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Merge tag 'char-misc-4.6-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...
[deliverable/linux.git] / drivers / tty / cyclades.c
CommitLineData
1da177e4
LT		 1#undef BLOCKMOVE
2#define Z_WAKE
3#undef Z_EXT_CHARS_IN_BUFFER
1da177e4
LT		 4
5/*
1da177e4
LT		 6 * This file contains the driver for the Cyclades async multiport
7 * serial boards.
8 *
9 * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
10 * Modified and maintained by Marcio Saito <marcio@cyclades.com>.
1da177e4 11 *
ebdb5135 12 * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com>
1da177e4
LT		 13 *
14 * Much of the design and some of the code came from serial.c
15 * which was copyright (C) 1991, 1992 Linus Torvalds. It was
16 * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92,
17 * and then fixed as suggested by Michael K. Johnson 12/12/92.
c8e1693a 18 * Converted to pci probing and cleaned up by Jiri Slaby.
1da177e4 19 *
1da177e4
LT		 20 */
21
ebdb5135 22#define CY_VERSION "2.6"
096dcfce 23
1da177e4
LT		 24/* If you need to install more boards than NR_CARDS, change the constant
25 in the definition below. No other change is necessary to support up to
26 eight boards. Beyond that you'll have to extend cy_isa_addresses. */
27
02f1175c 28#define NR_CARDS 4
1da177e4
LT		 29
30/*
31 If the total number of ports is larger than NR_PORTS, change this
32 constant in the definition below. No other change is necessary to
33 support more boards/ports. */
34
02f1175c 35#define NR_PORTS 256
1da177e4 36
1da177e4
LT		 37#define ZO_V1 0
38#define ZO_V2 1
39#define ZE_V1 2
40
41#define SERIAL_PARANOIA_CHECK
42#undef CY_DEBUG_OPEN
43#undef CY_DEBUG_THROTTLE
44#undef CY_DEBUG_OTHER
45#undef CY_DEBUG_IO
46#undef CY_DEBUG_COUNT
47#undef CY_DEBUG_DTR
1da177e4
LT		 48#undef CY_DEBUG_INTERRUPTS
49#undef CY_16Y_HACK
50#undef CY_ENABLE_MONITORING
51#undef CY_PCI_DEBUG
52
1da177e4 53/*
15ed6cc0 54 * Include section
1da177e4 55 */
1da177e4
LT		 56#include <linux/module.h>
57#include <linux/errno.h>
58#include <linux/signal.h>
59#include <linux/sched.h>
60#include <linux/timer.h>
61#include <linux/interrupt.h>
62#include <linux/tty.h>
33f0f88f 63#include <linux/tty_flip.h>
1da177e4
LT		 64#include <linux/serial.h>
65#include <linux/major.h>
66#include <linux/string.h>
67#include <linux/fcntl.h>
68#include <linux/ptrace.h>
69#include <linux/cyclades.h>
70#include <linux/mm.h>
71#include <linux/ioport.h>
72#include <linux/init.h>
73#include <linux/delay.h>
74#include <linux/spinlock.h>
75#include <linux/bitops.h>
054f5b0a 76#include <linux/firmware.h>
9f56fad7 77#include <linux/device.h>
5a0e3ad6 78#include <linux/slab.h>
1da177e4 79
15ed6cc0 80#include <linux/io.h>
15ed6cc0 81#include <linux/uaccess.h>
1da177e4 82
1da177e4
LT		 83#include <linux/kernel.h>
84#include <linux/pci.h>
85
86#include <linux/stat.h>
87#include <linux/proc_fs.h>
444697d6 88#include <linux/seq_file.h>
1da177e4 89
02f1175c 90static void cy_send_xchar(struct tty_struct *tty, char ch);
1da177e4 91
1da177e4
LT		 92#ifndef SERIAL_XMIT_SIZE
93#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
94#endif
1da177e4
LT		 95
96#define STD_COM_FLAGS (0)
97
054f5b0a
JS		 98/* firmware stuff */
99#define ZL_MAX_BLOCKS 16
100#define DRIVER_VERSION 0x02010203
101#define RAM_SIZE 0x80000
102
054f5b0a
JS		 103enum zblock_type {
104 ZBLOCK_PRG = 0,
105 ZBLOCK_FPGA = 1
106};
107
108struct zfile_header {
109 char name[64];
110 char date[32];
111 char aux[32];
112 u32 n_config;
113 u32 config_offset;
114 u32 n_blocks;
115 u32 block_offset;
116 u32 reserved[9];
117} __attribute__ ((packed));
118
119struct zfile_config {
120 char name[64];
121 u32 mailbox;
122 u32 function;
123 u32 n_blocks;
124 u32 block_list[ZL_MAX_BLOCKS];
125} __attribute__ ((packed));
126
127struct zfile_block {
128 u32 type;
129 u32 file_offset;
130 u32 ram_offset;
131 u32 size;
132} __attribute__ ((packed));
133
1da177e4
LT		 134static struct tty_driver *cy_serial_driver;
135
136#ifdef CONFIG_ISA
137/* This is the address lookup table. The driver will probe for
138 Cyclom-Y/ISA boards at all addresses in here. If you want the
139 driver to probe addresses at a different address, add it to
140 this table. If the driver is probing some other board and
141 causing problems, remove the offending address from this table.
1da177e4
LT		 142*/
143
144static unsigned int cy_isa_addresses[] = {
02f1175c
JS		 145 0xD0000,
146 0xD2000,
147 0xD4000,
148 0xD6000,
149 0xD8000,
150 0xDA000,
151 0xDC000,
152 0xDE000,
153 0, 0, 0, 0, 0, 0, 0, 0
1da177e4 154};
02f1175c 155
fe971071 156#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
1da177e4 157
3046d50e
JS		 158static long maddr[NR_CARDS];
159static int irq[NR_CARDS];
1da177e4
LT		 160
161module_param_array(maddr, long, NULL, 0);
162module_param_array(irq, int, NULL, 0);
1da177e4 163
02f1175c 164#endif /* CONFIG_ISA */
1da177e4
LT		 165
166/* This is the per-card data structure containing address, irq, number of
167 channels, etc. This driver supports a maximum of NR_CARDS cards.
168*/
169static struct cyclades_card cy_card[NR_CARDS];
170
02f1175c 171static int cy_next_channel; /* next minor available */
1da177e4 172
1da177e4
LT		 173/*
174 * This is used to look up the divisor speeds and the timeouts
175 * We're normally limited to 15 distinct baud rates. The extra
77451e53 176 * are accessed via settings in info->port.flags.
1da177e4
LT		 177 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
178 * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
179 * HI VHI
180 * 20
181 */
ebdb5135 182static const int baud_table[] = {
02f1175c
JS		 183 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
184 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
185 230400, 0
186};
187
ebdb5135 188static const char baud_co_25[] = { /* 25 MHz clock option table */
02f1175c
JS		 189 /* value => 00 01 02 03 04 */
190 /* divide by 8 32 128 512 2048 */
191 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
192 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
193};
194
ebdb5135 195static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */
02f1175c
JS		 196 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
197 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
198};
199
ebdb5135 200static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
02f1175c
JS		 201 /* value => 00 01 02 03 04 */
202 /* divide by 8 32 128 512 2048 */
203 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
204 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
205 0x00
206};
207
ebdb5135 208static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
02f1175c
JS		 209 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
210 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
211 0x21
212};
213
ebdb5135 214static const char baud_cor3[] = { /* receive threshold */
02f1175c
JS		 215 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
216 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
217 0x07
218};
1da177e4
LT		 219
220/*
221 * The Cyclades driver implements HW flow control as any serial driver.
15ed6cc0
AC		 222 * The cyclades_port structure member rflow and the vector rflow_thr
223 * allows us to take advantage of a special feature in the CD1400 to avoid
224 * data loss even when the system interrupt latency is too high. These flags
225 * are to be used only with very special applications. Setting these flags
226 * requires the use of a special cable (DTR and RTS reversed). In the new
227 * CD1400-based boards (rev. 6.00 or later), there is no need for special
1da177e4
LT		 228 * cables.
229 */
230
ebdb5135 231static const char rflow_thr[] = { /* rflow threshold */
02f1175c
JS		 232 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
233 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
234 0x0a
235};
1da177e4
LT		 236
237/* The Cyclom-Ye has placed the sequential chips in non-sequential
238 * address order. This look-up table overcomes that problem.
239 */
f0eefdc3 240static const unsigned int cy_chip_offset[] = { 0x0000,
02f1175c
JS		 241 0x0400,
242 0x0800,
243 0x0C00,
244 0x0200,
245 0x0600,
246 0x0A00,
247 0x0E00
248};
1da177e4
LT		 249
250/* PCI related definitions */
251
1da177e4 252#ifdef CONFIG_PCI
ebdb5135 253static const struct pci_device_id cy_pci_dev_id[] = {
15ed6cc0
AC		 254 /* PCI < 1Mb */
255 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
256 /* PCI > 1Mb */
257 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) },
258 /* 4Y PCI < 1Mb */
259 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) },
260 /* 4Y PCI > 1Mb */
261 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) },
262 /* 8Y PCI < 1Mb */
263 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) },
264 /* 8Y PCI > 1Mb */
265 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) },
266 /* Z PCI < 1Mb */
267 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) },
268 /* Z PCI > 1Mb */
269 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) },
893de2df 270 { } /* end of table */
02f1175c 271};
893de2df 272MODULE_DEVICE_TABLE(pci, cy_pci_dev_id);
1da177e4
LT		 273#endif
274
275static void cy_start(struct tty_struct *);
d13549f8 276static void cy_set_line_char(struct cyclades_port *, struct tty_struct *);
1a86b5e3 277static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32);
1da177e4
LT		 278#ifdef CONFIG_ISA
279static unsigned detect_isa_irq(void __iomem *);
02f1175c 280#endif /* CONFIG_ISA */
1da177e4 281
1da177e4
LT		 282#ifndef CONFIG_CYZ_INTR
283static void cyz_poll(unsigned long);
284
285/* The Cyclades-Z polling cycle is defined by this variable */
286static long cyz_polling_cycle = CZ_DEF_POLL;
287
8d06afab 288static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0);
1da177e4 289
02f1175c 290#else /* CONFIG_CYZ_INTR */
1da177e4
LT		 291static void cyz_rx_restart(unsigned long);
292static struct timer_list cyz_rx_full_timer[NR_PORTS];
02f1175c 293#endif /* CONFIG_CYZ_INTR */
1da177e4 294
f25d596f 295static void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
3aeea5b9
JS		 296{
297 struct cyclades_card *card = port->card;
298
299 cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
300}
301
f88d8683 302static u8 cyy_readb(struct cyclades_port *port, u32 reg)
3aeea5b9
JS		 303{
304 struct cyclades_card *card = port->card;
305
306 return readb(port->u.cyy.base_addr + (reg << card->bus_index));
307}
308
2693f485
JS		 309static inline bool cy_is_Z(struct cyclades_card *card)
310{
311 return card->num_chips == (unsigned int)-1;
312}
313
314static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr)
315{
316 return readl(&ctl_addr->init_ctrl) & (1 << 17);
317}
318
319static inline bool cyz_fpga_loaded(struct cyclades_card *card)
320{
321 return __cyz_fpga_loaded(card->ctl_addr.p9060);
322}
323
1c82363e 324static bool cyz_is_loaded(struct cyclades_card *card)
2693f485
JS		 325{
326 struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS;
327
328 return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) &&
329 readl(&fw_id->signature) == ZFIRM_ID;
330}
331
8c6ba003 332static int serial_paranoia_check(struct cyclades_port *info,
ebdb5135 333 const char *name, const char *routine)
1da177e4
LT		 334{
335#ifdef SERIAL_PARANOIA_CHECK
02f1175c 336 if (!info) {
21719191
JS		 337 printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) "
338 "in %s\n", name, routine);
02f1175c
JS		 339 return 1;
340 }
341
02f1175c 342 if (info->magic != CYCLADES_MAGIC) {
21719191
JS		 343 printk(KERN_WARNING "cyc Warning: bad magic number for serial "
344 "struct (%s) in %s\n", name, routine);
02f1175c
JS		 345 return 1;
346 }
1da177e4 347#endif
02f1175c 348 return 0;
ebdb5135 349}
1da177e4 350
1da177e4
LT		 351/***********************************************************/
352/********* Start of block of Cyclom-Y specific code ********/
353
354/* This routine waits up to 1000 micro-seconds for the previous
355 command to the Cirrus chip to complete and then issues the
356 new command. An error is returned if the previous command
357 didn't finish within the time limit.
358
359 This function is only called from inside spinlock-protected code.
360 */
3aeea5b9 361static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index)
1da177e4 362{
3aeea5b9 363 void __iomem *ccr = base_addr + (CyCCR << index);
ad39c300 364 unsigned int i;
1da177e4 365
02f1175c
JS		 366 /* Check to see that the previous command has completed */
367 for (i = 0; i < 100; i++) {
3aeea5b9 368 if (readb(ccr) == 0)
02f1175c 369 break;
02f1175c 370 udelay(10L);
1da177e4 371 }
02f1175c
JS		 372 /* if the CCR never cleared, the previous command
373 didn't finish within the "reasonable time" */
374 if (i == 100)
096dcfce 375 return -1;
1da177e4 376
02f1175c 377 /* Issue the new command */
3aeea5b9 378 cy_writeb(ccr, cmd);
1da177e4 379
096dcfce 380 return 0;
3aeea5b9
JS		 381}
382
383static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd)
384{
385 return __cyy_issue_cmd(port->u.cyy.base_addr, cmd,
386 port->card->bus_index);
387}
1da177e4
LT		 388
389#ifdef CONFIG_ISA
390/* ISA interrupt detection code */
15ed6cc0 391static unsigned detect_isa_irq(void __iomem *address)
1da177e4 392{
02f1175c
JS		 393 int irq;
394 unsigned long irqs, flags;
395 int save_xir, save_car;
396 int index = 0; /* IRQ probing is only for ISA */
397
398 /* forget possible initially masked and pending IRQ */
399 irq = probe_irq_off(probe_irq_on());
400
401 /* Clear interrupts on the board first */
402 cy_writeb(address + (Cy_ClrIntr << index), 0);
403 /* Cy_ClrIntr is 0x1800 */
404
405 irqs = probe_irq_on();
406 /* Wait ... */
f6e208c1 407 msleep(5);
02f1175c
JS		 408
409 /* Enable the Tx interrupts on the CD1400 */
410 local_irq_save(flags);
411 cy_writeb(address + (CyCAR << index), 0);
3aeea5b9 412 __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);
02f1175c
JS		 413
414 cy_writeb(address + (CyCAR << index), 0);
415 cy_writeb(address + (CySRER << index),
db05c3b1 416 readb(address + (CySRER << index)) | CyTxRdy);
02f1175c
JS		 417 local_irq_restore(flags);
418
419 /* Wait ... */
f6e208c1 420 msleep(5);
02f1175c
JS		 421
422 /* Check which interrupt is in use */
423 irq = probe_irq_off(irqs);
424
425 /* Clean up */
db05c3b1
JS		 426 save_xir = (u_char) readb(address + (CyTIR << index));
427 save_car = readb(address + (CyCAR << index));
02f1175c
JS		 428 cy_writeb(address + (CyCAR << index), (save_xir & 0x3));
429 cy_writeb(address + (CySRER << index),
db05c3b1 430 readb(address + (CySRER << index)) & ~CyTxRdy);
02f1175c
JS		 431 cy_writeb(address + (CyTIR << index), (save_xir & 0x3f));
432 cy_writeb(address + (CyCAR << index), (save_car));
433 cy_writeb(address + (Cy_ClrIntr << index), 0);
434 /* Cy_ClrIntr is 0x1800 */
435
436 return (irq > 0) ? irq : 0;
1da177e4 437}
02f1175c 438#endif /* CONFIG_ISA */
1da177e4 439
ce97a097
JS		 440static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
441 void __iomem *base_addr)
e941027f
JS		 442{
443 struct cyclades_port *info;
227434f8 444 struct tty_port *port;
65f76a82 445 int len, index = cinfo->bus_index;
3aeea5b9 446 u8 ivr, save_xir, channel, save_car, data, char_count;
e941027f 447
e941027f 448#ifdef CY_DEBUG_INTERRUPTS
ce97a097 449 printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
e941027f 450#endif
ce97a097 451 /* determine the channel & change to that context */
65f76a82
JS		 452 save_xir = readb(base_addr + (CyRIR << index));
453 channel = save_xir & CyIRChannel;
ce97a097 454 info = &cinfo->ports[channel + chip * 4];
227434f8 455 port = &info->port;
3aeea5b9
JS		 456 save_car = cyy_readb(info, CyCAR);
457 cyy_writeb(info, CyCAR, save_xir);
458 ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
ce97a097 459
ce97a097 460 /* there is an open port for this data */
3aeea5b9
JS		 461 if (ivr == CyIVRRxEx) { /* exception */
462 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 463
464 /* For statistics only */
465 if (data & CyBREAK)
466 info->icount.brk++;
467 else if (data & CyFRAME)
468 info->icount.frame++;
469 else if (data & CyPARITY)
470 info->icount.parity++;
471 else if (data & CyOVERRUN)
472 info->icount.overrun++;
473
474 if (data & info->ignore_status_mask) {
475 info->icount.rx++;
ce97a097
JS		 476 return;
477 }
227434f8 478 if (tty_buffer_request_room(port, 1)) {
ce97a097
JS		 479 if (data & info->read_status_mask) {
480 if (data & CyBREAK) {
92a19f9c 481 tty_insert_flip_char(port,
3aeea5b9
JS		 482 cyy_readb(info, CyRDSR),
483 TTY_BREAK);
ce97a097 484 info->icount.rx++;
6732c8bb
JS		 485 if (port->flags & ASYNC_SAK) {
486 struct tty_struct *tty =
487 tty_port_tty_get(port);
488 if (tty) {
489 do_SAK(tty);
490 tty_kref_put(tty);
491 }
492 }
ce97a097 493 } else if (data & CyFRAME) {
92a19f9c 494 tty_insert_flip_char(port,
3aeea5b9
JS		 495 cyy_readb(info, CyRDSR),
496 TTY_FRAME);
ce97a097
JS		 497 info->icount.rx++;
498 info->idle_stats.frame_errs++;
499 } else if (data & CyPARITY) {
500 /* Pieces of seven... */
92a19f9c 501 tty_insert_flip_char(port,
3aeea5b9
JS		 502 cyy_readb(info, CyRDSR),
503 TTY_PARITY);
ce97a097
JS		 504 info->icount.rx++;
505 info->idle_stats.parity_errs++;
506 } else if (data & CyOVERRUN) {
92a19f9c 507 tty_insert_flip_char(port, 0,
ce97a097
JS		 508 TTY_OVERRUN);
509 info->icount.rx++;
510 /* If the flip buffer itself is
511 overflowing, we still lose
512 the next incoming character.
513 */
92a19f9c 514 tty_insert_flip_char(port,
3aeea5b9
JS		 515 cyy_readb(info, CyRDSR),
516 TTY_FRAME);
02f1175c 517 info->icount.rx++;
02f1175c 518 info->idle_stats.overruns++;
ce97a097
JS		 519 /* These two conditions may imply */
520 /* a normal read should be done. */
521 /* } else if(data & CyTIMEOUT) { */
522 /* } else if(data & CySPECHAR) { */
523 } else {
92a19f9c 524 tty_insert_flip_char(port, 0,
ce97a097
JS		 525 TTY_NORMAL);
526 info->icount.rx++;
02f1175c 527 }
ce97a097 528 } else {
92a19f9c 529 tty_insert_flip_char(port, 0, TTY_NORMAL);
ce97a097
JS		 530 info->icount.rx++;
531 }
532 } else {
533 /* there was a software buffer overrun and nothing
534 * could be done about it!!! */
535 info->icount.buf_overrun++;
536 info->idle_stats.overruns++;
537 }
538 } else { /* normal character reception */
539 /* load # chars available from the chip */
3aeea5b9 540 char_count = cyy_readb(info, CyRDCR);
e941027f
JS		 541
542#ifdef CY_ENABLE_MONITORING
ce97a097
JS		 543 ++info->mon.int_count;
544 info->mon.char_count += char_count;
545 if (char_count > info->mon.char_max)
546 info->mon.char_max = char_count;
547 info->mon.char_last = char_count;
e941027f 548#endif
227434f8 549 len = tty_buffer_request_room(port, char_count);
ce97a097 550 while (len--) {
3aeea5b9 551 data = cyy_readb(info, CyRDSR);
92a19f9c 552 tty_insert_flip_char(port, data, TTY_NORMAL);
ce97a097
JS		 553 info->idle_stats.recv_bytes++;
554 info->icount.rx++;
e941027f 555#ifdef CY_16Y_HACK
ce97a097 556 udelay(10L);
e941027f 557#endif
e941027f 558 }
ce97a097 559 info->idle_stats.recv_idle = jiffies;
e941027f 560 }
6732c8bb
JS		 561 tty_schedule_flip(port);
562
ce97a097 563 /* end of service */
3aeea5b9
JS		 564 cyy_writeb(info, CyRIR, save_xir & 0x3f);
565 cyy_writeb(info, CyCAR, save_car);
ce97a097 566}
e941027f 567
65f76a82 568static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
ce97a097
JS		 569 void __iomem *base_addr)
570{
571 struct cyclades_port *info;
d13549f8 572 struct tty_struct *tty;
65f76a82
JS		 573 int char_count, index = cinfo->bus_index;
574 u8 save_xir, channel, save_car, outch;
ce97a097
JS		 575
576 /* Since we only get here when the transmit buffer
577 is empty, we know we can always stuff a dozen
578 characters. */
e941027f 579#ifdef CY_DEBUG_INTERRUPTS
ce97a097 580 printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip);
e941027f
JS		 581#endif
582
ce97a097 583 /* determine the channel & change to that context */
65f76a82
JS		 584 save_xir = readb(base_addr + (CyTIR << index));
585 channel = save_xir & CyIRChannel;
ce97a097
JS		 586 save_car = readb(base_addr + (CyCAR << index));
587 cy_writeb(base_addr + (CyCAR << index), save_xir);
588
ce97a097 589 info = &cinfo->ports[channel + chip * 4];
d13549f8
JS		 590 tty = tty_port_tty_get(&info->port);
591 if (tty == NULL) {
3aeea5b9 592 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 593 goto end;
594 }
02f1175c 595
ce97a097
JS		 596 /* load the on-chip space for outbound data */
597 char_count = info->xmit_fifo_size;
02f1175c 598
ce97a097
JS		 599 if (info->x_char) { /* send special char */
600 outch = info->x_char;
3aeea5b9 601 cyy_writeb(info, CyTDR, outch);
ce97a097
JS		 602 char_count--;
603 info->icount.tx++;
604 info->x_char = 0;
605 }
02f1175c 606
ce97a097
JS		 607 if (info->breakon || info->breakoff) {
608 if (info->breakon) {
3aeea5b9
JS		 609 cyy_writeb(info, CyTDR, 0);
610 cyy_writeb(info, CyTDR, 0x81);
ce97a097
JS		 611 info->breakon = 0;
612 char_count -= 2;
e941027f 613 }
ce97a097 614 if (info->breakoff) {
3aeea5b9
JS		 615 cyy_writeb(info, CyTDR, 0);
616 cyy_writeb(info, CyTDR, 0x83);
ce97a097
JS		 617 info->breakoff = 0;
618 char_count -= 2;
e941027f 619 }
ce97a097 620 }
02f1175c 621
ce97a097
JS		 622 while (char_count-- > 0) {
623 if (!info->xmit_cnt) {
3aeea5b9
JS		 624 if (cyy_readb(info, CySRER) & CyTxMpty) {
625 cyy_writeb(info, CySRER,
626 cyy_readb(info, CySRER) & ~CyTxMpty);
ce97a097 627 } else {
3aeea5b9
JS		 628 cyy_writeb(info, CySRER, CyTxMpty |
629 (cyy_readb(info, CySRER) & ~CyTxRdy));
02f1175c 630 }
ce97a097
JS		 631 goto done;
632 }
77451e53 633 if (info->port.xmit_buf == NULL) {
3aeea5b9
JS		 634 cyy_writeb(info, CySRER,
635 cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 636 goto done;
637 }
d13549f8 638 if (tty->stopped || tty->hw_stopped) {
3aeea5b9
JS		 639 cyy_writeb(info, CySRER,
640 cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 641 goto done;
642 }
643 /* Because the Embedded Transmit Commands have been enabled,
644 * we must check to see if the escape character, NULL, is being
645 * sent. If it is, we must ensure that there is room for it to
646 * be doubled in the output stream. Therefore we no longer
647 * advance the pointer when the character is fetched, but
648 * rather wait until after the check for a NULL output
649 * character. This is necessary because there may not be room
650 * for the two chars needed to send a NULL.)
651 */
77451e53 652 outch = info->port.xmit_buf[info->xmit_tail];
ce97a097
JS		 653 if (outch) {
654 info->xmit_cnt--;
655 info->xmit_tail = (info->xmit_tail + 1) &
656 (SERIAL_XMIT_SIZE - 1);
3aeea5b9 657 cyy_writeb(info, CyTDR, outch);
ce97a097
JS		 658 info->icount.tx++;
659 } else {
660 if (char_count > 1) {
02f1175c
JS		 661 info->xmit_cnt--;
662 info->xmit_tail = (info->xmit_tail + 1) &
ce97a097 663 (SERIAL_XMIT_SIZE - 1);
3aeea5b9
JS		 664 cyy_writeb(info, CyTDR, outch);
665 cyy_writeb(info, CyTDR, 0);
02f1175c 666 info->icount.tx++;
ce97a097 667 char_count--;
02f1175c 668 }
e941027f 669 }
e941027f
JS		 670 }
671
ce97a097 672done:
d13549f8
JS		 673 tty_wakeup(tty);
674 tty_kref_put(tty);
ce97a097
JS		 675end:
676 /* end of service */
3aeea5b9
JS		 677 cyy_writeb(info, CyTIR, save_xir & 0x3f);
678 cyy_writeb(info, CyCAR, save_car);
ce97a097 679}
02f1175c 680
ce97a097
JS		 681static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
682 void __iomem *base_addr)
683{
684 struct cyclades_port *info;
d13549f8 685 struct tty_struct *tty;
65f76a82
JS		 686 int index = cinfo->bus_index;
687 u8 save_xir, channel, save_car, mdm_change, mdm_status;
ce97a097
JS		 688
689 /* determine the channel & change to that context */
65f76a82
JS		 690 save_xir = readb(base_addr + (CyMIR << index));
691 channel = save_xir & CyIRChannel;
ce97a097 692 info = &cinfo->ports[channel + chip * 4];
3aeea5b9
JS		 693 save_car = cyy_readb(info, CyCAR);
694 cyy_writeb(info, CyCAR, save_xir);
ce97a097 695
3aeea5b9
JS		 696 mdm_change = cyy_readb(info, CyMISR);
697 mdm_status = cyy_readb(info, CyMSVR1);
ce97a097 698
d13549f8
JS		 699 tty = tty_port_tty_get(&info->port);
700 if (!tty)
ce97a097
JS		 701 goto end;
702
703 if (mdm_change & CyANY_DELTA) {
704 /* For statistics only */
705 if (mdm_change & CyDCD)
706 info->icount.dcd++;
707 if (mdm_change & CyCTS)
708 info->icount.cts++;
709 if (mdm_change & CyDSR)
710 info->icount.dsr++;
711 if (mdm_change & CyRI)
712 info->icount.rng++;
713
bdc04e31 714 wake_up_interruptible(&info->port.delta_msr_wait);
ce97a097
JS		 715 }
716
77451e53 717 if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) {
174e6fe0
JS		 718 if (mdm_status & CyDCD)
719 wake_up_interruptible(&info->port.open_wait);
720 else
d13549f8 721 tty_hangup(tty);
ce97a097 722 }
f21ec3d2 723 if ((mdm_change & CyCTS) && tty_port_cts_enabled(&info->port)) {
d13549f8 724 if (tty->hw_stopped) {
ce97a097
JS		 725 if (mdm_status & CyCTS) {
726 /* cy_start isn't used
727 because... !!! */
d13549f8 728 tty->hw_stopped = 0;
3aeea5b9
JS		 729 cyy_writeb(info, CySRER,
730 cyy_readb(info, CySRER) | CyTxRdy);
d13549f8 731 tty_wakeup(tty);
02f1175c 732 }
ce97a097
JS		 733 } else {
734 if (!(mdm_status & CyCTS)) {
735 /* cy_stop isn't used
736 because ... !!! */
d13549f8 737 tty->hw_stopped = 1;
3aeea5b9
JS		 738 cyy_writeb(info, CySRER,
739 cyy_readb(info, CySRER) & ~CyTxRdy);
02f1175c 740 }
e941027f 741 }
e941027f 742 }
ce97a097
JS		 743/* if (mdm_change & CyDSR) {
744 }
745 if (mdm_change & CyRI) {
746 }*/
d13549f8 747 tty_kref_put(tty);
ce97a097
JS		 748end:
749 /* end of service */
3aeea5b9
JS		 750 cyy_writeb(info, CyMIR, save_xir & 0x3f);
751 cyy_writeb(info, CyCAR, save_car);
e941027f
JS		 752}
753
1da177e4
LT		 754/* The real interrupt service routine is called
755 whenever the card wants its hand held--chars
756 received, out buffer empty, modem change, etc.
757 */
02f1175c 758static irqreturn_t cyy_interrupt(int irq, void *dev_id)
1da177e4 759{
02f1175c 760 int status;
f7429034 761 struct cyclades_card *cinfo = dev_id;
02f1175c 762 void __iomem *base_addr, *card_base_addr;
65f76a82 763 unsigned int chip, too_many, had_work;
02f1175c 764 int index;
02f1175c 765
f7429034 766 if (unlikely(cinfo == NULL)) {
1da177e4 767#ifdef CY_DEBUG_INTERRUPTS
15ed6cc0
AC		 768 printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",
769 irq);
1da177e4 770#endif
02f1175c
JS		 771 return IRQ_NONE; /* spurious interrupt */
772 }
773
774 card_base_addr = cinfo->base_addr;
775 index = cinfo->bus_index;
776
f1e83c6c
JS		 777 /* card was not initialized yet (e.g. DEBUG_SHIRQ) */
778 if (unlikely(card_base_addr == NULL))
779 return IRQ_HANDLED;
780
02f1175c
JS		 781 /* This loop checks all chips in the card. Make a note whenever
782 _any_ chip had some work to do, as this is considered an
783 indication that there will be more to do. Only when no chip
784 has any work does this outermost loop exit.
785 */
786 do {
787 had_work = 0;
788 for (chip = 0; chip < cinfo->num_chips; chip++) {
789 base_addr = cinfo->base_addr +
790 (cy_chip_offset[chip] << index);
791 too_many = 0;
db05c3b1 792 while ((status = readb(base_addr +
02f1175c
JS		 793 (CySVRR << index))) != 0x00) {
794 had_work++;
795 /* The purpose of the following test is to ensure that
796 no chip can monopolize the driver. This forces the
797 chips to be checked in a round-robin fashion (after
798 draining each of a bunch (1000) of characters).
799 */
ce97a097 800 if (1000 < too_many++)
02f1175c 801 break;
1c0a387c 802 spin_lock(&cinfo->card_lock);
ce97a097
JS		 803 if (status & CySRReceive) /* rx intr */
804 cyy_chip_rx(cinfo, chip, base_addr);
805 if (status & CySRTransmit) /* tx intr */
806 cyy_chip_tx(cinfo, chip, base_addr);
807 if (status & CySRModem) /* modem intr */
808 cyy_chip_modem(cinfo, chip, base_addr);
1c0a387c 809 spin_unlock(&cinfo->card_lock);
02f1175c
JS		 810 }
811 }
812 } while (had_work);
813
814 /* clear interrupts */
815 spin_lock(&cinfo->card_lock);
816 cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0);
817 /* Cy_ClrIntr is 0x1800 */
818 spin_unlock(&cinfo->card_lock);
819 return IRQ_HANDLED;
820} /* cyy_interrupt */
1da177e4 821
4d768200
JS		 822static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set,
823 unsigned int clear)
824{
825 struct cyclades_card *card = info->card;
3aeea5b9 826 int channel = info->line - card->first_line;
0d348729 827 u32 rts, dtr, msvrr, msvrd;
4d768200 828
4d768200 829 channel &= 0x03;
4d768200 830
0d348729
JS		 831 if (info->rtsdtr_inv) {
832 msvrr = CyMSVR2;
833 msvrd = CyMSVR1;
834 rts = CyDTR;
835 dtr = CyRTS;
836 } else {
837 msvrr = CyMSVR1;
838 msvrd = CyMSVR2;
839 rts = CyRTS;
840 dtr = CyDTR;
841 }
4d768200 842 if (set & TIOCM_RTS) {
3aeea5b9
JS		 843 cyy_writeb(info, CyCAR, channel);
844 cyy_writeb(info, msvrr, rts);
4d768200
JS		 845 }
846 if (clear & TIOCM_RTS) {
3aeea5b9
JS		 847 cyy_writeb(info, CyCAR, channel);
848 cyy_writeb(info, msvrr, ~rts);
4d768200
JS		 849 }
850 if (set & TIOCM_DTR) {
3aeea5b9
JS		 851 cyy_writeb(info, CyCAR, channel);
852 cyy_writeb(info, msvrd, dtr);
4d768200
JS		 853#ifdef CY_DEBUG_DTR
854 printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
855 printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
3aeea5b9
JS		 856 cyy_readb(info, CyMSVR1),
857 cyy_readb(info, CyMSVR2));
4d768200
JS		 858#endif
859 }
860 if (clear & TIOCM_DTR) {
3aeea5b9
JS		 861 cyy_writeb(info, CyCAR, channel);
862 cyy_writeb(info, msvrd, ~dtr);
4d768200
JS		 863#ifdef CY_DEBUG_DTR
864 printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
865 printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
3aeea5b9
JS		 866 cyy_readb(info, CyMSVR1),
867 cyy_readb(info, CyMSVR2));
4d768200
JS		 868#endif
869 }
870}
871
1da177e4
LT		 872/***********************************************************/
873/********* End of block of Cyclom-Y specific code **********/
15ed6cc0 874/******** Start of block of Cyclades-Z specific code *******/
1da177e4
LT		 875/***********************************************************/
876
877static int
02f1175c 878cyz_fetch_msg(struct cyclades_card *cinfo,
15ed6cc0 879 __u32 *channel, __u8 *cmd, __u32 *param)
1da177e4 880{
f0eefdc3 881 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
02f1175c
JS		 882 unsigned long loc_doorbell;
883
97e87f8e 884 loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell);
02f1175c
JS		 885 if (loc_doorbell) {
886 *cmd = (char)(0xff & loc_doorbell);
db05c3b1
JS		 887 *channel = readl(&board_ctrl->fwcmd_channel);
888 *param = (__u32) readl(&board_ctrl->fwcmd_param);
97e87f8e 889 cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff);
02f1175c
JS		 890 return 1;
891 }
892 return 0;
893} /* cyz_fetch_msg */
1da177e4
LT		 894
895static int
02f1175c 896cyz_issue_cmd(struct cyclades_card *cinfo,
1a86b5e3 897 __u32 channel, __u8 cmd, __u32 param)
1da177e4 898{
f0eefdc3 899 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
1a86b5e3 900 __u32 __iomem *pci_doorbell;
65f76a82 901 unsigned int index;
02f1175c 902
2693f485 903 if (!cyz_is_loaded(cinfo))
096dcfce 904 return -1;
15ed6cc0 905
02f1175c 906 index = 0;
97e87f8e 907 pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell;
db05c3b1 908 while ((readl(pci_doorbell) & 0xff) != 0) {
15ed6cc0 909 if (index++ == 1000)
db05c3b1 910 return (int)(readl(pci_doorbell) & 0xff);
02f1175c
JS		 911 udelay(50L);
912 }
913 cy_writel(&board_ctrl->hcmd_channel, channel);
914 cy_writel(&board_ctrl->hcmd_param, param);
915 cy_writel(pci_doorbell, (long)cmd);
916
096dcfce 917 return 0;
02f1175c 918} /* cyz_issue_cmd */
1da177e4 919
dabe2c13 920static void cyz_handle_rx(struct cyclades_port *info)
1da177e4 921{
f0eefdc3 922 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
875b206b 923 struct cyclades_card *cinfo = info->card;
227434f8 924 struct tty_port *port = &info->port;
65f76a82 925 unsigned int char_count;
02f1175c 926 int len;
1da177e4 927#ifdef BLOCKMOVE
ce71b0ff 928 unsigned char *buf;
1da177e4 929#else
02f1175c 930 char data;
1da177e4 931#endif
ad39c300 932 __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;
1da177e4 933
db05c3b1
JS		 934 rx_get = new_rx_get = readl(&buf_ctrl->rx_get);
935 rx_put = readl(&buf_ctrl->rx_put);
936 rx_bufsize = readl(&buf_ctrl->rx_bufsize);
937 rx_bufaddr = readl(&buf_ctrl->rx_bufaddr);
02f1175c
JS		 938 if (rx_put >= rx_get)
939 char_count = rx_put - rx_get;
940 else
941 char_count = rx_put - rx_get + rx_bufsize;
1da177e4 942
dabe2c13
JS		 943 if (!char_count)
944 return;
945
1da177e4 946#ifdef CY_ENABLE_MONITORING
dabe2c13
JS		 947 info->mon.int_count++;
948 info->mon.char_count += char_count;
949 if (char_count > info->mon.char_max)
950 info->mon.char_max = char_count;
951 info->mon.char_last = char_count;
1da177e4 952#endif
dabe2c13 953
1da177e4 954#ifdef BLOCKMOVE
dabe2c13
JS		 955 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
956 for performance, but because of buffer boundaries, there
957 may be several steps to the operation */
958 while (1) {
959 len = tty_prepare_flip_string(port, &buf,
960 char_count);
961 if (!len)
962 break;
ce71b0ff 963
dabe2c13
JS		 964 len = min_t(unsigned int, min(len, char_count),
965 rx_bufsize - new_rx_get);
ce71b0ff 966
dabe2c13
JS		 967 memcpy_fromio(buf, cinfo->base_addr +
968 rx_bufaddr + new_rx_get, len);
ce71b0ff 969
dabe2c13
JS		 970 new_rx_get = (new_rx_get + len) &
971 (rx_bufsize - 1);
972 char_count -= len;
973 info->icount.rx += len;
974 info->idle_stats.recv_bytes += len;
975 }
1da177e4 976#else
dabe2c13
JS		 977 len = tty_buffer_request_room(port, char_count);
978 while (len--) {
979 data = readb(cinfo->base_addr + rx_bufaddr +
980 new_rx_get);
981 new_rx_get = (new_rx_get + 1) &
982 (rx_bufsize - 1);
983 tty_insert_flip_char(port, data, TTY_NORMAL);
984 info->idle_stats.recv_bytes++;
985 info->icount.rx++;
986 }
1da177e4
LT		 987#endif
988#ifdef CONFIG_CYZ_INTR
dabe2c13
JS		 989 /* Recalculate the number of chars in the RX buffer and issue
990 a cmd in case it's higher than the RX high water mark */
991 rx_put = readl(&buf_ctrl->rx_put);
992 if (rx_put >= rx_get)
993 char_count = rx_put - rx_get;
994 else
995 char_count = rx_put - rx_get + rx_bufsize;
996 if (char_count >= readl(&buf_ctrl->rx_threshold) &&
997 !timer_pending(&cyz_rx_full_timer[
998 info->line]))
999 mod_timer(&cyz_rx_full_timer[info->line],
1000 jiffies + 1);
1da177e4 1001#endif
dabe2c13
JS		 1002 info->idle_stats.recv_idle = jiffies;
1003 tty_schedule_flip(&info->port);
1004
1005 /* Update rx_get */
1006 cy_writel(&buf_ctrl->rx_get, new_rx_get);
1da177e4
LT		 1007}
1008
dabe2c13 1009static void cyz_handle_tx(struct cyclades_port *info)
1da177e4 1010{
f0eefdc3 1011 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
875b206b 1012 struct cyclades_card *cinfo = info->card;
dabe2c13 1013 struct tty_struct *tty;
65f76a82
JS		 1014 u8 data;
1015 unsigned int char_count;
1da177e4 1016#ifdef BLOCKMOVE
02f1175c 1017 int small_count;
1da177e4 1018#endif
ad39c300 1019 __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr;
1da177e4 1020
02f1175c
JS		 1021 if (info->xmit_cnt <= 0) /* Nothing to transmit */
1022 return;
1da177e4 1023
db05c3b1
JS		 1024 tx_get = readl(&buf_ctrl->tx_get);
1025 tx_put = readl(&buf_ctrl->tx_put);
1026 tx_bufsize = readl(&buf_ctrl->tx_bufsize);
1027 tx_bufaddr = readl(&buf_ctrl->tx_bufaddr);
02f1175c
JS		 1028 if (tx_put >= tx_get)
1029 char_count = tx_get - tx_put - 1 + tx_bufsize;
1030 else
1031 char_count = tx_get - tx_put - 1;
1da177e4 1032
dabe2c13
JS		 1033 if (!char_count)
1034 return;
1035
1036 tty = tty_port_tty_get(&info->port);
1037 if (tty == NULL)
1038 goto ztxdone;
1da177e4 1039
dabe2c13
JS		 1040 if (info->x_char) { /* send special char */
1041 data = info->x_char;
1da177e4 1042
dabe2c13
JS		 1043 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1044 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1045 info->x_char = 0;
1046 char_count--;
1047 info->icount.tx++;
1048 }
1da177e4 1049#ifdef BLOCKMOVE
dabe2c13
JS		 1050 while (0 < (small_count = min_t(unsigned int,
1051 tx_bufsize - tx_put, min_t(unsigned int,
1052 (SERIAL_XMIT_SIZE - info->xmit_tail),
1053 min_t(unsigned int, info->xmit_cnt,
1054 char_count))))) {
1055
1056 memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr + tx_put),
1057 &info->port.xmit_buf[info->xmit_tail],
1058 small_count);
1059
1060 tx_put = (tx_put + small_count) & (tx_bufsize - 1);
1061 char_count -= small_count;
1062 info->icount.tx += small_count;
1063 info->xmit_cnt -= small_count;
1064 info->xmit_tail = (info->xmit_tail + small_count) &
1065 (SERIAL_XMIT_SIZE - 1);
1066 }
1da177e4 1067#else
dabe2c13
JS		 1068 while (info->xmit_cnt && char_count) {
1069 data = info->port.xmit_buf[info->xmit_tail];
1070 info->xmit_cnt--;
1071 info->xmit_tail = (info->xmit_tail + 1) &
1072 (SERIAL_XMIT_SIZE - 1);
1073
1074 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1075 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1076 char_count--;
1077 info->icount.tx++;
1078 }
1da177e4 1079#endif
dabe2c13
JS		 1080 tty_wakeup(tty);
1081 tty_kref_put(tty);
7fa57a0c 1082ztxdone:
dabe2c13
JS		 1083 /* Update tx_put */
1084 cy_writel(&buf_ctrl->tx_put, tx_put);
1da177e4
LT		 1085}
1086
02f1175c 1087static void cyz_handle_cmd(struct cyclades_card *cinfo)
1da177e4 1088{
f0eefdc3 1089 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
02f1175c 1090 struct cyclades_port *info;
101b8159 1091 __u32 channel, param, fw_ver;
1a86b5e3 1092 __u8 cmd;
02f1175c
JS		 1093 int special_count;
1094 int delta_count;
1095
db05c3b1 1096 fw_ver = readl(&board_ctrl->fw_version);
02f1175c
JS		 1097
1098 while (cyz_fetch_msg(cinfo, &channel, &cmd, &param) == 1) {
1099 special_count = 0;
1100 delta_count = 0;
dd025c0c 1101 info = &cinfo->ports[channel];
f7429034 1102
02f1175c
JS		 1103 switch (cmd) {
1104 case C_CM_PR_ERROR:
92a19f9c 1105 tty_insert_flip_char(&info->port, 0, TTY_PARITY);
02f1175c
JS		 1106 info->icount.rx++;
1107 special_count++;
1108 break;
1109 case C_CM_FR_ERROR:
92a19f9c 1110 tty_insert_flip_char(&info->port, 0, TTY_FRAME);
02f1175c
JS		 1111 info->icount.rx++;
1112 special_count++;
1113 break;
1114 case C_CM_RXBRK:
92a19f9c 1115 tty_insert_flip_char(&info->port, 0, TTY_BREAK);
02f1175c
JS		 1116 info->icount.rx++;
1117 special_count++;
1118 break;
1119 case C_CM_MDCD:
1120 info->icount.dcd++;
1121 delta_count++;
77451e53 1122 if (info->port.flags & ASYNC_CHECK_CD) {
f0eefdc3
JS		 1123 u32 dcd = fw_ver > 241 ? param :
1124 readl(&info->u.cyz.ch_ctrl->rs_status);
174e6fe0 1125 if (dcd & C_RS_DCD)
77451e53 1126 wake_up_interruptible(&info->port.open_wait);
aa27a094
JS		 1127 else
1128 tty_port_tty_hangup(&info->port, false);
02f1175c
JS		 1129 }
1130 break;
1131 case C_CM_MCTS:
1132 info->icount.cts++;
1133 delta_count++;
1134 break;
1135 case C_CM_MRI:
1136 info->icount.rng++;
1137 delta_count++;
1138 break;
1139 case C_CM_MDSR:
1140 info->icount.dsr++;
1141 delta_count++;
1142 break;
1da177e4 1143#ifdef Z_WAKE
02f1175c 1144 case C_CM_IOCTLW:
ebafeeff 1145 complete(&info->shutdown_wait);
02f1175c 1146 break;
1da177e4
LT		 1147#endif
1148#ifdef CONFIG_CYZ_INTR
02f1175c
JS		 1149 case C_CM_RXHIWM:
1150 case C_CM_RXNNDT:
1151 case C_CM_INTBACK2:
1152 /* Reception Interrupt */
1da177e4 1153#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1154 printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
1155 "port %ld\n", info->card, channel);
1da177e4 1156#endif
dabe2c13 1157 cyz_handle_rx(info);
02f1175c
JS		 1158 break;
1159 case C_CM_TXBEMPTY:
1160 case C_CM_TXLOWWM:
1161 case C_CM_INTBACK:
1162 /* Transmission Interrupt */
1da177e4 1163#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1164 printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
1165 "port %ld\n", info->card, channel);
1da177e4 1166#endif
dabe2c13 1167 cyz_handle_tx(info);
02f1175c
JS		 1168 break;
1169#endif /* CONFIG_CYZ_INTR */
1170 case C_CM_FATAL:
1171 /* should do something with this !!! */
1172 break;
1173 default:
1174 break;
1175 }
1176 if (delta_count)
bdc04e31 1177 wake_up_interruptible(&info->port.delta_msr_wait);
02f1175c 1178 if (special_count)
6732c8bb 1179 tty_schedule_flip(&info->port);
1da177e4 1180 }
1da177e4
LT		 1181}
1182
1183#ifdef CONFIG_CYZ_INTR
02f1175c 1184static irqreturn_t cyz_interrupt(int irq, void *dev_id)
1da177e4 1185{
f7429034 1186 struct cyclades_card *cinfo = dev_id;
1da177e4 1187
2693f485 1188 if (unlikely(!cyz_is_loaded(cinfo))) {
1da177e4 1189#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1190 printk(KERN_DEBUG "cyz_interrupt: board not yet loaded "
1191 "(IRQ%d).\n", irq);
1da177e4 1192#endif
02f1175c
JS		 1193 return IRQ_NONE;
1194 }
1da177e4 1195
02f1175c
JS		 1196 /* Handle the interrupts */
1197 cyz_handle_cmd(cinfo);
1da177e4 1198
02f1175c
JS		 1199 return IRQ_HANDLED;
1200} /* cyz_interrupt */
1da177e4 1201
02f1175c 1202static void cyz_rx_restart(unsigned long arg)
1da177e4 1203{
02f1175c 1204 struct cyclades_port *info = (struct cyclades_port *)arg;
875b206b 1205 struct cyclades_card *card = info->card;
02f1175c 1206 int retval;
875b206b 1207 __u32 channel = info->line - card->first_line;
02f1175c
JS		 1208 unsigned long flags;
1209
9fa1b3b1 1210 spin_lock_irqsave(&card->card_lock, flags);
875b206b 1211 retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L);
02f1175c 1212 if (retval != 0) {
21719191 1213 printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n",
02f1175c
JS		 1214 info->line, retval);
1215 }
9fa1b3b1 1216 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4
LT		 1217}
1218
02f1175c 1219#else /* CONFIG_CYZ_INTR */
1da177e4 1220
02f1175c 1221static void cyz_poll(unsigned long arg)
1da177e4 1222{
02f1175c
JS		 1223 struct cyclades_card *cinfo;
1224 struct cyclades_port *info;
b7050906 1225 unsigned long expires = jiffies + HZ;
65f76a82 1226 unsigned int port, card;
1da177e4 1227
02f1175c
JS		 1228 for (card = 0; card < NR_CARDS; card++) {
1229 cinfo = &cy_card[card];
1230
2693f485 1231 if (!cy_is_Z(cinfo))
02f1175c 1232 continue;
2693f485 1233 if (!cyz_is_loaded(cinfo))
02f1175c
JS		 1234 continue;
1235
1da177e4 1236 /* Skip first polling cycle to avoid racing conditions with the FW */
02f1175c 1237 if (!cinfo->intr_enabled) {
02f1175c
JS		 1238 cinfo->intr_enabled = 1;
1239 continue;
1240 }
1da177e4 1241
02f1175c 1242 cyz_handle_cmd(cinfo);
1da177e4 1243
02f1175c 1244 for (port = 0; port < cinfo->nports; port++) {
dd025c0c 1245 info = &cinfo->ports[port];
d13549f8 1246
02f1175c 1247 if (!info->throttle)
dabe2c13
JS		 1248 cyz_handle_rx(info);
1249 cyz_handle_tx(info);
02f1175c
JS		 1250 }
1251 /* poll every 'cyz_polling_cycle' period */
b7050906 1252 expires = jiffies + cyz_polling_cycle;
1da177e4 1253 }
b7050906 1254 mod_timer(&cyz_timerlist, expires);
02f1175c 1255} /* cyz_poll */
1da177e4 1256
02f1175c 1257#endif /* CONFIG_CYZ_INTR */
1da177e4
LT		 1258
1259/********** End of block of Cyclades-Z specific code *********/
1260/***********************************************************/
1261
1da177e4
LT		 1262/* This is called whenever a port becomes active;
1263 interrupts are enabled and DTR & RTS are turned on.
1264 */
d13549f8 1265static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1266{
875b206b 1267 struct cyclades_card *card;
02f1175c
JS		 1268 unsigned long flags;
1269 int retval = 0;
cc7fdf49 1270 int channel;
02f1175c 1271 unsigned long page;
1da177e4 1272
02f1175c 1273 card = info->card;
875b206b 1274 channel = info->line - card->first_line;
1da177e4 1275
02f1175c
JS		 1276 page = get_zeroed_page(GFP_KERNEL);
1277 if (!page)
1278 return -ENOMEM;
1da177e4 1279
9fa1b3b1 1280 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1281
cc7fdf49 1282 if (info->port.flags & ASYNC_INITIALIZED)
02f1175c 1283 goto errout;
1da177e4 1284
02f1175c 1285 if (!info->type) {
d13549f8 1286 set_bit(TTY_IO_ERROR, &tty->flags);
02f1175c
JS		 1287 goto errout;
1288 }
1da177e4 1289
77451e53 1290 if (info->port.xmit_buf)
02f1175c
JS		 1291 free_page(page);
1292 else
77451e53 1293 info->port.xmit_buf = (unsigned char *)page;
1da177e4 1294
9fa1b3b1 1295 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4 1296
d13549f8 1297 cy_set_line_char(info, tty);
1da177e4 1298
2693f485 1299 if (!cy_is_Z(card)) {
02f1175c 1300 channel &= 0x03;
1da177e4 1301
9fa1b3b1 1302 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1303
3aeea5b9 1304 cyy_writeb(info, CyCAR, channel);
1da177e4 1305
3aeea5b9 1306 cyy_writeb(info, CyRTPR,
02f1175c
JS		 1307 (info->default_timeout ? info->default_timeout : 0x02));
1308 /* 10ms rx timeout */
1da177e4 1309
3aeea5b9 1310 cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR);
1da177e4 1311
4d768200 1312 cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0);
1da177e4 1313
3aeea5b9 1314 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
02f1175c 1315 } else {
f0eefdc3 1316 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
1da177e4 1317
2693f485 1318 if (!cyz_is_loaded(card))
02f1175c 1319 return -ENODEV;
1da177e4 1320
1da177e4 1321#ifdef CY_DEBUG_OPEN
21719191 1322 printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
f0eefdc3 1323 "base_addr %p\n", card, channel, card->base_addr);
1da177e4 1324#endif
9fa1b3b1 1325 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1326
f0eefdc3 1327 cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE);
1da177e4
LT		 1328#ifdef Z_WAKE
1329#ifdef CONFIG_CYZ_INTR
f0eefdc3 1330 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1331 C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
1332 C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD);
1da177e4 1333#else
f0eefdc3 1334 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1335 C_IN_IOCTLW | C_IN_MDCD);
1336#endif /* CONFIG_CYZ_INTR */
1da177e4
LT		 1337#else
1338#ifdef CONFIG_CYZ_INTR
f0eefdc3 1339 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1340 C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
1341 C_IN_RXNNDT | C_IN_MDCD);
1da177e4 1342#else
f0eefdc3 1343 cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD);
02f1175c
JS		 1344#endif /* CONFIG_CYZ_INTR */
1345#endif /* Z_WAKE */
1346
875b206b 1347 retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
02f1175c 1348 if (retval != 0) {
21719191
JS		 1349 printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was "
1350 "%x\n", info->line, retval);
02f1175c 1351 }
1da177e4 1352
02f1175c 1353 /* Flush RX buffers before raising DTR and RTS */
875b206b 1354 retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L);
02f1175c 1355 if (retval != 0) {
21719191
JS		 1356 printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was "
1357 "%x\n", info->line, retval);
02f1175c 1358 }
1da177e4 1359
02f1175c
JS		 1360 /* set timeout !!! */
1361 /* set RTS and DTR !!! */
4d768200 1362 tty_port_raise_dtr_rts(&info->port);
1da177e4 1363
02f1175c 1364 /* enable send, recv, modem !!! */
cc7fdf49 1365 }
02f1175c 1366
cc7fdf49 1367 info->port.flags |= ASYNC_INITIALIZED;
1da177e4 1368
cc7fdf49
JS		 1369 clear_bit(TTY_IO_ERROR, &tty->flags);
1370 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1371 info->breakon = info->breakoff = 0;
1372 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
1373 info->idle_stats.in_use =
1374 info->idle_stats.recv_idle =
1375 info->idle_stats.xmit_idle = jiffies;
1376
1377 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4
LT		 1378
1379#ifdef CY_DEBUG_OPEN
21719191 1380 printk(KERN_DEBUG "cyc startup done\n");
1da177e4
LT		 1381#endif
1382 return 0;
1383
1384errout:
9fa1b3b1 1385 spin_unlock_irqrestore(&card->card_lock, flags);
cc7fdf49 1386 free_page(page);
1da177e4 1387 return retval;
02f1175c 1388} /* startup */
1da177e4 1389
02f1175c 1390static void start_xmit(struct cyclades_port *info)
1da177e4 1391{
3aeea5b9 1392 struct cyclades_card *card = info->card;
02f1175c 1393 unsigned long flags;
3aeea5b9 1394 int channel = info->line - card->first_line;
1da177e4 1395
2693f485 1396 if (!cy_is_Z(card)) {
9fa1b3b1 1397 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 1398 cyy_writeb(info, CyCAR, channel & 0x03);
1399 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
9fa1b3b1 1400 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1401 } else {
1da177e4 1402#ifdef CONFIG_CYZ_INTR
02f1175c 1403 int retval;
1da177e4 1404
9fa1b3b1 1405 spin_lock_irqsave(&card->card_lock, flags);
875b206b 1406 retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L);
02f1175c 1407 if (retval != 0) {
21719191
JS		 1408 printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was "
1409 "%x\n", info->line, retval);
02f1175c 1410 }
9fa1b3b1 1411 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 1412#else /* CONFIG_CYZ_INTR */
1413 /* Don't have to do anything at this time */
1414#endif /* CONFIG_CYZ_INTR */
1415 }
1416} /* start_xmit */
1da177e4
LT		 1417
1418/*
1419 * This routine shuts down a serial port; interrupts are disabled,
1420 * and DTR is dropped if the hangup on close termio flag is on.
1421 */
d13549f8 1422static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1423{
875b206b 1424 struct cyclades_card *card;
02f1175c 1425 unsigned long flags;
02f1175c 1426
77451e53 1427 if (!(info->port.flags & ASYNC_INITIALIZED))
02f1175c 1428 return;
02f1175c
JS		 1429
1430 card = info->card;
2693f485 1431 if (!cy_is_Z(card)) {
9fa1b3b1 1432 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 1433
1434 /* Clear delta_msr_wait queue to avoid mem leaks. */
bdc04e31 1435 wake_up_interruptible(&info->port.delta_msr_wait);
1da177e4 1436
77451e53 1437 if (info->port.xmit_buf) {
02f1175c 1438 unsigned char *temp;
77451e53
AC		 1439 temp = info->port.xmit_buf;
1440 info->port.xmit_buf = NULL;
02f1175c
JS		 1441 free_page((unsigned long)temp);
1442 }
9db276f8 1443 if (C_HUPCL(tty))
4d768200
JS		 1444 cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR);
1445
3aeea5b9 1446 cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR);
02f1175c
JS		 1447 /* it may be appropriate to clear _XMIT at
1448 some later date (after testing)!!! */
1449
d13549f8 1450 set_bit(TTY_IO_ERROR, &tty->flags);
77451e53 1451 info->port.flags &= ~ASYNC_INITIALIZED;
9fa1b3b1 1452 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1453 } else {
1da177e4 1454#ifdef CY_DEBUG_OPEN
0e7f4194 1455 int channel = info->line - card->first_line;
21719191 1456 printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
f0eefdc3 1457 "base_addr %p\n", card, channel, card->base_addr);
1da177e4
LT		 1458#endif
1459
2693f485 1460 if (!cyz_is_loaded(card))
02f1175c 1461 return;
1da177e4 1462
9fa1b3b1 1463 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1464
77451e53 1465 if (info->port.xmit_buf) {
02f1175c 1466 unsigned char *temp;
77451e53
AC		 1467 temp = info->port.xmit_buf;
1468 info->port.xmit_buf = NULL;
02f1175c 1469 free_page((unsigned long)temp);
1da177e4 1470 }
02f1175c 1471
9db276f8 1472 if (C_HUPCL(tty))
4d768200 1473 tty_port_lower_dtr_rts(&info->port);
1da177e4 1474
d13549f8 1475 set_bit(TTY_IO_ERROR, &tty->flags);
77451e53 1476 info->port.flags &= ~ASYNC_INITIALIZED;
02f1175c 1477
9fa1b3b1 1478 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1479 }
1da177e4
LT		 1480
1481#ifdef CY_DEBUG_OPEN
21719191 1482 printk(KERN_DEBUG "cyc shutdown done\n");
1da177e4 1483#endif
02f1175c 1484} /* shutdown */
1da177e4
LT		 1485
1486/*
1487 * ------------------------------------------------------------
1488 * cy_open() and friends
1489 * ------------------------------------------------------------
1490 */
1491
1da177e4
LT		 1492/*
1493 * This routine is called whenever a serial port is opened. It
1494 * performs the serial-specific initialization for the tty structure.
1495 */
02f1175c 1496static int cy_open(struct tty_struct *tty, struct file *filp)
1da177e4 1497{
02f1175c 1498 struct cyclades_port *info;
410235fd 1499 unsigned int i, line = tty->index;
65f76a82 1500 int retval;
1da177e4 1501
dd025c0c
JS		 1502 for (i = 0; i < NR_CARDS; i++)
1503 if (line < cy_card[i].first_line + cy_card[i].nports &&
1504 line >= cy_card[i].first_line)
1505 break;
1506 if (i >= NR_CARDS)
1507 return -ENODEV;
1508 info = &cy_card[i].ports[line - cy_card[i].first_line];
15ed6cc0 1509 if (info->line < 0)
02f1175c 1510 return -ENODEV;
1da177e4 1511
02f1175c
JS		 1512 /* If the card's firmware hasn't been loaded,
1513 treat it as absent from the system. This
1514 will make the user pay attention.
1515 */
2693f485 1516 if (cy_is_Z(info->card)) {
875b206b 1517 struct cyclades_card *cinfo = info->card;
02f1175c
JS		 1518 struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS;
1519
2693f485
JS		 1520 if (!cyz_is_loaded(cinfo)) {
1521 if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) &&
101b8159
JS		 1522 readl(&firm_id->signature) ==
1523 ZFIRM_HLT) {
21719191
JS		 1524 printk(KERN_ERR "cyc:Cyclades-Z Error: you "
1525 "need an external power supply for "
1526 "this number of ports.\nFirmware "
1527 "halted.\n");
02f1175c 1528 } else {
21719191
JS		 1529 printk(KERN_ERR "cyc:Cyclades-Z firmware not "
1530 "yet loaded\n");
02f1175c
JS		 1531 }
1532 return -ENODEV;
1533 }
1534#ifdef CONFIG_CYZ_INTR
1535 else {
1536 /* In case this Z board is operating in interrupt mode, its
1537 interrupts should be enabled as soon as the first open
1538 happens to one of its ports. */
1539 if (!cinfo->intr_enabled) {
97e87f8e 1540 u16 intr;
02f1175c 1541
02f1175c 1542 /* Enable interrupts on the PLX chip */
97e87f8e
JS		 1543 intr = readw(&cinfo->ctl_addr.p9060->
1544 intr_ctrl_stat) | 0x0900;
1545 cy_writew(&cinfo->ctl_addr.p9060->
1546 intr_ctrl_stat, intr);
02f1175c
JS		 1547 /* Enable interrupts on the FW */
1548 retval = cyz_issue_cmd(cinfo, 0,
1549 C_CM_IRQ_ENBL, 0L);
1550 if (retval != 0) {
21719191
JS		 1551 printk(KERN_ERR "cyc:IRQ enable retval "
1552 "was %x\n", retval);
02f1175c 1553 }
02f1175c
JS		 1554 cinfo->intr_enabled = 1;
1555 }
1da177e4 1556 }
02f1175c
JS		 1557#endif /* CONFIG_CYZ_INTR */
1558 /* Make sure this Z port really exists in hardware */
1559 if (info->line > (cinfo->first_line + cinfo->nports - 1))
1560 return -ENODEV;
1da177e4 1561 }
1da177e4 1562#ifdef CY_DEBUG_OTHER
21719191 1563 printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line);
1da177e4 1564#endif
02f1175c 1565 tty->driver_data = info;
15ed6cc0 1566 if (serial_paranoia_check(info, tty->name, "cy_open"))
02f1175c 1567 return -ENODEV;
15ed6cc0 1568
1da177e4 1569#ifdef CY_DEBUG_OPEN
21719191 1570 printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line,
77451e53 1571 info->port.count);
1da177e4 1572#endif
77451e53 1573 info->port.count++;
1da177e4 1574#ifdef CY_DEBUG_COUNT
21719191 1575 printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n",
77451e53 1576 current->pid, info->port.count);
1da177e4 1577#endif
1da177e4 1578
02f1175c
JS		 1579 /*
1580 * Start up serial port
1581 */
d13549f8 1582 retval = cy_startup(info, tty);
15ed6cc0 1583 if (retval)
02f1175c 1584 return retval;
1da177e4 1585
f0737579 1586 retval = tty_port_block_til_ready(&info->port, tty, filp);
02f1175c 1587 if (retval) {
1da177e4 1588#ifdef CY_DEBUG_OPEN
21719191
JS		 1589 printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready "
1590 "with %d\n", retval);
1da177e4 1591#endif
02f1175c
JS		 1592 return retval;
1593 }
1da177e4 1594
02f1175c 1595 info->throttle = 0;
d13549f8 1596 tty_port_tty_set(&info->port, tty);
1da177e4 1597
02f1175c 1598#ifdef CY_DEBUG_OPEN
21719191 1599 printk(KERN_DEBUG "cyc:cy_open done\n");
02f1175c
JS		 1600#endif
1601 return 0;
1602} /* cy_open */
1da177e4
LT		 1603
1604/*
1605 * cy_wait_until_sent() --- wait until the transmitter is empty
1606 */
02f1175c 1607static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
1da177e4 1608{
875b206b 1609 struct cyclades_card *card;
cab9bdd1 1610 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1611 unsigned long orig_jiffies;
1612 int char_time;
1613
1614 if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
1615 return;
1616
1617 if (info->xmit_fifo_size == 0)
1618 return; /* Just in case.... */
1da177e4 1619
02f1175c
JS		 1620 orig_jiffies = jiffies;
1621 /*
1622 * Set the check interval to be 1/5 of the estimated time to
1623 * send a single character, and make it at least 1. The check
1624 * interval should also be less than the timeout.
1625 *
1626 * Note: we have to use pretty tight timings here to satisfy
1627 * the NIST-PCTS.
1628 */
1629 char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
1630 char_time = char_time / 5;
1631 if (char_time <= 0)
1632 char_time = 1;
1633 if (timeout < 0)
1634 timeout = 0;
1635 if (timeout)
1636 char_time = min(char_time, timeout);
1637 /*
1638 * If the transmitter hasn't cleared in twice the approximate
1639 * amount of time to send the entire FIFO, it probably won't
1640 * ever clear. This assumes the UART isn't doing flow
1641 * control, which is currently the case. Hence, if it ever
1642 * takes longer than info->timeout, this is probably due to a
1643 * UART bug of some kind. So, we clamp the timeout parameter at
1644 * 2*info->timeout.
1645 */
1646 if (!timeout || timeout > 2 * info->timeout)
1647 timeout = 2 * info->timeout;
8bab534b 1648
02f1175c 1649 card = info->card;
2693f485 1650 if (!cy_is_Z(card)) {
3aeea5b9 1651 while (cyy_readb(info, CySRER) & CyTxRdy) {
02f1175c
JS		 1652 if (msleep_interruptible(jiffies_to_msecs(char_time)))
1653 break;
1654 if (timeout && time_after(jiffies, orig_jiffies +
1655 timeout))
1656 break;
1657 }
1da177e4 1658 }
02f1175c
JS		 1659 /* Run one more char cycle */
1660 msleep_interruptible(jiffies_to_msecs(char_time * 5));
1da177e4
LT		 1661}
1662
978e595f
AC		 1663static void cy_flush_buffer(struct tty_struct *tty)
1664{
1665 struct cyclades_port *info = tty->driver_data;
1666 struct cyclades_card *card;
1667 int channel, retval;
1668 unsigned long flags;
1669
1670#ifdef CY_DEBUG_IO
1671 printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line);
1672#endif
1673
1674 if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
1675 return;
1676
1677 card = info->card;
1678 channel = info->line - card->first_line;
1679
1680 spin_lock_irqsave(&card->card_lock, flags);
1681 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1682 spin_unlock_irqrestore(&card->card_lock, flags);
1683
2693f485 1684 if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board
978e595f
AC		 1685 buffers as well */
1686 spin_lock_irqsave(&card->card_lock, flags);
1687 retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L);
1688 if (retval != 0) {
1689 printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d "
1690 "was %x\n", info->line, retval);
1691 }
1692 spin_unlock_irqrestore(&card->card_lock, flags);
1693 }
1694 tty_wakeup(tty);
1695} /* cy_flush_buffer */
1696
1697
e936ffd5 1698static void cy_do_close(struct tty_port *port)
1da177e4 1699{
e936ffd5
AC		 1700 struct cyclades_port *info = container_of(port, struct cyclades_port,
1701 port);
9fa1b3b1 1702 struct cyclades_card *card;
02f1175c 1703 unsigned long flags;
3aeea5b9 1704 int channel;
1da177e4 1705
9fa1b3b1 1706 card = info->card;
3aeea5b9 1707 channel = info->line - card->first_line;
9fa1b3b1 1708 spin_lock_irqsave(&card->card_lock, flags);
02f1175c 1709
2693f485 1710 if (!cy_is_Z(card)) {
02f1175c 1711 /* Stop accepting input */
3aeea5b9
JS		 1712 cyy_writeb(info, CyCAR, channel & 0x03);
1713 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);
77451e53 1714 if (info->port.flags & ASYNC_INITIALIZED) {
15ed6cc0
AC		 1715 /* Waiting for on-board buffers to be empty before
1716 closing the port */
9fa1b3b1 1717 spin_unlock_irqrestore(&card->card_lock, flags);
e936ffd5 1718 cy_wait_until_sent(port->tty, info->timeout);
9fa1b3b1 1719 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 1720 }
1721 } else {
1722#ifdef Z_WAKE
15ed6cc0
AC		 1723 /* Waiting for on-board buffers to be empty before closing
1724 the port */
f0eefdc3 1725 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
02f1175c
JS		 1726 int retval;
1727
f0eefdc3 1728 if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) {
9fa1b3b1 1729 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
02f1175c 1730 if (retval != 0) {
21719191
JS		 1731 printk(KERN_DEBUG "cyc:cy_close retval on "
1732 "ttyC%d was %x\n", info->line, retval);
02f1175c 1733 }
9fa1b3b1 1734 spin_unlock_irqrestore(&card->card_lock, flags);
2c7fea99 1735 wait_for_completion_interruptible(&info->shutdown_wait);
9fa1b3b1 1736 spin_lock_irqsave(&card->card_lock, flags);
02f1175c 1737 }
1da177e4 1738#endif
02f1175c 1739 }
9fa1b3b1 1740 spin_unlock_irqrestore(&card->card_lock, flags);
e936ffd5
AC		 1741 cy_shutdown(info, port->tty);
1742}
1da177e4 1743
e936ffd5
AC		 1744/*
1745 * This routine is called when a particular tty device is closed.
1746 */
1747static void cy_close(struct tty_struct *tty, struct file *filp)
1748{
1749 struct cyclades_port *info = tty->driver_data;
1750 if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
1751 return;
1752 tty_port_close(&info->port, tty, filp);
02f1175c 1753} /* cy_close */
1da177e4
LT		 1754
1755/* This routine gets called when tty_write has put something into
1756 * the write_queue. The characters may come from user space or
1757 * kernel space.
1758 *
1759 * This routine will return the number of characters actually
1760 * accepted for writing.
1761 *
1762 * If the port is not already transmitting stuff, start it off by
1763 * enabling interrupts. The interrupt service routine will then
1764 * ensure that the characters are sent.
1765 * If the port is already active, there is no need to kick it.
1766 *
1767 */
02f1175c 1768static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
1da177e4 1769{
cab9bdd1 1770 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1771 unsigned long flags;
1772 int c, ret = 0;
1da177e4
LT		 1773
1774#ifdef CY_DEBUG_IO
21719191 1775 printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line);
1da177e4
LT		 1776#endif
1777
15ed6cc0 1778 if (serial_paranoia_check(info, tty->name, "cy_write"))
02f1175c 1779 return 0;
1da177e4 1780
77451e53 1781 if (!info->port.xmit_buf)
02f1175c 1782 return 0;
1da177e4 1783
9fa1b3b1 1784 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 1785 while (1) {
1a4e2351
HH		 1786 c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1));
1787 c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head));
02f1175c
JS		 1788
1789 if (c <= 0)
1790 break;
1791
77451e53 1792 memcpy(info->port.xmit_buf + info->xmit_head, buf, c);
02f1175c
JS		 1793 info->xmit_head = (info->xmit_head + c) &
1794 (SERIAL_XMIT_SIZE - 1);
1795 info->xmit_cnt += c;
1796 buf += c;
1797 count -= c;
1798 ret += c;
1799 }
9fa1b3b1 1800 spin_unlock_irqrestore(&info->card->card_lock, flags);
02f1175c
JS		 1801
1802 info->idle_stats.xmit_bytes += ret;
1803 info->idle_stats.xmit_idle = jiffies;
1804
15ed6cc0 1805 if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped)
02f1175c 1806 start_xmit(info);
15ed6cc0 1807
02f1175c
JS		 1808 return ret;
1809} /* cy_write */
1da177e4
LT		 1810
1811/*
1812 * This routine is called by the kernel to write a single
1813 * character to the tty device. If the kernel uses this routine,
1814 * it must call the flush_chars() routine (if defined) when it is
1815 * done stuffing characters into the driver. If there is no room
1816 * in the queue, the character is ignored.
1817 */
76b25a55 1818static int cy_put_char(struct tty_struct *tty, unsigned char ch)
1da177e4 1819{
cab9bdd1 1820 struct cyclades_port *info = tty->driver_data;
02f1175c 1821 unsigned long flags;
1da177e4
LT		 1822
1823#ifdef CY_DEBUG_IO
21719191 1824 printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line);
1da177e4
LT		 1825#endif
1826
02f1175c 1827 if (serial_paranoia_check(info, tty->name, "cy_put_char"))
76b25a55 1828 return 0;
1da177e4 1829
77451e53 1830 if (!info->port.xmit_buf)
76b25a55 1831 return 0;
1da177e4 1832
9fa1b3b1 1833 spin_lock_irqsave(&info->card->card_lock, flags);
90cc3018 1834 if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) {
9fa1b3b1 1835 spin_unlock_irqrestore(&info->card->card_lock, flags);
76b25a55 1836 return 0;
02f1175c 1837 }
1da177e4 1838
77451e53 1839 info->port.xmit_buf[info->xmit_head++] = ch;
02f1175c
JS		 1840 info->xmit_head &= SERIAL_XMIT_SIZE - 1;
1841 info->xmit_cnt++;
1da177e4
LT		 1842 info->idle_stats.xmit_bytes++;
1843 info->idle_stats.xmit_idle = jiffies;
9fa1b3b1 1844 spin_unlock_irqrestore(&info->card->card_lock, flags);
76b25a55 1845 return 1;
02f1175c 1846} /* cy_put_char */
1da177e4
LT		 1847
1848/*
1849 * This routine is called by the kernel after it has written a
15ed6cc0 1850 * series of characters to the tty device using put_char().
1da177e4 1851 */
02f1175c 1852static void cy_flush_chars(struct tty_struct *tty)
1da177e4 1853{
cab9bdd1 1854 struct cyclades_port *info = tty->driver_data;
02f1175c 1855
1da177e4 1856#ifdef CY_DEBUG_IO
21719191 1857 printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line);
1da177e4
LT		 1858#endif
1859
02f1175c
JS		 1860 if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
1861 return;
1da177e4 1862
02f1175c 1863 if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
77451e53 1864 !info->port.xmit_buf)
02f1175c 1865 return;
1da177e4 1866
02f1175c
JS		 1867 start_xmit(info);
1868} /* cy_flush_chars */
1da177e4
LT		 1869
1870/*
1871 * This routine returns the numbers of characters the tty driver
1872 * will accept for queuing to be written. This number is subject
1873 * to change as output buffers get emptied, or if the output flow
1874 * control is activated.
1875 */
02f1175c 1876static int cy_write_room(struct tty_struct *tty)
1da177e4 1877{
cab9bdd1 1878 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1879 int ret;
1880
1da177e4 1881#ifdef CY_DEBUG_IO
21719191 1882 printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line);
1da177e4
LT		 1883#endif
1884
02f1175c
JS		 1885 if (serial_paranoia_check(info, tty->name, "cy_write_room"))
1886 return 0;
1887 ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
1888 if (ret < 0)
1889 ret = 0;
1890 return ret;
1891} /* cy_write_room */
1da177e4 1892
02f1175c 1893static int cy_chars_in_buffer(struct tty_struct *tty)
1da177e4 1894{
cab9bdd1 1895 struct cyclades_port *info = tty->driver_data;
1da177e4 1896
02f1175c
JS		 1897 if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
1898 return 0;
1899
1da177e4 1900#ifdef Z_EXT_CHARS_IN_BUFFER
f0eefdc3 1901 if (!cy_is_Z(info->card)) {
02f1175c 1902#endif /* Z_EXT_CHARS_IN_BUFFER */
1da177e4 1903#ifdef CY_DEBUG_IO
21719191
JS		 1904 printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
1905 info->line, info->xmit_cnt);
1da177e4 1906#endif
02f1175c 1907 return info->xmit_cnt;
1da177e4 1908#ifdef Z_EXT_CHARS_IN_BUFFER
02f1175c 1909 } else {
f0eefdc3 1910 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
02f1175c 1911 int char_count;
ad39c300 1912 __u32 tx_put, tx_get, tx_bufsize;
02f1175c 1913
db05c3b1
JS		 1914 tx_get = readl(&buf_ctrl->tx_get);
1915 tx_put = readl(&buf_ctrl->tx_put);
1916 tx_bufsize = readl(&buf_ctrl->tx_bufsize);
02f1175c
JS		 1917 if (tx_put >= tx_get)
1918 char_count = tx_put - tx_get;
1919 else
1920 char_count = tx_put - tx_get + tx_bufsize;
1da177e4 1921#ifdef CY_DEBUG_IO
21719191
JS		 1922 printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
1923 info->line, info->xmit_cnt + char_count);
1da177e4 1924#endif
096dcfce 1925 return info->xmit_cnt + char_count;
02f1175c
JS		 1926 }
1927#endif /* Z_EXT_CHARS_IN_BUFFER */
1928} /* cy_chars_in_buffer */
1da177e4
LT		 1929
1930/*
1931 * ------------------------------------------------------------
1932 * cy_ioctl() and friends
1933 * ------------------------------------------------------------
1934 */
1935
1a86b5e3 1936static void cyy_baud_calc(struct cyclades_port *info, __u32 baud)
1da177e4 1937{
02f1175c 1938 int co, co_val, bpr;
1a86b5e3 1939 __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 :
02f1175c 1940 25000000);
1da177e4 1941
02f1175c
JS		 1942 if (baud == 0) {
1943 info->tbpr = info->tco = info->rbpr = info->rco = 0;
1944 return;
1945 }
1da177e4 1946
02f1175c
JS		 1947 /* determine which prescaler to use */
1948 for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
1949 if (cy_clock / co_val / baud > 63)
1950 break;
1951 }
1da177e4 1952
02f1175c
JS		 1953 bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
1954 if (bpr > 255)
1955 bpr = 255;
1da177e4 1956
02f1175c
JS		 1957 info->tbpr = info->rbpr = bpr;
1958 info->tco = info->rco = co;
1da177e4
LT		 1959}
1960
1961/*
1962 * This routine finds or computes the various line characteristics.
1963 * It used to be called config_setup
1964 */
d13549f8 1965static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1966{
875b206b 1967 struct cyclades_card *card;
02f1175c 1968 unsigned long flags;
3aeea5b9 1969 int channel;
02f1175c 1970 unsigned cflag, iflag;
02f1175c
JS		 1971 int baud, baud_rate = 0;
1972 int i;
1973
15ed6cc0 1974 if (info->line == -1)
02f1175c 1975 return;
15ed6cc0 1976
adc8d746
AC		 1977 cflag = tty->termios.c_cflag;
1978 iflag = tty->termios.c_iflag;
1da177e4 1979
02f1175c
JS		 1980 /*
1981 * Set up the tty->alt_speed kludge
1982 */
d13549f8
JS		 1983 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
1984 tty->alt_speed = 57600;
1985 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
1986 tty->alt_speed = 115200;
1987 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
1988 tty->alt_speed = 230400;
1989 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
1990 tty->alt_speed = 460800;
02f1175c
JS		 1991
1992 card = info->card;
875b206b 1993 channel = info->line - card->first_line;
02f1175c 1994
2693f485 1995 if (!cy_is_Z(card)) {
46fb7825
JS		 1996 u32 cflags;
1997
02f1175c 1998 /* baud rate */
d13549f8 1999 baud = tty_get_baud_rate(tty);
77451e53 2000 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2001 ASYNC_SPD_CUST) {
2002 if (info->custom_divisor)
2003 baud_rate = info->baud / info->custom_divisor;
2004 else
2005 baud_rate = info->baud;
2006 } else if (baud > CD1400_MAX_SPEED) {
2007 baud = CD1400_MAX_SPEED;
2008 }
2009 /* find the baud index */
2010 for (i = 0; i < 20; i++) {
15ed6cc0 2011 if (baud == baud_table[i])
02f1175c 2012 break;
02f1175c 2013 }
15ed6cc0 2014 if (i == 20)
02f1175c 2015 i = 19; /* CD1400_MAX_SPEED */
02f1175c 2016
77451e53 2017 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2018 ASYNC_SPD_CUST) {
2019 cyy_baud_calc(info, baud_rate);
2020 } else {
2021 if (info->chip_rev >= CD1400_REV_J) {
2022 /* It is a CD1400 rev. J or later */
2023 info->tbpr = baud_bpr_60[i]; /* Tx BPR */
2024 info->tco = baud_co_60[i]; /* Tx CO */
2025 info->rbpr = baud_bpr_60[i]; /* Rx BPR */
2026 info->rco = baud_co_60[i]; /* Rx CO */
2027 } else {
2028 info->tbpr = baud_bpr_25[i]; /* Tx BPR */
2029 info->tco = baud_co_25[i]; /* Tx CO */
2030 info->rbpr = baud_bpr_25[i]; /* Rx BPR */
2031 info->rco = baud_co_25[i]; /* Rx CO */
2032 }
2033 }
2034 if (baud_table[i] == 134) {
2035 /* get it right for 134.5 baud */
2036 info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
2037 2;
77451e53 2038 } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2039 ASYNC_SPD_CUST) {
2040 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2041 baud_rate) + 2;
2042 } else if (baud_table[i]) {
2043 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2044 baud_table[i]) + 2;
2045 /* this needs to be propagated into the card info */
2046 } else {
2047 info->timeout = 0;
2048 }
2049 /* By tradition (is it a standard?) a baud rate of zero
2050 implies the line should be/has been closed. A bit
2051 later in this routine such a test is performed. */
2052
2053 /* byte size and parity */
2054 info->cor5 = 0;
2055 info->cor4 = 0;
2056 /* receive threshold */
2057 info->cor3 = (info->default_threshold ?
2058 info->default_threshold : baud_cor3[i]);
2059 info->cor2 = CyETC;
2060 switch (cflag & CSIZE) {
2061 case CS5:
2062 info->cor1 = Cy_5_BITS;
2063 break;
2064 case CS6:
2065 info->cor1 = Cy_6_BITS;
2066 break;
2067 case CS7:
2068 info->cor1 = Cy_7_BITS;
2069 break;
2070 case CS8:
2071 info->cor1 = Cy_8_BITS;
2072 break;
2073 }
15ed6cc0 2074 if (cflag & CSTOPB)
02f1175c 2075 info->cor1 |= Cy_2_STOP;
15ed6cc0 2076
02f1175c 2077 if (cflag & PARENB) {
15ed6cc0 2078 if (cflag & PARODD)
02f1175c 2079 info->cor1 |= CyPARITY_O;
15ed6cc0 2080 else
02f1175c 2081 info->cor1 |= CyPARITY_E;
15ed6cc0 2082 } else
02f1175c 2083 info->cor1 |= CyPARITY_NONE;
02f1175c
JS		 2084
2085 /* CTS flow control flag */
2086 if (cflag & CRTSCTS) {
77451e53 2087 info->port.flags |= ASYNC_CTS_FLOW;
02f1175c
JS		 2088 info->cor2 |= CyCtsAE;
2089 } else {
77451e53 2090 info->port.flags &= ~ASYNC_CTS_FLOW;
02f1175c
JS		 2091 info->cor2 &= ~CyCtsAE;
2092 }
2093 if (cflag & CLOCAL)
77451e53 2094 info->port.flags &= ~ASYNC_CHECK_CD;
02f1175c 2095 else
77451e53 2096 info->port.flags |= ASYNC_CHECK_CD;
1da177e4
LT		 2097
2098 /***********************************************
2099 The hardware option, CyRtsAO, presents RTS when
2100 the chip has characters to send. Since most modems
2101 use RTS as reverse (inbound) flow control, this
2102 option is not used. If inbound flow control is
2103 necessary, DTR can be programmed to provide the
2104 appropriate signals for use with a non-standard
2105 cable. Contact Marcio Saito for details.
2106 ***********************************************/
2107
02f1175c 2108 channel &= 0x03;
1da177e4 2109
9fa1b3b1 2110 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2111 cyy_writeb(info, CyCAR, channel);
02f1175c
JS		 2112
2113 /* tx and rx baud rate */
2114
3aeea5b9
JS		 2115 cyy_writeb(info, CyTCOR, info->tco);
2116 cyy_writeb(info, CyTBPR, info->tbpr);
2117 cyy_writeb(info, CyRCOR, info->rco);
2118 cyy_writeb(info, CyRBPR, info->rbpr);
02f1175c
JS		 2119
2120 /* set line characteristics according configuration */
2121
3aeea5b9
JS		 2122 cyy_writeb(info, CySCHR1, START_CHAR(tty));
2123 cyy_writeb(info, CySCHR2, STOP_CHAR(tty));
2124 cyy_writeb(info, CyCOR1, info->cor1);
2125 cyy_writeb(info, CyCOR2, info->cor2);
2126 cyy_writeb(info, CyCOR3, info->cor3);
2127 cyy_writeb(info, CyCOR4, info->cor4);
2128 cyy_writeb(info, CyCOR5, info->cor5);
02f1175c 2129
3aeea5b9
JS		 2130 cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
2131 CyCOR3ch);
02f1175c 2132
15ed6cc0 2133 /* !!! Is this needed? */
3aeea5b9
JS		 2134 cyy_writeb(info, CyCAR, channel);
2135 cyy_writeb(info, CyRTPR,
02f1175c
JS		 2136 (info->default_timeout ? info->default_timeout : 0x02));
2137 /* 10ms rx timeout */
2138
46fb7825
JS		 2139 cflags = CyCTS;
2140 if (!C_CLOCAL(tty))
2141 cflags |= CyDSR | CyRI | CyDCD;
2142 /* without modem intr */
2143 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh);
2144 /* act on 1->0 modem transitions */
2145 if ((cflag & CRTSCTS) && info->rflow)
2146 cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]);
2147 else
2148 cyy_writeb(info, CyMCOR1, cflags);
2149 /* act on 0->1 modem transitions */
2150 cyy_writeb(info, CyMCOR2, cflags);
02f1175c 2151
4d768200
JS		 2152 if (i == 0) /* baud rate is zero, turn off line */
2153 cyy_change_rts_dtr(info, 0, TIOCM_DTR);
2154 else
2155 cyy_change_rts_dtr(info, TIOCM_DTR, 0);
1da177e4 2156
d13549f8 2157 clear_bit(TTY_IO_ERROR, &tty->flags);
9fa1b3b1 2158 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4 2159
1da177e4 2160 } else {
f0eefdc3 2161 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
1a86b5e3 2162 __u32 sw_flow;
02f1175c 2163 int retval;
1da177e4 2164
2693f485 2165 if (!cyz_is_loaded(card))
02f1175c 2166 return;
1da177e4 2167
02f1175c 2168 /* baud rate */
d13549f8 2169 baud = tty_get_baud_rate(tty);
77451e53 2170 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2171 ASYNC_SPD_CUST) {
2172 if (info->custom_divisor)
2173 baud_rate = info->baud / info->custom_divisor;
2174 else
2175 baud_rate = info->baud;
2176 } else if (baud > CYZ_MAX_SPEED) {
2177 baud = CYZ_MAX_SPEED;
2178 }
2179 cy_writel(&ch_ctrl->comm_baud, baud);
2180
2181 if (baud == 134) {
2182 /* get it right for 134.5 baud */
2183 info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
2184 2;
77451e53 2185 } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2186 ASYNC_SPD_CUST) {
2187 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2188 baud_rate) + 2;
2189 } else if (baud) {
2190 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2191 baud) + 2;
2192 /* this needs to be propagated into the card info */
2193 } else {
2194 info->timeout = 0;
2195 }
1da177e4 2196
02f1175c
JS		 2197 /* byte size and parity */
2198 switch (cflag & CSIZE) {
2199 case CS5:
2200 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5);
2201 break;
2202 case CS6:
2203 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6);
2204 break;
2205 case CS7:
2206 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7);
2207 break;
2208 case CS8:
2209 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8);
2210 break;
2211 }
2212 if (cflag & CSTOPB) {
2213 cy_writel(&ch_ctrl->comm_data_l,
db05c3b1 2214 readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
02f1175c
JS		 2215 } else {
2216 cy_writel(&ch_ctrl->comm_data_l,
db05c3b1 2217 readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
02f1175c
JS		 2218 }
2219 if (cflag & PARENB) {
15ed6cc0 2220 if (cflag & PARODD)
02f1175c 2221 cy_writel(&ch_ctrl->comm_parity, C_PR_ODD);
15ed6cc0 2222 else
02f1175c 2223 cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN);
15ed6cc0 2224 } else
02f1175c 2225 cy_writel(&ch_ctrl->comm_parity, C_PR_NONE);
1da177e4 2226
02f1175c
JS		 2227 /* CTS flow control flag */
2228 if (cflag & CRTSCTS) {
2229 cy_writel(&ch_ctrl->hw_flow,
db05c3b1 2230 readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
02f1175c 2231 } else {
db05c3b1
JS		 2232 cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) &
2233 ~(C_RS_CTS | C_RS_RTS));
02f1175c
JS		 2234 }
2235 /* As the HW flow control is done in firmware, the driver
2236 doesn't need to care about it */
77451e53 2237 info->port.flags &= ~ASYNC_CTS_FLOW;
02f1175c
JS		 2238
2239 /* XON/XOFF/XANY flow control flags */
2240 sw_flow = 0;
2241 if (iflag & IXON) {
2242 sw_flow |= C_FL_OXX;
2243 if (iflag & IXANY)
2244 sw_flow |= C_FL_OIXANY;
2245 }
2246 cy_writel(&ch_ctrl->sw_flow, sw_flow);
2247
875b206b 2248 retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
02f1175c 2249 if (retval != 0) {
21719191
JS		 2250 printk(KERN_ERR "cyc:set_line_char retval on ttyC%d "
2251 "was %x\n", info->line, retval);
02f1175c
JS		 2252 }
2253
2254 /* CD sensitivity */
15ed6cc0 2255 if (cflag & CLOCAL)
77451e53 2256 info->port.flags &= ~ASYNC_CHECK_CD;
15ed6cc0 2257 else
77451e53 2258 info->port.flags |= ASYNC_CHECK_CD;
1da177e4 2259
02f1175c
JS		 2260 if (baud == 0) { /* baud rate is zero, turn off line */
2261 cy_writel(&ch_ctrl->rs_control,
db05c3b1 2262 readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
1da177e4 2263#ifdef CY_DEBUG_DTR
21719191 2264 printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n");
1da177e4 2265#endif
02f1175c
JS		 2266 } else {
2267 cy_writel(&ch_ctrl->rs_control,
db05c3b1 2268 readl(&ch_ctrl->rs_control) | C_RS_DTR);
1da177e4 2269#ifdef CY_DEBUG_DTR
21719191 2270 printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n");
1da177e4 2271#endif
02f1175c 2272 }
1da177e4 2273
15ed6cc0 2274 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
02f1175c 2275 if (retval != 0) {
21719191
JS		 2276 printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d "
2277 "was %x\n", info->line, retval);
02f1175c 2278 }
1da177e4 2279
d13549f8 2280 clear_bit(TTY_IO_ERROR, &tty->flags);
1da177e4 2281 }
02f1175c 2282} /* set_line_char */
1da177e4 2283
6c28181c 2284static int cy_get_serial_info(struct cyclades_port *info,
15ed6cc0 2285 struct serial_struct __user *retinfo)
1da177e4 2286{
875b206b 2287 struct cyclades_card *cinfo = info->card;
6c28181c
JS		 2288 struct serial_struct tmp = {
2289 .type = info->type,
2290 .line = info->line,
2291 .port = (info->card - cy_card) * 0x100 + info->line -
2292 cinfo->first_line,
2293 .irq = cinfo->irq,
2294 .flags = info->port.flags,
2295 .close_delay = info->port.close_delay,
2296 .closing_wait = info->port.closing_wait,
2297 .baud_base = info->baud,
2298 .custom_divisor = info->custom_divisor,
2299 .hub6 = 0, /*!!! */
2300 };
02f1175c 2301 return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
6c28181c 2302}
1da177e4
LT		 2303
2304static int
d13549f8 2305cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
15ed6cc0 2306 struct serial_struct __user *new_info)
1da177e4 2307{
02f1175c 2308 struct serial_struct new_serial;
25c3cdf8 2309 int ret;
02f1175c
JS		 2310
2311 if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2312 return -EFAULT;
02f1175c 2313
25c3cdf8 2314 mutex_lock(&info->port.mutex);
02f1175c 2315 if (!capable(CAP_SYS_ADMIN)) {
44b7d1b3 2316 if (new_serial.close_delay != info->port.close_delay ||
02f1175c
JS		 2317 new_serial.baud_base != info->baud ||
2318 (new_serial.flags & ASYNC_FLAGS &
2319 ~ASYNC_USR_MASK) !=
77451e53 2320 (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))
25c3cdf8
AC		 2321 {
2322 mutex_unlock(&info->port.mutex);
02f1175c 2323 return -EPERM;
25c3cdf8 2324 }
77451e53 2325 info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) |
02f1175c
JS		 2326 (new_serial.flags & ASYNC_USR_MASK);
2327 info->baud = new_serial.baud_base;
2328 info->custom_divisor = new_serial.custom_divisor;
2329 goto check_and_exit;
2330 }
2331
2332 /*
2333 * OK, past this point, all the error checking has been done.
2334 * At this point, we start making changes.....
2335 */
2336
2337 info->baud = new_serial.baud_base;
2338 info->custom_divisor = new_serial.custom_divisor;
77451e53 2339 info->port.flags = (info->port.flags & ~ASYNC_FLAGS) |
02f1175c 2340 (new_serial.flags & ASYNC_FLAGS);
44b7d1b3
AC		 2341 info->port.close_delay = new_serial.close_delay * HZ / 100;
2342 info->port.closing_wait = new_serial.closing_wait * HZ / 100;
1da177e4
LT		 2343
2344check_and_exit:
77451e53 2345 if (info->port.flags & ASYNC_INITIALIZED) {
d13549f8 2346 cy_set_line_char(info, tty);
25c3cdf8 2347 ret = 0;
02f1175c 2348 } else {
25c3cdf8 2349 ret = cy_startup(info, tty);
02f1175c 2350 }
25c3cdf8
AC		 2351 mutex_unlock(&info->port.mutex);
2352 return ret;
02f1175c 2353} /* set_serial_info */
1da177e4
LT		 2354
2355/*
2356 * get_lsr_info - get line status register info
2357 *
2358 * Purpose: Let user call ioctl() to get info when the UART physically
2359 * is emptied. On bus types like RS485, the transmitter must
2360 * release the bus after transmitting. This must be done when
2361 * the transmit shift register is empty, not be done when the
2362 * transmit holding register is empty. This functionality
2363 * allows an RS485 driver to be written in user space.
2364 */
15ed6cc0 2365static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
1da177e4 2366{
3aeea5b9 2367 struct cyclades_card *card = info->card;
02f1175c
JS		 2368 unsigned int result;
2369 unsigned long flags;
3aeea5b9 2370 u8 status;
1da177e4 2371
2693f485 2372 if (!cy_is_Z(card)) {
9fa1b3b1 2373 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2374 status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty);
9fa1b3b1 2375 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2376 result = (status ? 0 : TIOCSER_TEMT);
2377 } else {
2378 /* Not supported yet */
2379 return -EINVAL;
2380 }
dbca36ea 2381 return put_user(result, value);
1da177e4
LT		 2382}
2383
60b33c13 2384static int cy_tiocmget(struct tty_struct *tty)
1da177e4 2385{
cab9bdd1 2386 struct cyclades_port *info = tty->driver_data;
875b206b 2387 struct cyclades_card *card;
3aeea5b9 2388 int result;
02f1175c 2389
bf9d8929 2390 if (serial_paranoia_check(info, tty->name, __func__))
02f1175c 2391 return -ENODEV;
1da177e4 2392
02f1175c 2393 card = info->card;
0d348729 2394
2693f485 2395 if (!cy_is_Z(card)) {
0d348729 2396 unsigned long flags;
3aeea5b9
JS		 2397 int channel = info->line - card->first_line;
2398 u8 status;
1da177e4 2399
9fa1b3b1 2400 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 2401 cyy_writeb(info, CyCAR, channel & 0x03);
2402 status = cyy_readb(info, CyMSVR1);
2403 status |= cyy_readb(info, CyMSVR2);
9fa1b3b1 2404 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2405
2406 if (info->rtsdtr_inv) {
2407 result = ((status & CyRTS) ? TIOCM_DTR : 0) |
2408 ((status & CyDTR) ? TIOCM_RTS : 0);
2409 } else {
2410 result = ((status & CyRTS) ? TIOCM_RTS : 0) |
2411 ((status & CyDTR) ? TIOCM_DTR : 0);
2412 }
2413 result |= ((status & CyDCD) ? TIOCM_CAR : 0) |
2414 ((status & CyRI) ? TIOCM_RNG : 0) |
2415 ((status & CyDSR) ? TIOCM_DSR : 0) |
2416 ((status & CyCTS) ? TIOCM_CTS : 0);
1da177e4 2417 } else {
0d348729
JS		 2418 u32 lstatus;
2419
2420 if (!cyz_is_loaded(card)) {
2421 result = -ENODEV;
2422 goto end;
02f1175c 2423 }
1da177e4 2424
0d348729
JS		 2425 lstatus = readl(&info->u.cyz.ch_ctrl->rs_status);
2426 result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
2427 ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
2428 ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
2429 ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
2430 ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
2431 ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
02f1175c 2432 }
0d348729 2433end:
02f1175c
JS		 2434 return result;
2435} /* cy_tiomget */
1da177e4
LT		 2436
2437static int
20b9d177 2438cy_tiocmset(struct tty_struct *tty,
02f1175c 2439 unsigned int set, unsigned int clear)
1da177e4 2440{
cab9bdd1 2441 struct cyclades_port *info = tty->driver_data;
875b206b 2442 struct cyclades_card *card;
02f1175c 2443 unsigned long flags;
02f1175c 2444
bf9d8929 2445 if (serial_paranoia_check(info, tty->name, __func__))
02f1175c
JS		 2446 return -ENODEV;
2447
2448 card = info->card;
2693f485 2449 if (!cy_is_Z(card)) {
4d768200
JS		 2450 spin_lock_irqsave(&card->card_lock, flags);
2451 cyy_change_rts_dtr(info, set, clear);
2452 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2453 } else {
0d348729
JS		 2454 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
2455 int retval, channel = info->line - card->first_line;
2456 u32 rs;
2457
2458 if (!cyz_is_loaded(card))
2459 return -ENODEV;
2460
2461 spin_lock_irqsave(&card->card_lock, flags);
2462 rs = readl(&ch_ctrl->rs_control);
2463 if (set & TIOCM_RTS)
2464 rs |= C_RS_RTS;
2465 if (clear & TIOCM_RTS)
2466 rs &= ~C_RS_RTS;
2467 if (set & TIOCM_DTR) {
2468 rs |= C_RS_DTR;
1da177e4 2469#ifdef CY_DEBUG_DTR
0d348729 2470 printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n");
1da177e4 2471#endif
0d348729
JS		 2472 }
2473 if (clear & TIOCM_DTR) {
2474 rs &= ~C_RS_DTR;
1da177e4 2475#ifdef CY_DEBUG_DTR
0d348729
JS		 2476 printk(KERN_DEBUG "cyc:set_modem_info clearing "
2477 "Z DTR\n");
1da177e4 2478#endif
02f1175c 2479 }
0d348729 2480 cy_writel(&ch_ctrl->rs_control, rs);
9fa1b3b1 2481 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
0d348729 2482 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2483 if (retval != 0) {
21719191
JS		 2484 printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
2485 "was %x\n", info->line, retval);
02f1175c 2486 }
1da177e4 2487 }
02f1175c 2488 return 0;
0d348729 2489}
1da177e4
LT		 2490
2491/*
2492 * cy_break() --- routine which turns the break handling on or off
2493 */
9e98966c 2494static int cy_break(struct tty_struct *tty, int break_state)
1da177e4 2495{
cab9bdd1 2496 struct cyclades_port *info = tty->driver_data;
9fa1b3b1 2497 struct cyclades_card *card;
02f1175c 2498 unsigned long flags;
9e98966c 2499 int retval = 0;
1da177e4 2500
02f1175c 2501 if (serial_paranoia_check(info, tty->name, "cy_break"))
9e98966c 2502 return -EINVAL;
1da177e4 2503
9fa1b3b1
JS		 2504 card = info->card;
2505
2506 spin_lock_irqsave(&card->card_lock, flags);
2693f485 2507 if (!cy_is_Z(card)) {
02f1175c
JS		 2508 /* Let the transmit ISR take care of this (since it
2509 requires stuffing characters into the output stream).
2510 */
2511 if (break_state == -1) {
2512 if (!info->breakon) {
2513 info->breakon = 1;
2514 if (!info->xmit_cnt) {
9fa1b3b1 2515 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2516 start_xmit(info);
9fa1b3b1 2517 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 2518 }
2519 }
2520 } else {
2521 if (!info->breakoff) {
2522 info->breakoff = 1;
2523 if (!info->xmit_cnt) {
9fa1b3b1 2524 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2525 start_xmit(info);
9fa1b3b1 2526 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 2527 }
2528 }
1da177e4 2529 }
1da177e4 2530 } else {
02f1175c 2531 if (break_state == -1) {
9fa1b3b1
JS		 2532 retval = cyz_issue_cmd(card,
2533 info->line - card->first_line,
02f1175c
JS		 2534 C_CM_SET_BREAK, 0L);
2535 if (retval != 0) {
21719191
JS		 2536 printk(KERN_ERR "cyc:cy_break (set) retval on "
2537 "ttyC%d was %x\n", info->line, retval);
02f1175c
JS		 2538 }
2539 } else {
9fa1b3b1
JS		 2540 retval = cyz_issue_cmd(card,
2541 info->line - card->first_line,
02f1175c
JS		 2542 C_CM_CLR_BREAK, 0L);
2543 if (retval != 0) {
21719191
JS		 2544 printk(KERN_DEBUG "cyc:cy_break (clr) retval "
2545 "on ttyC%d was %x\n", info->line,
2546 retval);
02f1175c 2547 }
1da177e4 2548 }
1da177e4 2549 }
9fa1b3b1 2550 spin_unlock_irqrestore(&card->card_lock, flags);
9e98966c 2551 return retval;
02f1175c 2552} /* cy_break */
1da177e4 2553
02f1175c 2554static int set_threshold(struct cyclades_port *info, unsigned long value)
1da177e4 2555{
3aeea5b9 2556 struct cyclades_card *card = info->card;
02f1175c 2557 unsigned long flags;
1da177e4 2558
2693f485 2559 if (!cy_is_Z(card)) {
02f1175c
JS		 2560 info->cor3 &= ~CyREC_FIFO;
2561 info->cor3 |= value & CyREC_FIFO;
1da177e4 2562
9fa1b3b1 2563 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 2564 cyy_writeb(info, CyCOR3, info->cor3);
2565 cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch);
9fa1b3b1 2566 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2567 }
2568 return 0;
2569} /* set_threshold */
1da177e4 2570
15ed6cc0
AC		 2571static int get_threshold(struct cyclades_port *info,
2572 unsigned long __user *value)
1da177e4 2573{
3aeea5b9 2574 struct cyclades_card *card = info->card;
1da177e4 2575
2693f485 2576 if (!cy_is_Z(card)) {
3aeea5b9 2577 u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO;
02f1175c 2578 return put_user(tmp, value);
02f1175c 2579 }
f7429034 2580 return 0;
02f1175c 2581} /* get_threshold */
1da177e4 2582
02f1175c 2583static int set_timeout(struct cyclades_port *info, unsigned long value)
1da177e4 2584{
3aeea5b9 2585 struct cyclades_card *card = info->card;
02f1175c 2586 unsigned long flags;
1da177e4 2587
2693f485 2588 if (!cy_is_Z(card)) {
9fa1b3b1 2589 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2590 cyy_writeb(info, CyRTPR, value & 0xff);
9fa1b3b1 2591 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2592 }
2593 return 0;
2594} /* set_timeout */
1da177e4 2595
15ed6cc0
AC		 2596static int get_timeout(struct cyclades_port *info,
2597 unsigned long __user *value)
1da177e4 2598{
3aeea5b9 2599 struct cyclades_card *card = info->card;
1da177e4 2600
2693f485 2601 if (!cy_is_Z(card)) {
3aeea5b9 2602 u8 tmp = cyy_readb(info, CyRTPR);
02f1175c 2603 return put_user(tmp, value);
02f1175c 2604 }
f7429034 2605 return 0;
02f1175c 2606} /* get_timeout */
1da177e4 2607
6c28181c
JS		 2608static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg,
2609 struct cyclades_icount *cprev)
1da177e4 2610{
6c28181c
JS		 2611 struct cyclades_icount cnow;
2612 unsigned long flags;
2613 int ret;
1da177e4 2614
6c28181c
JS		 2615 spin_lock_irqsave(&info->card->card_lock, flags);
2616 cnow = info->icount; /* atomic copy */
2617 spin_unlock_irqrestore(&info->card->card_lock, flags);
2618
2619 ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
2620 ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
2621 ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) ||
2622 ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
2623
2624 *cprev = cnow;
2625
2626 return ret;
2627}
1da177e4
LT		 2628
2629/*
2630 * This routine allows the tty driver to implement device-
2631 * specific ioctl's. If the ioctl number passed in cmd is
2632 * not recognized by the driver, it should return ENOIOCTLCMD.
2633 */
2634static int
6caa76b7 2635cy_ioctl(struct tty_struct *tty,
02f1175c 2636 unsigned int cmd, unsigned long arg)
1da177e4 2637{
cab9bdd1 2638 struct cyclades_port *info = tty->driver_data;
6c28181c 2639 struct cyclades_icount cnow; /* kernel counter temps */
02f1175c
JS		 2640 int ret_val = 0;
2641 unsigned long flags;
2642 void __user *argp = (void __user *)arg;
2643
2644 if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
2645 return -ENODEV;
1da177e4
LT		 2646
2647#ifdef CY_DEBUG_OTHER
21719191
JS		 2648 printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
2649 info->line, cmd, arg);
1da177e4
LT		 2650#endif
2651
02f1175c
JS		 2652 switch (cmd) {
2653 case CYGETMON:
6c28181c
JS		 2654 if (copy_to_user(argp, &info->mon, sizeof(info->mon))) {
2655 ret_val = -EFAULT;
2656 break;
2657 }
2658 memset(&info->mon, 0, sizeof(info->mon));
02f1175c
JS		 2659 break;
2660 case CYGETTHRESH:
2661 ret_val = get_threshold(info, argp);
2662 break;
2663 case CYSETTHRESH:
2664 ret_val = set_threshold(info, arg);
2665 break;
2666 case CYGETDEFTHRESH:
6c28181c
JS		 2667 ret_val = put_user(info->default_threshold,
2668 (unsigned long __user *)argp);
02f1175c
JS		 2669 break;
2670 case CYSETDEFTHRESH:
6c28181c 2671 info->default_threshold = arg & 0x0f;
02f1175c
JS		 2672 break;
2673 case CYGETTIMEOUT:
2674 ret_val = get_timeout(info, argp);
2675 break;
2676 case CYSETTIMEOUT:
2677 ret_val = set_timeout(info, arg);
2678 break;
2679 case CYGETDEFTIMEOUT:
6c28181c
JS		 2680 ret_val = put_user(info->default_timeout,
2681 (unsigned long __user *)argp);
02f1175c
JS		 2682 break;
2683 case CYSETDEFTIMEOUT:
6c28181c 2684 info->default_timeout = arg & 0xff;
02f1175c 2685 break;
1da177e4 2686 case CYSETRFLOW:
02f1175c 2687 info->rflow = (int)arg;
02f1175c 2688 break;
1da177e4 2689 case CYGETRFLOW:
02f1175c
JS		 2690 ret_val = info->rflow;
2691 break;
1da177e4 2692 case CYSETRTSDTR_INV:
02f1175c 2693 info->rtsdtr_inv = (int)arg;
02f1175c 2694 break;
1da177e4 2695 case CYGETRTSDTR_INV:
02f1175c
JS		 2696 ret_val = info->rtsdtr_inv;
2697 break;
1da177e4 2698 case CYGETCD1400VER:
02f1175c
JS		 2699 ret_val = info->chip_rev;
2700 break;
1da177e4
LT		 2701#ifndef CONFIG_CYZ_INTR
2702 case CYZSETPOLLCYCLE:
351d6204
QX		 2703 if (arg > LONG_MAX / HZ)
2704 return -ENODEV;
02f1175c 2705 cyz_polling_cycle = (arg * HZ) / 1000;
02f1175c 2706 break;
1da177e4 2707 case CYZGETPOLLCYCLE:
02f1175c
JS		 2708 ret_val = (cyz_polling_cycle * 1000) / HZ;
2709 break;
2710#endif /* CONFIG_CYZ_INTR */
1da177e4 2711 case CYSETWAIT:
44b7d1b3 2712 info->port.closing_wait = (unsigned short)arg * HZ / 100;
02f1175c 2713 break;
1da177e4 2714 case CYGETWAIT:
44b7d1b3 2715 ret_val = info->port.closing_wait / (HZ / 100);
02f1175c
JS		 2716 break;
2717 case TIOCGSERIAL:
6c28181c 2718 ret_val = cy_get_serial_info(info, argp);
02f1175c
JS		 2719 break;
2720 case TIOCSSERIAL:
d13549f8 2721 ret_val = cy_set_serial_info(info, tty, argp);
02f1175c
JS		 2722 break;
2723 case TIOCSERGETLSR: /* Get line status register */
2724 ret_val = get_lsr_info(info, argp);
2725 break;
2726 /*
2727 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2728 * - mask passed in arg for lines of interest
2729 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2730 * Caller should use TIOCGICOUNT to see which one it was
2731 */
1da177e4 2732 case TIOCMIWAIT:
9fa1b3b1 2733 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 2734 /* note the counters on entry */
2c7fea99 2735 cnow = info->icount;
9fa1b3b1 2736 spin_unlock_irqrestore(&info->card->card_lock, flags);
bdc04e31 2737 ret_val = wait_event_interruptible(info->port.delta_msr_wait,
6c28181c 2738 cy_cflags_changed(info, arg, &cnow));
2c7fea99 2739 break;
1da177e4 2740
02f1175c
JS		 2741 /*
2742 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2743 * Return: write counters to the user passed counter struct
2744 * NB: both 1->0 and 0->1 transitions are counted except for
2745 * RI where only 0->1 is counted.
2746 */
02f1175c
JS		 2747 default:
2748 ret_val = -ENOIOCTLCMD;
2749 }
1da177e4
LT		 2750
2751#ifdef CY_DEBUG_OTHER
21719191 2752 printk(KERN_DEBUG "cyc:cy_ioctl done\n");
1da177e4 2753#endif
02f1175c
JS		 2754 return ret_val;
2755} /* cy_ioctl */
1da177e4 2756
0587102c
AC		 2757static int cy_get_icount(struct tty_struct *tty,
2758 struct serial_icounter_struct *sic)
2759{
2760 struct cyclades_port *info = tty->driver_data;
2761 struct cyclades_icount cnow; /* Used to snapshot */
2762 unsigned long flags;
2763
2764 spin_lock_irqsave(&info->card->card_lock, flags);
2765 cnow = info->icount;
2766 spin_unlock_irqrestore(&info->card->card_lock, flags);
2767
2768 sic->cts = cnow.cts;
2769 sic->dsr = cnow.dsr;
2770 sic->rng = cnow.rng;
2771 sic->dcd = cnow.dcd;
2772 sic->rx = cnow.rx;
2773 sic->tx = cnow.tx;
2774 sic->frame = cnow.frame;
2775 sic->overrun = cnow.overrun;
2776 sic->parity = cnow.parity;
2777 sic->brk = cnow.brk;
2778 sic->buf_overrun = cnow.buf_overrun;
2779 return 0;
2780}
2781
1da177e4
LT		 2782/*
2783 * This routine allows the tty driver to be notified when
2784 * device's termios settings have changed. Note that a
2785 * well-designed tty driver should be prepared to accept the case
2786 * where old == NULL, and try to do something rational.
2787 */
02f1175c 2788static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4 2789{
cab9bdd1 2790 struct cyclades_port *info = tty->driver_data;
1da177e4
LT		 2791
2792#ifdef CY_DEBUG_OTHER
21719191 2793 printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line);
1da177e4
LT		 2794#endif
2795
d13549f8 2796 cy_set_line_char(info, tty);
02f1175c 2797
9db276f8 2798 if ((old_termios->c_cflag & CRTSCTS) && !C_CRTSCTS(tty)) {
02f1175c
JS		 2799 tty->hw_stopped = 0;
2800 cy_start(tty);
2801 }
1da177e4 2802#if 0
02f1175c
JS		 2803 /*
2804 * No need to wake up processes in open wait, since they
2805 * sample the CLOCAL flag once, and don't recheck it.
2806 * XXX It's not clear whether the current behavior is correct
2807 * or not. Hence, this may change.....
2808 */
9db276f8 2809 if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty))
77451e53 2810 wake_up_interruptible(&info->port.open_wait);
1da177e4 2811#endif
02f1175c 2812} /* cy_set_termios */
1da177e4
LT		 2813
2814/* This function is used to send a high-priority XON/XOFF character to
2815 the device.
2816*/
02f1175c 2817static void cy_send_xchar(struct tty_struct *tty, char ch)
1da177e4 2818{
cab9bdd1 2819 struct cyclades_port *info = tty->driver_data;
875b206b
JS		 2820 struct cyclades_card *card;
2821 int channel;
1da177e4 2822
02f1175c 2823 if (serial_paranoia_check(info, tty->name, "cy_send_xchar"))
1da177e4
LT		 2824 return;
2825
02f1175c 2826 info->x_char = ch;
1da177e4
LT		 2827
2828 if (ch)
02f1175c 2829 cy_start(tty);
1da177e4
LT		 2830
2831 card = info->card;
875b206b 2832 channel = info->line - card->first_line;
1da177e4 2833
2693f485 2834 if (cy_is_Z(card)) {
02f1175c 2835 if (ch == STOP_CHAR(tty))
875b206b 2836 cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L);
02f1175c 2837 else if (ch == START_CHAR(tty))
875b206b 2838 cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L);
1da177e4
LT		 2839 }
2840}
2841
2842/* This routine is called by the upper-layer tty layer to signal
2843 that incoming characters should be throttled because the input
2844 buffers are close to full.
2845 */
02f1175c 2846static void cy_throttle(struct tty_struct *tty)
1da177e4 2847{
cab9bdd1 2848 struct cyclades_port *info = tty->driver_data;
875b206b 2849 struct cyclades_card *card;
02f1175c 2850 unsigned long flags;
1da177e4
LT		 2851
2852#ifdef CY_DEBUG_THROTTLE
fdfb719e
PH		 2853 printk(KERN_DEBUG "cyc:throttle %s ...ttyC%d\n", tty_name(tty),
2854 info->line);
1da177e4
LT		 2855#endif
2856
15ed6cc0 2857 if (serial_paranoia_check(info, tty->name, "cy_throttle"))
02f1175c 2858 return;
02f1175c
JS		 2859
2860 card = info->card;
2861
2862 if (I_IXOFF(tty)) {
2693f485 2863 if (!cy_is_Z(card))
02f1175c
JS		 2864 cy_send_xchar(tty, STOP_CHAR(tty));
2865 else
2866 info->throttle = 1;
2867 }
1da177e4 2868
9db276f8 2869 if (C_CRTSCTS(tty)) {
2693f485 2870 if (!cy_is_Z(card)) {
9fa1b3b1 2871 spin_lock_irqsave(&card->card_lock, flags);
4d768200 2872 cyy_change_rts_dtr(info, 0, TIOCM_RTS);
9fa1b3b1 2873 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2874 } else {
2875 info->throttle = 1;
2876 }
2877 }
02f1175c 2878} /* cy_throttle */
1da177e4
LT		 2879
2880/*
2881 * This routine notifies the tty driver that it should signal
2882 * that characters can now be sent to the tty without fear of
2883 * overrunning the input buffers of the line disciplines.
2884 */
02f1175c 2885static void cy_unthrottle(struct tty_struct *tty)
1da177e4 2886{
cab9bdd1 2887 struct cyclades_port *info = tty->driver_data;
875b206b 2888 struct cyclades_card *card;
02f1175c 2889 unsigned long flags;
1da177e4
LT		 2890
2891#ifdef CY_DEBUG_THROTTLE
fdfb719e
PH		 2892 printk(KERN_DEBUG "cyc:unthrottle %s ...ttyC%d\n",
2893 tty_name(tty), info->line);
1da177e4
LT		 2894#endif
2895
15ed6cc0 2896 if (serial_paranoia_check(info, tty->name, "cy_unthrottle"))
02f1175c 2897 return;
1da177e4 2898
02f1175c
JS		 2899 if (I_IXOFF(tty)) {
2900 if (info->x_char)
2901 info->x_char = 0;
2902 else
2903 cy_send_xchar(tty, START_CHAR(tty));
1da177e4 2904 }
1da177e4 2905
9db276f8 2906 if (C_CRTSCTS(tty)) {
02f1175c 2907 card = info->card;
2693f485 2908 if (!cy_is_Z(card)) {
9fa1b3b1 2909 spin_lock_irqsave(&card->card_lock, flags);
4d768200 2910 cyy_change_rts_dtr(info, TIOCM_RTS, 0);
9fa1b3b1 2911 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2912 } else {
2913 info->throttle = 0;
2914 }
2915 }
02f1175c 2916} /* cy_unthrottle */
1da177e4
LT		 2917
2918/* cy_start and cy_stop provide software output flow control as a
2919 function of XON/XOFF, software CTS, and other such stuff.
2920*/
02f1175c 2921static void cy_stop(struct tty_struct *tty)
1da177e4 2922{
02f1175c 2923 struct cyclades_card *cinfo;
cab9bdd1 2924 struct cyclades_port *info = tty->driver_data;
3aeea5b9 2925 int channel;
02f1175c 2926 unsigned long flags;
1da177e4
LT		 2927
2928#ifdef CY_DEBUG_OTHER
21719191 2929 printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line);
1da177e4
LT		 2930#endif
2931
02f1175c
JS		 2932 if (serial_paranoia_check(info, tty->name, "cy_stop"))
2933 return;
1da177e4 2934
875b206b 2935 cinfo = info->card;
02f1175c 2936 channel = info->line - cinfo->first_line;
2693f485 2937 if (!cy_is_Z(cinfo)) {
9fa1b3b1 2938 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 2939 cyy_writeb(info, CyCAR, channel & 0x03);
2940 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
9fa1b3b1 2941 spin_unlock_irqrestore(&cinfo->card_lock, flags);
02f1175c 2942 }
02f1175c 2943} /* cy_stop */
1da177e4 2944
02f1175c 2945static void cy_start(struct tty_struct *tty)
1da177e4 2946{
02f1175c 2947 struct cyclades_card *cinfo;
cab9bdd1 2948 struct cyclades_port *info = tty->driver_data;
3aeea5b9 2949 int channel;
02f1175c 2950 unsigned long flags;
1da177e4
LT		 2951
2952#ifdef CY_DEBUG_OTHER
21719191 2953 printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line);
1da177e4
LT		 2954#endif
2955
02f1175c
JS		 2956 if (serial_paranoia_check(info, tty->name, "cy_start"))
2957 return;
1da177e4 2958
875b206b 2959 cinfo = info->card;
02f1175c 2960 channel = info->line - cinfo->first_line;
2693f485 2961 if (!cy_is_Z(cinfo)) {
9fa1b3b1 2962 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 2963 cyy_writeb(info, CyCAR, channel & 0x03);
2964 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
9fa1b3b1 2965 spin_unlock_irqrestore(&cinfo->card_lock, flags);
02f1175c 2966 }
02f1175c 2967} /* cy_start */
1da177e4 2968
1da177e4
LT		 2969/*
2970 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
2971 */
02f1175c 2972static void cy_hangup(struct tty_struct *tty)
1da177e4 2973{
cab9bdd1 2974 struct cyclades_port *info = tty->driver_data;
02f1175c 2975
1da177e4 2976#ifdef CY_DEBUG_OTHER
21719191 2977 printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line);
1da177e4
LT		 2978#endif
2979
02f1175c
JS		 2980 if (serial_paranoia_check(info, tty->name, "cy_hangup"))
2981 return;
1da177e4 2982
02f1175c 2983 cy_flush_buffer(tty);
d13549f8 2984 cy_shutdown(info, tty);
174e6fe0 2985 tty_port_hangup(&info->port);
02f1175c 2986} /* cy_hangup */
1da177e4 2987
f0737579
JS		 2988static int cyy_carrier_raised(struct tty_port *port)
2989{
2990 struct cyclades_port *info = container_of(port, struct cyclades_port,
2991 port);
2992 struct cyclades_card *cinfo = info->card;
f0737579
JS		 2993 unsigned long flags;
2994 int channel = info->line - cinfo->first_line;
f0737579
JS		 2995 u32 cd;
2996
f0737579 2997 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 2998 cyy_writeb(info, CyCAR, channel & 0x03);
2999 cd = cyy_readb(info, CyMSVR1) & CyDCD;
f0737579
JS		 3000 spin_unlock_irqrestore(&cinfo->card_lock, flags);
3001
3002 return cd;
3003}
3004
3005static void cyy_dtr_rts(struct tty_port *port, int raise)
3006{
3007 struct cyclades_port *info = container_of(port, struct cyclades_port,
3008 port);
3009 struct cyclades_card *cinfo = info->card;
f0737579 3010 unsigned long flags;
f0737579
JS		 3011
3012 spin_lock_irqsave(&cinfo->card_lock, flags);
4d768200
JS		 3013 cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0,
3014 raise ? 0 : TIOCM_RTS | TIOCM_DTR);
f0737579
JS		 3015 spin_unlock_irqrestore(&cinfo->card_lock, flags);
3016}
3017
3018static int cyz_carrier_raised(struct tty_port *port)
3019{
3020 struct cyclades_port *info = container_of(port, struct cyclades_port,
3021 port);
f0737579 3022
f0eefdc3 3023 return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD;
f0737579
JS		 3024}
3025
3026static void cyz_dtr_rts(struct tty_port *port, int raise)
3027{
3028 struct cyclades_port *info = container_of(port, struct cyclades_port,
3029 port);
3030 struct cyclades_card *cinfo = info->card;
f0eefdc3 3031 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
f0737579
JS		 3032 int ret, channel = info->line - cinfo->first_line;
3033 u32 rs;
3034
f0eefdc3 3035 rs = readl(&ch_ctrl->rs_control);
f0737579
JS		 3036 if (raise)
3037 rs |= C_RS_RTS | C_RS_DTR;
3038 else
3039 rs &= ~(C_RS_RTS | C_RS_DTR);
f0eefdc3 3040 cy_writel(&ch_ctrl->rs_control, rs);
f0737579
JS		 3041 ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L);
3042 if (ret != 0)
3043 printk(KERN_ERR "%s: retval on ttyC%d was %x\n",
3044 __func__, info->line, ret);
3045#ifdef CY_DEBUG_DTR
3046 printk(KERN_DEBUG "%s: raising Z DTR\n", __func__);
3047#endif
3048}
3049
3050static const struct tty_port_operations cyy_port_ops = {
3051 .carrier_raised = cyy_carrier_raised,
3052 .dtr_rts = cyy_dtr_rts,
e936ffd5 3053 .shutdown = cy_do_close,
f0737579
JS		 3054};
3055
3056static const struct tty_port_operations cyz_port_ops = {
3057 .carrier_raised = cyz_carrier_raised,
3058 .dtr_rts = cyz_dtr_rts,
e936ffd5 3059 .shutdown = cy_do_close,
f0737579
JS		 3060};
3061
1da177e4
LT		 3062/*
3063 * ---------------------------------------------------------------------
3064 * cy_init() and friends
3065 *
3066 * cy_init() is called at boot-time to initialize the serial driver.
3067 * ---------------------------------------------------------------------
3068 */
3069
9671f099 3070static int cy_init_card(struct cyclades_card *cinfo)
0809e267
JS		 3071{
3072 struct cyclades_port *info;
f0eefdc3 3073 unsigned int channel, port;
0809e267 3074
3046d50e 3075 spin_lock_init(&cinfo->card_lock);
963118ee 3076 cinfo->intr_enabled = 0;
3046d50e 3077
963118ee
JS		 3078 cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports),
3079 GFP_KERNEL);
dd025c0c
JS		 3080 if (cinfo->ports == NULL) {
3081 printk(KERN_ERR "Cyclades: cannot allocate ports\n");
3082 return -ENOMEM;
3083 }
3084
f0eefdc3
JS		 3085 for (channel = 0, port = cinfo->first_line; channel < cinfo->nports;
3086 channel++, port++) {
3087 info = &cinfo->ports[channel];
44b7d1b3 3088 tty_port_init(&info->port);
3046d50e 3089 info->magic = CYCLADES_MAGIC;
875b206b 3090 info->card = cinfo;
3046d50e 3091 info->line = port;
3046d50e 3092
44b7d1b3
AC		 3093 info->port.closing_wait = CLOSING_WAIT_DELAY;
3094 info->port.close_delay = 5 * HZ / 10;
77451e53 3095 info->port.flags = STD_COM_FLAGS;
2c7fea99 3096 init_completion(&info->shutdown_wait);
3046d50e 3097
2693f485 3098 if (cy_is_Z(cinfo)) {
f0eefdc3
JS		 3099 struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS;
3100 struct ZFW_CTRL *zfw_ctrl;
3101
f0737579 3102 info->port.ops = &cyz_port_ops;
0809e267 3103 info->type = PORT_STARTECH;
f0eefdc3
JS		 3104
3105 zfw_ctrl = cinfo->base_addr +
3106 (readl(&firm_id->zfwctrl_addr) & 0xfffff);
3107 info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel];
3108 info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
3109
101b8159 3110 if (cinfo->hw_ver == ZO_V1)
0809e267
JS		 3111 info->xmit_fifo_size = CYZ_FIFO_SIZE;
3112 else
3046d50e 3113 info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
0809e267 3114#ifdef CONFIG_CYZ_INTR
3991428d
JS		 3115 setup_timer(&cyz_rx_full_timer[port],
3116 cyz_rx_restart, (unsigned long)info);
0809e267 3117#endif
3046d50e 3118 } else {
f0eefdc3 3119 unsigned short chip_number;
963118ee 3120 int index = cinfo->bus_index;
f0eefdc3 3121
f0737579 3122 info->port.ops = &cyy_port_ops;
0809e267 3123 info->type = PORT_CIRRUS;
0809e267 3124 info->xmit_fifo_size = CyMAX_CHAR_FIFO;
3046d50e 3125 info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
0809e267
JS		 3126 info->cor2 = CyETC;
3127 info->cor3 = 0x08; /* _very_ small rcv threshold */
3046d50e 3128
f0eefdc3 3129 chip_number = channel / CyPORTS_PER_CHIP;
3aeea5b9
JS		 3130 info->u.cyy.base_addr = cinfo->base_addr +
3131 (cy_chip_offset[chip_number] << index);
3132 info->chip_rev = cyy_readb(info, CyGFRCR);
15ed6cc0
AC		 3133
3134 if (info->chip_rev >= CD1400_REV_J) {
0809e267
JS		 3135 /* It is a CD1400 rev. J or later */
3136 info->tbpr = baud_bpr_60[13]; /* Tx BPR */
3137 info->tco = baud_co_60[13]; /* Tx CO */
3138 info->rbpr = baud_bpr_60[13]; /* Rx BPR */
3139 info->rco = baud_co_60[13]; /* Rx CO */
0809e267
JS		 3140 info->rtsdtr_inv = 1;
3141 } else {
3142 info->tbpr = baud_bpr_25[13]; /* Tx BPR */
3143 info->tco = baud_co_25[13]; /* Tx CO */
3144 info->rbpr = baud_bpr_25[13]; /* Rx BPR */
3145 info->rco = baud_co_25[13]; /* Rx CO */
0809e267
JS		 3146 info->rtsdtr_inv = 0;
3147 }
3046d50e
JS		 3148 info->read_status_mask = CyTIMEOUT | CySPECHAR |
3149 CyBREAK | CyPARITY | CyFRAME | CyOVERRUN;
0809e267 3150 }
3046d50e 3151
0809e267 3152 }
3046d50e
JS		 3153
3154#ifndef CONFIG_CYZ_INTR
2693f485 3155 if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) {
3046d50e
JS		 3156 mod_timer(&cyz_timerlist, jiffies + 1);
3157#ifdef CY_PCI_DEBUG
3158 printk(KERN_DEBUG "Cyclades-Z polling initialized\n");
3159#endif
3160 }
3161#endif
dd025c0c 3162 return 0;
0809e267
JS		 3163}
3164
1da177e4
LT		 3165/* initialize chips on Cyclom-Y card -- return number of valid
3166 chips (which is number of ports/4) */
9671f099 3167static unsigned short cyy_init_card(void __iomem *true_base_addr,
31b4f0a1 3168 int index)
1da177e4 3169{
02f1175c
JS		 3170 unsigned int chip_number;
3171 void __iomem *base_addr;
3172
3173 cy_writeb(true_base_addr + (Cy_HwReset << index), 0);
3174 /* Cy_HwReset is 0x1400 */
3175 cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0);
3176 /* Cy_ClrIntr is 0x1800 */
3177 udelay(500L);
3178
15ed6cc0
AC		 3179 for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD;
3180 chip_number++) {
02f1175c
JS		 3181 base_addr =
3182 true_base_addr + (cy_chip_offset[chip_number] << index);
3183 mdelay(1);
db05c3b1 3184 if (readb(base_addr + (CyCCR << index)) != 0x00) {
02f1175c
JS		 3185 /*************
3186 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
3187 chip_number, (unsigned long)base_addr);
3188 *************/
3189 return chip_number;
3190 }
3191
3192 cy_writeb(base_addr + (CyGFRCR << index), 0);
3193 udelay(10L);
3194
3195 /* The Cyclom-16Y does not decode address bit 9 and therefore
3196 cannot distinguish between references to chip 0 and a non-
3197 existent chip 4. If the preceding clearing of the supposed
3198 chip 4 GFRCR register appears at chip 0, there is no chip 4
3199 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
3200 */
db05c3b1 3201 if (chip_number == 4 && readb(true_base_addr +
02f1175c
JS		 3202 (cy_chip_offset[0] << index) +
3203 (CyGFRCR << index)) == 0) {
3204 return chip_number;
3205 }
3206
3207 cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET);
3208 mdelay(1);
3209
db05c3b1 3210 if (readb(base_addr + (CyGFRCR << index)) == 0x00) {
02f1175c
JS		 3211 /*
3212 printk(" chip #%d at %#6lx is not responding ",
3213 chip_number, (unsigned long)base_addr);
3214 printk("(GFRCR stayed 0)\n",
3215 */
3216 return chip_number;
3217 }
db05c3b1 3218 if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) !=
02f1175c
JS		 3219 0x40) {
3220 /*
3221 printk(" chip #%d at %#6lx is not valid (GFRCR == "
3222 "%#2x)\n",
3223 chip_number, (unsigned long)base_addr,
3224 base_addr[CyGFRCR<<index]);
3225 */
3226 return chip_number;
3227 }
3228 cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL);
db05c3b1 3229 if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) {
02f1175c
JS		 3230 /* It is a CD1400 rev. J or later */
3231 /* Impossible to reach 5ms with this chip.
3232 Changed to 2ms instead (f = 500 Hz). */
3233 cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS);
3234 } else {
3235 /* f = 200 Hz */
3236 cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS);
3237 }
1da177e4 3238
02f1175c
JS		 3239 /*
3240 printk(" chip #%d at %#6lx is rev 0x%2x\n",
3241 chip_number, (unsigned long)base_addr,
db05c3b1 3242 readb(base_addr+(CyGFRCR<<index)));
02f1175c
JS		 3243 */
3244 }
3245 return chip_number;
3246} /* cyy_init_card */
1da177e4
LT		 3247
3248/*
3249 * ---------------------------------------------------------------------
3250 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
3251 * sets global variables and return the number of ISA boards found.
3252 * ---------------------------------------------------------------------
3253 */
02f1175c 3254static int __init cy_detect_isa(void)
1da177e4
LT		 3255{
3256#ifdef CONFIG_ISA
718c4ca1 3257 struct cyclades_card *card;
02f1175c
JS		 3258 unsigned short cy_isa_irq, nboard;
3259 void __iomem *cy_isa_address;
734cc178 3260 unsigned short i, j, k, cy_isa_nchan;
02f1175c 3261 int isparam = 0;
1da177e4 3262
02f1175c 3263 nboard = 0;
1da177e4 3264
1da177e4 3265 /* Check for module parameters */
02f1175c
JS		 3266 for (i = 0; i < NR_CARDS; i++) {
3267 if (maddr[i] || i) {
3268 isparam = 1;
3269 cy_isa_addresses[i] = maddr[i];
3270 }
3271 if (!maddr[i])
3272 break;
1da177e4 3273 }
1da177e4 3274
02f1175c
JS		 3275 /* scan the address table probing for Cyclom-Y/ISA boards */
3276 for (i = 0; i < NR_ISA_ADDRS; i++) {
3277 unsigned int isa_address = cy_isa_addresses[i];
15ed6cc0 3278 if (isa_address == 0x0000)
096dcfce 3279 return nboard;
1da177e4 3280
02f1175c 3281 /* probe for CD1400... */
cd989b3a 3282 cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin);
3137553d
JS		 3283 if (cy_isa_address == NULL) {
3284 printk(KERN_ERR "Cyclom-Y/ISA: can't remap base "
3285 "address\n");
3286 continue;
3287 }
02f1175c
JS		 3288 cy_isa_nchan = CyPORTS_PER_CHIP *
3289 cyy_init_card(cy_isa_address, 0);
3290 if (cy_isa_nchan == 0) {
3137553d 3291 iounmap(cy_isa_address);
02f1175c
JS		 3292 continue;
3293 }
20904363 3294
196b3167 3295 if (isparam && i < NR_CARDS && irq[i])
02f1175c 3296 cy_isa_irq = irq[i];
1da177e4 3297 else
02f1175c
JS		 3298 /* find out the board's irq by probing */
3299 cy_isa_irq = detect_isa_irq(cy_isa_address);
3300 if (cy_isa_irq == 0) {
21719191
JS		 3301 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the "
3302 "IRQ could not be detected.\n",
02f1175c 3303 (unsigned long)cy_isa_address);
3137553d 3304 iounmap(cy_isa_address);
02f1175c
JS		 3305 continue;
3306 }
3307
3308 if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) {
21719191
JS		 3309 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
3310 "more channels are available. Change NR_PORTS "
3311 "in cyclades.c and recompile kernel.\n",
02f1175c 3312 (unsigned long)cy_isa_address);
3137553d 3313 iounmap(cy_isa_address);
096dcfce 3314 return nboard;
02f1175c
JS		 3315 }
3316 /* fill the next cy_card structure available */
3317 for (j = 0; j < NR_CARDS; j++) {
718c4ca1
JS		 3318 card = &cy_card[j];
3319 if (card->base_addr == NULL)
02f1175c
JS		 3320 break;
3321 }
3322 if (j == NR_CARDS) { /* no more cy_cards available */
21719191
JS		 3323 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
3324 "more cards can be used. Change NR_CARDS in "
3325 "cyclades.c and recompile kernel.\n",
02f1175c 3326 (unsigned long)cy_isa_address);
3137553d 3327 iounmap(cy_isa_address);
096dcfce 3328 return nboard;
02f1175c
JS		 3329 }
3330
3331 /* allocate IRQ */
3332 if (request_irq(cy_isa_irq, cyy_interrupt,
718c4ca1 3333 0, "Cyclom-Y", card)) {
21719191
JS		 3334 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
3335 "could not allocate IRQ#%d.\n",
3336 (unsigned long)cy_isa_address, cy_isa_irq);
3137553d 3337 iounmap(cy_isa_address);
096dcfce 3338 return nboard;
02f1175c
JS		 3339 }
3340
3341 /* set cy_card */
718c4ca1
JS		 3342 card->base_addr = cy_isa_address;
3343 card->ctl_addr.p9050 = NULL;
3344 card->irq = (int)cy_isa_irq;
3345 card->bus_index = 0;
3346 card->first_line = cy_next_channel;
3347 card->num_chips = cy_isa_nchan / CyPORTS_PER_CHIP;
3348 card->nports = cy_isa_nchan;
3349 if (cy_init_card(card)) {
3350 card->base_addr = NULL;
3351 free_irq(cy_isa_irq, card);
3137553d
JS		 3352 iounmap(cy_isa_address);
3353 continue;
3354 }
02f1175c
JS		 3355 nboard++;
3356
21719191
JS		 3357 printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: "
3358 "%d channels starting from port %d\n",
02f1175c
JS		 3359 j + 1, (unsigned long)cy_isa_address,
3360 (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
21719191
JS		 3361 cy_isa_irq, cy_isa_nchan, cy_next_channel);
3362
734cc178
JS		 3363 for (k = 0, j = cy_next_channel;
3364 j < cy_next_channel + cy_isa_nchan; j++, k++)
3365 tty_port_register_device(&card->ports[k].port,
3366 cy_serial_driver, j, NULL);
02f1175c
JS		 3367 cy_next_channel += cy_isa_nchan;
3368 }
096dcfce 3369 return nboard;
1da177e4 3370#else
096dcfce 3371 return 0;
02f1175c
JS		 3372#endif /* CONFIG_ISA */
3373} /* cy_detect_isa */
1da177e4 3374
58936d8d 3375#ifdef CONFIG_PCI
9671f099 3376static inline int cyc_isfwstr(const char *str, unsigned int size)
054f5b0a
JS		 3377{
3378 unsigned int a;
3379
3380 for (a = 0; a < size && *str; a++, str++)
3381 if (*str & 0x80)
3382 return -EINVAL;
3383
3384 for (; a < size; a++, str++)
3385 if (*str)
3386 return -EINVAL;
3387
3388 return 0;
3389}
3390
9671f099 3391static inline void cyz_fpga_copy(void __iomem *fpga, const u8 *data,
054f5b0a
JS		 3392 unsigned int size)
3393{
3394 for (; size > 0; size--) {
3395 cy_writel(fpga, *data++);
3396 udelay(10);
3397 }
3398}
3399
9671f099 3400static void plx_init(struct pci_dev *pdev, int irq,
054f5b0a 3401 struct RUNTIME_9060 __iomem *addr)
1da177e4 3402{
02f1175c 3403 /* Reset PLX */
054f5b0a 3404 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000);
02f1175c 3405 udelay(100L);
054f5b0a 3406 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000);
02f1175c
JS		 3407
3408 /* Reload Config. Registers from EEPROM */
054f5b0a 3409 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000);
02f1175c 3410 udelay(100L);
054f5b0a
JS		 3411 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000);
3412
3413 /* For some yet unknown reason, once the PLX9060 reloads the EEPROM,
3414 * the IRQ is lost and, thus, we have to re-write it to the PCI config.
3415 * registers. This will remain here until we find a permanent fix.
3416 */
3417 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
3418}
3419
9671f099 3420static int __cyz_load_fw(const struct firmware *fw,
054f5b0a
JS		 3421 const char *name, const u32 mailbox, void __iomem *base,
3422 void __iomem *fpga)
3423{
f61e761e
DW		 3424 const void *ptr = fw->data;
3425 const struct zfile_header *h = ptr;
3426 const struct zfile_config *c, *cs;
3427 const struct zfile_block *b, *bs;
054f5b0a
JS		 3428 unsigned int a, tmp, len = fw->size;
3429#define BAD_FW KERN_ERR "Bad firmware: "
3430 if (len < sizeof(*h)) {
3431 printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h));
3432 return -EINVAL;
3433 }
3434
3435 cs = ptr + h->config_offset;
3436 bs = ptr + h->block_offset;
3437
3438 if ((void *)(cs + h->n_config) > ptr + len ||
3439 (void *)(bs + h->n_blocks) > ptr + len) {
3440 printk(BAD_FW "too short");
3441 return -EINVAL;
3442 }
3443
3444 if (cyc_isfwstr(h->name, sizeof(h->name)) ||
3445 cyc_isfwstr(h->date, sizeof(h->date))) {
3446 printk(BAD_FW "bad formatted header string\n");
3447 return -EINVAL;
3448 }
3449
3450 if (strncmp(name, h->name, sizeof(h->name))) {
3451 printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name);
3452 return -EINVAL;
3453 }
3454
3455 tmp = 0;
3456 for (c = cs; c < cs + h->n_config; c++) {
3457 for (a = 0; a < c->n_blocks; a++)
3458 if (c->block_list[a] > h->n_blocks) {
3459 printk(BAD_FW "bad block ref number in cfgs\n");
3460 return -EINVAL;
3461 }
3462 if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */
3463 tmp++;
3464 }
3465 if (!tmp) {
3466 printk(BAD_FW "nothing appropriate\n");
3467 return -EINVAL;
3468 }
3469
3470 for (b = bs; b < bs + h->n_blocks; b++)
3471 if (b->file_offset + b->size > len) {
3472 printk(BAD_FW "bad block data offset\n");
3473 return -EINVAL;
3474 }
3475
3476 /* everything is OK, let's seek'n'load it */
3477 for (c = cs; c < cs + h->n_config; c++)
3478 if (c->mailbox == mailbox && c->function == 0)
3479 break;
3480
3481 for (a = 0; a < c->n_blocks; a++) {
3482 b = &bs[c->block_list[a]];
3483 if (b->type == ZBLOCK_FPGA) {
3484 if (fpga != NULL)
3485 cyz_fpga_copy(fpga, ptr + b->file_offset,
3486 b->size);
3487 } else {
3488 if (base != NULL)
3489 memcpy_toio(base + b->ram_offset,
3490 ptr + b->file_offset, b->size);
3491 }
3492 }
3493#undef BAD_FW
3494 return 0;
3495}
3496
9671f099 3497static int cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr,
054f5b0a
JS		 3498 struct RUNTIME_9060 __iomem *ctl_addr, int irq)
3499{
3500 const struct firmware *fw;
3501 struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS;
3502 struct CUSTOM_REG __iomem *cust = base_addr;
3503 struct ZFW_CTRL __iomem *pt_zfwctrl;
c4923b4f 3504 void __iomem *tmp;
963118ee 3505 u32 mailbox, status, nchan;
054f5b0a
JS		 3506 unsigned int i;
3507 int retval;
3508
3509 retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev);
3510 if (retval) {
3511 dev_err(&pdev->dev, "can't get firmware\n");
3512 goto err;
3513 }
3514
3515 /* Check whether the firmware is already loaded and running. If
3516 positive, skip this board */
2693f485 3517 if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) {
054f5b0a
JS		 3518 u32 cntval = readl(base_addr + 0x190);
3519
3520 udelay(100);
3521 if (cntval != readl(base_addr + 0x190)) {
3522 /* FW counter is working, FW is running */
3523 dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. "
3524 "Skipping board.\n");
3525 retval = 0;
3526 goto err_rel;
3527 }
3528 }
3529
3530 /* start boot */
3531 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) &
3532 ~0x00030800UL);
3533
3534 mailbox = readl(&ctl_addr->mail_box_0);
3535
2693f485 3536 if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) {
054f5b0a
JS		 3537 /* stops CPU and set window to beginning of RAM */
3538 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3539 cy_writel(&cust->cpu_stop, 0);
3540 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3541 udelay(100);
3542 }
3543
3544 plx_init(pdev, irq, ctl_addr);
3545
3546 if (mailbox != 0) {
3547 /* load FPGA */
3548 retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL,
3549 base_addr);
3550 if (retval)
3551 goto err_rel;
2693f485 3552 if (!__cyz_fpga_loaded(ctl_addr)) {
054f5b0a
JS		 3553 dev_err(&pdev->dev, "fw upload successful, but fw is "
3554 "not loaded\n");
3555 goto err_rel;
3556 }
3557 }
3558
3559 /* stops CPU and set window to beginning of RAM */
3560 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3561 cy_writel(&cust->cpu_stop, 0);
3562 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3563 udelay(100);
3564
3565 /* clear memory */
c4923b4f 3566 for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
054f5b0a
JS		 3567 cy_writeb(tmp, 255);
3568 if (mailbox != 0) {
3569 /* set window to last 512K of RAM */
3570 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE);
c4923b4f 3571 for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
054f5b0a
JS		 3572 cy_writeb(tmp, 255);
3573 /* set window to beginning of RAM */
3574 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
054f5b0a
JS		 3575 }
3576
3577 retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL);
3578 release_firmware(fw);
3579 if (retval)
3580 goto err;
3581
3582 /* finish boot and start boards */
3583 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3584 cy_writel(&cust->cpu_start, 0);
3585 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3586 i = 0;
3587 while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40)
3588 msleep(100);
3589 if (status != ZFIRM_ID) {
3590 if (status == ZFIRM_HLT) {
3591 dev_err(&pdev->dev, "you need an external power supply "
3592 "for this number of ports. Firmware halted and "
3593 "board reset.\n");
3594 retval = -EIO;
3595 goto err;
3596 }
3597 dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting "
3598 "some more time\n", status);
3599 while ((status = readl(&fid->signature)) != ZFIRM_ID &&
3600 i++ < 200)
3601 msleep(100);
3602 if (status != ZFIRM_ID) {
3603 dev_err(&pdev->dev, "Board not started in 20 seconds! "
3604 "Giving up. (fid->signature = 0x%x)\n",
3605 status);
3606 dev_info(&pdev->dev, "*** Warning ***: if you are "
3607 "upgrading the FW, please power cycle the "
3608 "system before loading the new FW to the "
3609 "Cyclades-Z.\n");
3610
2693f485 3611 if (__cyz_fpga_loaded(ctl_addr))
054f5b0a
JS		 3612 plx_init(pdev, irq, ctl_addr);
3613
3614 retval = -EIO;
3615 goto err;
3616 }
3617 dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n",
3618 i / 10);
3619 }
3620 pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr);
3621
3622 dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n",
3623 base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr),
3624 base_addr + readl(&fid->zfwctrl_addr));
3625
963118ee 3626 nchan = readl(&pt_zfwctrl->board_ctrl.n_channel);
054f5b0a 3627 dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n",
963118ee 3628 readl(&pt_zfwctrl->board_ctrl.fw_version), nchan);
054f5b0a 3629
963118ee 3630 if (nchan == 0) {
054f5b0a
JS		 3631 dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please "
3632 "check the connection between the Z host card and the "
3633 "serial expanders.\n");
3634
2693f485 3635 if (__cyz_fpga_loaded(ctl_addr))
054f5b0a
JS		 3636 plx_init(pdev, irq, ctl_addr);
3637
3638 dev_info(&pdev->dev, "Null number of ports detected. Board "
3639 "reset.\n");
3640 retval = 0;
3641 goto err;
3642 }
3643
3644 cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX);
3645 cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION);
3646
3647 /*
3648 Early firmware failed to start looking for commands.
3649 This enables firmware interrupts for those commands.
3650 */
3651 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
3652 (1 << 17));
3653 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
3654 0x00030800UL);
3655
963118ee 3656 return nchan;
054f5b0a
JS		 3657err_rel:
3658 release_firmware(fw);
3659err:
3660 return retval;
1da177e4
LT		 3661}
3662
9671f099 3663static int cy_pci_probe(struct pci_dev *pdev,
58936d8d 3664 const struct pci_device_id *ent)
1da177e4 3665{
718c4ca1 3666 struct cyclades_card *card;
3137553d
JS		 3667 void __iomem *addr0 = NULL, *addr2 = NULL;
3668 char *card_name = NULL;
101b8159 3669 u32 uninitialized_var(mailbox);
734cc178 3670 unsigned int device_id, nchan = 0, card_no, i, j;
3137553d
JS		 3671 unsigned char plx_ver;
3672 int retval, irq;
02f1175c 3673
58936d8d
JS		 3674 retval = pci_enable_device(pdev);
3675 if (retval) {
3676 dev_err(&pdev->dev, "cannot enable device\n");
3137553d 3677 goto err;
58936d8d 3678 }
1da177e4 3679
58936d8d 3680 /* read PCI configuration area */
3137553d 3681 irq = pdev->irq;
58936d8d 3682 device_id = pdev->device & ~PCI_DEVICE_ID_MASK;
1da177e4 3683
3137553d
JS		 3684#if defined(__alpha__)
3685 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
3686 dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low "
3687 "addresses on Alpha systems.\n");
3688 retval = -EIO;
3689 goto err_dis;
3690 }
3691#endif
3692 if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
3693 dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low "
3694 "addresses\n");
3695 retval = -EIO;
3696 goto err_dis;
3697 }
3698
3699 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
3700 dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring "
3701 "it...\n");
3702 pdev->resource[2].flags &= ~IORESOURCE_IO;
3703 }
3704
3705 retval = pci_request_regions(pdev, "cyclades");
3706 if (retval) {
3707 dev_err(&pdev->dev, "failed to reserve resources\n");
3708 goto err_dis;
3709 }
3710
3711 retval = -EIO;
58936d8d
JS		 3712 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3713 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3137553d 3714 card_name = "Cyclom-Y";
1da177e4 3715
24e6fd4c
JS		 3716 addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
3717 CyPCI_Yctl);
3137553d
JS		 3718 if (addr0 == NULL) {
3719 dev_err(&pdev->dev, "can't remap ctl region\n");
3720 goto err_reg;
58936d8d 3721 }
24e6fd4c
JS		 3722 addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
3723 CyPCI_Ywin);
3137553d
JS		 3724 if (addr2 == NULL) {
3725 dev_err(&pdev->dev, "can't remap base region\n");
3726 goto err_unmap;
58936d8d 3727 }
1da177e4 3728
3137553d
JS		 3729 nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1);
3730 if (nchan == 0) {
21719191
JS		 3731 dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
3732 "Serial-Modules\n");
c847d47c 3733 goto err_unmap;
58936d8d 3734 }
58936d8d 3735 } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
3137553d 3736 struct RUNTIME_9060 __iomem *ctl_addr;
21719191 3737
24e6fd4c
JS		 3738 ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
3739 CyPCI_Zctl);
3137553d
JS		 3740 if (addr0 == NULL) {
3741 dev_err(&pdev->dev, "can't remap ctl region\n");
3742 goto err_reg;
3743 }
58936d8d
JS		 3744
3745 /* Disable interrupts on the PLX before resetting it */
97e87f8e
JS		 3746 cy_writew(&ctl_addr->intr_ctrl_stat,
3747 readw(&ctl_addr->intr_ctrl_stat) & ~0x0900);
58936d8d 3748
054f5b0a 3749 plx_init(pdev, irq, addr0);
02f1175c 3750
101b8159 3751 mailbox = readl(&ctl_addr->mail_box_0);
58936d8d 3752
24e6fd4c
JS		 3753 addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
3754 mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin);
3137553d
JS		 3755 if (addr2 == NULL) {
3756 dev_err(&pdev->dev, "can't remap base region\n");
3757 goto err_unmap;
58936d8d
JS		 3758 }
3759
3760 if (mailbox == ZE_V1) {
3137553d 3761 card_name = "Cyclades-Ze";
58936d8d 3762 } else {
3137553d 3763 card_name = "Cyclades-8Zo";
1da177e4 3764#ifdef CY_PCI_DEBUG
3137553d
JS		 3765 if (mailbox == ZO_V1) {
3766 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3767 dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA "
3768 "id %lx, ver %lx\n", (ulong)(0xff &
3769 readl(&((struct CUSTOM_REG *)addr2)->
3770 fpga_id)), (ulong)(0xff &
3771 readl(&((struct CUSTOM_REG *)addr2)->
3772 fpga_version)));
3773 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3774 } else {
3775 dev_info(&pdev->dev, "Cyclades-Z/PCI: New "
3776 "Cyclades-Z board. FPGA not loaded\n");
3777 }
1da177e4 3778#endif
3137553d
JS		 3779 /* The following clears the firmware id word. This
3780 ensures that the driver will not attempt to talk to
3781 the board until it has been properly initialized.
3782 */
3783 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
3784 cy_writel(addr2 + ID_ADDRESS, 0L);
58936d8d 3785 }
ace08c3c
JS		 3786
3787 retval = cyz_load_fw(pdev, addr2, addr0, irq);
963118ee 3788 if (retval <= 0)
ace08c3c 3789 goto err_unmap;
963118ee 3790 nchan = retval;
3137553d
JS		 3791 }
3792
3793 if ((cy_next_channel + nchan) > NR_PORTS) {
3794 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
3795 "channels are available. Change NR_PORTS in "
3796 "cyclades.c and recompile kernel.\n");
3797 goto err_unmap;
3798 }
3799 /* fill the next cy_card structure available */
3800 for (card_no = 0; card_no < NR_CARDS; card_no++) {
718c4ca1
JS		 3801 card = &cy_card[card_no];
3802 if (card->base_addr == NULL)
3137553d
JS		 3803 break;
3804 }
3805 if (card_no == NR_CARDS) { /* no more cy_cards available */
3806 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
3807 "more cards can be used. Change NR_CARDS in "
3808 "cyclades.c and recompile kernel.\n");
3809 goto err_unmap;
3810 }
3811
3812 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3813 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3814 /* allocate IRQ */
3815 retval = request_irq(irq, cyy_interrupt,
718c4ca1 3816 IRQF_SHARED, "Cyclom-Y", card);
3137553d
JS		 3817 if (retval) {
3818 dev_err(&pdev->dev, "could not allocate IRQ\n");
3819 goto err_unmap;
58936d8d 3820 }
718c4ca1 3821 card->num_chips = nchan / CyPORTS_PER_CHIP;
3137553d 3822 } else {
f0eefdc3
JS		 3823 struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
3824 struct ZFW_CTRL __iomem *zfw_ctrl;
3825
3826 zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
3827
718c4ca1
JS		 3828 card->hw_ver = mailbox;
3829 card->num_chips = (unsigned int)-1;
3830 card->board_ctrl = &zfw_ctrl->board_ctrl;
02f1175c 3831#ifdef CONFIG_CYZ_INTR
58936d8d 3832 /* allocate IRQ only if board has an IRQ */
3137553d
JS		 3833 if (irq != 0 && irq != 255) {
3834 retval = request_irq(irq, cyz_interrupt,
718c4ca1 3835 IRQF_SHARED, "Cyclades-Z", card);
58936d8d 3836 if (retval) {
21719191 3837 dev_err(&pdev->dev, "could not allocate IRQ\n");
3137553d 3838 goto err_unmap;
02f1175c 3839 }
58936d8d 3840 }
02f1175c 3841#endif /* CONFIG_CYZ_INTR */
3137553d 3842 }
02f1175c 3843
3137553d 3844 /* set cy_card */
718c4ca1
JS		 3845 card->base_addr = addr2;
3846 card->ctl_addr.p9050 = addr0;
3847 card->irq = irq;
3848 card->bus_index = 1;
3849 card->first_line = cy_next_channel;
3850 card->nports = nchan;
3851 retval = cy_init_card(card);
3137553d
JS		 3852 if (retval)
3853 goto err_null;
58936d8d 3854
718c4ca1 3855 pci_set_drvdata(pdev, card);
58936d8d 3856
3137553d
JS		 3857 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3858 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3859 /* enable interrupts in the PCI interface */
3860 plx_ver = readb(addr2 + CyPLX_VER) & 0x0f;
3861 switch (plx_ver) {
3862 case PLX_9050:
3137553d
JS		 3863 cy_writeb(addr0 + 0x4c, 0x43);
3864 break;
3865
3866 case PLX_9060:
3867 case PLX_9080:
3868 default: /* Old boards, use PLX_9060 */
97e87f8e
JS		 3869 {
3870 struct RUNTIME_9060 __iomem *ctl_addr = addr0;
3871 plx_init(pdev, irq, ctl_addr);
3872 cy_writew(&ctl_addr->intr_ctrl_stat,
3873 readw(&ctl_addr->intr_ctrl_stat) | 0x0900);
3137553d
JS		 3874 break;
3875 }
97e87f8e 3876 }
58936d8d
JS		 3877 }
3878
3137553d
JS		 3879 dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from "
3880 "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel);
734cc178
JS		 3881 for (j = 0, i = cy_next_channel; i < cy_next_channel + nchan; i++, j++)
3882 tty_port_register_device(&card->ports[j].port,
3883 cy_serial_driver, i, &pdev->dev);
3137553d
JS		 3884 cy_next_channel += nchan;
3885
58936d8d 3886 return 0;
3137553d 3887err_null:
718c4ca1
JS		 3888 card->base_addr = NULL;
3889 free_irq(irq, card);
3137553d 3890err_unmap:
24e6fd4c 3891 iounmap(addr0);
3137553d 3892 if (addr2)
24e6fd4c 3893 iounmap(addr2);
3137553d
JS		 3894err_reg:
3895 pci_release_regions(pdev);
3896err_dis:
3897 pci_disable_device(pdev);
3898err:
3899 return retval;
58936d8d 3900}
58936d8d 3901
ae8d8a14 3902static void cy_pci_remove(struct pci_dev *pdev)
58936d8d 3903{
38d09093 3904 struct cyclades_card *cinfo = pci_get_drvdata(pdev);
191c5f10 3905 unsigned int i, channel;
38d09093 3906
85c93fa9 3907 /* non-Z with old PLX */
2693f485 3908 if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) ==
c2ad4c75 3909 PLX_9050)
97e87f8e 3910 cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0);
85c93fa9
JS		 3911 else
3912#ifndef CONFIG_CYZ_INTR
2693f485 3913 if (!cy_is_Z(cinfo))
85c93fa9 3914#endif
97e87f8e
JS		 3915 cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat,
3916 readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) &
3917 ~0x0900);
85c93fa9 3918
24e6fd4c 3919 iounmap(cinfo->base_addr);
97e87f8e
JS		 3920 if (cinfo->ctl_addr.p9050)
3921 iounmap(cinfo->ctl_addr.p9050);
38d09093
JS		 3922 if (cinfo->irq
3923#ifndef CONFIG_CYZ_INTR
2693f485 3924 && !cy_is_Z(cinfo)
38d09093
JS		 3925#endif /* CONFIG_CYZ_INTR */
3926 )
3927 free_irq(cinfo->irq, cinfo);
3928 pci_release_regions(pdev);
3929
3930 cinfo->base_addr = NULL;
191c5f10
JS		 3931 for (channel = 0, i = cinfo->first_line; i < cinfo->first_line +
3932 cinfo->nports; i++, channel++) {
6ad1ccc1 3933 tty_unregister_device(cy_serial_driver, i);
191c5f10
JS		 3934 tty_port_destroy(&cinfo->ports[channel].port);
3935 }
dd025c0c
JS		 3936 cinfo->nports = 0;
3937 kfree(cinfo->ports);
38d09093
JS		 3938}
3939
6747cd93
JS		 3940static struct pci_driver cy_pci_driver = {
3941 .name = "cyclades",
3942 .id_table = cy_pci_dev_id,
3943 .probe = cy_pci_probe,
91116cba 3944 .remove = cy_pci_remove
6747cd93
JS		 3945};
3946#endif
3947
444697d6 3948static int cyclades_proc_show(struct seq_file *m, void *v)
1da177e4 3949{
02f1175c 3950 struct cyclades_port *info;
dd025c0c 3951 unsigned int i, j;
02f1175c
JS		 3952 __u32 cur_jifs = jiffies;
3953
444697d6 3954 seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn "
02f1175c
JS		 3955 "IdleIn Overruns Ldisc\n");
3956
02f1175c 3957 /* Output one line for each known port */
dd025c0c
JS		 3958 for (i = 0; i < NR_CARDS; i++)
3959 for (j = 0; j < cy_card[i].nports; j++) {
3960 info = &cy_card[i].ports[j];
3961
d13549f8
JS		 3962 if (info->port.count) {
3963 /* XXX is the ldisc num worth this? */
3964 struct tty_struct *tty;
3965 struct tty_ldisc *ld;
3966 int num = 0;
3967 tty = tty_port_tty_get(&info->port);
3968 if (tty) {
3969 ld = tty_ldisc_ref(tty);
3970 if (ld) {
3971 num = ld->ops->num;
3972 tty_ldisc_deref(ld);
3973 }
3974 tty_kref_put(tty);
3975 }
444697d6 3976 seq_printf(m, "%3d %8lu %10lu %8lu "
d13549f8 3977 "%10lu %8lu %9lu %6d\n", info->line,
dd025c0c
JS		 3978 (cur_jifs - info->idle_stats.in_use) /
3979 HZ, info->idle_stats.xmit_bytes,
3980 (cur_jifs - info->idle_stats.xmit_idle)/
3981 HZ, info->idle_stats.recv_bytes,
3982 (cur_jifs - info->idle_stats.recv_idle)/
3983 HZ, info->idle_stats.overruns,
d13549f8
JS		 3984 num);
3985 } else
444697d6 3986 seq_printf(m, "%3d %8lu %10lu %8lu "
dd025c0c
JS		 3987 "%10lu %8lu %9lu %6ld\n",
3988 info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
02f1175c 3989 }
444697d6
AD		 3990 return 0;
3991}
3992
3993static int cyclades_proc_open(struct inode *inode, struct file *file)
3994{
3995 return single_open(file, cyclades_proc_show, NULL);
1da177e4
LT		 3996}
3997
444697d6
AD		 3998static const struct file_operations cyclades_proc_fops = {
3999 .owner = THIS_MODULE,
4000 .open = cyclades_proc_open,
4001 .read = seq_read,
4002 .llseek = seq_lseek,
4003 .release = single_release,
4004};
4005
1da177e4
LT		 4006/* The serial driver boot-time initialization code!
4007 Hardware I/O ports are mapped to character special devices on a
4008 first found, first allocated manner. That is, this code searches
4009 for Cyclom cards in the system. As each is found, it is probed
4010 to discover how many chips (and thus how many ports) are present.
4011 These ports are mapped to the tty ports 32 and upward in monotonic
4012 fashion. If an 8-port card is replaced with a 16-port card, the
4013 port mapping on a following card will shift.
4014
4015 This approach is different from what is used in the other serial
4016 device driver because the Cyclom is more properly a multiplexer,
4017 not just an aggregation of serial ports on one card.
4018
4019 If there are more cards with more ports than have been
4020 statically allocated above, a warning is printed and the
4021 extra ports are ignored.
4022 */
4023
b68e31d0 4024static const struct tty_operations cy_ops = {
02f1175c
JS		 4025 .open = cy_open,
4026 .close = cy_close,
4027 .write = cy_write,
4028 .put_char = cy_put_char,
4029 .flush_chars = cy_flush_chars,
4030 .write_room = cy_write_room,
4031 .chars_in_buffer = cy_chars_in_buffer,
4032 .flush_buffer = cy_flush_buffer,
4033 .ioctl = cy_ioctl,
4034 .throttle = cy_throttle,
4035 .unthrottle = cy_unthrottle,
4036 .set_termios = cy_set_termios,
4037 .stop = cy_stop,
4038 .start = cy_start,
4039 .hangup = cy_hangup,
4040 .break_ctl = cy_break,
4041 .wait_until_sent = cy_wait_until_sent,
02f1175c
JS		 4042 .tiocmget = cy_tiocmget,
4043 .tiocmset = cy_tiocmset,
0587102c 4044 .get_icount = cy_get_icount,
444697d6 4045 .proc_fops = &cyclades_proc_fops,
1da177e4
LT		 4046};
4047
02f1175c 4048static int __init cy_init(void)
1da177e4 4049{
dd025c0c 4050 unsigned int nboards;
9dacf3b2 4051 int retval = -ENOMEM;
02f1175c
JS		 4052
4053 cy_serial_driver = alloc_tty_driver(NR_PORTS);
4054 if (!cy_serial_driver)
9dacf3b2 4055 goto err;
21719191 4056
64a14b51 4057 printk(KERN_INFO "Cyclades driver " CY_VERSION "\n");
02f1175c
JS		 4058
4059 /* Initialize the tty_driver structure */
4060
02f1175c
JS		 4061 cy_serial_driver->driver_name = "cyclades";
4062 cy_serial_driver->name = "ttyC";
4063 cy_serial_driver->major = CYCLADES_MAJOR;
4064 cy_serial_driver->minor_start = 0;
4065 cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
4066 cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
4067 cy_serial_driver->init_termios = tty_std_termios;
4068 cy_serial_driver->init_termios.c_cflag =
4069 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
6ad1ccc1 4070 cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
02f1175c
JS		 4071 tty_set_operations(cy_serial_driver, &cy_ops);
4072
9dacf3b2
JS		 4073 retval = tty_register_driver(cy_serial_driver);
4074 if (retval) {
4075 printk(KERN_ERR "Couldn't register Cyclades serial driver\n");
4076 goto err_frtty;
4077 }
02f1175c 4078
02f1175c
JS		 4079 /* the code below is responsible to find the boards. Each different
4080 type of board has its own detection routine. If a board is found,
4081 the next cy_card structure available is set by the detection
4082 routine. These functions are responsible for checking the
4083 availability of cy_card and cy_port data structures and updating
4084 the cy_next_channel. */
4085
4086 /* look for isa boards */
14a55a67 4087 nboards = cy_detect_isa();
02f1175c 4088
6747cd93 4089#ifdef CONFIG_PCI
02f1175c 4090 /* look for pci boards */
6747cd93 4091 retval = pci_register_driver(&cy_pci_driver);
d941ea7d
JJ		 4092 if (retval && !nboards) {
4093 tty_unregister_driver(cy_serial_driver);
4094 goto err_frtty;
4095 }
6747cd93 4096#endif
9dacf3b2
JS		 4097
4098 return 0;
9dacf3b2
JS		 4099err_frtty:
4100 put_tty_driver(cy_serial_driver);
4101err:
4102 return retval;
02f1175c 4103} /* cy_init */
1da177e4 4104
02f1175c 4105static void __exit cy_cleanup_module(void)
1da177e4 4106{
dd025c0c 4107 struct cyclades_card *card;
65f76a82 4108 unsigned int i, e1;
1da177e4
LT		 4109
4110#ifndef CONFIG_CYZ_INTR
b7050906 4111 del_timer_sync(&cyz_timerlist);
1da177e4
LT		 4112#endif /* CONFIG_CYZ_INTR */
4113
15ed6cc0
AC		 4114 e1 = tty_unregister_driver(cy_serial_driver);
4115 if (e1)
21719191
JS		 4116 printk(KERN_ERR "failed to unregister Cyclades serial "
4117 "driver(%d)\n", e1);
1da177e4 4118
6747cd93
JS		 4119#ifdef CONFIG_PCI
4120 pci_unregister_driver(&cy_pci_driver);
4121#endif
4122
02f1175c 4123 for (i = 0; i < NR_CARDS; i++) {
dd025c0c
JS		 4124 card = &cy_card[i];
4125 if (card->base_addr) {
85c93fa9 4126 /* clear interrupt */
dd025c0c
JS		 4127 cy_writeb(card->base_addr + Cy_ClrIntr, 0);
4128 iounmap(card->base_addr);
97e87f8e
JS		 4129 if (card->ctl_addr.p9050)
4130 iounmap(card->ctl_addr.p9050);
dd025c0c 4131 if (card->irq
1da177e4 4132#ifndef CONFIG_CYZ_INTR
2693f485 4133 && !cy_is_Z(card)
1da177e4 4134#endif /* CONFIG_CYZ_INTR */
02f1175c 4135 )
dd025c0c 4136 free_irq(card->irq, card);
65f76a82 4137 for (e1 = card->first_line; e1 < card->first_line +
dd025c0c 4138 card->nports; e1++)
6ad1ccc1 4139 tty_unregister_device(cy_serial_driver, e1);
dd025c0c 4140 kfree(card->ports);
02f1175c
JS		 4141 }
4142 }
f2462bfe
JS		 4143
4144 put_tty_driver(cy_serial_driver);
1da177e4
LT		 4145} /* cy_cleanup_module */
4146
4147module_init(cy_init);
4148module_exit(cy_cleanup_module);
4149
4150MODULE_LICENSE("GPL");
c8e1693a 4151MODULE_VERSION(CY_VERSION);
9f56fad7 4152MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR);
e6c4ef98 4153MODULE_FIRMWARE("cyzfirm.bin");
Linux kernel - Deliverables
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