signature.\n");
1407 goto end;
Alan Cox251b8dd2008-04-30 00:54:12 -07001408 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001409
1410 retval = request_firmware(&fw, name, &pdev->dev);
1411 if (retval)
1412 goto end;
1413
Jiri Slabye4e04082006-09-30 23:27:50 -07001414 retval = -EIO;
1415
Jiri Slabye65c1db2006-01-09 20:54:25 -08001416 for (frame = (struct stframe *)fw->data;
1417 frame < (struct stframe *)(fw->data + fw->size);
Jiri Slabye4e04082006-09-30 23:27:50 -07001418 frame = (struct stframe *)((u8 *)(frame + 1) +
1419 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001420 if (WaitTillCardIsFree(base))
1421 goto errrelfw;
1422
1423 outw(0xf0, base); /* start upload sequence */
1424 outw(0x00, base);
1425 outw(frame->addr, base); /* lsb of address */
1426
1427 word_count = frame->count / 2 + frame->count % 2;
1428 outw(word_count, base);
1429 InterruptTheCard(base);
1430
1431 udelay(100); /* 0x2f */
1432
1433 if (WaitTillCardIsFree(base))
1434 goto errrelfw;
1435
Alan Cox251b8dd2008-04-30 00:54:12 -07001436 status = inw(base + 0x4);
1437 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001438 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
Joe Perchesad361c92009-07-06 13:05:40 -07001439 "Address:0x%x\n"
1440 "Count:0x%x\n"
1441 "Status:0x%x\n",
1442 index + 1, frame->addr, frame->count, status);
Jiri Slabye65c1db2006-01-09 20:54:25 -08001443 goto errrelfw;
1444 }
1445 outsw(base, frame->data, word_count);
1446
1447 InterruptTheCard(base);
1448
1449 udelay(50); /* 0x0f */
1450
1451 if (WaitTillCardIsFree(base))
1452 goto errrelfw;
1453
Alan Cox251b8dd2008-04-30 00:54:12 -07001454 status = inw(base + 0x4);
1455 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001456 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1457 "Status:0x%x\n", index + 1, status);
1458 goto errrelfw;
1459 }
Alan Cox251b8dd2008-04-30 00:54:12 -07001460 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001461
Jiri Slabye65c1db2006-01-09 20:54:25 -08001462/* XXX: should we test it by reading it back and comparing with original like
1463 * in load firmware package? */
Jiri Slabye4e04082006-09-30 23:27:50 -07001464 for (frame = (struct stframe *)fw->data;
1465 frame < (struct stframe *)(fw->data + fw->size);
1466 frame = (struct stframe *)((u8 *)(frame + 1) +
1467 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001468 if (WaitTillCardIsFree(base))
1469 goto errrelfw;
1470
1471 outw(0xf1, base); /* start download sequence */
1472 outw(0x00, base);
1473 outw(frame->addr, base); /* lsb of address */
1474
1475 word_count = (frame->count >> 1) + frame->count % 2;
1476 outw(word_count + 1, base);
1477 InterruptTheCard(base);
1478
1479 udelay(50); /* 0xf */
1480
1481 if (WaitTillCardIsFree(base))
1482 goto errrelfw;
1483
Alan Cox251b8dd2008-04-30 00:54:12 -07001484 status = inw(base + 0x4);
1485 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001486 dev_warn(&pdev->dev, "Card%d rejected verify header:\n"
Joe Perchesad361c92009-07-06 13:05:40 -07001487 "Address:0x%x\n"
1488 "Count:0x%x\n"
1489 "Status: 0x%x\n",
1490 index + 1, frame->addr, frame->count, status);
Jiri Slabye65c1db2006-01-09 20:54:25 -08001491 goto errrelfw;
1492 }
1493
1494 data = kmalloc(word_count * 2, GFP_KERNEL);
Jiri Slabyf0671372006-12-08 02:38:54 -08001495 if (data == NULL) {
1496 dev_err(&pdev->dev, "Card%d, firmware upload "
1497 "failed, not enough memory\n", index + 1);
1498 goto errrelfw;
1499 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001500 inw(base);
1501 insw(base, data, word_count);
1502 InterruptTheCard(base);
1503
1504 for (a = 0; a < frame->count; a++)
1505 if (data[a] != frame->data[a]) {
1506 kfree(data);
1507 dev_err(&pdev->dev, "Card%d, firmware upload "
1508 "failed\n", index + 1);
1509 goto errrelfw;
1510 }
1511 kfree(data);
1512
1513 udelay(50); /* 0xf */
1514
1515 if (WaitTillCardIsFree(base))
1516 goto errrelfw;
1517
Alan Cox251b8dd2008-04-30 00:54:12 -07001518 status = inw(base + 0x4);
1519 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001520 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1521 "Card Status:0x%x\n", index + 1, status);
1522 goto errrelfw;
1523 }
1524 }
1525
Jiri Slabye4e04082006-09-30 23:27:50 -07001526 /* xfer ctrl */
1527 if (WaitTillCardIsFree(base))
1528 goto errrelfw;
1529
1530 outw(0xf2, base);
1531 outw(0x800, base);
1532 outw(0x0, base);
1533 outw(0x0, base);
1534 InterruptTheCard(base);
1535 outw(0x0, base + 0x4); /* for ISI4608 cards */
1536
Jiri Slabye65c1db2006-01-09 20:54:25 -08001537 board->status |= FIRMWARE_LOADED;
1538 retval = 0;
1539
1540errrelfw:
1541 release_firmware(fw);
1542end:
1543 return retval;
1544}
1545
Jiri Slaby9ac09482006-01-09 20:54:24 -08001546/*
1547 * Insmod can set static symbols so keep these static
1548 */
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001549static unsigned int card_count;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001550
1551static int __devinit isicom_probe(struct pci_dev *pdev,
1552 const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001553{
Jiri Slaby9653a692009-06-17 16:27:48 -07001554 unsigned int uninitialized_var(signature), index;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001555 int retval = -EPERM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001556 struct isi_board *board = NULL;
1557
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001558 if (card_count >= BOARD_COUNT)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001559 goto err;
1560
Jiri Slabye1e57702008-07-16 21:52:56 +01001561 retval = pci_enable_device(pdev);
1562 if (retval) {
1563 dev_err(&pdev->dev, "failed to enable\n");
1564 goto err;
1565 }
1566
Jiri Slaby9ac09482006-01-09 20:54:24 -08001567 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1568
1569 /* allot the first empty slot in the array */
1570 for (index = 0; index < BOARD_COUNT; index++)
1571 if (isi_card[index].base == 0) {
1572 board = &isi_card[index];
1573 break;
1574 }
1575
Jiri Slaby938a7022006-12-08 02:38:52 -08001576 board->index = index;
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001577 board->base = pci_resource_start(pdev, 3);
1578 board->irq = pdev->irq;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001579 card_count++;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001580
1581 pci_set_drvdata(pdev, board);
1582
Jiri Slaby78028da2006-12-08 02:38:53 -08001583 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1584 if (retval) {
Jiri Slaby09a4a112006-12-08 02:38:49 -08001585 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1586 "will be disabled.\n", board->base, board->base + 15,
1587 index + 1);
1588 retval = -EBUSY;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001589 goto errdec;
Alan Cox251b8dd2008-04-30 00:54:12 -07001590 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001591
Jiri Slaby09a4a112006-12-08 02:38:49 -08001592 retval = request_irq(board->irq, isicom_interrupt,
1593 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
1594 if (retval < 0) {
1595 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1596 "Card%d will be disabled.\n", board->irq, index + 1);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001597 goto errunrr;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001598 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001599
1600 retval = reset_card(pdev, index, &signature);
1601 if (retval < 0)
1602 goto errunri;
1603
Jiri Slabye65c1db2006-01-09 20:54:25 -08001604 retval = load_firmware(pdev, index, signature);
1605 if (retval < 0)
1606 goto errunri;
1607
Jiri Slaby938a7022006-12-08 02:38:52 -08001608 for (index = 0; index < board->port_count; index++)
1609 tty_register_device(isicom_normal, board->index * 16 + index,
1610 &pdev->dev);
1611
Jiri Slaby9ac09482006-01-09 20:54:24 -08001612 return 0;
1613
1614errunri:
1615 free_irq(board->irq, board);
1616errunrr:
Jiri Slaby78028da2006-12-08 02:38:53 -08001617 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001618errdec:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001619 board->base = 0;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001620 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001621 pci_disable_device(pdev);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001622err:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001623 return retval;
1624}
1625
1626static void __devexit isicom_remove(struct pci_dev *pdev)
1627{
1628 struct isi_board *board = pci_get_drvdata(pdev);
Jiri Slaby938a7022006-12-08 02:38:52 -08001629 unsigned int i;
1630
1631 for (i = 0; i < board->port_count; i++)
1632 tty_unregister_device(isicom_normal, board->index * 16 + i);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001633
1634 free_irq(board->irq, board);
Jiri Slaby78028da2006-12-08 02:38:53 -08001635 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001636 board->base = 0;
1637 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001638 pci_disable_device(pdev);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001639}
1640
Jiri Slabyca262002006-12-08 02:38:50 -08001641static int __init isicom_init(void)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001642{
1643 int retval, idx, channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001644 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001645
Alan Cox251b8dd2008-04-30 00:54:12 -07001646 for (idx = 0; idx < BOARD_COUNT; idx++) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001647 port = &isi_ports[idx * 16];
1648 isi_card[idx].ports = port;
1649 spin_lock_init(&isi_card[idx].card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650 for (channel = 0; channel < 16; channel++, port++) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001651 tty_port_init(&port->port);
Alan Cox31f35932009-01-02 13:45:05 +00001652 port->port.ops = &isicom_port_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653 port->magic = ISICOM_MAGIC;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001654 port->card = &isi_card[idx];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 port->channel = channel;
Alan Cox44b7d1b2008-07-16 21:57:18 +01001656 port->port.close_delay = 50 * HZ/100;
1657 port->port.closing_wait = 3000 * HZ/100;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001658 port->status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001659 /* . . . */
Alan Cox251b8dd2008-04-30 00:54:12 -07001660 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001661 isi_card[idx].base = 0;
1662 isi_card[idx].irq = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001663 }
1664
Jiri Slaby09a4a112006-12-08 02:38:49 -08001665 /* tty driver structure initialization */
1666 isicom_normal = alloc_tty_driver(PORT_COUNT);
1667 if (!isicom_normal) {
1668 retval = -ENOMEM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001669 goto error;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001670 }
1671
1672 isicom_normal->owner = THIS_MODULE;
1673 isicom_normal->name = "ttyM";
1674 isicom_normal->major = ISICOM_NMAJOR;
1675 isicom_normal->minor_start = 0;
1676 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1677 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1678 isicom_normal->init_termios = tty_std_termios;
1679 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1680 CLOCAL;
Jiri Slaby938a7022006-12-08 02:38:52 -08001681 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
Alan Cox6d889722008-07-22 11:18:21 +01001682 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001683 tty_set_operations(isicom_normal, &isicom_ops);
1684
1685 retval = tty_register_driver(isicom_normal);
1686 if (retval) {
Joe Perchesdb91340b2009-12-09 12:34:16 -08001687 pr_debug("Couldn't register the dialin driver\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001688 goto err_puttty;
1689 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001690
Jiri Slaby9ac09482006-01-09 20:54:24 -08001691 retval = pci_register_driver(&isicom_driver);
1692 if (retval < 0) {
Joe Perchesdb91340b2009-12-09 12:34:16 -08001693 pr_err("Unable to register pci driver.\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001694 goto err_unrtty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001695 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001696
Jiri Slaby34b55b82006-12-08 02:38:55 -08001697 mod_timer(&tx, jiffies + 1);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001698
Linus Torvalds1da177e2005-04-16 15:20:36 -07001699 return 0;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001700err_unrtty:
1701 tty_unregister_driver(isicom_normal);
1702err_puttty:
1703 put_tty_driver(isicom_normal);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001704error:
1705 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706}
1707
1708static void __exit isicom_exit(void)
1709{
Jiri Slabye3273252007-07-17 04:05:18 -07001710 del_timer_sync(&tx);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001711
Jiri Slaby9ac09482006-01-09 20:54:24 -08001712 pci_unregister_driver(&isicom_driver);
Jiri Slaby09a4a112006-12-08 02:38:49 -08001713 tty_unregister_driver(isicom_normal);
1714 put_tty_driver(isicom_normal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001715}
1716
Jiri Slabyca262002006-12-08 02:38:50 -08001717module_init(isicom_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001718module_exit(isicom_exit);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001719
1720MODULE_AUTHOR("MultiTech");
1721MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1722MODULE_LICENSE("GPL");
Ben Hutchingse6c4ef92010-01-13 23:34:18 +00001723MODULE_FIRMWARE("isi608.bin");
1724MODULE_FIRMWARE("isi608em.bin");
1725MODULE_FIRMWARE("isi616em.bin");
1726MODULE_FIRMWARE("isi4608.bin");
1727MODULE_FIRMWARE("isi4616.bin");