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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
116#include <linux/module.h>
Jiri Slabye65c1db2006-01-09 20:54:25 -0800117#include <linux/firmware.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700118#include <linux/kernel.h>
119#include <linux/tty.h>
Alan Cox33f0f882006-01-09 20:54:13 -0800120#include <linux/tty_flip.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121#include <linux/termios.h>
122#include <linux/fs.h>
123#include <linux/sched.h>
124#include <linux/serial.h>
125#include <linux/mm.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126#include <linux/interrupt.h>
127#include <linux/timer.h>
128#include <linux/delay.h>
129#include <linux/ioport.h>
130
Alan Cox251b8dd2008-04-30 00:54:12 -0700131#include <linux/uaccess.h>
132#include <linux/io.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700133#include <asm/system.h>
134
135#include <linux/pci.h>
136
137#include <linux/isicom.h>
138
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800139#define InterruptTheCard(base) outw(0, (base) + 0xc)
140#define ClearInterrupt(base) inw((base) + 0x0a)
141
Jiri Slaby73b52572007-05-08 00:36:29 -0700142#define pr_dbg(str...) pr_debug("ISICOM: " str)
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800143#ifdef DEBUG
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800144#define isicom_paranoia_check(a, b, c) __isicom_paranoia_check((a), (b), (c))
145#else
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800146#define isicom_paranoia_check(a, b, c) 0
147#endif
148
Jiri Slaby9ac09482006-01-09 20:54:24 -0800149static int isicom_probe(struct pci_dev *, const struct pci_device_id *);
150static void __devexit isicom_remove(struct pci_dev *);
151
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152static struct pci_device_id isicom_pci_tbl[] = {
Jiri Slaby9ac09482006-01-09 20:54:24 -0800153 { PCI_DEVICE(VENDOR_ID, 0x2028) },
154 { PCI_DEVICE(VENDOR_ID, 0x2051) },
155 { PCI_DEVICE(VENDOR_ID, 0x2052) },
156 { PCI_DEVICE(VENDOR_ID, 0x2053) },
157 { PCI_DEVICE(VENDOR_ID, 0x2054) },
158 { PCI_DEVICE(VENDOR_ID, 0x2055) },
159 { PCI_DEVICE(VENDOR_ID, 0x2056) },
160 { PCI_DEVICE(VENDOR_ID, 0x2057) },
161 { PCI_DEVICE(VENDOR_ID, 0x2058) },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162 { 0 }
163};
164MODULE_DEVICE_TABLE(pci, isicom_pci_tbl);
165
Jiri Slaby9ac09482006-01-09 20:54:24 -0800166static struct pci_driver isicom_driver = {
167 .name = "isicom",
168 .id_table = isicom_pci_tbl,
169 .probe = isicom_probe,
170 .remove = __devexit_p(isicom_remove)
171};
172
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173static int prev_card = 3; /* start servicing isi_card[0] */
174static struct tty_driver *isicom_normal;
175
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176static void isicom_tx(unsigned long _data);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800177static void isicom_start(struct tty_struct *tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700178
Jiri Slaby34b55b82006-12-08 02:38:55 -0800179static DEFINE_TIMER(tx, isicom_tx, 0, 0);
180
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181/* baud index mappings from linux defns to isi */
182
183static signed char linuxb_to_isib[] = {
Jiri Slaby7edc1362007-02-10 01:44:54 -0800184 -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 13, 15, 16, 17, 18, 19, 20, 21
Linus Torvalds1da177e2005-04-16 15:20:36 -0700185};
186
187struct isi_board {
Jiri Slaby8070e352006-01-09 20:54:22 -0800188 unsigned long base;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700189 int irq;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 unsigned char port_count;
191 unsigned short status;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800192 unsigned short port_status; /* each bit for each port */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 unsigned short shift_count;
Alan Cox251b8dd2008-04-30 00:54:12 -0700194 struct isi_port *ports;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700195 signed char count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196 spinlock_t card_lock; /* Card wide lock 11/5/00 -sameer */
197 unsigned long flags;
Jiri Slaby938a7022006-12-08 02:38:52 -0800198 unsigned int index;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199};
200
201struct isi_port {
202 unsigned short magic;
Alan Coxf1d03222008-07-16 21:55:45 +0100203 struct tty_port port;
Jiri Slaby8070e352006-01-09 20:54:22 -0800204 u16 channel;
205 u16 status;
Alan Cox251b8dd2008-04-30 00:54:12 -0700206 struct isi_board *card;
Alan Cox251b8dd2008-04-30 00:54:12 -0700207 unsigned char *xmit_buf;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208 int xmit_head;
209 int xmit_tail;
210 int xmit_cnt;
211};
212
213static struct isi_board isi_card[BOARD_COUNT];
214static struct isi_port isi_ports[PORT_COUNT];
215
216/*
217 * Locking functions for card level locking. We need to own both
218 * the kernel lock for the card and have the card in a position that
219 * it wants to talk.
220 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800221
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700222static inline int WaitTillCardIsFree(unsigned long base)
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800223{
224 unsigned int count = 0;
225 unsigned int a = in_atomic(); /* do we run under spinlock? */
226
227 while (!(inw(base + 0xe) & 0x1) && count++ < 100)
228 if (a)
229 mdelay(1);
230 else
231 msleep(1);
232
233 return !(inw(base + 0xe) & 0x1);
234}
235
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236static int lock_card(struct isi_board *card)
237{
Jiri Slaby8070e352006-01-09 20:54:22 -0800238 unsigned long base = card->base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700239 unsigned int retries, a;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700241 for (retries = 0; retries < 10; retries++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242 spin_lock_irqsave(&card->card_lock, card->flags);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700243 for (a = 0; a < 10; a++) {
244 if (inw(base + 0xe) & 0x1)
245 return 1;
246 udelay(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 }
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700248 spin_unlock_irqrestore(&card->card_lock, card->flags);
249 msleep(10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800251 printk(KERN_WARNING "ISICOM: Failed to lock Card (0x%lx)\n",
252 card->base);
253
Adrian Bunk04187262006-06-30 18:23:04 +0200254 return 0; /* Failed to acquire the card! */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255}
256
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257static void unlock_card(struct isi_board *card)
258{
259 spin_unlock_irqrestore(&card->card_lock, card->flags);
260}
261
262/*
263 * ISI Card specific ops ...
264 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800265
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800266/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800267static void raise_dtr(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800269 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800270 unsigned long base = card->base;
271 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800273 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700274 return;
275
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800276 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277 outw(0x0504, base);
278 InterruptTheCard(base);
279 port->status |= ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280}
281
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800282/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800283static inline void drop_dtr(struct isi_port *port)
284{
285 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800286 unsigned long base = card->base;
287 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700288
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800289 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290 return;
291
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800292 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 outw(0x0404, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800294 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 port->status &= ~ISI_DTR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296}
297
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800298/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800299static inline void raise_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700300{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800301 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800302 unsigned long base = card->base;
303 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800305 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 return;
307
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800308 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 outw(0x0a04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800310 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 port->status |= ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312}
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800313
314/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800315static inline void drop_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800317 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800318 unsigned long base = card->base;
319 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700320
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800321 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700322 return;
323
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800324 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325 outw(0x0804, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800326 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327 port->status &= ~ISI_RTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328}
329
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800330/* card->lock MUST NOT be held */
Alan Cox5d951fb2009-01-02 13:45:19 +0000331
332static void isicom_raise_dtr_rts(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333{
Alan Cox5d951fb2009-01-02 13:45:19 +0000334 struct isi_port *ip = container_of(port, struct isi_port, port);
335 struct isi_board *card = ip->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800336 unsigned long base = card->base;
Alan Cox5d951fb2009-01-02 13:45:19 +0000337 u16 channel = ip->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338
339 if (!lock_card(card))
340 return;
341
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800342 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 outw(0x0f04, base);
344 InterruptTheCard(base);
Alan Cox5d951fb2009-01-02 13:45:19 +0000345 ip->status |= (ISI_DTR | ISI_RTS);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700346 unlock_card(card);
347}
348
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800349/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800350static void drop_dtr_rts(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800352 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -0800353 unsigned long base = card->base;
354 u16 channel = port->channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700355
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800356 if (WaitTillCardIsFree(base))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 return;
358
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800359 outw(0x8000 | (channel << card->shift_count) | 0x02, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700360 outw(0x0c04, base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800361 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700362 port->status &= ~(ISI_RTS | ISI_DTR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700363}
364
Linus Torvalds1da177e2005-04-16 15:20:36 -0700365/*
366 * ISICOM Driver specific routines ...
367 *
368 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800369
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800370static inline int __isicom_paranoia_check(struct isi_port const *port,
371 char *name, const char *routine)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700372{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 if (!port) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800374 printk(KERN_WARNING "ISICOM: Warning: bad isicom magic for "
375 "dev %s in %s.\n", name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 return 1;
377 }
378 if (port->magic != ISICOM_MAGIC) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800379 printk(KERN_WARNING "ISICOM: Warning: NULL isicom port for "
380 "dev %s in %s.\n", name, routine);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 return 1;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800382 }
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800383
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 return 0;
385}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800386
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800388 * Transmitter.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 *
390 * We shovel data into the card buffers on a regular basis. The card
391 * will do the rest of the work for us.
392 */
393
394static void isicom_tx(unsigned long _data)
395{
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700396 unsigned long flags, base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700397 unsigned int retries;
Jiri Slaby4969b3a2007-07-17 04:05:18 -0700398 short count = (BOARD_COUNT-1), card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 short txcount, wrd, residue, word_count, cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800400 struct isi_port *port;
401 struct tty_struct *tty;
402
Linus Torvalds1da177e2005-04-16 15:20:36 -0700403 /* find next active board */
404 card = (prev_card + 1) & 0x0003;
Alan Cox251b8dd2008-04-30 00:54:12 -0700405 while (count-- > 0) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800406 if (isi_card[card].status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800408 card = (card + 1) & 0x0003;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700409 }
410 if (!(isi_card[card].status & BOARD_ACTIVE))
411 goto sched_again;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800412
Linus Torvalds1da177e2005-04-16 15:20:36 -0700413 prev_card = card;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800414
Linus Torvalds1da177e2005-04-16 15:20:36 -0700415 count = isi_card[card].port_count;
416 port = isi_card[card].ports;
417 base = isi_card[card].base;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700418
419 spin_lock_irqsave(&isi_card[card].card_lock, flags);
420 for (retries = 0; retries < 100; retries++) {
421 if (inw(base + 0xe) & 0x1)
422 break;
423 udelay(2);
424 }
425 if (retries >= 100)
426 goto unlock;
427
Alan Coxd450b5a2008-10-13 10:39:58 +0100428 tty = tty_port_tty_get(&port->port);
429 if (tty == NULL)
430 goto put_unlock;
431
Alan Cox251b8dd2008-04-30 00:54:12 -0700432 for (; count > 0; count--, port++) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 /* port not active or tx disabled to force flow control */
Alan Coxf1d03222008-07-16 21:55:45 +0100434 if (!(port->port.flags & ASYNC_INITIALIZED) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800435 !(port->status & ISI_TXOK))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 continue;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800437
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 txcount = min_t(short, TX_SIZE, port->xmit_cnt);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700439 if (txcount <= 0 || tty->stopped || tty->hw_stopped)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700441
442 if (!(inw(base + 0x02) & (1 << port->channel)))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800443 continue;
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700444
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800445 pr_dbg("txing %d bytes, port%d.\n", txcount,
446 port->channel + 1);
447 outw((port->channel << isi_card[card].shift_count) | txcount,
448 base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 residue = NO;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800450 wrd = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800452 cnt = min_t(int, txcount, (SERIAL_XMIT_SIZE
453 - port->xmit_tail));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700454 if (residue == YES) {
455 residue = NO;
456 if (cnt > 0) {
Alan Coxf1d03222008-07-16 21:55:45 +0100457 wrd |= (port->port.xmit_buf[port->xmit_tail]
Jiri Slabya547dfe2006-01-09 20:54:26 -0800458 << 8);
459 port->xmit_tail = (port->xmit_tail + 1)
460 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700461 port->xmit_cnt--;
462 txcount--;
463 cnt--;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800464 outw(wrd, base);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800465 } else {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 outw(wrd, base);
467 break;
468 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800469 }
Alan Cox251b8dd2008-04-30 00:54:12 -0700470 if (cnt <= 0)
471 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700472 word_count = cnt >> 1;
Alan Coxf1d03222008-07-16 21:55:45 +0100473 outsw(base, port->port.xmit_buf+port->xmit_tail, word_count);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800474 port->xmit_tail = (port->xmit_tail
475 + (word_count << 1)) & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476 txcount -= (word_count << 1);
477 port->xmit_cnt -= (word_count << 1);
478 if (cnt & 0x0001) {
479 residue = YES;
Alan Coxf1d03222008-07-16 21:55:45 +0100480 wrd = port->port.xmit_buf[port->xmit_tail];
Jiri Slabya547dfe2006-01-09 20:54:26 -0800481 port->xmit_tail = (port->xmit_tail + 1)
482 & (SERIAL_XMIT_SIZE - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700483 port->xmit_cnt--;
484 txcount--;
485 }
486 }
487
488 InterruptTheCard(base);
489 if (port->xmit_cnt <= 0)
490 port->status &= ~ISI_TXOK;
491 if (port->xmit_cnt <= WAKEUP_CHARS)
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800492 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800493 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494
Alan Coxd450b5a2008-10-13 10:39:58 +0100495put_unlock:
496 tty_kref_put(tty);
Jiri Slaby5b21f9d2007-07-17 04:05:17 -0700497unlock:
498 spin_unlock_irqrestore(&isi_card[card].card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800499 /* schedule another tx for hopefully in about 10ms */
500sched_again:
Jiri Slaby34b55b82006-12-08 02:38:55 -0800501 mod_timer(&tx, jiffies + msecs_to_jiffies(10));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800502}
503
Linus Torvalds1da177e2005-04-16 15:20:36 -0700504/*
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800505 * Main interrupt handler routine
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800507
David Howells7d12e782006-10-05 14:55:46 +0100508static irqreturn_t isicom_interrupt(int irq, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700509{
Jiri Slaby8070e352006-01-09 20:54:22 -0800510 struct isi_board *card = dev_id;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800511 struct isi_port *port;
512 struct tty_struct *tty;
Jiri Slaby8070e352006-01-09 20:54:22 -0800513 unsigned long base;
514 u16 header, word_count, count, channel;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 short byte_count;
Alan Cox33f0f882006-01-09 20:54:13 -0800516 unsigned char *rp;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800517
Linus Torvalds1da177e2005-04-16 15:20:36 -0700518 if (!card || !(card->status & FIRMWARE_LOADED))
519 return IRQ_NONE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800520
Linus Torvalds1da177e2005-04-16 15:20:36 -0700521 base = card->base;
Jiri Slabycb4a10c2007-02-10 01:44:53 -0800522
523 /* did the card interrupt us? */
524 if (!(inw(base + 0x0e) & 0x02))
525 return IRQ_NONE;
526
Linus Torvalds1da177e2005-04-16 15:20:36 -0700527 spin_lock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800528
Jiri Slaby18234f82006-12-08 02:38:51 -0800529 /*
530 * disable any interrupts from the PCI card and lower the
531 * interrupt line
532 */
533 outw(0x8000, base+0x04);
534 ClearInterrupt(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800535
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536 inw(base); /* get the dummy word out */
537 header = inw(base);
538 channel = (header & 0x7800) >> card->shift_count;
539 byte_count = header & 0xff;
540
541 if (channel + 1 > card->port_count) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800542 printk(KERN_WARNING "ISICOM: isicom_interrupt(0x%lx): "
543 "%d(channel) > port_count.\n", base, channel+1);
Jiri Slaby18234f82006-12-08 02:38:51 -0800544 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700545 spin_unlock(&card->card_lock);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800546 return IRQ_HANDLED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700547 }
548 port = card->ports + channel;
Alan Coxf1d03222008-07-16 21:55:45 +0100549 if (!(port->port.flags & ASYNC_INITIALIZED)) {
Jiri Slaby18234f82006-12-08 02:38:51 -0800550 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800551 spin_unlock(&card->card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800553 }
554
Alan Coxd450b5a2008-10-13 10:39:58 +0100555 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700556 if (tty == NULL) {
557 word_count = byte_count >> 1;
Alan Cox251b8dd2008-04-30 00:54:12 -0700558 while (byte_count > 1) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559 inw(base);
560 byte_count -= 2;
561 }
562 if (byte_count & 0x01)
563 inw(base);
Jiri Slaby18234f82006-12-08 02:38:51 -0800564 outw(0x0000, base+0x04); /* enable interrupts */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700565 spin_unlock(&card->card_lock);
566 return IRQ_HANDLED;
567 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800568
Linus Torvalds1da177e2005-04-16 15:20:36 -0700569 if (header & 0x8000) { /* Status Packet */
570 header = inw(base);
Alan Cox251b8dd2008-04-30 00:54:12 -0700571 switch (header & 0xff) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800572 case 0: /* Change in EIA signals */
Alan Coxf1d03222008-07-16 21:55:45 +0100573 if (port->port.flags & ASYNC_CHECK_CD) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800574 if (port->status & ISI_DCD) {
575 if (!(header & ISI_DCD)) {
576 /* Carrier has been lost */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800577 pr_dbg("interrupt: DCD->low.\n"
578 );
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 port->status &= ~ISI_DCD;
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800580 tty_hangup(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700581 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800582 } else if (header & ISI_DCD) {
583 /* Carrier has been detected */
584 pr_dbg("interrupt: DCD->high.\n");
585 port->status |= ISI_DCD;
Alan Coxf1d03222008-07-16 21:55:45 +0100586 wake_up_interruptible(&port->port.open_wait);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800588 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800589 if (header & ISI_DCD)
590 port->status |= ISI_DCD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800592 port->status &= ~ISI_DCD;
593 }
594
Alan Coxf1d03222008-07-16 21:55:45 +0100595 if (port->port.flags & ASYNC_CTS_FLOW) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100596 if (tty->hw_stopped) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800597 if (header & ISI_CTS) {
Alan Coxf1d03222008-07-16 21:55:45 +0100598 port->port.tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800599 /* start tx ing */
Jiri Slabya547dfe2006-01-09 20:54:26 -0800600 port->status |= (ISI_TXOK
601 | ISI_CTS);
Jiri Slaby0aa5de82007-02-10 01:44:47 -0800602 tty_wakeup(tty);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800603 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800604 } else if (!(header & ISI_CTS)) {
Alan Coxd450b5a2008-10-13 10:39:58 +0100605 tty->hw_stopped = 1;
Jiri Slabya547dfe2006-01-09 20:54:26 -0800606 /* stop tx ing */
607 port->status &= ~(ISI_TXOK | ISI_CTS);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800608 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800609 } else {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800610 if (header & ISI_CTS)
611 port->status |= ISI_CTS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700612 else
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800613 port->status &= ~ISI_CTS;
614 }
615
616 if (header & ISI_DSR)
617 port->status |= ISI_DSR;
618 else
619 port->status &= ~ISI_DSR;
620
621 if (header & ISI_RI)
622 port->status |= ISI_RI;
623 else
624 port->status &= ~ISI_RI;
625
626 break;
627
Jiri Slabya547dfe2006-01-09 20:54:26 -0800628 case 1: /* Received Break !!! */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800629 tty_insert_flip_char(tty, 0, TTY_BREAK);
Alan Coxf1d03222008-07-16 21:55:45 +0100630 if (port->port.flags & ASYNC_SAK)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800631 do_SAK(tty);
632 tty_flip_buffer_push(tty);
633 break;
634
635 case 2: /* Statistics */
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800636 pr_dbg("isicom_interrupt: stats!!!.\n");
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800637 break;
638
639 default:
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800640 pr_dbg("Intr: Unknown code in status packet.\n");
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800641 break;
642 }
Jiri Slabya547dfe2006-01-09 20:54:26 -0800643 } else { /* Data Packet */
Alan Cox33f0f882006-01-09 20:54:13 -0800644
645 count = tty_prepare_flip_string(tty, &rp, byte_count & ~1);
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800646 pr_dbg("Intr: Can rx %d of %d bytes.\n", count, byte_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700647 word_count = count >> 1;
Alan Cox33f0f882006-01-09 20:54:13 -0800648 insw(base, rp, word_count);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700649 byte_count -= (word_count << 1);
650 if (count & 0x0001) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800651 tty_insert_flip_char(tty, inw(base) & 0xff,
652 TTY_NORMAL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700653 byte_count -= 2;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800654 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 if (byte_count > 0) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800656 pr_dbg("Intr(0x%lx:%d): Flip buffer overflow! dropping "
657 "bytes...\n", base, channel + 1);
Alan Cox251b8dd2008-04-30 00:54:12 -0700658 /* drain out unread xtra data */
659 while (byte_count > 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660 inw(base);
661 byte_count -= 2;
662 }
663 }
Alan Cox33f0f882006-01-09 20:54:13 -0800664 tty_flip_buffer_push(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700665 }
Jiri Slaby18234f82006-12-08 02:38:51 -0800666 outw(0x0000, base+0x04); /* enable interrupts */
Jiri Slaby174f1302007-02-10 01:44:52 -0800667 spin_unlock(&card->card_lock);
Alan Coxd450b5a2008-10-13 10:39:58 +0100668 tty_kref_put(tty);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800669
Linus Torvalds1da177e2005-04-16 15:20:36 -0700670 return IRQ_HANDLED;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800671}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672
Alan Coxd450b5a2008-10-13 10:39:58 +0100673static void isicom_config_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700674{
Alan Coxd450b5a2008-10-13 10:39:58 +0100675 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800676 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700677 unsigned long baud;
Jiri Slaby8070e352006-01-09 20:54:22 -0800678 unsigned long base = card->base;
679 u16 channel_setup, channel = port->channel,
680 shift_count = card->shift_count;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700681 unsigned char flow_ctrl;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800682
Alan Cox251b8dd2008-04-30 00:54:12 -0700683 /* FIXME: Switch to new tty baud API */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700684 baud = C_BAUD(tty);
685 if (baud & CBAUDEX) {
686 baud &= ~CBAUDEX;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800687
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 /* if CBAUDEX bit is on and the baud is set to either 50 or 75
689 * then the card is programmed for 57.6Kbps or 115Kbps
690 * respectively.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800691 */
692
Jiri Slaby7edc1362007-02-10 01:44:54 -0800693 /* 1,2,3,4 => 57.6, 115.2, 230, 460 kbps resp. */
694 if (baud < 1 || baud > 4)
Alan Coxd450b5a2008-10-13 10:39:58 +0100695 tty->termios->c_cflag &= ~CBAUDEX;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 else
697 baud += 15;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800698 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 if (baud == 15) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800700
701 /* the ASYNC_SPD_HI and ASYNC_SPD_VHI options are set
Linus Torvalds1da177e2005-04-16 15:20:36 -0700702 * by the set_serial_info ioctl ... this is done by
703 * the 'setserial' utility.
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800704 */
705
Alan Coxf1d03222008-07-16 21:55:45 +0100706 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800707 baud++; /* 57.6 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100708 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
Alan Cox251b8dd2008-04-30 00:54:12 -0700709 baud += 2; /* 115 Kbps */
Alan Coxf1d03222008-07-16 21:55:45 +0100710 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800711 baud += 3; /* 230 kbps*/
Alan Coxf1d03222008-07-16 21:55:45 +0100712 if ((port->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
Jiri Slaby7edc1362007-02-10 01:44:54 -0800713 baud += 4; /* 460 kbps*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714 }
715 if (linuxb_to_isib[baud] == -1) {
716 /* hang up */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800717 drop_dtr(port);
718 return;
Alan Cox251b8dd2008-04-30 00:54:12 -0700719 } else
Linus Torvalds1da177e2005-04-16 15:20:36 -0700720 raise_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800721
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800722 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700723 outw(0x8000 | (channel << shift_count) | 0x03, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700724 outw(linuxb_to_isib[baud] << 8 | 0x03, base);
725 channel_setup = 0;
Alan Cox251b8dd2008-04-30 00:54:12 -0700726 switch (C_CSIZE(tty)) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800727 case CS5:
728 channel_setup |= ISICOM_CS5;
729 break;
730 case CS6:
731 channel_setup |= ISICOM_CS6;
732 break;
733 case CS7:
734 channel_setup |= ISICOM_CS7;
735 break;
736 case CS8:
737 channel_setup |= ISICOM_CS8;
738 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800740
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 if (C_CSTOPB(tty))
742 channel_setup |= ISICOM_2SB;
743 if (C_PARENB(tty)) {
744 channel_setup |= ISICOM_EVPAR;
745 if (C_PARODD(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800746 channel_setup |= ISICOM_ODPAR;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800748 outw(channel_setup, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 InterruptTheCard(base);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800750 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700751 if (C_CLOCAL(tty))
Alan Coxf1d03222008-07-16 21:55:45 +0100752 port->port.flags &= ~ASYNC_CHECK_CD;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700753 else
Alan Coxf1d03222008-07-16 21:55:45 +0100754 port->port.flags |= ASYNC_CHECK_CD;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800755
Linus Torvalds1da177e2005-04-16 15:20:36 -0700756 /* flow control settings ...*/
757 flow_ctrl = 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100758 port->port.flags &= ~ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700759 if (C_CRTSCTS(tty)) {
Alan Coxf1d03222008-07-16 21:55:45 +0100760 port->port.flags |= ASYNC_CTS_FLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700761 flow_ctrl |= ISICOM_CTSRTS;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800762 }
763 if (I_IXON(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700764 flow_ctrl |= ISICOM_RESPOND_XONXOFF;
765 if (I_IXOFF(tty))
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800766 flow_ctrl |= ISICOM_INITIATE_XONXOFF;
767
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800768 if (WaitTillCardIsFree(base) == 0) {
Alan Cox251b8dd2008-04-30 00:54:12 -0700769 outw(0x8000 | (channel << shift_count) | 0x04, base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770 outw(flow_ctrl << 8 | 0x05, base);
771 outw((STOP_CHAR(tty)) << 8 | (START_CHAR(tty)), base);
772 InterruptTheCard(base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700773 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800774
Linus Torvalds1da177e2005-04-16 15:20:36 -0700775 /* rx enabled -> enable port for rx on the card */
776 if (C_CREAD(tty)) {
777 card->port_status |= (1 << channel);
778 outw(card->port_status, base + 0x02);
779 }
780}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800782/* open et all */
783
784static inline void isicom_setup_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700785{
786 int channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800787 struct isi_port *port;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800789
Linus Torvalds1da177e2005-04-16 15:20:36 -0700790 spin_lock_irqsave(&bp->card_lock, flags);
791 if (bp->status & BOARD_ACTIVE) {
792 spin_unlock_irqrestore(&bp->card_lock, flags);
793 return;
794 }
795 port = bp->ports;
796 bp->status |= BOARD_ACTIVE;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800797 for (channel = 0; channel < bp->port_count; channel++, port++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700798 drop_dtr_rts(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800799 spin_unlock_irqrestore(&bp->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800801
Alan Coxd450b5a2008-10-13 10:39:58 +0100802static int isicom_setup_port(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803{
Alan Coxd450b5a2008-10-13 10:39:58 +0100804 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800805 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800807
Alan Coxf1d03222008-07-16 21:55:45 +0100808 if (port->port.flags & ASYNC_INITIALIZED)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 return 0;
Alan Coxf1d03222008-07-16 21:55:45 +0100810 if (tty_port_alloc_xmit_buf(&port->port) < 0)
811 return -ENOMEM;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700812
813 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +0100814 clear_bit(TTY_IO_ERROR, &tty->flags);
Alan Coxf1d03222008-07-16 21:55:45 +0100815 if (port->port.count == 1)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816 card->count++;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800817
Linus Torvalds1da177e2005-04-16 15:20:36 -0700818 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800819
Linus Torvalds1da177e2005-04-16 15:20:36 -0700820 /* discard any residual data */
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800821 if (WaitTillCardIsFree(card->base) == 0) {
822 outw(0x8000 | (port->channel << card->shift_count) | 0x02,
823 card->base);
824 outw(((ISICOM_KILLTX | ISICOM_KILLRX) << 8) | 0x06, card->base);
825 InterruptTheCard(card->base);
826 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800827
Alan Coxd450b5a2008-10-13 10:39:58 +0100828 isicom_config_port(tty);
Alan Coxf1d03222008-07-16 21:55:45 +0100829 port->port.flags |= ASYNC_INITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700830 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800831
832 return 0;
833}
834
Alan Cox31f35932009-01-02 13:45:05 +0000835static int isicom_carrier_raised(struct tty_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700836{
Alan Cox31f35932009-01-02 13:45:05 +0000837 struct isi_port *ip = container_of(port, struct isi_port, port);
838 return (ip->status & ISI_DCD)?1 : 0;
839}
840
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800841static int isicom_open(struct tty_struct *tty, struct file *filp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700842{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800843 struct isi_port *port;
844 struct isi_board *card;
Jiri Slaby17c4edf2006-12-08 02:38:57 -0800845 unsigned int board;
846 int error, line;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700847
848 line = tty->index;
849 if (line < 0 || line > PORT_COUNT-1)
850 return -ENODEV;
851 board = BOARD(line);
852 card = &isi_card[board];
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800853
Linus Torvalds1da177e2005-04-16 15:20:36 -0700854 if (!(card->status & FIRMWARE_LOADED))
855 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800856
Linus Torvalds1da177e2005-04-16 15:20:36 -0700857 /* open on a port greater than the port count for the card !!! */
858 if (line > ((board * 16) + card->port_count - 1))
859 return -ENODEV;
860
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800861 port = &isi_ports[line];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 if (isicom_paranoia_check(port, tty->name, "isicom_open"))
863 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800864
865 isicom_setup_board(card);
866
Alan Cox36c621d2009-01-02 13:46:10 +0000867 /* FIXME: locking on port.count etc */
Alan Coxf1d03222008-07-16 21:55:45 +0100868 port->port.count++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700869 tty->driver_data = port;
Alan Coxd450b5a2008-10-13 10:39:58 +0100870 tty_port_tty_set(&port->port, tty);
871 error = isicom_setup_port(tty);
Alan Cox251b8dd2008-04-30 00:54:12 -0700872 if (error == 0)
Alan Cox36c621d2009-01-02 13:46:10 +0000873 error = tty_port_block_til_ready(&port->port, tty, filp);
Alan Cox251b8dd2008-04-30 00:54:12 -0700874 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875}
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800876
Linus Torvalds1da177e2005-04-16 15:20:36 -0700877/* close et all */
878
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800879static inline void isicom_shutdown_board(struct isi_board *bp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700880{
Alan Cox251b8dd2008-04-30 00:54:12 -0700881 if (bp->status & BOARD_ACTIVE)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882 bp->status &= ~BOARD_ACTIVE;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700883}
884
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800885/* card->lock HAS to be held */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800886static void isicom_shutdown_port(struct isi_port *port)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887{
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800888 struct isi_board *card = port->card;
889 struct tty_struct *tty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800890
Alan Coxd450b5a2008-10-13 10:39:58 +0100891 tty = tty_port_tty_get(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700892
Alan Coxd450b5a2008-10-13 10:39:58 +0100893 if (!(port->port.flags & ASYNC_INITIALIZED)) {
894 tty_kref_put(tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895 return;
Alan Coxd450b5a2008-10-13 10:39:58 +0100896 }
Jiri Slabycfe7c09a2006-12-29 16:48:00 -0800897
Alan Coxf1d03222008-07-16 21:55:45 +0100898 tty_port_free_xmit_buf(&port->port);
899 port->port.flags &= ~ASYNC_INITIALIZED;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 /* 3rd October 2000 : Vinayak P Risbud */
Alan Coxd450b5a2008-10-13 10:39:58 +0100901 tty_port_tty_set(&port->port, NULL);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800902
Linus Torvalds1da177e2005-04-16 15:20:36 -0700903 /*Fix done by Anil .S on 30-04-2001
904 remote login through isi port has dtr toggle problem
905 due to which the carrier drops before the password prompt
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800906 appears on the remote end. Now we drop the dtr only if the
Linus Torvalds1da177e2005-04-16 15:20:36 -0700907 HUPCL(Hangup on close) flag is set for the tty*/
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800908
909 if (C_HUPCL(tty))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700910 /* drop dtr on this port */
911 drop_dtr(port);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800912
913 /* any other port uninits */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914 if (tty)
915 set_bit(TTY_IO_ERROR, &tty->flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800916
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917 if (--card->count < 0) {
Jiri Slabyaaa246e2006-01-09 20:54:23 -0800918 pr_dbg("isicom_shutdown_port: bad board(0x%lx) count %d.\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919 card->base, card->count);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800920 card->count = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700921 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800922
Jiri Slabya547dfe2006-01-09 20:54:26 -0800923 /* last port was closed, shutdown that boad too */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800924 if (C_HUPCL(tty)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700925 if (!card->count)
926 isicom_shutdown_board(card);
927 }
928}
929
Alan Cox978e5952008-04-30 00:53:59 -0700930static void isicom_flush_buffer(struct tty_struct *tty)
931{
932 struct isi_port *port = tty->driver_data;
933 struct isi_board *card = port->card;
934 unsigned long flags;
935
936 if (isicom_paranoia_check(port, tty->name, "isicom_flush_buffer"))
937 return;
938
939 spin_lock_irqsave(&card->card_lock, flags);
940 port->xmit_cnt = port->xmit_head = port->xmit_tail = 0;
941 spin_unlock_irqrestore(&card->card_lock, flags);
942
943 tty_wakeup(tty);
944}
945
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800946static void isicom_close(struct tty_struct *tty, struct file *filp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947{
Alan Coxa6614992009-01-02 13:46:50 +0000948 struct isi_port *ip = tty->driver_data;
949 struct tty_port *port = &ip->port;
Jiri Slabyc387fd82006-11-15 00:30:17 +0100950 struct isi_board *card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800952
Alan Coxa6614992009-01-02 13:46:50 +0000953 BUG_ON(!ip);
954
955 card = ip->card;
956 if (isicom_paranoia_check(ip, tty->name, "isicom_close"))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800958
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800959 /* indicate to the card that no more data can be received
Linus Torvalds1da177e2005-04-16 15:20:36 -0700960 on this port */
961 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxa6614992009-01-02 13:46:50 +0000962 if (port->flags & ASYNC_INITIALIZED) {
963 card->port_status &= ~(1 << ip->channel);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700964 outw(card->port_status, card->base + 0x02);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800965 }
Alan Coxa6614992009-01-02 13:46:50 +0000966 isicom_shutdown_port(ip);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700967 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800968
Alan Cox978e5952008-04-30 00:53:59 -0700969 isicom_flush_buffer(tty);
Alan Coxa6614992009-01-02 13:46:50 +0000970
971 tty_port_close_end(port, tty);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700972}
973
974/* write et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800975static int isicom_write(struct tty_struct *tty, const unsigned char *buf,
976 int count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977{
Jiri Slaby8070e352006-01-09 20:54:22 -0800978 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800979 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700980 unsigned long flags;
981 int cnt, total = 0;
982
983 if (isicom_paranoia_check(port, tty->name, "isicom_write"))
984 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800985
Linus Torvalds1da177e2005-04-16 15:20:36 -0700986 spin_lock_irqsave(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800987
Alan Cox251b8dd2008-04-30 00:54:12 -0700988 while (1) {
Jiri Slabya547dfe2006-01-09 20:54:26 -0800989 cnt = min_t(int, count, min(SERIAL_XMIT_SIZE - port->xmit_cnt
990 - 1, SERIAL_XMIT_SIZE - port->xmit_head));
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800991 if (cnt <= 0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700992 break;
Jiri Slabyd8d16e42006-01-09 20:54:21 -0800993
Alan Coxf1d03222008-07-16 21:55:45 +0100994 memcpy(port->port.xmit_buf + port->xmit_head, buf, cnt);
Jiri Slabya547dfe2006-01-09 20:54:26 -0800995 port->xmit_head = (port->xmit_head + cnt) & (SERIAL_XMIT_SIZE
996 - 1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700997 port->xmit_cnt += cnt;
998 buf += cnt;
999 count -= cnt;
1000 total += cnt;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001001 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 if (port->xmit_cnt && !tty->stopped && !tty->hw_stopped)
1003 port->status |= ISI_TXOK;
1004 spin_unlock_irqrestore(&card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001005 return total;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006}
1007
1008/* put_char et all */
Alan Coxf34d7a52008-04-30 00:54:13 -07001009static int isicom_put_char(struct tty_struct *tty, unsigned char ch)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001010{
Jiri Slaby8070e352006-01-09 20:54:22 -08001011 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001012 struct isi_board *card = port->card;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001013 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001014
Linus Torvalds1da177e2005-04-16 15:20:36 -07001015 if (isicom_paranoia_check(port, tty->name, "isicom_put_char"))
Alan Coxf34d7a52008-04-30 00:54:13 -07001016 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001017
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 spin_lock_irqsave(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -07001019 if (port->xmit_cnt >= SERIAL_XMIT_SIZE - 1) {
1020 spin_unlock_irqrestore(&card->card_lock, flags);
1021 return 0;
1022 }
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001023
Alan Coxf1d03222008-07-16 21:55:45 +01001024 port->port.xmit_buf[port->xmit_head++] = ch;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 port->xmit_head &= (SERIAL_XMIT_SIZE - 1);
1026 port->xmit_cnt++;
1027 spin_unlock_irqrestore(&card->card_lock, flags);
Alan Coxf34d7a52008-04-30 00:54:13 -07001028 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001029}
1030
1031/* flush_chars et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001032static void isicom_flush_chars(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001033{
Jiri Slaby8070e352006-01-09 20:54:22 -08001034 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001035
Linus Torvalds1da177e2005-04-16 15:20:36 -07001036 if (isicom_paranoia_check(port, tty->name, "isicom_flush_chars"))
1037 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001038
Jiri Slabya547dfe2006-01-09 20:54:26 -08001039 if (port->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
Alan Coxf1d03222008-07-16 21:55:45 +01001040 !port->port.xmit_buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001042
Linus Torvalds1da177e2005-04-16 15:20:36 -07001043 /* this tells the transmitter to consider this port for
1044 data output to the card ... that's the best we can do. */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001045 port->status |= ISI_TXOK;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046}
1047
1048/* write_room et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001049static int isicom_write_room(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050{
Jiri Slaby8070e352006-01-09 20:54:22 -08001051 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052 int free;
1053
1054 if (isicom_paranoia_check(port, tty->name, "isicom_write_room"))
1055 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001056
Linus Torvalds1da177e2005-04-16 15:20:36 -07001057 free = SERIAL_XMIT_SIZE - port->xmit_cnt - 1;
1058 if (free < 0)
1059 free = 0;
1060 return free;
1061}
1062
1063/* chars_in_buffer et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001064static int isicom_chars_in_buffer(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001065{
Jiri Slaby8070e352006-01-09 20:54:22 -08001066 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067 if (isicom_paranoia_check(port, tty->name, "isicom_chars_in_buffer"))
1068 return 0;
1069 return port->xmit_cnt;
1070}
1071
1072/* ioctl et all */
Alan Cox6d889722008-07-22 11:18:21 +01001073static int isicom_send_break(struct tty_struct *tty, int length)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001074{
Alan Cox6d889722008-07-22 11:18:21 +01001075 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001076 struct isi_board *card = port->card;
Jiri Slaby8070e352006-01-09 20:54:22 -08001077 unsigned long base = card->base;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001078
Alan Cox6d889722008-07-22 11:18:21 +01001079 if (length == -1)
1080 return -EOPNOTSUPP;
1081
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001082 if (!lock_card(card))
Alan Cox6d889722008-07-22 11:18:21 +01001083 return -EINVAL;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001084
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 outw(0x8000 | ((port->channel) << (card->shift_count)) | 0x3, base);
1086 outw((length & 0xff) << 8 | 0x00, base);
1087 outw((length & 0xff00), base);
1088 InterruptTheCard(base);
1089
1090 unlock_card(card);
Alan Cox6d889722008-07-22 11:18:21 +01001091 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001092}
1093
1094static int isicom_tiocmget(struct tty_struct *tty, struct file *file)
1095{
Jiri Slaby8070e352006-01-09 20:54:22 -08001096 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001097 /* just send the port status */
Jiri Slaby8070e352006-01-09 20:54:22 -08001098 u16 status = port->status;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099
1100 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1101 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001102
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 return ((status & ISI_RTS) ? TIOCM_RTS : 0) |
1104 ((status & ISI_DTR) ? TIOCM_DTR : 0) |
1105 ((status & ISI_DCD) ? TIOCM_CAR : 0) |
1106 ((status & ISI_DSR) ? TIOCM_DSR : 0) |
1107 ((status & ISI_CTS) ? TIOCM_CTS : 0) |
1108 ((status & ISI_RI ) ? TIOCM_RI : 0);
1109}
1110
1111static int isicom_tiocmset(struct tty_struct *tty, struct file *file,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001112 unsigned int set, unsigned int clear)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001113{
Jiri Slaby8070e352006-01-09 20:54:22 -08001114 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001115 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001116
Linus Torvalds1da177e2005-04-16 15:20:36 -07001117 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1118 return -ENODEV;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001119
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001120 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001121 if (set & TIOCM_RTS)
1122 raise_rts(port);
1123 if (set & TIOCM_DTR)
1124 raise_dtr(port);
1125
1126 if (clear & TIOCM_RTS)
1127 drop_rts(port);
1128 if (clear & TIOCM_DTR)
1129 drop_dtr(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001130 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131
1132 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001133}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134
Alan Coxd450b5a2008-10-13 10:39:58 +01001135static int isicom_set_serial_info(struct tty_struct *tty,
1136 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137{
Alan Coxd450b5a2008-10-13 10:39:58 +01001138 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001139 struct serial_struct newinfo;
1140 int reconfig_port;
1141
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001142 if (copy_from_user(&newinfo, info, sizeof(newinfo)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001143 return -EFAULT;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001144
Alan Cox1eac4942008-04-30 00:53:19 -07001145 lock_kernel();
1146
Alan Coxf1d03222008-07-16 21:55:45 +01001147 reconfig_port = ((port->port.flags & ASYNC_SPD_MASK) !=
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001148 (newinfo.flags & ASYNC_SPD_MASK));
1149
Linus Torvalds1da177e2005-04-16 15:20:36 -07001150 if (!capable(CAP_SYS_ADMIN)) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001151 if ((newinfo.close_delay != port->port.close_delay) ||
1152 (newinfo.closing_wait != port->port.closing_wait) ||
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001153 ((newinfo.flags & ~ASYNC_USR_MASK) !=
Alan Coxf1d03222008-07-16 21:55:45 +01001154 (port->port.flags & ~ASYNC_USR_MASK))) {
Alan Cox1eac4942008-04-30 00:53:19 -07001155 unlock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001156 return -EPERM;
Alan Cox1eac4942008-04-30 00:53:19 -07001157 }
Alan Coxf1d03222008-07-16 21:55:45 +01001158 port->port.flags = ((port->port.flags & ~ASYNC_USR_MASK) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001159 (newinfo.flags & ASYNC_USR_MASK));
Alan Cox251b8dd2008-04-30 00:54:12 -07001160 } else {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001161 port->port.close_delay = newinfo.close_delay;
1162 port->port.closing_wait = newinfo.closing_wait;
Alan Coxf1d03222008-07-16 21:55:45 +01001163 port->port.flags = ((port->port.flags & ~ASYNC_FLAGS) |
Linus Torvalds1da177e2005-04-16 15:20:36 -07001164 (newinfo.flags & ASYNC_FLAGS));
1165 }
1166 if (reconfig_port) {
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001167 unsigned long flags;
1168 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001169 isicom_config_port(tty);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001170 spin_unlock_irqrestore(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 }
Alan Cox1eac4942008-04-30 00:53:19 -07001172 unlock_kernel();
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001173 return 0;
1174}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001176static int isicom_get_serial_info(struct isi_port *port,
1177 struct serial_struct __user *info)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178{
1179 struct serial_struct out_info;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001180
Alan Cox1eac4942008-04-30 00:53:19 -07001181 lock_kernel();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001182 memset(&out_info, 0, sizeof(out_info));
1183/* out_info.type = ? */
1184 out_info.line = port - isi_ports;
1185 out_info.port = port->card->base;
1186 out_info.irq = port->card->irq;
Alan Coxf1d03222008-07-16 21:55:45 +01001187 out_info.flags = port->port.flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188/* out_info.baud_base = ? */
Alan Cox44b7d1b2008-07-16 21:57:18 +01001189 out_info.close_delay = port->port.close_delay;
1190 out_info.closing_wait = port->port.closing_wait;
Alan Cox1eac4942008-04-30 00:53:19 -07001191 unlock_kernel();
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001192 if (copy_to_user(info, &out_info, sizeof(out_info)))
Linus Torvalds1da177e2005-04-16 15:20:36 -07001193 return -EFAULT;
1194 return 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001195}
Linus Torvalds1da177e2005-04-16 15:20:36 -07001196
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001197static int isicom_ioctl(struct tty_struct *tty, struct file *filp,
1198 unsigned int cmd, unsigned long arg)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001199{
Jiri Slaby8070e352006-01-09 20:54:22 -08001200 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001201 void __user *argp = (void __user *)arg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202
1203 if (isicom_paranoia_check(port, tty->name, "isicom_ioctl"))
1204 return -ENODEV;
1205
Alan Cox251b8dd2008-04-30 00:54:12 -07001206 switch (cmd) {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001207 case TIOCGSERIAL:
1208 return isicom_get_serial_info(port, argp);
1209
1210 case TIOCSSERIAL:
Alan Coxd450b5a2008-10-13 10:39:58 +01001211 return isicom_set_serial_info(tty, argp);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001212
1213 default:
1214 return -ENOIOCTLCMD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001215 }
1216 return 0;
1217}
1218
1219/* set_termios et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001220static void isicom_set_termios(struct tty_struct *tty,
Alan Cox606d0992006-12-08 02:38:45 -08001221 struct ktermios *old_termios)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001222{
Jiri Slaby8070e352006-01-09 20:54:22 -08001223 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001224 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001225
Linus Torvalds1da177e2005-04-16 15:20:36 -07001226 if (isicom_paranoia_check(port, tty->name, "isicom_set_termios"))
1227 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001228
Linus Torvalds1da177e2005-04-16 15:20:36 -07001229 if (tty->termios->c_cflag == old_termios->c_cflag &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001230 tty->termios->c_iflag == old_termios->c_iflag)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001231 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001232
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001233 spin_lock_irqsave(&port->card->card_lock, flags);
Alan Coxd450b5a2008-10-13 10:39:58 +01001234 isicom_config_port(tty);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001235 spin_unlock_irqrestore(&port->card->card_lock, flags);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001236
Linus Torvalds1da177e2005-04-16 15:20:36 -07001237 if ((old_termios->c_cflag & CRTSCTS) &&
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001238 !(tty->termios->c_cflag & CRTSCTS)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001239 tty->hw_stopped = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001240 isicom_start(tty);
1241 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001242}
1243
1244/* throttle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001245static void isicom_throttle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001246{
Jiri Slaby8070e352006-01-09 20:54:22 -08001247 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001248 struct isi_board *card = port->card;
1249
Linus Torvalds1da177e2005-04-16 15:20:36 -07001250 if (isicom_paranoia_check(port, tty->name, "isicom_throttle"))
1251 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001252
Linus Torvalds1da177e2005-04-16 15:20:36 -07001253 /* tell the card that this port cannot handle any more data for now */
1254 card->port_status &= ~(1 << port->channel);
1255 outw(card->port_status, card->base + 0x02);
1256}
1257
1258/* unthrottle et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001259static void isicom_unthrottle(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001260{
Jiri Slaby8070e352006-01-09 20:54:22 -08001261 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001262 struct isi_board *card = port->card;
1263
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264 if (isicom_paranoia_check(port, tty->name, "isicom_unthrottle"))
1265 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001266
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 /* tell the card that this port is ready to accept more data */
1268 card->port_status |= (1 << port->channel);
1269 outw(card->port_status, card->base + 0x02);
1270}
1271
1272/* stop et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001273static void isicom_stop(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001274{
Jiri Slaby8070e352006-01-09 20:54:22 -08001275 struct isi_port *port = tty->driver_data;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276
1277 if (isicom_paranoia_check(port, tty->name, "isicom_stop"))
1278 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001279
Linus Torvalds1da177e2005-04-16 15:20:36 -07001280 /* this tells the transmitter not to consider this port for
1281 data output to the card. */
1282 port->status &= ~ISI_TXOK;
1283}
1284
1285/* start et all */
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001286static void isicom_start(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001287{
Jiri Slaby8070e352006-01-09 20:54:22 -08001288 struct isi_port *port = tty->driver_data;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001289
Linus Torvalds1da177e2005-04-16 15:20:36 -07001290 if (isicom_paranoia_check(port, tty->name, "isicom_start"))
1291 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001292
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293 /* this tells the transmitter to consider this port for
1294 data output to the card. */
1295 port->status |= ISI_TXOK;
1296}
1297
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001298static void isicom_hangup(struct tty_struct *tty)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001299{
Jiri Slaby8070e352006-01-09 20:54:22 -08001300 struct isi_port *port = tty->driver_data;
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001301 unsigned long flags;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001302
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303 if (isicom_paranoia_check(port, tty->name, "isicom_hangup"))
1304 return;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001305
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001306 spin_lock_irqsave(&port->card->card_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001307 isicom_shutdown_port(port);
Jiri Slabycfe7c09a2006-12-29 16:48:00 -08001308 spin_unlock_irqrestore(&port->card->card_lock, flags);
1309
Alan Cox3e616962009-01-02 13:45:26 +00001310 tty_port_hangup(&port->port);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001311}
1312
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313
Jiri Slaby9ac09482006-01-09 20:54:24 -08001314/*
1315 * Driver init and deinit functions
1316 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001317
Jeff Dikeb68e31d2006-10-02 02:17:18 -07001318static const struct tty_operations isicom_ops = {
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001319 .open = isicom_open,
1320 .close = isicom_close,
1321 .write = isicom_write,
1322 .put_char = isicom_put_char,
1323 .flush_chars = isicom_flush_chars,
1324 .write_room = isicom_write_room,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001325 .chars_in_buffer = isicom_chars_in_buffer,
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001326 .ioctl = isicom_ioctl,
1327 .set_termios = isicom_set_termios,
1328 .throttle = isicom_throttle,
1329 .unthrottle = isicom_unthrottle,
1330 .stop = isicom_stop,
1331 .start = isicom_start,
1332 .hangup = isicom_hangup,
1333 .flush_buffer = isicom_flush_buffer,
1334 .tiocmget = isicom_tiocmget,
1335 .tiocmset = isicom_tiocmset,
Alan Cox6d889722008-07-22 11:18:21 +01001336 .break_ctl = isicom_send_break,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001337};
1338
Alan Cox31f35932009-01-02 13:45:05 +00001339static const struct tty_port_operations isicom_port_ops = {
1340 .carrier_raised = isicom_carrier_raised,
Alan Cox5d951fb2009-01-02 13:45:19 +00001341 .raise_dtr_rts = isicom_raise_dtr_rts,
Alan Cox31f35932009-01-02 13:45:05 +00001342};
1343
Jiri Slaby9ac09482006-01-09 20:54:24 -08001344static int __devinit reset_card(struct pci_dev *pdev,
1345 const unsigned int card, unsigned int *signature)
1346{
1347 struct isi_board *board = pci_get_drvdata(pdev);
1348 unsigned long base = board->base;
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001349 unsigned int sig, portcount = 0;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001350 int retval = 0;
1351
1352 dev_dbg(&pdev->dev, "ISILoad:Resetting Card%d at 0x%lx\n", card + 1,
1353 base);
1354
1355 inw(base + 0x8);
1356
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001357 msleep(10);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001358
1359 outw(0, base + 0x8); /* Reset */
1360
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001361 msleep(1000);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001362
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001363 sig = inw(base + 0x4) & 0xff;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001364
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001365 if (sig != 0xa5 && sig != 0xbb && sig != 0xcc && sig != 0xdd &&
1366 sig != 0xee) {
1367 dev_warn(&pdev->dev, "ISILoad:Card%u reset failure (Possible "
1368 "bad I/O Port Address 0x%lx).\n", card + 1, base);
1369 dev_dbg(&pdev->dev, "Sig=0x%x\n", sig);
Jiri Slaby18234f82006-12-08 02:38:51 -08001370 retval = -EIO;
1371 goto end;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001372 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001373
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001374 msleep(10);
1375
1376 portcount = inw(base + 0x2);
Julia Lawall07fb6f22008-03-04 14:29:17 -08001377 if (!(inw(base + 0xe) & 0x1) || (portcount != 0 && portcount != 4 &&
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001378 portcount != 8 && portcount != 16)) {
Joe Perches898eb712007-10-18 03:06:30 -07001379 dev_err(&pdev->dev, "ISILoad:PCI Card%d reset failure.\n",
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001380 card + 1);
1381 retval = -EIO;
1382 goto end;
1383 }
1384
1385 switch (sig) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001386 case 0xa5:
1387 case 0xbb:
1388 case 0xdd:
Jiri Slaby18234f82006-12-08 02:38:51 -08001389 board->port_count = (portcount == 4) ? 4 : 8;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001390 board->shift_count = 12;
1391 break;
1392 case 0xcc:
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001393 case 0xee:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001394 board->port_count = 16;
1395 board->shift_count = 11;
1396 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001397 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001398 dev_info(&pdev->dev, "-Done\n");
Jiri Slabyf0a0ba62007-02-10 01:44:52 -08001399 *signature = sig;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001400
1401end:
1402 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001403}
1404
Jiri Slabye65c1db2006-01-09 20:54:25 -08001405static int __devinit load_firmware(struct pci_dev *pdev,
1406 const unsigned int index, const unsigned int signature)
1407{
1408 struct isi_board *board = pci_get_drvdata(pdev);
1409 const struct firmware *fw;
1410 unsigned long base = board->base;
1411 unsigned int a;
1412 u16 word_count, status;
1413 int retval = -EIO;
1414 char *name;
1415 u8 *data;
1416
1417 struct stframe {
1418 u16 addr;
1419 u16 count;
1420 u8 data[0];
1421 } *frame;
1422
1423 switch (signature) {
1424 case 0xa5:
1425 name = "isi608.bin";
1426 break;
1427 case 0xbb:
1428 name = "isi608em.bin";
1429 break;
1430 case 0xcc:
1431 name = "isi616em.bin";
1432 break;
1433 case 0xdd:
1434 name = "isi4608.bin";
1435 break;
1436 case 0xee:
1437 name = "isi4616.bin";
1438 break;
1439 default:
1440 dev_err(&pdev->dev, "Unknown signature.\n");
1441 goto end;
Alan Cox251b8dd2008-04-30 00:54:12 -07001442 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001443
1444 retval = request_firmware(&fw, name, &pdev->dev);
1445 if (retval)
1446 goto end;
1447
Jiri Slabye4e04082006-09-30 23:27:50 -07001448 retval = -EIO;
1449
Jiri Slabye65c1db2006-01-09 20:54:25 -08001450 for (frame = (struct stframe *)fw->data;
1451 frame < (struct stframe *)(fw->data + fw->size);
Jiri Slabye4e04082006-09-30 23:27:50 -07001452 frame = (struct stframe *)((u8 *)(frame + 1) +
1453 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001454 if (WaitTillCardIsFree(base))
1455 goto errrelfw;
1456
1457 outw(0xf0, base); /* start upload sequence */
1458 outw(0x00, base);
1459 outw(frame->addr, base); /* lsb of address */
1460
1461 word_count = frame->count / 2 + frame->count % 2;
1462 outw(word_count, base);
1463 InterruptTheCard(base);
1464
1465 udelay(100); /* 0x2f */
1466
1467 if (WaitTillCardIsFree(base))
1468 goto errrelfw;
1469
Alan Cox251b8dd2008-04-30 00:54:12 -07001470 status = inw(base + 0x4);
1471 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001472 dev_warn(&pdev->dev, "Card%d rejected load header:\n"
Joe Perches898eb712007-10-18 03:06:30 -07001473 KERN_WARNING "Address:0x%x\n"
1474 KERN_WARNING "Count:0x%x\n"
1475 KERN_WARNING "Status:0x%x\n",
Jiri Slabye65c1db2006-01-09 20:54:25 -08001476 index + 1, frame->addr, frame->count, status);
1477 goto errrelfw;
1478 }
1479 outsw(base, frame->data, word_count);
1480
1481 InterruptTheCard(base);
1482
1483 udelay(50); /* 0x0f */
1484
1485 if (WaitTillCardIsFree(base))
1486 goto errrelfw;
1487
Alan Cox251b8dd2008-04-30 00:54:12 -07001488 status = inw(base + 0x4);
1489 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001490 dev_err(&pdev->dev, "Card%d got out of sync.Card "
1491 "Status:0x%x\n", index + 1, status);
1492 goto errrelfw;
1493 }
Alan Cox251b8dd2008-04-30 00:54:12 -07001494 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001495
Jiri Slabye65c1db2006-01-09 20:54:25 -08001496/* XXX: should we test it by reading it back and comparing with original like
1497 * in load firmware package? */
Jiri Slabye4e04082006-09-30 23:27:50 -07001498 for (frame = (struct stframe *)fw->data;
1499 frame < (struct stframe *)(fw->data + fw->size);
1500 frame = (struct stframe *)((u8 *)(frame + 1) +
1501 frame->count)) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001502 if (WaitTillCardIsFree(base))
1503 goto errrelfw;
1504
1505 outw(0xf1, base); /* start download sequence */
1506 outw(0x00, base);
1507 outw(frame->addr, base); /* lsb of address */
1508
1509 word_count = (frame->count >> 1) + frame->count % 2;
1510 outw(word_count + 1, base);
1511 InterruptTheCard(base);
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_warn(&pdev->dev, "Card%d rejected verify header:\n"
Joe Perches898eb712007-10-18 03:06:30 -07001521 KERN_WARNING "Address:0x%x\n"
1522 KERN_WARNING "Count:0x%x\n"
1523 KERN_WARNING "Status: 0x%x\n",
Jiri Slabye65c1db2006-01-09 20:54:25 -08001524 index + 1, frame->addr, frame->count, status);
1525 goto errrelfw;
1526 }
1527
1528 data = kmalloc(word_count * 2, GFP_KERNEL);
Jiri Slabyf0671372006-12-08 02:38:54 -08001529 if (data == NULL) {
1530 dev_err(&pdev->dev, "Card%d, firmware upload "
1531 "failed, not enough memory\n", index + 1);
1532 goto errrelfw;
1533 }
Jiri Slabye65c1db2006-01-09 20:54:25 -08001534 inw(base);
1535 insw(base, data, word_count);
1536 InterruptTheCard(base);
1537
1538 for (a = 0; a < frame->count; a++)
1539 if (data[a] != frame->data[a]) {
1540 kfree(data);
1541 dev_err(&pdev->dev, "Card%d, firmware upload "
1542 "failed\n", index + 1);
1543 goto errrelfw;
1544 }
1545 kfree(data);
1546
1547 udelay(50); /* 0xf */
1548
1549 if (WaitTillCardIsFree(base))
1550 goto errrelfw;
1551
Alan Cox251b8dd2008-04-30 00:54:12 -07001552 status = inw(base + 0x4);
1553 if (status != 0) {
Jiri Slabye65c1db2006-01-09 20:54:25 -08001554 dev_err(&pdev->dev, "Card%d verify got out of sync. "
1555 "Card Status:0x%x\n", index + 1, status);
1556 goto errrelfw;
1557 }
1558 }
1559
Jiri Slabye4e04082006-09-30 23:27:50 -07001560 /* xfer ctrl */
1561 if (WaitTillCardIsFree(base))
1562 goto errrelfw;
1563
1564 outw(0xf2, base);
1565 outw(0x800, base);
1566 outw(0x0, base);
1567 outw(0x0, base);
1568 InterruptTheCard(base);
1569 outw(0x0, base + 0x4); /* for ISI4608 cards */
1570
Jiri Slabye65c1db2006-01-09 20:54:25 -08001571 board->status |= FIRMWARE_LOADED;
1572 retval = 0;
1573
1574errrelfw:
1575 release_firmware(fw);
1576end:
1577 return retval;
1578}
1579
Jiri Slaby9ac09482006-01-09 20:54:24 -08001580/*
1581 * Insmod can set static symbols so keep these static
1582 */
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001583static unsigned int card_count;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001584
1585static int __devinit isicom_probe(struct pci_dev *pdev,
1586 const struct pci_device_id *ent)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001587{
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001588 unsigned int signature, index;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001589 int retval = -EPERM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001590 struct isi_board *board = NULL;
1591
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001592 if (card_count >= BOARD_COUNT)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001593 goto err;
1594
Jiri Slabye1e57702008-07-16 21:52:56 +01001595 retval = pci_enable_device(pdev);
1596 if (retval) {
1597 dev_err(&pdev->dev, "failed to enable\n");
1598 goto err;
1599 }
1600
Jiri Slaby9ac09482006-01-09 20:54:24 -08001601 dev_info(&pdev->dev, "ISI PCI Card(Device ID 0x%x)\n", ent->device);
1602
1603 /* allot the first empty slot in the array */
1604 for (index = 0; index < BOARD_COUNT; index++)
1605 if (isi_card[index].base == 0) {
1606 board = &isi_card[index];
1607 break;
1608 }
1609
Jiri Slaby938a7022006-12-08 02:38:52 -08001610 board->index = index;
Jiri Slaby4969b3a2007-07-17 04:05:18 -07001611 board->base = pci_resource_start(pdev, 3);
1612 board->irq = pdev->irq;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001613 card_count++;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001614
1615 pci_set_drvdata(pdev, board);
1616
Jiri Slaby78028da2006-12-08 02:38:53 -08001617 retval = pci_request_region(pdev, 3, ISICOM_NAME);
1618 if (retval) {
Jiri Slaby09a4a112006-12-08 02:38:49 -08001619 dev_err(&pdev->dev, "I/O Region 0x%lx-0x%lx is busy. Card%d "
1620 "will be disabled.\n", board->base, board->base + 15,
1621 index + 1);
1622 retval = -EBUSY;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001623 goto errdec;
Alan Cox251b8dd2008-04-30 00:54:12 -07001624 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001625
Jiri Slaby09a4a112006-12-08 02:38:49 -08001626 retval = request_irq(board->irq, isicom_interrupt,
1627 IRQF_SHARED | IRQF_DISABLED, ISICOM_NAME, board);
1628 if (retval < 0) {
1629 dev_err(&pdev->dev, "Could not install handler at Irq %d. "
1630 "Card%d will be disabled.\n", board->irq, index + 1);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001631 goto errunrr;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001632 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001633
1634 retval = reset_card(pdev, index, &signature);
1635 if (retval < 0)
1636 goto errunri;
1637
Jiri Slabye65c1db2006-01-09 20:54:25 -08001638 retval = load_firmware(pdev, index, signature);
1639 if (retval < 0)
1640 goto errunri;
1641
Jiri Slaby938a7022006-12-08 02:38:52 -08001642 for (index = 0; index < board->port_count; index++)
1643 tty_register_device(isicom_normal, board->index * 16 + index,
1644 &pdev->dev);
1645
Jiri Slaby9ac09482006-01-09 20:54:24 -08001646 return 0;
1647
1648errunri:
1649 free_irq(board->irq, board);
1650errunrr:
Jiri Slaby78028da2006-12-08 02:38:53 -08001651 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001652errdec:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001653 board->base = 0;
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001654 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001655 pci_disable_device(pdev);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001656err:
Jiri Slaby9ac09482006-01-09 20:54:24 -08001657 return retval;
1658}
1659
1660static void __devexit isicom_remove(struct pci_dev *pdev)
1661{
1662 struct isi_board *board = pci_get_drvdata(pdev);
Jiri Slaby938a7022006-12-08 02:38:52 -08001663 unsigned int i;
1664
1665 for (i = 0; i < board->port_count; i++)
1666 tty_unregister_device(isicom_normal, board->index * 16 + i);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001667
1668 free_irq(board->irq, board);
Jiri Slaby78028da2006-12-08 02:38:53 -08001669 pci_release_region(pdev, 3);
Jiri Slaby1ed0c0b2007-02-10 01:44:55 -08001670 board->base = 0;
1671 card_count--;
Jiri Slabye1e57702008-07-16 21:52:56 +01001672 pci_disable_device(pdev);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001673}
1674
Jiri Slabyca262002006-12-08 02:38:50 -08001675static int __init isicom_init(void)
Jiri Slaby9ac09482006-01-09 20:54:24 -08001676{
1677 int retval, idx, channel;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001678 struct isi_port *port;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001679
Alan Cox251b8dd2008-04-30 00:54:12 -07001680 for (idx = 0; idx < BOARD_COUNT; idx++) {
Jiri Slaby9ac09482006-01-09 20:54:24 -08001681 port = &isi_ports[idx * 16];
1682 isi_card[idx].ports = port;
1683 spin_lock_init(&isi_card[idx].card_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001684 for (channel = 0; channel < 16; channel++, port++) {
Alan Cox44b7d1b2008-07-16 21:57:18 +01001685 tty_port_init(&port->port);
Alan Cox31f35932009-01-02 13:45:05 +00001686 port->port.ops = &isicom_port_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001687 port->magic = ISICOM_MAGIC;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001688 port->card = &isi_card[idx];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689 port->channel = channel;
Alan Cox44b7d1b2008-07-16 21:57:18 +01001690 port->port.close_delay = 50 * HZ/100;
1691 port->port.closing_wait = 3000 * HZ/100;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001692 port->status = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001693 /* . . . */
Alan Cox251b8dd2008-04-30 00:54:12 -07001694 }
Jiri Slaby9ac09482006-01-09 20:54:24 -08001695 isi_card[idx].base = 0;
1696 isi_card[idx].irq = 0;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001697 }
1698
Jiri Slaby09a4a112006-12-08 02:38:49 -08001699 /* tty driver structure initialization */
1700 isicom_normal = alloc_tty_driver(PORT_COUNT);
1701 if (!isicom_normal) {
1702 retval = -ENOMEM;
Jiri Slaby9ac09482006-01-09 20:54:24 -08001703 goto error;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001704 }
1705
1706 isicom_normal->owner = THIS_MODULE;
1707 isicom_normal->name = "ttyM";
1708 isicom_normal->major = ISICOM_NMAJOR;
1709 isicom_normal->minor_start = 0;
1710 isicom_normal->type = TTY_DRIVER_TYPE_SERIAL;
1711 isicom_normal->subtype = SERIAL_TYPE_NORMAL;
1712 isicom_normal->init_termios = tty_std_termios;
1713 isicom_normal->init_termios.c_cflag = B9600 | CS8 | CREAD | HUPCL |
1714 CLOCAL;
Jiri Slaby938a7022006-12-08 02:38:52 -08001715 isicom_normal->flags = TTY_DRIVER_REAL_RAW |
Alan Cox6d889722008-07-22 11:18:21 +01001716 TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_HARDWARE_BREAK;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001717 tty_set_operations(isicom_normal, &isicom_ops);
1718
1719 retval = tty_register_driver(isicom_normal);
1720 if (retval) {
1721 pr_dbg("Couldn't register the dialin driver\n");
1722 goto err_puttty;
1723 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001724
Jiri Slaby9ac09482006-01-09 20:54:24 -08001725 retval = pci_register_driver(&isicom_driver);
1726 if (retval < 0) {
1727 printk(KERN_ERR "ISICOM: Unable to register pci driver.\n");
Jiri Slaby09a4a112006-12-08 02:38:49 -08001728 goto err_unrtty;
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001729 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001730
Jiri Slaby34b55b82006-12-08 02:38:55 -08001731 mod_timer(&tx, jiffies + 1);
Jiri Slabyd8d16e42006-01-09 20:54:21 -08001732
Linus Torvalds1da177e2005-04-16 15:20:36 -07001733 return 0;
Jiri Slaby09a4a112006-12-08 02:38:49 -08001734err_unrtty:
1735 tty_unregister_driver(isicom_normal);
1736err_puttty:
1737 put_tty_driver(isicom_normal);
Jiri Slaby9ac09482006-01-09 20:54:24 -08001738error:
1739 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001740}
1741
1742static void __exit isicom_exit(void)
1743{
Jiri Slabye3273252007-07-17 04:05:18 -07001744 del_timer_sync(&tx);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001745
Jiri Slaby9ac09482006-01-09 20:54:24 -08001746 pci_unregister_driver(&isicom_driver);
Jiri Slaby09a4a112006-12-08 02:38:49 -08001747 tty_unregister_driver(isicom_normal);
1748 put_tty_driver(isicom_normal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001749}
1750
Jiri Slabyca262002006-12-08 02:38:50 -08001751module_init(isicom_init);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752module_exit(isicom_exit);
Jiri Slabyaaa246e2006-01-09 20:54:23 -08001753
1754MODULE_AUTHOR("MultiTech");
1755MODULE_DESCRIPTION("Driver for the ISI series of cards by MultiTech");
1756MODULE_LICENSE("GPL");