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serial: sh-sci: fix compilation breakage, when DMA is enabled
[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
3aeea5b9
JS		 295static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
296{
297 struct cyclades_card *card = port->card;
298
299 cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
300}
301
302static inline u8 cyy_readb(struct cyclades_port *port, u32 reg)
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
324static inline bool cyz_is_loaded(struct cyclades_card *card)
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
02f1175c 332static inline 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;
444 struct tty_struct *tty;
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];
3aeea5b9
JS		 455 save_car = cyy_readb(info, CyCAR);
456 cyy_writeb(info, CyCAR, save_xir);
457 ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
ce97a097 458
d13549f8 459 tty = tty_port_tty_get(&info->port);
ce97a097 460 /* if there is nowhere to put the data, discard it */
d13549f8 461 if (tty == NULL) {
3aeea5b9
JS		 462 if (ivr == CyIVRRxEx) { /* exception */
463 data = cyy_readb(info, CyRDSR);
ce97a097 464 } else { /* normal character reception */
3aeea5b9 465 char_count = cyy_readb(info, CyRDCR);
ce97a097 466 while (char_count--)
3aeea5b9 467 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 468 }
469 goto end;
470 }
471 /* there is an open port for this data */
3aeea5b9
JS		 472 if (ivr == CyIVRRxEx) { /* exception */
473 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 474
475 /* For statistics only */
476 if (data & CyBREAK)
477 info->icount.brk++;
478 else if (data & CyFRAME)
479 info->icount.frame++;
480 else if (data & CyPARITY)
481 info->icount.parity++;
482 else if (data & CyOVERRUN)
483 info->icount.overrun++;
484
485 if (data & info->ignore_status_mask) {
486 info->icount.rx++;
d13549f8 487 tty_kref_put(tty);
ce97a097
JS		 488 return;
489 }
490 if (tty_buffer_request_room(tty, 1)) {
491 if (data & info->read_status_mask) {
492 if (data & CyBREAK) {
493 tty_insert_flip_char(tty,
3aeea5b9
JS		 494 cyy_readb(info, CyRDSR),
495 TTY_BREAK);
ce97a097 496 info->icount.rx++;
77451e53 497 if (info->port.flags & ASYNC_SAK)
ce97a097
JS		 498 do_SAK(tty);
499 } else if (data & CyFRAME) {
15ed6cc0 500 tty_insert_flip_char(tty,
3aeea5b9
JS		 501 cyy_readb(info, CyRDSR),
502 TTY_FRAME);
ce97a097
JS		 503 info->icount.rx++;
504 info->idle_stats.frame_errs++;
505 } else if (data & CyPARITY) {
506 /* Pieces of seven... */
507 tty_insert_flip_char(tty,
3aeea5b9
JS		 508 cyy_readb(info, CyRDSR),
509 TTY_PARITY);
ce97a097
JS		 510 info->icount.rx++;
511 info->idle_stats.parity_errs++;
512 } else if (data & CyOVERRUN) {
513 tty_insert_flip_char(tty, 0,
514 TTY_OVERRUN);
515 info->icount.rx++;
516 /* If the flip buffer itself is
517 overflowing, we still lose
518 the next incoming character.
519 */
520 tty_insert_flip_char(tty,
3aeea5b9
JS		 521 cyy_readb(info, CyRDSR),
522 TTY_FRAME);
02f1175c 523 info->icount.rx++;
02f1175c 524 info->idle_stats.overruns++;
ce97a097
JS		 525 /* These two conditions may imply */
526 /* a normal read should be done. */
527 /* } else if(data & CyTIMEOUT) { */
528 /* } else if(data & CySPECHAR) { */
529 } else {
530 tty_insert_flip_char(tty, 0,
531 TTY_NORMAL);
532 info->icount.rx++;
02f1175c 533 }
ce97a097
JS		 534 } else {
535 tty_insert_flip_char(tty, 0, TTY_NORMAL);
536 info->icount.rx++;
537 }
538 } else {
539 /* there was a software buffer overrun and nothing
540 * could be done about it!!! */
541 info->icount.buf_overrun++;
542 info->idle_stats.overruns++;
543 }
544 } else { /* normal character reception */
545 /* load # chars available from the chip */
3aeea5b9 546 char_count = cyy_readb(info, CyRDCR);
e941027f
JS		 547
548#ifdef CY_ENABLE_MONITORING
ce97a097
JS		 549 ++info->mon.int_count;
550 info->mon.char_count += char_count;
551 if (char_count > info->mon.char_max)
552 info->mon.char_max = char_count;
553 info->mon.char_last = char_count;
e941027f 554#endif
ce97a097
JS		 555 len = tty_buffer_request_room(tty, char_count);
556 while (len--) {
3aeea5b9 557 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 558 tty_insert_flip_char(tty, data, TTY_NORMAL);
559 info->idle_stats.recv_bytes++;
560 info->icount.rx++;
e941027f 561#ifdef CY_16Y_HACK
ce97a097 562 udelay(10L);
e941027f 563#endif
e941027f 564 }
ce97a097 565 info->idle_stats.recv_idle = jiffies;
e941027f 566 }
ce97a097 567 tty_schedule_flip(tty);
d13549f8 568 tty_kref_put(tty);
ce97a097
JS		 569end:
570 /* end of service */
3aeea5b9
JS		 571 cyy_writeb(info, CyRIR, save_xir & 0x3f);
572 cyy_writeb(info, CyCAR, save_car);
ce97a097 573}
e941027f 574
65f76a82 575static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
ce97a097
JS		 576 void __iomem *base_addr)
577{
578 struct cyclades_port *info;
d13549f8 579 struct tty_struct *tty;
65f76a82
JS		 580 int char_count, index = cinfo->bus_index;
581 u8 save_xir, channel, save_car, outch;
ce97a097
JS		 582
583 /* Since we only get here when the transmit buffer
584 is empty, we know we can always stuff a dozen
585 characters. */
e941027f 586#ifdef CY_DEBUG_INTERRUPTS
ce97a097 587 printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip);
e941027f
JS		 588#endif
589
ce97a097 590 /* determine the channel & change to that context */
65f76a82
JS		 591 save_xir = readb(base_addr + (CyTIR << index));
592 channel = save_xir & CyIRChannel;
ce97a097
JS		 593 save_car = readb(base_addr + (CyCAR << index));
594 cy_writeb(base_addr + (CyCAR << index), save_xir);
595
ce97a097 596 info = &cinfo->ports[channel + chip * 4];
d13549f8
JS		 597 tty = tty_port_tty_get(&info->port);
598 if (tty == NULL) {
3aeea5b9 599 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 600 goto end;
601 }
02f1175c 602
ce97a097
JS		 603 /* load the on-chip space for outbound data */
604 char_count = info->xmit_fifo_size;
02f1175c 605
ce97a097
JS		 606 if (info->x_char) { /* send special char */
607 outch = info->x_char;
3aeea5b9 608 cyy_writeb(info, CyTDR, outch);
ce97a097
JS		 609 char_count--;
610 info->icount.tx++;
611 info->x_char = 0;
612 }
02f1175c 613
ce97a097
JS		 614 if (info->breakon || info->breakoff) {
615 if (info->breakon) {
3aeea5b9
JS		 616 cyy_writeb(info, CyTDR, 0);
617 cyy_writeb(info, CyTDR, 0x81);
ce97a097
JS		 618 info->breakon = 0;
619 char_count -= 2;
e941027f 620 }
ce97a097 621 if (info->breakoff) {
3aeea5b9
JS		 622 cyy_writeb(info, CyTDR, 0);
623 cyy_writeb(info, CyTDR, 0x83);
ce97a097
JS		 624 info->breakoff = 0;
625 char_count -= 2;
e941027f 626 }
ce97a097 627 }
02f1175c 628
ce97a097
JS		 629 while (char_count-- > 0) {
630 if (!info->xmit_cnt) {
3aeea5b9
JS		 631 if (cyy_readb(info, CySRER) & CyTxMpty) {
632 cyy_writeb(info, CySRER,
633 cyy_readb(info, CySRER) & ~CyTxMpty);
ce97a097 634 } else {
3aeea5b9
JS		 635 cyy_writeb(info, CySRER, CyTxMpty |
636 (cyy_readb(info, CySRER) & ~CyTxRdy));
02f1175c 637 }
ce97a097
JS		 638 goto done;
639 }
77451e53 640 if (info->port.xmit_buf == NULL) {
3aeea5b9
JS		 641 cyy_writeb(info, CySRER,
642 cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 643 goto done;
644 }
d13549f8 645 if (tty->stopped || tty->hw_stopped) {
3aeea5b9
JS		 646 cyy_writeb(info, CySRER,
647 cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 648 goto done;
649 }
650 /* Because the Embedded Transmit Commands have been enabled,
651 * we must check to see if the escape character, NULL, is being
652 * sent. If it is, we must ensure that there is room for it to
653 * be doubled in the output stream. Therefore we no longer
654 * advance the pointer when the character is fetched, but
655 * rather wait until after the check for a NULL output
656 * character. This is necessary because there may not be room
657 * for the two chars needed to send a NULL.)
658 */
77451e53 659 outch = info->port.xmit_buf[info->xmit_tail];
ce97a097
JS		 660 if (outch) {
661 info->xmit_cnt--;
662 info->xmit_tail = (info->xmit_tail + 1) &
663 (SERIAL_XMIT_SIZE - 1);
3aeea5b9 664 cyy_writeb(info, CyTDR, outch);
ce97a097
JS		 665 info->icount.tx++;
666 } else {
667 if (char_count > 1) {
02f1175c
JS		 668 info->xmit_cnt--;
669 info->xmit_tail = (info->xmit_tail + 1) &
ce97a097 670 (SERIAL_XMIT_SIZE - 1);
3aeea5b9
JS		 671 cyy_writeb(info, CyTDR, outch);
672 cyy_writeb(info, CyTDR, 0);
02f1175c 673 info->icount.tx++;
ce97a097 674 char_count--;
02f1175c 675 }
e941027f 676 }
e941027f
JS		 677 }
678
ce97a097 679done:
d13549f8
JS		 680 tty_wakeup(tty);
681 tty_kref_put(tty);
ce97a097
JS		 682end:
683 /* end of service */
3aeea5b9
JS		 684 cyy_writeb(info, CyTIR, save_xir & 0x3f);
685 cyy_writeb(info, CyCAR, save_car);
ce97a097 686}
02f1175c 687
ce97a097
JS		 688static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
689 void __iomem *base_addr)
690{
691 struct cyclades_port *info;
d13549f8 692 struct tty_struct *tty;
65f76a82
JS		 693 int index = cinfo->bus_index;
694 u8 save_xir, channel, save_car, mdm_change, mdm_status;
ce97a097
JS		 695
696 /* determine the channel & change to that context */
65f76a82
JS		 697 save_xir = readb(base_addr + (CyMIR << index));
698 channel = save_xir & CyIRChannel;
ce97a097 699 info = &cinfo->ports[channel + chip * 4];
3aeea5b9
JS		 700 save_car = cyy_readb(info, CyCAR);
701 cyy_writeb(info, CyCAR, save_xir);
ce97a097 702
3aeea5b9
JS		 703 mdm_change = cyy_readb(info, CyMISR);
704 mdm_status = cyy_readb(info, CyMSVR1);
ce97a097 705
d13549f8
JS		 706 tty = tty_port_tty_get(&info->port);
707 if (!tty)
ce97a097
JS		 708 goto end;
709
710 if (mdm_change & CyANY_DELTA) {
711 /* For statistics only */
712 if (mdm_change & CyDCD)
713 info->icount.dcd++;
714 if (mdm_change & CyCTS)
715 info->icount.cts++;
716 if (mdm_change & CyDSR)
717 info->icount.dsr++;
718 if (mdm_change & CyRI)
719 info->icount.rng++;
720
bdc04e31 721 wake_up_interruptible(&info->port.delta_msr_wait);
ce97a097
JS		 722 }
723
77451e53 724 if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) {
174e6fe0
JS		 725 if (mdm_status & CyDCD)
726 wake_up_interruptible(&info->port.open_wait);
727 else
d13549f8 728 tty_hangup(tty);
ce97a097 729 }
77451e53 730 if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) {
d13549f8 731 if (tty->hw_stopped) {
ce97a097
JS		 732 if (mdm_status & CyCTS) {
733 /* cy_start isn't used
734 because... !!! */
d13549f8 735 tty->hw_stopped = 0;
3aeea5b9
JS		 736 cyy_writeb(info, CySRER,
737 cyy_readb(info, CySRER) | CyTxRdy);
d13549f8 738 tty_wakeup(tty);
02f1175c 739 }
ce97a097
JS		 740 } else {
741 if (!(mdm_status & CyCTS)) {
742 /* cy_stop isn't used
743 because ... !!! */
d13549f8 744 tty->hw_stopped = 1;
3aeea5b9
JS		 745 cyy_writeb(info, CySRER,
746 cyy_readb(info, CySRER) & ~CyTxRdy);
02f1175c 747 }
e941027f 748 }
e941027f 749 }
ce97a097
JS		 750/* if (mdm_change & CyDSR) {
751 }
752 if (mdm_change & CyRI) {
753 }*/
d13549f8 754 tty_kref_put(tty);
ce97a097
JS		 755end:
756 /* end of service */
3aeea5b9
JS		 757 cyy_writeb(info, CyMIR, save_xir & 0x3f);
758 cyy_writeb(info, CyCAR, save_car);
e941027f
JS		 759}
760
1da177e4
LT		 761/* The real interrupt service routine is called
762 whenever the card wants its hand held--chars
763 received, out buffer empty, modem change, etc.
764 */
02f1175c 765static irqreturn_t cyy_interrupt(int irq, void *dev_id)
1da177e4 766{
02f1175c 767 int status;
f7429034 768 struct cyclades_card *cinfo = dev_id;
02f1175c 769 void __iomem *base_addr, *card_base_addr;
65f76a82 770 unsigned int chip, too_many, had_work;
02f1175c 771 int index;
02f1175c 772
f7429034 773 if (unlikely(cinfo == NULL)) {
1da177e4 774#ifdef CY_DEBUG_INTERRUPTS
15ed6cc0
AC		 775 printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",
776 irq);
1da177e4 777#endif
02f1175c
JS		 778 return IRQ_NONE; /* spurious interrupt */
779 }
780
781 card_base_addr = cinfo->base_addr;
782 index = cinfo->bus_index;
783
f1e83c6c
JS		 784 /* card was not initialized yet (e.g. DEBUG_SHIRQ) */
785 if (unlikely(card_base_addr == NULL))
786 return IRQ_HANDLED;
787
02f1175c
JS		 788 /* This loop checks all chips in the card. Make a note whenever
789 _any_ chip had some work to do, as this is considered an
790 indication that there will be more to do. Only when no chip
791 has any work does this outermost loop exit.
792 */
793 do {
794 had_work = 0;
795 for (chip = 0; chip < cinfo->num_chips; chip++) {
796 base_addr = cinfo->base_addr +
797 (cy_chip_offset[chip] << index);
798 too_many = 0;
db05c3b1 799 while ((status = readb(base_addr +
02f1175c
JS		 800 (CySVRR << index))) != 0x00) {
801 had_work++;
802 /* The purpose of the following test is to ensure that
803 no chip can monopolize the driver. This forces the
804 chips to be checked in a round-robin fashion (after
805 draining each of a bunch (1000) of characters).
806 */
ce97a097 807 if (1000 < too_many++)
02f1175c 808 break;
1c0a387c 809 spin_lock(&cinfo->card_lock);
ce97a097
JS		 810 if (status & CySRReceive) /* rx intr */
811 cyy_chip_rx(cinfo, chip, base_addr);
812 if (status & CySRTransmit) /* tx intr */
813 cyy_chip_tx(cinfo, chip, base_addr);
814 if (status & CySRModem) /* modem intr */
815 cyy_chip_modem(cinfo, chip, base_addr);
1c0a387c 816 spin_unlock(&cinfo->card_lock);
02f1175c
JS		 817 }
818 }
819 } while (had_work);
820
821 /* clear interrupts */
822 spin_lock(&cinfo->card_lock);
823 cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0);
824 /* Cy_ClrIntr is 0x1800 */
825 spin_unlock(&cinfo->card_lock);
826 return IRQ_HANDLED;
827} /* cyy_interrupt */
1da177e4 828
4d768200
JS		 829static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set,
830 unsigned int clear)
831{
832 struct cyclades_card *card = info->card;
3aeea5b9 833 int channel = info->line - card->first_line;
0d348729 834 u32 rts, dtr, msvrr, msvrd;
4d768200 835
4d768200 836 channel &= 0x03;
4d768200 837
0d348729
JS		 838 if (info->rtsdtr_inv) {
839 msvrr = CyMSVR2;
840 msvrd = CyMSVR1;
841 rts = CyDTR;
842 dtr = CyRTS;
843 } else {
844 msvrr = CyMSVR1;
845 msvrd = CyMSVR2;
846 rts = CyRTS;
847 dtr = CyDTR;
848 }
4d768200 849 if (set & TIOCM_RTS) {
3aeea5b9
JS		 850 cyy_writeb(info, CyCAR, channel);
851 cyy_writeb(info, msvrr, rts);
4d768200
JS		 852 }
853 if (clear & TIOCM_RTS) {
3aeea5b9
JS		 854 cyy_writeb(info, CyCAR, channel);
855 cyy_writeb(info, msvrr, ~rts);
4d768200
JS		 856 }
857 if (set & TIOCM_DTR) {
3aeea5b9
JS		 858 cyy_writeb(info, CyCAR, channel);
859 cyy_writeb(info, msvrd, dtr);
4d768200
JS		 860#ifdef CY_DEBUG_DTR
861 printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
862 printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
3aeea5b9
JS		 863 cyy_readb(info, CyMSVR1),
864 cyy_readb(info, CyMSVR2));
4d768200
JS		 865#endif
866 }
867 if (clear & TIOCM_DTR) {
3aeea5b9
JS		 868 cyy_writeb(info, CyCAR, channel);
869 cyy_writeb(info, msvrd, ~dtr);
4d768200
JS		 870#ifdef CY_DEBUG_DTR
871 printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
872 printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
3aeea5b9
JS		 873 cyy_readb(info, CyMSVR1),
874 cyy_readb(info, CyMSVR2));
4d768200
JS		 875#endif
876 }
877}
878
1da177e4
LT		 879/***********************************************************/
880/********* End of block of Cyclom-Y specific code **********/
15ed6cc0 881/******** Start of block of Cyclades-Z specific code *******/
1da177e4
LT		 882/***********************************************************/
883
884static int
02f1175c 885cyz_fetch_msg(struct cyclades_card *cinfo,
15ed6cc0 886 __u32 *channel, __u8 *cmd, __u32 *param)
1da177e4 887{
f0eefdc3 888 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
02f1175c
JS		 889 unsigned long loc_doorbell;
890
97e87f8e 891 loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell);
02f1175c
JS		 892 if (loc_doorbell) {
893 *cmd = (char)(0xff & loc_doorbell);
db05c3b1
JS		 894 *channel = readl(&board_ctrl->fwcmd_channel);
895 *param = (__u32) readl(&board_ctrl->fwcmd_param);
97e87f8e 896 cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff);
02f1175c
JS		 897 return 1;
898 }
899 return 0;
900} /* cyz_fetch_msg */
1da177e4
LT		 901
902static int
02f1175c 903cyz_issue_cmd(struct cyclades_card *cinfo,
1a86b5e3 904 __u32 channel, __u8 cmd, __u32 param)
1da177e4 905{
f0eefdc3 906 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
1a86b5e3 907 __u32 __iomem *pci_doorbell;
65f76a82 908 unsigned int index;
02f1175c 909
2693f485 910 if (!cyz_is_loaded(cinfo))
096dcfce 911 return -1;
15ed6cc0 912
02f1175c 913 index = 0;
97e87f8e 914 pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell;
db05c3b1 915 while ((readl(pci_doorbell) & 0xff) != 0) {
15ed6cc0 916 if (index++ == 1000)
db05c3b1 917 return (int)(readl(pci_doorbell) & 0xff);
02f1175c
JS		 918 udelay(50L);
919 }
920 cy_writel(&board_ctrl->hcmd_channel, channel);
921 cy_writel(&board_ctrl->hcmd_param, param);
922 cy_writel(pci_doorbell, (long)cmd);
923
096dcfce 924 return 0;
02f1175c 925} /* cyz_issue_cmd */
1da177e4 926
f0eefdc3 927static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 928{
f0eefdc3 929 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
875b206b 930 struct cyclades_card *cinfo = info->card;
65f76a82 931 unsigned int char_count;
02f1175c 932 int len;
1da177e4 933#ifdef BLOCKMOVE
ce71b0ff 934 unsigned char *buf;
1da177e4 935#else
02f1175c 936 char data;
1da177e4 937#endif
ad39c300 938 __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;
1da177e4 939
db05c3b1
JS		 940 rx_get = new_rx_get = readl(&buf_ctrl->rx_get);
941 rx_put = readl(&buf_ctrl->rx_put);
942 rx_bufsize = readl(&buf_ctrl->rx_bufsize);
943 rx_bufaddr = readl(&buf_ctrl->rx_bufaddr);
02f1175c
JS		 944 if (rx_put >= rx_get)
945 char_count = rx_put - rx_get;
946 else
947 char_count = rx_put - rx_get + rx_bufsize;
1da177e4 948
02f1175c 949 if (char_count) {
1da177e4 950#ifdef CY_ENABLE_MONITORING
02f1175c
JS		 951 info->mon.int_count++;
952 info->mon.char_count += char_count;
953 if (char_count > info->mon.char_max)
954 info->mon.char_max = char_count;
955 info->mon.char_last = char_count;
1da177e4 956#endif
f7429034 957 if (tty == NULL) {
02f1175c
JS		 958 /* flush received characters */
959 new_rx_get = (new_rx_get + char_count) &
960 (rx_bufsize - 1);
961 info->rflush_count++;
962 } else {
1da177e4 963#ifdef BLOCKMOVE
02f1175c
JS		 964 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
965 for performance, but because of buffer boundaries, there
966 may be several steps to the operation */
ce71b0ff
JS		 967 while (1) {
968 len = tty_prepare_flip_string(tty, &buf,
969 char_count);
970 if (!len)
971 break;
972
973 len = min_t(unsigned int, min(len, char_count),
974 rx_bufsize - new_rx_get);
975
976 memcpy_fromio(buf, cinfo->base_addr +
977 rx_bufaddr + new_rx_get, len);
978
979 new_rx_get = (new_rx_get + len) &
02f1175c 980 (rx_bufsize - 1);
ce71b0ff
JS		 981 char_count -= len;
982 info->icount.rx += len;
983 info->idle_stats.recv_bytes += len;
02f1175c 984 }
1da177e4 985#else
02f1175c
JS		 986 len = tty_buffer_request_room(tty, char_count);
987 while (len--) {
db05c3b1 988 data = readb(cinfo->base_addr + rx_bufaddr +
02f1175c 989 new_rx_get);
15ed6cc0
AC		 990 new_rx_get = (new_rx_get + 1) &
991 (rx_bufsize - 1);
02f1175c
JS		 992 tty_insert_flip_char(tty, data, TTY_NORMAL);
993 info->idle_stats.recv_bytes++;
994 info->icount.rx++;
995 }
1da177e4
LT		 996#endif
997#ifdef CONFIG_CYZ_INTR
02f1175c
JS		 998 /* Recalculate the number of chars in the RX buffer and issue
999 a cmd in case it's higher than the RX high water mark */
db05c3b1 1000 rx_put = readl(&buf_ctrl->rx_put);
02f1175c
JS		 1001 if (rx_put >= rx_get)
1002 char_count = rx_put - rx_get;
1003 else
1004 char_count = rx_put - rx_get + rx_bufsize;
65f76a82 1005 if (char_count >= readl(&buf_ctrl->rx_threshold) &&
ebafeeff
JS		 1006 !timer_pending(&cyz_rx_full_timer[
1007 info->line]))
1008 mod_timer(&cyz_rx_full_timer[info->line],
1009 jiffies + 1);
1da177e4 1010#endif
02f1175c
JS		 1011 info->idle_stats.recv_idle = jiffies;
1012 tty_schedule_flip(tty);
1013 }
1014 /* Update rx_get */
1015 cy_writel(&buf_ctrl->rx_get, new_rx_get);
1da177e4 1016 }
1da177e4
LT		 1017}
1018
f0eefdc3 1019static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1020{
f0eefdc3 1021 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
875b206b 1022 struct cyclades_card *cinfo = info->card;
65f76a82
JS		 1023 u8 data;
1024 unsigned int char_count;
1da177e4 1025#ifdef BLOCKMOVE
02f1175c 1026 int small_count;
1da177e4 1027#endif
ad39c300 1028 __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr;
1da177e4 1029
02f1175c
JS		 1030 if (info->xmit_cnt <= 0) /* Nothing to transmit */
1031 return;
1da177e4 1032
db05c3b1
JS		 1033 tx_get = readl(&buf_ctrl->tx_get);
1034 tx_put = readl(&buf_ctrl->tx_put);
1035 tx_bufsize = readl(&buf_ctrl->tx_bufsize);
1036 tx_bufaddr = readl(&buf_ctrl->tx_bufaddr);
02f1175c
JS		 1037 if (tx_put >= tx_get)
1038 char_count = tx_get - tx_put - 1 + tx_bufsize;
1039 else
1040 char_count = tx_get - tx_put - 1;
1da177e4 1041
02f1175c 1042 if (char_count) {
1da177e4 1043
f7429034 1044 if (tty == NULL)
02f1175c 1045 goto ztxdone;
1da177e4 1046
02f1175c
JS		 1047 if (info->x_char) { /* send special char */
1048 data = info->x_char;
1da177e4 1049
02f1175c
JS		 1050 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1051 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1052 info->x_char = 0;
1053 char_count--;
1054 info->icount.tx++;
02f1175c 1055 }
1da177e4 1056#ifdef BLOCKMOVE
02f1175c
JS		 1057 while (0 < (small_count = min_t(unsigned int,
1058 tx_bufsize - tx_put, min_t(unsigned int,
1059 (SERIAL_XMIT_SIZE - info->xmit_tail),
1060 min_t(unsigned int, info->xmit_cnt,
1061 char_count))))) {
1062
1063 memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr +
1064 tx_put),
77451e53 1065 &info->port.xmit_buf[info->xmit_tail],
02f1175c
JS		 1066 small_count);
1067
1068 tx_put = (tx_put + small_count) & (tx_bufsize - 1);
1069 char_count -= small_count;
1070 info->icount.tx += small_count;
1071 info->xmit_cnt -= small_count;
1072 info->xmit_tail = (info->xmit_tail + small_count) &
1073 (SERIAL_XMIT_SIZE - 1);
02f1175c 1074 }
1da177e4 1075#else
02f1175c 1076 while (info->xmit_cnt && char_count) {
77451e53 1077 data = info->port.xmit_buf[info->xmit_tail];
02f1175c
JS		 1078 info->xmit_cnt--;
1079 info->xmit_tail = (info->xmit_tail + 1) &
1080 (SERIAL_XMIT_SIZE - 1);
1081
1082 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1083 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1084 char_count--;
1085 info->icount.tx++;
02f1175c 1086 }
1da177e4 1087#endif
ebafeeff 1088 tty_wakeup(tty);
7fa57a0c 1089ztxdone:
02f1175c
JS		 1090 /* Update tx_put */
1091 cy_writel(&buf_ctrl->tx_put, tx_put);
1da177e4 1092 }
1da177e4
LT		 1093}
1094
02f1175c 1095static void cyz_handle_cmd(struct cyclades_card *cinfo)
1da177e4 1096{
f0eefdc3 1097 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
02f1175c
JS		 1098 struct tty_struct *tty;
1099 struct cyclades_port *info;
101b8159 1100 __u32 channel, param, fw_ver;
1a86b5e3 1101 __u8 cmd;
02f1175c
JS		 1102 int special_count;
1103 int delta_count;
1104
db05c3b1 1105 fw_ver = readl(&board_ctrl->fw_version);
02f1175c
JS		 1106
1107 while (cyz_fetch_msg(cinfo, &channel, &cmd, &param) == 1) {
1108 special_count = 0;
1109 delta_count = 0;
dd025c0c 1110 info = &cinfo->ports[channel];
d13549f8 1111 tty = tty_port_tty_get(&info->port);
15ed6cc0 1112 if (tty == NULL)
02f1175c 1113 continue;
f7429034 1114
02f1175c
JS		 1115 switch (cmd) {
1116 case C_CM_PR_ERROR:
1117 tty_insert_flip_char(tty, 0, TTY_PARITY);
1118 info->icount.rx++;
1119 special_count++;
1120 break;
1121 case C_CM_FR_ERROR:
1122 tty_insert_flip_char(tty, 0, TTY_FRAME);
1123 info->icount.rx++;
1124 special_count++;
1125 break;
1126 case C_CM_RXBRK:
1127 tty_insert_flip_char(tty, 0, TTY_BREAK);
1128 info->icount.rx++;
1129 special_count++;
1130 break;
1131 case C_CM_MDCD:
1132 info->icount.dcd++;
1133 delta_count++;
77451e53 1134 if (info->port.flags & ASYNC_CHECK_CD) {
f0eefdc3
JS		 1135 u32 dcd = fw_ver > 241 ? param :
1136 readl(&info->u.cyz.ch_ctrl->rs_status);
174e6fe0 1137 if (dcd & C_RS_DCD)
77451e53 1138 wake_up_interruptible(&info->port.open_wait);
174e6fe0 1139 else
d13549f8 1140 tty_hangup(tty);
02f1175c
JS		 1141 }
1142 break;
1143 case C_CM_MCTS:
1144 info->icount.cts++;
1145 delta_count++;
1146 break;
1147 case C_CM_MRI:
1148 info->icount.rng++;
1149 delta_count++;
1150 break;
1151 case C_CM_MDSR:
1152 info->icount.dsr++;
1153 delta_count++;
1154 break;
1da177e4 1155#ifdef Z_WAKE
02f1175c 1156 case C_CM_IOCTLW:
ebafeeff 1157 complete(&info->shutdown_wait);
02f1175c 1158 break;
1da177e4
LT		 1159#endif
1160#ifdef CONFIG_CYZ_INTR
02f1175c
JS		 1161 case C_CM_RXHIWM:
1162 case C_CM_RXNNDT:
1163 case C_CM_INTBACK2:
1164 /* Reception Interrupt */
1da177e4 1165#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1166 printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
1167 "port %ld\n", info->card, channel);
1da177e4 1168#endif
f0eefdc3 1169 cyz_handle_rx(info, tty);
02f1175c
JS		 1170 break;
1171 case C_CM_TXBEMPTY:
1172 case C_CM_TXLOWWM:
1173 case C_CM_INTBACK:
1174 /* Transmission Interrupt */
1da177e4 1175#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1176 printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
1177 "port %ld\n", info->card, channel);
1da177e4 1178#endif
f0eefdc3 1179 cyz_handle_tx(info, tty);
02f1175c
JS		 1180 break;
1181#endif /* CONFIG_CYZ_INTR */
1182 case C_CM_FATAL:
1183 /* should do something with this !!! */
1184 break;
1185 default:
1186 break;
1187 }
1188 if (delta_count)
bdc04e31 1189 wake_up_interruptible(&info->port.delta_msr_wait);
02f1175c
JS		 1190 if (special_count)
1191 tty_schedule_flip(tty);
d13549f8 1192 tty_kref_put(tty);
1da177e4 1193 }
1da177e4
LT		 1194}
1195
1196#ifdef CONFIG_CYZ_INTR
02f1175c 1197static irqreturn_t cyz_interrupt(int irq, void *dev_id)
1da177e4 1198{
f7429034 1199 struct cyclades_card *cinfo = dev_id;
1da177e4 1200
2693f485 1201 if (unlikely(!cyz_is_loaded(cinfo))) {
1da177e4 1202#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1203 printk(KERN_DEBUG "cyz_interrupt: board not yet loaded "
1204 "(IRQ%d).\n", irq);
1da177e4 1205#endif
02f1175c
JS		 1206 return IRQ_NONE;
1207 }
1da177e4 1208
02f1175c
JS		 1209 /* Handle the interrupts */
1210 cyz_handle_cmd(cinfo);
1da177e4 1211
02f1175c
JS		 1212 return IRQ_HANDLED;
1213} /* cyz_interrupt */
1da177e4 1214
02f1175c 1215static void cyz_rx_restart(unsigned long arg)
1da177e4 1216{
02f1175c 1217 struct cyclades_port *info = (struct cyclades_port *)arg;
875b206b 1218 struct cyclades_card *card = info->card;
02f1175c 1219 int retval;
875b206b 1220 __u32 channel = info->line - card->first_line;
02f1175c
JS		 1221 unsigned long flags;
1222
9fa1b3b1 1223 spin_lock_irqsave(&card->card_lock, flags);
875b206b 1224 retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L);
02f1175c 1225 if (retval != 0) {
21719191 1226 printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n",
02f1175c
JS		 1227 info->line, retval);
1228 }
9fa1b3b1 1229 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4
LT		 1230}
1231
02f1175c 1232#else /* CONFIG_CYZ_INTR */
1da177e4 1233
02f1175c 1234static void cyz_poll(unsigned long arg)
1da177e4 1235{
02f1175c
JS		 1236 struct cyclades_card *cinfo;
1237 struct cyclades_port *info;
b7050906 1238 unsigned long expires = jiffies + HZ;
65f76a82 1239 unsigned int port, card;
1da177e4 1240
02f1175c
JS		 1241 for (card = 0; card < NR_CARDS; card++) {
1242 cinfo = &cy_card[card];
1243
2693f485 1244 if (!cy_is_Z(cinfo))
02f1175c 1245 continue;
2693f485 1246 if (!cyz_is_loaded(cinfo))
02f1175c
JS		 1247 continue;
1248
1da177e4 1249 /* Skip first polling cycle to avoid racing conditions with the FW */
02f1175c 1250 if (!cinfo->intr_enabled) {
02f1175c
JS		 1251 cinfo->intr_enabled = 1;
1252 continue;
1253 }
1da177e4 1254
02f1175c 1255 cyz_handle_cmd(cinfo);
1da177e4 1256
02f1175c 1257 for (port = 0; port < cinfo->nports; port++) {
d13549f8
JS		 1258 struct tty_struct *tty;
1259
dd025c0c 1260 info = &cinfo->ports[port];
d13549f8
JS		 1261 tty = tty_port_tty_get(&info->port);
1262 /* OK to pass NULL to the handle functions below.
1263 They need to drop the data in that case. */
1264
02f1175c 1265 if (!info->throttle)
f0eefdc3
JS		 1266 cyz_handle_rx(info, tty);
1267 cyz_handle_tx(info, tty);
d13549f8 1268 tty_kref_put(tty);
02f1175c
JS		 1269 }
1270 /* poll every 'cyz_polling_cycle' period */
b7050906 1271 expires = jiffies + cyz_polling_cycle;
1da177e4 1272 }
b7050906 1273 mod_timer(&cyz_timerlist, expires);
02f1175c 1274} /* cyz_poll */
1da177e4 1275
02f1175c 1276#endif /* CONFIG_CYZ_INTR */
1da177e4
LT		 1277
1278/********** End of block of Cyclades-Z specific code *********/
1279/***********************************************************/
1280
1da177e4
LT		 1281/* This is called whenever a port becomes active;
1282 interrupts are enabled and DTR & RTS are turned on.
1283 */
d13549f8 1284static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1285{
875b206b 1286 struct cyclades_card *card;
02f1175c
JS		 1287 unsigned long flags;
1288 int retval = 0;
cc7fdf49 1289 int channel;
02f1175c 1290 unsigned long page;
1da177e4 1291
02f1175c 1292 card = info->card;
875b206b 1293 channel = info->line - card->first_line;
1da177e4 1294
02f1175c
JS		 1295 page = get_zeroed_page(GFP_KERNEL);
1296 if (!page)
1297 return -ENOMEM;
1da177e4 1298
9fa1b3b1 1299 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1300
cc7fdf49 1301 if (info->port.flags & ASYNC_INITIALIZED)
02f1175c 1302 goto errout;
1da177e4 1303
02f1175c 1304 if (!info->type) {
d13549f8 1305 set_bit(TTY_IO_ERROR, &tty->flags);
02f1175c
JS		 1306 goto errout;
1307 }
1da177e4 1308
77451e53 1309 if (info->port.xmit_buf)
02f1175c
JS		 1310 free_page(page);
1311 else
77451e53 1312 info->port.xmit_buf = (unsigned char *)page;
1da177e4 1313
9fa1b3b1 1314 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4 1315
d13549f8 1316 cy_set_line_char(info, tty);
1da177e4 1317
2693f485 1318 if (!cy_is_Z(card)) {
02f1175c 1319 channel &= 0x03;
1da177e4 1320
9fa1b3b1 1321 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1322
3aeea5b9 1323 cyy_writeb(info, CyCAR, channel);
1da177e4 1324
3aeea5b9 1325 cyy_writeb(info, CyRTPR,
02f1175c
JS		 1326 (info->default_timeout ? info->default_timeout : 0x02));
1327 /* 10ms rx timeout */
1da177e4 1328
3aeea5b9 1329 cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR);
1da177e4 1330
4d768200 1331 cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0);
1da177e4 1332
3aeea5b9 1333 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
02f1175c 1334 } else {
f0eefdc3 1335 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
1da177e4 1336
2693f485 1337 if (!cyz_is_loaded(card))
02f1175c 1338 return -ENODEV;
1da177e4 1339
1da177e4 1340#ifdef CY_DEBUG_OPEN
21719191 1341 printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
f0eefdc3 1342 "base_addr %p\n", card, channel, card->base_addr);
1da177e4 1343#endif
9fa1b3b1 1344 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1345
f0eefdc3 1346 cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE);
1da177e4
LT		 1347#ifdef Z_WAKE
1348#ifdef CONFIG_CYZ_INTR
f0eefdc3 1349 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1350 C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
1351 C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD);
1da177e4 1352#else
f0eefdc3 1353 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1354 C_IN_IOCTLW | C_IN_MDCD);
1355#endif /* CONFIG_CYZ_INTR */
1da177e4
LT		 1356#else
1357#ifdef CONFIG_CYZ_INTR
f0eefdc3 1358 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1359 C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
1360 C_IN_RXNNDT | C_IN_MDCD);
1da177e4 1361#else
f0eefdc3 1362 cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD);
02f1175c
JS		 1363#endif /* CONFIG_CYZ_INTR */
1364#endif /* Z_WAKE */
1365
875b206b 1366 retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
02f1175c 1367 if (retval != 0) {
21719191
JS		 1368 printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was "
1369 "%x\n", info->line, retval);
02f1175c 1370 }
1da177e4 1371
02f1175c 1372 /* Flush RX buffers before raising DTR and RTS */
875b206b 1373 retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L);
02f1175c 1374 if (retval != 0) {
21719191
JS		 1375 printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was "
1376 "%x\n", info->line, retval);
02f1175c 1377 }
1da177e4 1378
02f1175c
JS		 1379 /* set timeout !!! */
1380 /* set RTS and DTR !!! */
4d768200 1381 tty_port_raise_dtr_rts(&info->port);
1da177e4 1382
02f1175c 1383 /* enable send, recv, modem !!! */
cc7fdf49 1384 }
02f1175c 1385
cc7fdf49 1386 info->port.flags |= ASYNC_INITIALIZED;
1da177e4 1387
cc7fdf49
JS		 1388 clear_bit(TTY_IO_ERROR, &tty->flags);
1389 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1390 info->breakon = info->breakoff = 0;
1391 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
1392 info->idle_stats.in_use =
1393 info->idle_stats.recv_idle =
1394 info->idle_stats.xmit_idle = jiffies;
1395
1396 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4
LT		 1397
1398#ifdef CY_DEBUG_OPEN
21719191 1399 printk(KERN_DEBUG "cyc startup done\n");
1da177e4
LT		 1400#endif
1401 return 0;
1402
1403errout:
9fa1b3b1 1404 spin_unlock_irqrestore(&card->card_lock, flags);
cc7fdf49 1405 free_page(page);
1da177e4 1406 return retval;
02f1175c 1407} /* startup */
1da177e4 1408
02f1175c 1409static void start_xmit(struct cyclades_port *info)
1da177e4 1410{
3aeea5b9 1411 struct cyclades_card *card = info->card;
02f1175c 1412 unsigned long flags;
3aeea5b9 1413 int channel = info->line - card->first_line;
1da177e4 1414
2693f485 1415 if (!cy_is_Z(card)) {
9fa1b3b1 1416 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 1417 cyy_writeb(info, CyCAR, channel & 0x03);
1418 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
9fa1b3b1 1419 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1420 } else {
1da177e4 1421#ifdef CONFIG_CYZ_INTR
02f1175c 1422 int retval;
1da177e4 1423
9fa1b3b1 1424 spin_lock_irqsave(&card->card_lock, flags);
875b206b 1425 retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L);
02f1175c 1426 if (retval != 0) {
21719191
JS		 1427 printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was "
1428 "%x\n", info->line, retval);
02f1175c 1429 }
9fa1b3b1 1430 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 1431#else /* CONFIG_CYZ_INTR */
1432 /* Don't have to do anything at this time */
1433#endif /* CONFIG_CYZ_INTR */
1434 }
1435} /* start_xmit */
1da177e4
LT		 1436
1437/*
1438 * This routine shuts down a serial port; interrupts are disabled,
1439 * and DTR is dropped if the hangup on close termio flag is on.
1440 */
d13549f8 1441static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1442{
875b206b 1443 struct cyclades_card *card;
02f1175c 1444 unsigned long flags;
02f1175c 1445
77451e53 1446 if (!(info->port.flags & ASYNC_INITIALIZED))
02f1175c 1447 return;
02f1175c
JS		 1448
1449 card = info->card;
2693f485 1450 if (!cy_is_Z(card)) {
9fa1b3b1 1451 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 1452
1453 /* Clear delta_msr_wait queue to avoid mem leaks. */
bdc04e31 1454 wake_up_interruptible(&info->port.delta_msr_wait);
1da177e4 1455
77451e53 1456 if (info->port.xmit_buf) {
02f1175c 1457 unsigned char *temp;
77451e53
AC		 1458 temp = info->port.xmit_buf;
1459 info->port.xmit_buf = NULL;
02f1175c
JS		 1460 free_page((unsigned long)temp);
1461 }
4d768200
JS		 1462 if (tty->termios->c_cflag & HUPCL)
1463 cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR);
1464
3aeea5b9 1465 cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR);
02f1175c
JS		 1466 /* it may be appropriate to clear _XMIT at
1467 some later date (after testing)!!! */
1468
d13549f8 1469 set_bit(TTY_IO_ERROR, &tty->flags);
77451e53 1470 info->port.flags &= ~ASYNC_INITIALIZED;
9fa1b3b1 1471 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1472 } else {
1da177e4 1473#ifdef CY_DEBUG_OPEN
0e7f4194 1474 int channel = info->line - card->first_line;
21719191 1475 printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
f0eefdc3 1476 "base_addr %p\n", card, channel, card->base_addr);
1da177e4
LT		 1477#endif
1478
2693f485 1479 if (!cyz_is_loaded(card))
02f1175c 1480 return;
1da177e4 1481
9fa1b3b1 1482 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1483
77451e53 1484 if (info->port.xmit_buf) {
02f1175c 1485 unsigned char *temp;
77451e53
AC		 1486 temp = info->port.xmit_buf;
1487 info->port.xmit_buf = NULL;
02f1175c 1488 free_page((unsigned long)temp);
1da177e4 1489 }
02f1175c 1490
4d768200
JS		 1491 if (tty->termios->c_cflag & HUPCL)
1492 tty_port_lower_dtr_rts(&info->port);
1da177e4 1493
d13549f8 1494 set_bit(TTY_IO_ERROR, &tty->flags);
77451e53 1495 info->port.flags &= ~ASYNC_INITIALIZED;
02f1175c 1496
9fa1b3b1 1497 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1498 }
1da177e4
LT		 1499
1500#ifdef CY_DEBUG_OPEN
21719191 1501 printk(KERN_DEBUG "cyc shutdown done\n");
1da177e4 1502#endif
02f1175c 1503} /* shutdown */
1da177e4
LT		 1504
1505/*
1506 * ------------------------------------------------------------
1507 * cy_open() and friends
1508 * ------------------------------------------------------------
1509 */
1510
1da177e4
LT		 1511/*
1512 * This routine is called whenever a serial port is opened. It
1513 * performs the serial-specific initialization for the tty structure.
1514 */
02f1175c 1515static int cy_open(struct tty_struct *tty, struct file *filp)
1da177e4 1516{
02f1175c 1517 struct cyclades_port *info;
410235fd 1518 unsigned int i, line = tty->index;
65f76a82 1519 int retval;
1da177e4 1520
dd025c0c
JS		 1521 for (i = 0; i < NR_CARDS; i++)
1522 if (line < cy_card[i].first_line + cy_card[i].nports &&
1523 line >= cy_card[i].first_line)
1524 break;
1525 if (i >= NR_CARDS)
1526 return -ENODEV;
1527 info = &cy_card[i].ports[line - cy_card[i].first_line];
15ed6cc0 1528 if (info->line < 0)
02f1175c 1529 return -ENODEV;
1da177e4 1530
02f1175c
JS		 1531 /* If the card's firmware hasn't been loaded,
1532 treat it as absent from the system. This
1533 will make the user pay attention.
1534 */
2693f485 1535 if (cy_is_Z(info->card)) {
875b206b 1536 struct cyclades_card *cinfo = info->card;
02f1175c
JS		 1537 struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS;
1538
2693f485
JS		 1539 if (!cyz_is_loaded(cinfo)) {
1540 if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) &&
101b8159
JS		 1541 readl(&firm_id->signature) ==
1542 ZFIRM_HLT) {
21719191
JS		 1543 printk(KERN_ERR "cyc:Cyclades-Z Error: you "
1544 "need an external power supply for "
1545 "this number of ports.\nFirmware "
1546 "halted.\n");
02f1175c 1547 } else {
21719191
JS		 1548 printk(KERN_ERR "cyc:Cyclades-Z firmware not "
1549 "yet loaded\n");
02f1175c
JS		 1550 }
1551 return -ENODEV;
1552 }
1553#ifdef CONFIG_CYZ_INTR
1554 else {
1555 /* In case this Z board is operating in interrupt mode, its
1556 interrupts should be enabled as soon as the first open
1557 happens to one of its ports. */
1558 if (!cinfo->intr_enabled) {
97e87f8e 1559 u16 intr;
02f1175c 1560
02f1175c 1561 /* Enable interrupts on the PLX chip */
97e87f8e
JS		 1562 intr = readw(&cinfo->ctl_addr.p9060->
1563 intr_ctrl_stat) | 0x0900;
1564 cy_writew(&cinfo->ctl_addr.p9060->
1565 intr_ctrl_stat, intr);
02f1175c
JS		 1566 /* Enable interrupts on the FW */
1567 retval = cyz_issue_cmd(cinfo, 0,
1568 C_CM_IRQ_ENBL, 0L);
1569 if (retval != 0) {
21719191
JS		 1570 printk(KERN_ERR "cyc:IRQ enable retval "
1571 "was %x\n", retval);
02f1175c 1572 }
02f1175c
JS		 1573 cinfo->intr_enabled = 1;
1574 }
1da177e4 1575 }
02f1175c
JS		 1576#endif /* CONFIG_CYZ_INTR */
1577 /* Make sure this Z port really exists in hardware */
1578 if (info->line > (cinfo->first_line + cinfo->nports - 1))
1579 return -ENODEV;
1da177e4 1580 }
1da177e4 1581#ifdef CY_DEBUG_OTHER
21719191 1582 printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line);
1da177e4 1583#endif
02f1175c 1584 tty->driver_data = info;
15ed6cc0 1585 if (serial_paranoia_check(info, tty->name, "cy_open"))
02f1175c 1586 return -ENODEV;
15ed6cc0 1587
1da177e4 1588#ifdef CY_DEBUG_OPEN
21719191 1589 printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line,
77451e53 1590 info->port.count);
1da177e4 1591#endif
77451e53 1592 info->port.count++;
1da177e4 1593#ifdef CY_DEBUG_COUNT
21719191 1594 printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n",
77451e53 1595 current->pid, info->port.count);
1da177e4 1596#endif
1da177e4 1597
02f1175c
JS		 1598 /*
1599 * If the port is the middle of closing, bail out now
1600 */
77451e53 1601 if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) {
f309532b 1602 wait_event_interruptible_tty(info->port.close_wait,
77451e53
AC		 1603 !(info->port.flags & ASYNC_CLOSING));
1604 return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
02f1175c 1605 }
1da177e4 1606
02f1175c
JS		 1607 /*
1608 * Start up serial port
1609 */
d13549f8 1610 retval = cy_startup(info, tty);
15ed6cc0 1611 if (retval)
02f1175c 1612 return retval;
1da177e4 1613
f0737579 1614 retval = tty_port_block_til_ready(&info->port, tty, filp);
02f1175c 1615 if (retval) {
1da177e4 1616#ifdef CY_DEBUG_OPEN
21719191
JS		 1617 printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready "
1618 "with %d\n", retval);
1da177e4 1619#endif
02f1175c
JS		 1620 return retval;
1621 }
1da177e4 1622
02f1175c 1623 info->throttle = 0;
d13549f8 1624 tty_port_tty_set(&info->port, tty);
1da177e4 1625
02f1175c 1626#ifdef CY_DEBUG_OPEN
21719191 1627 printk(KERN_DEBUG "cyc:cy_open done\n");
02f1175c
JS		 1628#endif
1629 return 0;
1630} /* cy_open */
1da177e4
LT		 1631
1632/*
1633 * cy_wait_until_sent() --- wait until the transmitter is empty
1634 */
02f1175c 1635static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
1da177e4 1636{
875b206b 1637 struct cyclades_card *card;
cab9bdd1 1638 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1639 unsigned long orig_jiffies;
1640 int char_time;
1641
1642 if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
1643 return;
1644
1645 if (info->xmit_fifo_size == 0)
1646 return; /* Just in case.... */
1da177e4 1647
02f1175c
JS		 1648 orig_jiffies = jiffies;
1649 /*
1650 * Set the check interval to be 1/5 of the estimated time to
1651 * send a single character, and make it at least 1. The check
1652 * interval should also be less than the timeout.
1653 *
1654 * Note: we have to use pretty tight timings here to satisfy
1655 * the NIST-PCTS.
1656 */
1657 char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
1658 char_time = char_time / 5;
1659 if (char_time <= 0)
1660 char_time = 1;
1661 if (timeout < 0)
1662 timeout = 0;
1663 if (timeout)
1664 char_time = min(char_time, timeout);
1665 /*
1666 * If the transmitter hasn't cleared in twice the approximate
1667 * amount of time to send the entire FIFO, it probably won't
1668 * ever clear. This assumes the UART isn't doing flow
1669 * control, which is currently the case. Hence, if it ever
1670 * takes longer than info->timeout, this is probably due to a
1671 * UART bug of some kind. So, we clamp the timeout parameter at
1672 * 2*info->timeout.
1673 */
1674 if (!timeout || timeout > 2 * info->timeout)
1675 timeout = 2 * info->timeout;
8bab534b 1676
02f1175c 1677 card = info->card;
2693f485 1678 if (!cy_is_Z(card)) {
3aeea5b9 1679 while (cyy_readb(info, CySRER) & CyTxRdy) {
02f1175c
JS		 1680 if (msleep_interruptible(jiffies_to_msecs(char_time)))
1681 break;
1682 if (timeout && time_after(jiffies, orig_jiffies +
1683 timeout))
1684 break;
1685 }
1da177e4 1686 }
02f1175c
JS		 1687 /* Run one more char cycle */
1688 msleep_interruptible(jiffies_to_msecs(char_time * 5));
1da177e4
LT		 1689}
1690
978e595f
AC		 1691static void cy_flush_buffer(struct tty_struct *tty)
1692{
1693 struct cyclades_port *info = tty->driver_data;
1694 struct cyclades_card *card;
1695 int channel, retval;
1696 unsigned long flags;
1697
1698#ifdef CY_DEBUG_IO
1699 printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line);
1700#endif
1701
1702 if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
1703 return;
1704
1705 card = info->card;
1706 channel = info->line - card->first_line;
1707
1708 spin_lock_irqsave(&card->card_lock, flags);
1709 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1710 spin_unlock_irqrestore(&card->card_lock, flags);
1711
2693f485 1712 if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board
978e595f
AC		 1713 buffers as well */
1714 spin_lock_irqsave(&card->card_lock, flags);
1715 retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L);
1716 if (retval != 0) {
1717 printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d "
1718 "was %x\n", info->line, retval);
1719 }
1720 spin_unlock_irqrestore(&card->card_lock, flags);
1721 }
1722 tty_wakeup(tty);
1723} /* cy_flush_buffer */
1724
1725
e936ffd5 1726static void cy_do_close(struct tty_port *port)
1da177e4 1727{
e936ffd5
AC		 1728 struct cyclades_port *info = container_of(port, struct cyclades_port,
1729 port);
9fa1b3b1 1730 struct cyclades_card *card;
02f1175c 1731 unsigned long flags;
3aeea5b9 1732 int channel;
1da177e4 1733
9fa1b3b1 1734 card = info->card;
3aeea5b9 1735 channel = info->line - card->first_line;
9fa1b3b1 1736 spin_lock_irqsave(&card->card_lock, flags);
02f1175c 1737
2693f485 1738 if (!cy_is_Z(card)) {
02f1175c 1739 /* Stop accepting input */
3aeea5b9
JS		 1740 cyy_writeb(info, CyCAR, channel & 0x03);
1741 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);
77451e53 1742 if (info->port.flags & ASYNC_INITIALIZED) {
15ed6cc0
AC		 1743 /* Waiting for on-board buffers to be empty before
1744 closing the port */
9fa1b3b1 1745 spin_unlock_irqrestore(&card->card_lock, flags);
e936ffd5 1746 cy_wait_until_sent(port->tty, info->timeout);
9fa1b3b1 1747 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 1748 }
1749 } else {
1750#ifdef Z_WAKE
15ed6cc0
AC		 1751 /* Waiting for on-board buffers to be empty before closing
1752 the port */
f0eefdc3 1753 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
02f1175c
JS		 1754 int retval;
1755
f0eefdc3 1756 if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) {
9fa1b3b1 1757 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
02f1175c 1758 if (retval != 0) {
21719191
JS		 1759 printk(KERN_DEBUG "cyc:cy_close retval on "
1760 "ttyC%d was %x\n", info->line, retval);
02f1175c 1761 }
9fa1b3b1 1762 spin_unlock_irqrestore(&card->card_lock, flags);
2c7fea99 1763 wait_for_completion_interruptible(&info->shutdown_wait);
9fa1b3b1 1764 spin_lock_irqsave(&card->card_lock, flags);
02f1175c 1765 }
1da177e4 1766#endif
02f1175c 1767 }
9fa1b3b1 1768 spin_unlock_irqrestore(&card->card_lock, flags);
e936ffd5
AC		 1769 cy_shutdown(info, port->tty);
1770}
1da177e4 1771
e936ffd5
AC		 1772/*
1773 * This routine is called when a particular tty device is closed.
1774 */
1775static void cy_close(struct tty_struct *tty, struct file *filp)
1776{
1777 struct cyclades_port *info = tty->driver_data;
1778 if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
1779 return;
1780 tty_port_close(&info->port, tty, filp);
02f1175c 1781} /* cy_close */
1da177e4
LT		 1782
1783/* This routine gets called when tty_write has put something into
1784 * the write_queue. The characters may come from user space or
1785 * kernel space.
1786 *
1787 * This routine will return the number of characters actually
1788 * accepted for writing.
1789 *
1790 * If the port is not already transmitting stuff, start it off by
1791 * enabling interrupts. The interrupt service routine will then
1792 * ensure that the characters are sent.
1793 * If the port is already active, there is no need to kick it.
1794 *
1795 */
02f1175c 1796static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
1da177e4 1797{
cab9bdd1 1798 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1799 unsigned long flags;
1800 int c, ret = 0;
1da177e4
LT		 1801
1802#ifdef CY_DEBUG_IO
21719191 1803 printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line);
1da177e4
LT		 1804#endif
1805
15ed6cc0 1806 if (serial_paranoia_check(info, tty->name, "cy_write"))
02f1175c 1807 return 0;
1da177e4 1808
77451e53 1809 if (!info->port.xmit_buf)
02f1175c 1810 return 0;
1da177e4 1811
9fa1b3b1 1812 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 1813 while (1) {
1a4e2351
HH		 1814 c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1));
1815 c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head));
02f1175c
JS		 1816
1817 if (c <= 0)
1818 break;
1819
77451e53 1820 memcpy(info->port.xmit_buf + info->xmit_head, buf, c);
02f1175c
JS		 1821 info->xmit_head = (info->xmit_head + c) &
1822 (SERIAL_XMIT_SIZE - 1);
1823 info->xmit_cnt += c;
1824 buf += c;
1825 count -= c;
1826 ret += c;
1827 }
9fa1b3b1 1828 spin_unlock_irqrestore(&info->card->card_lock, flags);
02f1175c
JS		 1829
1830 info->idle_stats.xmit_bytes += ret;
1831 info->idle_stats.xmit_idle = jiffies;
1832
15ed6cc0 1833 if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped)
02f1175c 1834 start_xmit(info);
15ed6cc0 1835
02f1175c
JS		 1836 return ret;
1837} /* cy_write */
1da177e4
LT		 1838
1839/*
1840 * This routine is called by the kernel to write a single
1841 * character to the tty device. If the kernel uses this routine,
1842 * it must call the flush_chars() routine (if defined) when it is
1843 * done stuffing characters into the driver. If there is no room
1844 * in the queue, the character is ignored.
1845 */
76b25a55 1846static int cy_put_char(struct tty_struct *tty, unsigned char ch)
1da177e4 1847{
cab9bdd1 1848 struct cyclades_port *info = tty->driver_data;
02f1175c 1849 unsigned long flags;
1da177e4
LT		 1850
1851#ifdef CY_DEBUG_IO
21719191 1852 printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line);
1da177e4
LT		 1853#endif
1854
02f1175c 1855 if (serial_paranoia_check(info, tty->name, "cy_put_char"))
76b25a55 1856 return 0;
1da177e4 1857
77451e53 1858 if (!info->port.xmit_buf)
76b25a55 1859 return 0;
1da177e4 1860
9fa1b3b1 1861 spin_lock_irqsave(&info->card->card_lock, flags);
90cc3018 1862 if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) {
9fa1b3b1 1863 spin_unlock_irqrestore(&info->card->card_lock, flags);
76b25a55 1864 return 0;
02f1175c 1865 }
1da177e4 1866
77451e53 1867 info->port.xmit_buf[info->xmit_head++] = ch;
02f1175c
JS		 1868 info->xmit_head &= SERIAL_XMIT_SIZE - 1;
1869 info->xmit_cnt++;
1da177e4
LT		 1870 info->idle_stats.xmit_bytes++;
1871 info->idle_stats.xmit_idle = jiffies;
9fa1b3b1 1872 spin_unlock_irqrestore(&info->card->card_lock, flags);
76b25a55 1873 return 1;
02f1175c 1874} /* cy_put_char */
1da177e4
LT		 1875
1876/*
1877 * This routine is called by the kernel after it has written a
15ed6cc0 1878 * series of characters to the tty device using put_char().
1da177e4 1879 */
02f1175c 1880static void cy_flush_chars(struct tty_struct *tty)
1da177e4 1881{
cab9bdd1 1882 struct cyclades_port *info = tty->driver_data;
02f1175c 1883
1da177e4 1884#ifdef CY_DEBUG_IO
21719191 1885 printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line);
1da177e4
LT		 1886#endif
1887
02f1175c
JS		 1888 if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
1889 return;
1da177e4 1890
02f1175c 1891 if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
77451e53 1892 !info->port.xmit_buf)
02f1175c 1893 return;
1da177e4 1894
02f1175c
JS		 1895 start_xmit(info);
1896} /* cy_flush_chars */
1da177e4
LT		 1897
1898/*
1899 * This routine returns the numbers of characters the tty driver
1900 * will accept for queuing to be written. This number is subject
1901 * to change as output buffers get emptied, or if the output flow
1902 * control is activated.
1903 */
02f1175c 1904static int cy_write_room(struct tty_struct *tty)
1da177e4 1905{
cab9bdd1 1906 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1907 int ret;
1908
1da177e4 1909#ifdef CY_DEBUG_IO
21719191 1910 printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line);
1da177e4
LT		 1911#endif
1912
02f1175c
JS		 1913 if (serial_paranoia_check(info, tty->name, "cy_write_room"))
1914 return 0;
1915 ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
1916 if (ret < 0)
1917 ret = 0;
1918 return ret;
1919} /* cy_write_room */
1da177e4 1920
02f1175c 1921static int cy_chars_in_buffer(struct tty_struct *tty)
1da177e4 1922{
cab9bdd1 1923 struct cyclades_port *info = tty->driver_data;
1da177e4 1924
02f1175c
JS		 1925 if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
1926 return 0;
1927
1da177e4 1928#ifdef Z_EXT_CHARS_IN_BUFFER
f0eefdc3 1929 if (!cy_is_Z(info->card)) {
02f1175c 1930#endif /* Z_EXT_CHARS_IN_BUFFER */
1da177e4 1931#ifdef CY_DEBUG_IO
21719191
JS		 1932 printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
1933 info->line, info->xmit_cnt);
1da177e4 1934#endif
02f1175c 1935 return info->xmit_cnt;
1da177e4 1936#ifdef Z_EXT_CHARS_IN_BUFFER
02f1175c 1937 } else {
f0eefdc3 1938 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
02f1175c 1939 int char_count;
ad39c300 1940 __u32 tx_put, tx_get, tx_bufsize;
02f1175c 1941
db05c3b1
JS		 1942 tx_get = readl(&buf_ctrl->tx_get);
1943 tx_put = readl(&buf_ctrl->tx_put);
1944 tx_bufsize = readl(&buf_ctrl->tx_bufsize);
02f1175c
JS		 1945 if (tx_put >= tx_get)
1946 char_count = tx_put - tx_get;
1947 else
1948 char_count = tx_put - tx_get + tx_bufsize;
1da177e4 1949#ifdef CY_DEBUG_IO
21719191
JS		 1950 printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
1951 info->line, info->xmit_cnt + char_count);
1da177e4 1952#endif
096dcfce 1953 return info->xmit_cnt + char_count;
02f1175c
JS		 1954 }
1955#endif /* Z_EXT_CHARS_IN_BUFFER */
1956} /* cy_chars_in_buffer */
1da177e4
LT		 1957
1958/*
1959 * ------------------------------------------------------------
1960 * cy_ioctl() and friends
1961 * ------------------------------------------------------------
1962 */
1963
1a86b5e3 1964static void cyy_baud_calc(struct cyclades_port *info, __u32 baud)
1da177e4 1965{
02f1175c 1966 int co, co_val, bpr;
1a86b5e3 1967 __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 :
02f1175c 1968 25000000);
1da177e4 1969
02f1175c
JS		 1970 if (baud == 0) {
1971 info->tbpr = info->tco = info->rbpr = info->rco = 0;
1972 return;
1973 }
1da177e4 1974
02f1175c
JS		 1975 /* determine which prescaler to use */
1976 for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
1977 if (cy_clock / co_val / baud > 63)
1978 break;
1979 }
1da177e4 1980
02f1175c
JS		 1981 bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
1982 if (bpr > 255)
1983 bpr = 255;
1da177e4 1984
02f1175c
JS		 1985 info->tbpr = info->rbpr = bpr;
1986 info->tco = info->rco = co;
1da177e4
LT		 1987}
1988
1989/*
1990 * This routine finds or computes the various line characteristics.
1991 * It used to be called config_setup
1992 */
d13549f8 1993static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1994{
875b206b 1995 struct cyclades_card *card;
02f1175c 1996 unsigned long flags;
3aeea5b9 1997 int channel;
02f1175c 1998 unsigned cflag, iflag;
02f1175c
JS		 1999 int baud, baud_rate = 0;
2000 int i;
2001
d13549f8 2002 if (!tty->termios) /* XXX can this happen at all? */
02f1175c 2003 return;
15ed6cc0
AC		 2004
2005 if (info->line == -1)
02f1175c 2006 return;
15ed6cc0 2007
d13549f8
JS		 2008 cflag = tty->termios->c_cflag;
2009 iflag = tty->termios->c_iflag;
1da177e4 2010
02f1175c
JS		 2011 /*
2012 * Set up the tty->alt_speed kludge
2013 */
d13549f8
JS		 2014 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2015 tty->alt_speed = 57600;
2016 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2017 tty->alt_speed = 115200;
2018 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2019 tty->alt_speed = 230400;
2020 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2021 tty->alt_speed = 460800;
02f1175c
JS		 2022
2023 card = info->card;
875b206b 2024 channel = info->line - card->first_line;
02f1175c 2025
2693f485 2026 if (!cy_is_Z(card)) {
46fb7825
JS		 2027 u32 cflags;
2028
02f1175c 2029 /* baud rate */
d13549f8 2030 baud = tty_get_baud_rate(tty);
77451e53 2031 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2032 ASYNC_SPD_CUST) {
2033 if (info->custom_divisor)
2034 baud_rate = info->baud / info->custom_divisor;
2035 else
2036 baud_rate = info->baud;
2037 } else if (baud > CD1400_MAX_SPEED) {
2038 baud = CD1400_MAX_SPEED;
2039 }
2040 /* find the baud index */
2041 for (i = 0; i < 20; i++) {
15ed6cc0 2042 if (baud == baud_table[i])
02f1175c 2043 break;
02f1175c 2044 }
15ed6cc0 2045 if (i == 20)
02f1175c 2046 i = 19; /* CD1400_MAX_SPEED */
02f1175c 2047
77451e53 2048 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2049 ASYNC_SPD_CUST) {
2050 cyy_baud_calc(info, baud_rate);
2051 } else {
2052 if (info->chip_rev >= CD1400_REV_J) {
2053 /* It is a CD1400 rev. J or later */
2054 info->tbpr = baud_bpr_60[i]; /* Tx BPR */
2055 info->tco = baud_co_60[i]; /* Tx CO */
2056 info->rbpr = baud_bpr_60[i]; /* Rx BPR */
2057 info->rco = baud_co_60[i]; /* Rx CO */
2058 } else {
2059 info->tbpr = baud_bpr_25[i]; /* Tx BPR */
2060 info->tco = baud_co_25[i]; /* Tx CO */
2061 info->rbpr = baud_bpr_25[i]; /* Rx BPR */
2062 info->rco = baud_co_25[i]; /* Rx CO */
2063 }
2064 }
2065 if (baud_table[i] == 134) {
2066 /* get it right for 134.5 baud */
2067 info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
2068 2;
77451e53 2069 } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2070 ASYNC_SPD_CUST) {
2071 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2072 baud_rate) + 2;
2073 } else if (baud_table[i]) {
2074 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2075 baud_table[i]) + 2;
2076 /* this needs to be propagated into the card info */
2077 } else {
2078 info->timeout = 0;
2079 }
2080 /* By tradition (is it a standard?) a baud rate of zero
2081 implies the line should be/has been closed. A bit
2082 later in this routine such a test is performed. */
2083
2084 /* byte size and parity */
2085 info->cor5 = 0;
2086 info->cor4 = 0;
2087 /* receive threshold */
2088 info->cor3 = (info->default_threshold ?
2089 info->default_threshold : baud_cor3[i]);
2090 info->cor2 = CyETC;
2091 switch (cflag & CSIZE) {
2092 case CS5:
2093 info->cor1 = Cy_5_BITS;
2094 break;
2095 case CS6:
2096 info->cor1 = Cy_6_BITS;
2097 break;
2098 case CS7:
2099 info->cor1 = Cy_7_BITS;
2100 break;
2101 case CS8:
2102 info->cor1 = Cy_8_BITS;
2103 break;
2104 }
15ed6cc0 2105 if (cflag & CSTOPB)
02f1175c 2106 info->cor1 |= Cy_2_STOP;
15ed6cc0 2107
02f1175c 2108 if (cflag & PARENB) {
15ed6cc0 2109 if (cflag & PARODD)
02f1175c 2110 info->cor1 |= CyPARITY_O;
15ed6cc0 2111 else
02f1175c 2112 info->cor1 |= CyPARITY_E;
15ed6cc0 2113 } else
02f1175c 2114 info->cor1 |= CyPARITY_NONE;
02f1175c
JS		 2115
2116 /* CTS flow control flag */
2117 if (cflag & CRTSCTS) {
77451e53 2118 info->port.flags |= ASYNC_CTS_FLOW;
02f1175c
JS		 2119 info->cor2 |= CyCtsAE;
2120 } else {
77451e53 2121 info->port.flags &= ~ASYNC_CTS_FLOW;
02f1175c
JS		 2122 info->cor2 &= ~CyCtsAE;
2123 }
2124 if (cflag & CLOCAL)
77451e53 2125 info->port.flags &= ~ASYNC_CHECK_CD;
02f1175c 2126 else
77451e53 2127 info->port.flags |= ASYNC_CHECK_CD;
1da177e4
LT		 2128
2129 /***********************************************
2130 The hardware option, CyRtsAO, presents RTS when
2131 the chip has characters to send. Since most modems
2132 use RTS as reverse (inbound) flow control, this
2133 option is not used. If inbound flow control is
2134 necessary, DTR can be programmed to provide the
2135 appropriate signals for use with a non-standard
2136 cable. Contact Marcio Saito for details.
2137 ***********************************************/
2138
02f1175c 2139 channel &= 0x03;
1da177e4 2140
9fa1b3b1 2141 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2142 cyy_writeb(info, CyCAR, channel);
02f1175c
JS		 2143
2144 /* tx and rx baud rate */
2145
3aeea5b9
JS		 2146 cyy_writeb(info, CyTCOR, info->tco);
2147 cyy_writeb(info, CyTBPR, info->tbpr);
2148 cyy_writeb(info, CyRCOR, info->rco);
2149 cyy_writeb(info, CyRBPR, info->rbpr);
02f1175c
JS		 2150
2151 /* set line characteristics according configuration */
2152
3aeea5b9
JS		 2153 cyy_writeb(info, CySCHR1, START_CHAR(tty));
2154 cyy_writeb(info, CySCHR2, STOP_CHAR(tty));
2155 cyy_writeb(info, CyCOR1, info->cor1);
2156 cyy_writeb(info, CyCOR2, info->cor2);
2157 cyy_writeb(info, CyCOR3, info->cor3);
2158 cyy_writeb(info, CyCOR4, info->cor4);
2159 cyy_writeb(info, CyCOR5, info->cor5);
02f1175c 2160
3aeea5b9
JS		 2161 cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
2162 CyCOR3ch);
02f1175c 2163
15ed6cc0 2164 /* !!! Is this needed? */
3aeea5b9
JS		 2165 cyy_writeb(info, CyCAR, channel);
2166 cyy_writeb(info, CyRTPR,
02f1175c
JS		 2167 (info->default_timeout ? info->default_timeout : 0x02));
2168 /* 10ms rx timeout */
2169
46fb7825
JS		 2170 cflags = CyCTS;
2171 if (!C_CLOCAL(tty))
2172 cflags |= CyDSR | CyRI | CyDCD;
2173 /* without modem intr */
2174 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyMdmCh);
2175 /* act on 1->0 modem transitions */
2176 if ((cflag & CRTSCTS) && info->rflow)
2177 cyy_writeb(info, CyMCOR1, cflags | rflow_thr[i]);
2178 else
2179 cyy_writeb(info, CyMCOR1, cflags);
2180 /* act on 0->1 modem transitions */
2181 cyy_writeb(info, CyMCOR2, cflags);
02f1175c 2182
4d768200
JS		 2183 if (i == 0) /* baud rate is zero, turn off line */
2184 cyy_change_rts_dtr(info, 0, TIOCM_DTR);
2185 else
2186 cyy_change_rts_dtr(info, TIOCM_DTR, 0);
1da177e4 2187
d13549f8 2188 clear_bit(TTY_IO_ERROR, &tty->flags);
9fa1b3b1 2189 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4 2190
1da177e4 2191 } else {
f0eefdc3 2192 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
1a86b5e3 2193 __u32 sw_flow;
02f1175c 2194 int retval;
1da177e4 2195
2693f485 2196 if (!cyz_is_loaded(card))
02f1175c 2197 return;
1da177e4 2198
02f1175c 2199 /* baud rate */
d13549f8 2200 baud = tty_get_baud_rate(tty);
77451e53 2201 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2202 ASYNC_SPD_CUST) {
2203 if (info->custom_divisor)
2204 baud_rate = info->baud / info->custom_divisor;
2205 else
2206 baud_rate = info->baud;
2207 } else if (baud > CYZ_MAX_SPEED) {
2208 baud = CYZ_MAX_SPEED;
2209 }
2210 cy_writel(&ch_ctrl->comm_baud, baud);
2211
2212 if (baud == 134) {
2213 /* get it right for 134.5 baud */
2214 info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
2215 2;
77451e53 2216 } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2217 ASYNC_SPD_CUST) {
2218 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2219 baud_rate) + 2;
2220 } else if (baud) {
2221 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2222 baud) + 2;
2223 /* this needs to be propagated into the card info */
2224 } else {
2225 info->timeout = 0;
2226 }
1da177e4 2227
02f1175c
JS		 2228 /* byte size and parity */
2229 switch (cflag & CSIZE) {
2230 case CS5:
2231 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5);
2232 break;
2233 case CS6:
2234 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6);
2235 break;
2236 case CS7:
2237 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7);
2238 break;
2239 case CS8:
2240 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8);
2241 break;
2242 }
2243 if (cflag & CSTOPB) {
2244 cy_writel(&ch_ctrl->comm_data_l,
db05c3b1 2245 readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
02f1175c
JS		 2246 } else {
2247 cy_writel(&ch_ctrl->comm_data_l,
db05c3b1 2248 readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
02f1175c
JS		 2249 }
2250 if (cflag & PARENB) {
15ed6cc0 2251 if (cflag & PARODD)
02f1175c 2252 cy_writel(&ch_ctrl->comm_parity, C_PR_ODD);
15ed6cc0 2253 else
02f1175c 2254 cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN);
15ed6cc0 2255 } else
02f1175c 2256 cy_writel(&ch_ctrl->comm_parity, C_PR_NONE);
1da177e4 2257
02f1175c
JS		 2258 /* CTS flow control flag */
2259 if (cflag & CRTSCTS) {
2260 cy_writel(&ch_ctrl->hw_flow,
db05c3b1 2261 readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
02f1175c 2262 } else {
db05c3b1
JS		 2263 cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) &
2264 ~(C_RS_CTS | C_RS_RTS));
02f1175c
JS		 2265 }
2266 /* As the HW flow control is done in firmware, the driver
2267 doesn't need to care about it */
77451e53 2268 info->port.flags &= ~ASYNC_CTS_FLOW;
02f1175c
JS		 2269
2270 /* XON/XOFF/XANY flow control flags */
2271 sw_flow = 0;
2272 if (iflag & IXON) {
2273 sw_flow |= C_FL_OXX;
2274 if (iflag & IXANY)
2275 sw_flow |= C_FL_OIXANY;
2276 }
2277 cy_writel(&ch_ctrl->sw_flow, sw_flow);
2278
875b206b 2279 retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
02f1175c 2280 if (retval != 0) {
21719191
JS		 2281 printk(KERN_ERR "cyc:set_line_char retval on ttyC%d "
2282 "was %x\n", info->line, retval);
02f1175c
JS		 2283 }
2284
2285 /* CD sensitivity */
15ed6cc0 2286 if (cflag & CLOCAL)
77451e53 2287 info->port.flags &= ~ASYNC_CHECK_CD;
15ed6cc0 2288 else
77451e53 2289 info->port.flags |= ASYNC_CHECK_CD;
1da177e4 2290
02f1175c
JS		 2291 if (baud == 0) { /* baud rate is zero, turn off line */
2292 cy_writel(&ch_ctrl->rs_control,
db05c3b1 2293 readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
1da177e4 2294#ifdef CY_DEBUG_DTR
21719191 2295 printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n");
1da177e4 2296#endif
02f1175c
JS		 2297 } else {
2298 cy_writel(&ch_ctrl->rs_control,
db05c3b1 2299 readl(&ch_ctrl->rs_control) | C_RS_DTR);
1da177e4 2300#ifdef CY_DEBUG_DTR
21719191 2301 printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n");
1da177e4 2302#endif
02f1175c 2303 }
1da177e4 2304
15ed6cc0 2305 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
02f1175c 2306 if (retval != 0) {
21719191
JS		 2307 printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d "
2308 "was %x\n", info->line, retval);
02f1175c 2309 }
1da177e4 2310
d13549f8 2311 clear_bit(TTY_IO_ERROR, &tty->flags);
1da177e4 2312 }
02f1175c 2313} /* set_line_char */
1da177e4 2314
6c28181c 2315static int cy_get_serial_info(struct cyclades_port *info,
15ed6cc0 2316 struct serial_struct __user *retinfo)
1da177e4 2317{
875b206b 2318 struct cyclades_card *cinfo = info->card;
6c28181c
JS		 2319 struct serial_struct tmp = {
2320 .type = info->type,
2321 .line = info->line,
2322 .port = (info->card - cy_card) * 0x100 + info->line -
2323 cinfo->first_line,
2324 .irq = cinfo->irq,
2325 .flags = info->port.flags,
2326 .close_delay = info->port.close_delay,
2327 .closing_wait = info->port.closing_wait,
2328 .baud_base = info->baud,
2329 .custom_divisor = info->custom_divisor,
2330 .hub6 = 0, /*!!! */
2331 };
02f1175c 2332 return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
6c28181c 2333}
1da177e4
LT		 2334
2335static int
d13549f8 2336cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
15ed6cc0 2337 struct serial_struct __user *new_info)
1da177e4 2338{
02f1175c 2339 struct serial_struct new_serial;
25c3cdf8 2340 int ret;
02f1175c
JS		 2341
2342 if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2343 return -EFAULT;
02f1175c 2344
25c3cdf8 2345 mutex_lock(&info->port.mutex);
02f1175c 2346 if (!capable(CAP_SYS_ADMIN)) {
44b7d1b3 2347 if (new_serial.close_delay != info->port.close_delay ||
02f1175c
JS		 2348 new_serial.baud_base != info->baud ||
2349 (new_serial.flags & ASYNC_FLAGS &
2350 ~ASYNC_USR_MASK) !=
77451e53 2351 (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))
25c3cdf8
AC		 2352 {
2353 mutex_unlock(&info->port.mutex);
02f1175c 2354 return -EPERM;
25c3cdf8 2355 }
77451e53 2356 info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) |
02f1175c
JS		 2357 (new_serial.flags & ASYNC_USR_MASK);
2358 info->baud = new_serial.baud_base;
2359 info->custom_divisor = new_serial.custom_divisor;
2360 goto check_and_exit;
2361 }
2362
2363 /*
2364 * OK, past this point, all the error checking has been done.
2365 * At this point, we start making changes.....
2366 */
2367
2368 info->baud = new_serial.baud_base;
2369 info->custom_divisor = new_serial.custom_divisor;
77451e53 2370 info->port.flags = (info->port.flags & ~ASYNC_FLAGS) |
02f1175c 2371 (new_serial.flags & ASYNC_FLAGS);
44b7d1b3
AC		 2372 info->port.close_delay = new_serial.close_delay * HZ / 100;
2373 info->port.closing_wait = new_serial.closing_wait * HZ / 100;
1da177e4
LT		 2374
2375check_and_exit:
77451e53 2376 if (info->port.flags & ASYNC_INITIALIZED) {
d13549f8 2377 cy_set_line_char(info, tty);
25c3cdf8 2378 ret = 0;
02f1175c 2379 } else {
25c3cdf8 2380 ret = cy_startup(info, tty);
02f1175c 2381 }
25c3cdf8
AC		 2382 mutex_unlock(&info->port.mutex);
2383 return ret;
02f1175c 2384} /* set_serial_info */
1da177e4
LT		 2385
2386/*
2387 * get_lsr_info - get line status register info
2388 *
2389 * Purpose: Let user call ioctl() to get info when the UART physically
2390 * is emptied. On bus types like RS485, the transmitter must
2391 * release the bus after transmitting. This must be done when
2392 * the transmit shift register is empty, not be done when the
2393 * transmit holding register is empty. This functionality
2394 * allows an RS485 driver to be written in user space.
2395 */
15ed6cc0 2396static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
1da177e4 2397{
3aeea5b9 2398 struct cyclades_card *card = info->card;
02f1175c
JS		 2399 unsigned int result;
2400 unsigned long flags;
3aeea5b9 2401 u8 status;
1da177e4 2402
2693f485 2403 if (!cy_is_Z(card)) {
9fa1b3b1 2404 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2405 status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty);
9fa1b3b1 2406 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2407 result = (status ? 0 : TIOCSER_TEMT);
2408 } else {
2409 /* Not supported yet */
2410 return -EINVAL;
2411 }
dbca36ea 2412 return put_user(result, value);
1da177e4
LT		 2413}
2414
60b33c13 2415static int cy_tiocmget(struct tty_struct *tty)
1da177e4 2416{
cab9bdd1 2417 struct cyclades_port *info = tty->driver_data;
875b206b 2418 struct cyclades_card *card;
3aeea5b9 2419 int result;
02f1175c 2420
bf9d8929 2421 if (serial_paranoia_check(info, tty->name, __func__))
02f1175c 2422 return -ENODEV;
1da177e4 2423
02f1175c 2424 card = info->card;
0d348729 2425
2693f485 2426 if (!cy_is_Z(card)) {
0d348729 2427 unsigned long flags;
3aeea5b9
JS		 2428 int channel = info->line - card->first_line;
2429 u8 status;
1da177e4 2430
9fa1b3b1 2431 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 2432 cyy_writeb(info, CyCAR, channel & 0x03);
2433 status = cyy_readb(info, CyMSVR1);
2434 status |= cyy_readb(info, CyMSVR2);
9fa1b3b1 2435 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2436
2437 if (info->rtsdtr_inv) {
2438 result = ((status & CyRTS) ? TIOCM_DTR : 0) |
2439 ((status & CyDTR) ? TIOCM_RTS : 0);
2440 } else {
2441 result = ((status & CyRTS) ? TIOCM_RTS : 0) |
2442 ((status & CyDTR) ? TIOCM_DTR : 0);
2443 }
2444 result |= ((status & CyDCD) ? TIOCM_CAR : 0) |
2445 ((status & CyRI) ? TIOCM_RNG : 0) |
2446 ((status & CyDSR) ? TIOCM_DSR : 0) |
2447 ((status & CyCTS) ? TIOCM_CTS : 0);
1da177e4 2448 } else {
0d348729
JS		 2449 u32 lstatus;
2450
2451 if (!cyz_is_loaded(card)) {
2452 result = -ENODEV;
2453 goto end;
02f1175c 2454 }
1da177e4 2455
0d348729
JS		 2456 lstatus = readl(&info->u.cyz.ch_ctrl->rs_status);
2457 result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
2458 ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
2459 ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
2460 ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
2461 ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
2462 ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
02f1175c 2463 }
0d348729 2464end:
02f1175c
JS		 2465 return result;
2466} /* cy_tiomget */
1da177e4
LT		 2467
2468static int
20b9d177 2469cy_tiocmset(struct tty_struct *tty,
02f1175c 2470 unsigned int set, unsigned int clear)
1da177e4 2471{
cab9bdd1 2472 struct cyclades_port *info = tty->driver_data;
875b206b 2473 struct cyclades_card *card;
02f1175c 2474 unsigned long flags;
02f1175c 2475
bf9d8929 2476 if (serial_paranoia_check(info, tty->name, __func__))
02f1175c
JS		 2477 return -ENODEV;
2478
2479 card = info->card;
2693f485 2480 if (!cy_is_Z(card)) {
4d768200
JS		 2481 spin_lock_irqsave(&card->card_lock, flags);
2482 cyy_change_rts_dtr(info, set, clear);
2483 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2484 } else {
0d348729
JS		 2485 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
2486 int retval, channel = info->line - card->first_line;
2487 u32 rs;
2488
2489 if (!cyz_is_loaded(card))
2490 return -ENODEV;
2491
2492 spin_lock_irqsave(&card->card_lock, flags);
2493 rs = readl(&ch_ctrl->rs_control);
2494 if (set & TIOCM_RTS)
2495 rs |= C_RS_RTS;
2496 if (clear & TIOCM_RTS)
2497 rs &= ~C_RS_RTS;
2498 if (set & TIOCM_DTR) {
2499 rs |= C_RS_DTR;
1da177e4 2500#ifdef CY_DEBUG_DTR
0d348729 2501 printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n");
1da177e4 2502#endif
0d348729
JS		 2503 }
2504 if (clear & TIOCM_DTR) {
2505 rs &= ~C_RS_DTR;
1da177e4 2506#ifdef CY_DEBUG_DTR
0d348729
JS		 2507 printk(KERN_DEBUG "cyc:set_modem_info clearing "
2508 "Z DTR\n");
1da177e4 2509#endif
02f1175c 2510 }
0d348729 2511 cy_writel(&ch_ctrl->rs_control, rs);
9fa1b3b1 2512 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
0d348729 2513 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2514 if (retval != 0) {
21719191
JS		 2515 printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
2516 "was %x\n", info->line, retval);
02f1175c 2517 }
1da177e4 2518 }
02f1175c 2519 return 0;
0d348729 2520}
1da177e4
LT		 2521
2522/*
2523 * cy_break() --- routine which turns the break handling on or off
2524 */
9e98966c 2525static int cy_break(struct tty_struct *tty, int break_state)
1da177e4 2526{
cab9bdd1 2527 struct cyclades_port *info = tty->driver_data;
9fa1b3b1 2528 struct cyclades_card *card;
02f1175c 2529 unsigned long flags;
9e98966c 2530 int retval = 0;
1da177e4 2531
02f1175c 2532 if (serial_paranoia_check(info, tty->name, "cy_break"))
9e98966c 2533 return -EINVAL;
1da177e4 2534
9fa1b3b1
JS		 2535 card = info->card;
2536
2537 spin_lock_irqsave(&card->card_lock, flags);
2693f485 2538 if (!cy_is_Z(card)) {
02f1175c
JS		 2539 /* Let the transmit ISR take care of this (since it
2540 requires stuffing characters into the output stream).
2541 */
2542 if (break_state == -1) {
2543 if (!info->breakon) {
2544 info->breakon = 1;
2545 if (!info->xmit_cnt) {
9fa1b3b1 2546 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2547 start_xmit(info);
9fa1b3b1 2548 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 2549 }
2550 }
2551 } else {
2552 if (!info->breakoff) {
2553 info->breakoff = 1;
2554 if (!info->xmit_cnt) {
9fa1b3b1 2555 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2556 start_xmit(info);
9fa1b3b1 2557 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 2558 }
2559 }
1da177e4 2560 }
1da177e4 2561 } else {
02f1175c 2562 if (break_state == -1) {
9fa1b3b1
JS		 2563 retval = cyz_issue_cmd(card,
2564 info->line - card->first_line,
02f1175c
JS		 2565 C_CM_SET_BREAK, 0L);
2566 if (retval != 0) {
21719191
JS		 2567 printk(KERN_ERR "cyc:cy_break (set) retval on "
2568 "ttyC%d was %x\n", info->line, retval);
02f1175c
JS		 2569 }
2570 } else {
9fa1b3b1
JS		 2571 retval = cyz_issue_cmd(card,
2572 info->line - card->first_line,
02f1175c
JS		 2573 C_CM_CLR_BREAK, 0L);
2574 if (retval != 0) {
21719191
JS		 2575 printk(KERN_DEBUG "cyc:cy_break (clr) retval "
2576 "on ttyC%d was %x\n", info->line,
2577 retval);
02f1175c 2578 }
1da177e4 2579 }
1da177e4 2580 }
9fa1b3b1 2581 spin_unlock_irqrestore(&card->card_lock, flags);
9e98966c 2582 return retval;
02f1175c 2583} /* cy_break */
1da177e4 2584
02f1175c 2585static int set_threshold(struct cyclades_port *info, unsigned long value)
1da177e4 2586{
3aeea5b9 2587 struct cyclades_card *card = info->card;
02f1175c 2588 unsigned long flags;
1da177e4 2589
2693f485 2590 if (!cy_is_Z(card)) {
02f1175c
JS		 2591 info->cor3 &= ~CyREC_FIFO;
2592 info->cor3 |= value & CyREC_FIFO;
1da177e4 2593
9fa1b3b1 2594 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 2595 cyy_writeb(info, CyCOR3, info->cor3);
2596 cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch);
9fa1b3b1 2597 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2598 }
2599 return 0;
2600} /* set_threshold */
1da177e4 2601
15ed6cc0
AC		 2602static int get_threshold(struct cyclades_port *info,
2603 unsigned long __user *value)
1da177e4 2604{
3aeea5b9 2605 struct cyclades_card *card = info->card;
1da177e4 2606
2693f485 2607 if (!cy_is_Z(card)) {
3aeea5b9 2608 u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO;
02f1175c 2609 return put_user(tmp, value);
02f1175c 2610 }
f7429034 2611 return 0;
02f1175c 2612} /* get_threshold */
1da177e4 2613
02f1175c 2614static int set_timeout(struct cyclades_port *info, unsigned long value)
1da177e4 2615{
3aeea5b9 2616 struct cyclades_card *card = info->card;
02f1175c 2617 unsigned long flags;
1da177e4 2618
2693f485 2619 if (!cy_is_Z(card)) {
9fa1b3b1 2620 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2621 cyy_writeb(info, CyRTPR, value & 0xff);
9fa1b3b1 2622 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2623 }
2624 return 0;
2625} /* set_timeout */
1da177e4 2626
15ed6cc0
AC		 2627static int get_timeout(struct cyclades_port *info,
2628 unsigned long __user *value)
1da177e4 2629{
3aeea5b9 2630 struct cyclades_card *card = info->card;
1da177e4 2631
2693f485 2632 if (!cy_is_Z(card)) {
3aeea5b9 2633 u8 tmp = cyy_readb(info, CyRTPR);
02f1175c 2634 return put_user(tmp, value);
02f1175c 2635 }
f7429034 2636 return 0;
02f1175c 2637} /* get_timeout */
1da177e4 2638
6c28181c
JS		 2639static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg,
2640 struct cyclades_icount *cprev)
1da177e4 2641{
6c28181c
JS		 2642 struct cyclades_icount cnow;
2643 unsigned long flags;
2644 int ret;
1da177e4 2645
6c28181c
JS		 2646 spin_lock_irqsave(&info->card->card_lock, flags);
2647 cnow = info->icount; /* atomic copy */
2648 spin_unlock_irqrestore(&info->card->card_lock, flags);
2649
2650 ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
2651 ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
2652 ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) ||
2653 ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
2654
2655 *cprev = cnow;
2656
2657 return ret;
2658}
1da177e4
LT		 2659
2660/*
2661 * This routine allows the tty driver to implement device-
2662 * specific ioctl's. If the ioctl number passed in cmd is
2663 * not recognized by the driver, it should return ENOIOCTLCMD.
2664 */
2665static int
6caa76b7 2666cy_ioctl(struct tty_struct *tty,
02f1175c 2667 unsigned int cmd, unsigned long arg)
1da177e4 2668{
cab9bdd1 2669 struct cyclades_port *info = tty->driver_data;
6c28181c 2670 struct cyclades_icount cnow; /* kernel counter temps */
02f1175c
JS		 2671 int ret_val = 0;
2672 unsigned long flags;
2673 void __user *argp = (void __user *)arg;
2674
2675 if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
2676 return -ENODEV;
1da177e4
LT		 2677
2678#ifdef CY_DEBUG_OTHER
21719191
JS		 2679 printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
2680 info->line, cmd, arg);
1da177e4
LT		 2681#endif
2682
02f1175c
JS		 2683 switch (cmd) {
2684 case CYGETMON:
6c28181c
JS		 2685 if (copy_to_user(argp, &info->mon, sizeof(info->mon))) {
2686 ret_val = -EFAULT;
2687 break;
2688 }
2689 memset(&info->mon, 0, sizeof(info->mon));
02f1175c
JS		 2690 break;
2691 case CYGETTHRESH:
2692 ret_val = get_threshold(info, argp);
2693 break;
2694 case CYSETTHRESH:
2695 ret_val = set_threshold(info, arg);
2696 break;
2697 case CYGETDEFTHRESH:
6c28181c
JS		 2698 ret_val = put_user(info->default_threshold,
2699 (unsigned long __user *)argp);
02f1175c
JS		 2700 break;
2701 case CYSETDEFTHRESH:
6c28181c 2702 info->default_threshold = arg & 0x0f;
02f1175c
JS		 2703 break;
2704 case CYGETTIMEOUT:
2705 ret_val = get_timeout(info, argp);
2706 break;
2707 case CYSETTIMEOUT:
2708 ret_val = set_timeout(info, arg);
2709 break;
2710 case CYGETDEFTIMEOUT:
6c28181c
JS		 2711 ret_val = put_user(info->default_timeout,
2712 (unsigned long __user *)argp);
02f1175c
JS		 2713 break;
2714 case CYSETDEFTIMEOUT:
6c28181c 2715 info->default_timeout = arg & 0xff;
02f1175c 2716 break;
1da177e4 2717 case CYSETRFLOW:
02f1175c 2718 info->rflow = (int)arg;
02f1175c 2719 break;
1da177e4 2720 case CYGETRFLOW:
02f1175c
JS		 2721 ret_val = info->rflow;
2722 break;
1da177e4 2723 case CYSETRTSDTR_INV:
02f1175c 2724 info->rtsdtr_inv = (int)arg;
02f1175c 2725 break;
1da177e4 2726 case CYGETRTSDTR_INV:
02f1175c
JS		 2727 ret_val = info->rtsdtr_inv;
2728 break;
1da177e4 2729 case CYGETCD1400VER:
02f1175c
JS		 2730 ret_val = info->chip_rev;
2731 break;
1da177e4
LT		 2732#ifndef CONFIG_CYZ_INTR
2733 case CYZSETPOLLCYCLE:
02f1175c 2734 cyz_polling_cycle = (arg * HZ) / 1000;
02f1175c 2735 break;
1da177e4 2736 case CYZGETPOLLCYCLE:
02f1175c
JS		 2737 ret_val = (cyz_polling_cycle * 1000) / HZ;
2738 break;
2739#endif /* CONFIG_CYZ_INTR */
1da177e4 2740 case CYSETWAIT:
44b7d1b3 2741 info->port.closing_wait = (unsigned short)arg * HZ / 100;
02f1175c 2742 break;
1da177e4 2743 case CYGETWAIT:
44b7d1b3 2744 ret_val = info->port.closing_wait / (HZ / 100);
02f1175c
JS		 2745 break;
2746 case TIOCGSERIAL:
6c28181c 2747 ret_val = cy_get_serial_info(info, argp);
02f1175c
JS		 2748 break;
2749 case TIOCSSERIAL:
d13549f8 2750 ret_val = cy_set_serial_info(info, tty, argp);
02f1175c
JS		 2751 break;
2752 case TIOCSERGETLSR: /* Get line status register */
2753 ret_val = get_lsr_info(info, argp);
2754 break;
2755 /*
2756 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2757 * - mask passed in arg for lines of interest
2758 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2759 * Caller should use TIOCGICOUNT to see which one it was
2760 */
1da177e4 2761 case TIOCMIWAIT:
9fa1b3b1 2762 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 2763 /* note the counters on entry */
2c7fea99 2764 cnow = info->icount;
9fa1b3b1 2765 spin_unlock_irqrestore(&info->card->card_lock, flags);
bdc04e31 2766 ret_val = wait_event_interruptible(info->port.delta_msr_wait,
6c28181c 2767 cy_cflags_changed(info, arg, &cnow));
2c7fea99 2768 break;
1da177e4 2769
02f1175c
JS		 2770 /*
2771 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2772 * Return: write counters to the user passed counter struct
2773 * NB: both 1->0 and 0->1 transitions are counted except for
2774 * RI where only 0->1 is counted.
2775 */
02f1175c
JS		 2776 default:
2777 ret_val = -ENOIOCTLCMD;
2778 }
1da177e4
LT		 2779
2780#ifdef CY_DEBUG_OTHER
21719191 2781 printk(KERN_DEBUG "cyc:cy_ioctl done\n");
1da177e4 2782#endif
02f1175c
JS		 2783 return ret_val;
2784} /* cy_ioctl */
1da177e4 2785
0587102c
AC		 2786static int cy_get_icount(struct tty_struct *tty,
2787 struct serial_icounter_struct *sic)
2788{
2789 struct cyclades_port *info = tty->driver_data;
2790 struct cyclades_icount cnow; /* Used to snapshot */
2791 unsigned long flags;
2792
2793 spin_lock_irqsave(&info->card->card_lock, flags);
2794 cnow = info->icount;
2795 spin_unlock_irqrestore(&info->card->card_lock, flags);
2796
2797 sic->cts = cnow.cts;
2798 sic->dsr = cnow.dsr;
2799 sic->rng = cnow.rng;
2800 sic->dcd = cnow.dcd;
2801 sic->rx = cnow.rx;
2802 sic->tx = cnow.tx;
2803 sic->frame = cnow.frame;
2804 sic->overrun = cnow.overrun;
2805 sic->parity = cnow.parity;
2806 sic->brk = cnow.brk;
2807 sic->buf_overrun = cnow.buf_overrun;
2808 return 0;
2809}
2810
1da177e4
LT		 2811/*
2812 * This routine allows the tty driver to be notified when
2813 * device's termios settings have changed. Note that a
2814 * well-designed tty driver should be prepared to accept the case
2815 * where old == NULL, and try to do something rational.
2816 */
02f1175c 2817static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4 2818{
cab9bdd1 2819 struct cyclades_port *info = tty->driver_data;
1da177e4
LT		 2820
2821#ifdef CY_DEBUG_OTHER
21719191 2822 printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line);
1da177e4
LT		 2823#endif
2824
d13549f8 2825 cy_set_line_char(info, tty);
02f1175c
JS		 2826
2827 if ((old_termios->c_cflag & CRTSCTS) &&
2828 !(tty->termios->c_cflag & CRTSCTS)) {
2829 tty->hw_stopped = 0;
2830 cy_start(tty);
2831 }
1da177e4 2832#if 0
02f1175c
JS		 2833 /*
2834 * No need to wake up processes in open wait, since they
2835 * sample the CLOCAL flag once, and don't recheck it.
2836 * XXX It's not clear whether the current behavior is correct
2837 * or not. Hence, this may change.....
2838 */
2839 if (!(old_termios->c_cflag & CLOCAL) &&
2840 (tty->termios->c_cflag & CLOCAL))
77451e53 2841 wake_up_interruptible(&info->port.open_wait);
1da177e4 2842#endif
02f1175c 2843} /* cy_set_termios */
1da177e4
LT		 2844
2845/* This function is used to send a high-priority XON/XOFF character to
2846 the device.
2847*/
02f1175c 2848static void cy_send_xchar(struct tty_struct *tty, char ch)
1da177e4 2849{
cab9bdd1 2850 struct cyclades_port *info = tty->driver_data;
875b206b
JS		 2851 struct cyclades_card *card;
2852 int channel;
1da177e4 2853
02f1175c 2854 if (serial_paranoia_check(info, tty->name, "cy_send_xchar"))
1da177e4
LT		 2855 return;
2856
02f1175c 2857 info->x_char = ch;
1da177e4
LT		 2858
2859 if (ch)
02f1175c 2860 cy_start(tty);
1da177e4
LT		 2861
2862 card = info->card;
875b206b 2863 channel = info->line - card->first_line;
1da177e4 2864
2693f485 2865 if (cy_is_Z(card)) {
02f1175c 2866 if (ch == STOP_CHAR(tty))
875b206b 2867 cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L);
02f1175c 2868 else if (ch == START_CHAR(tty))
875b206b 2869 cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L);
1da177e4
LT		 2870 }
2871}
2872
2873/* This routine is called by the upper-layer tty layer to signal
2874 that incoming characters should be throttled because the input
2875 buffers are close to full.
2876 */
02f1175c 2877static void cy_throttle(struct tty_struct *tty)
1da177e4 2878{
cab9bdd1 2879 struct cyclades_port *info = tty->driver_data;
875b206b 2880 struct cyclades_card *card;
02f1175c 2881 unsigned long flags;
1da177e4
LT		 2882
2883#ifdef CY_DEBUG_THROTTLE
02f1175c 2884 char buf[64];
1da177e4 2885
21719191 2886 printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf),
02f1175c 2887 tty->ldisc.chars_in_buffer(tty), info->line);
1da177e4
LT		 2888#endif
2889
15ed6cc0 2890 if (serial_paranoia_check(info, tty->name, "cy_throttle"))
02f1175c 2891 return;
02f1175c
JS		 2892
2893 card = info->card;
2894
2895 if (I_IXOFF(tty)) {
2693f485 2896 if (!cy_is_Z(card))
02f1175c
JS		 2897 cy_send_xchar(tty, STOP_CHAR(tty));
2898 else
2899 info->throttle = 1;
2900 }
1da177e4 2901
02f1175c 2902 if (tty->termios->c_cflag & CRTSCTS) {
2693f485 2903 if (!cy_is_Z(card)) {
9fa1b3b1 2904 spin_lock_irqsave(&card->card_lock, flags);
4d768200 2905 cyy_change_rts_dtr(info, 0, TIOCM_RTS);
9fa1b3b1 2906 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2907 } else {
2908 info->throttle = 1;
2909 }
2910 }
02f1175c 2911} /* cy_throttle */
1da177e4
LT		 2912
2913/*
2914 * This routine notifies the tty driver that it should signal
2915 * that characters can now be sent to the tty without fear of
2916 * overrunning the input buffers of the line disciplines.
2917 */
02f1175c 2918static void cy_unthrottle(struct tty_struct *tty)
1da177e4 2919{
cab9bdd1 2920 struct cyclades_port *info = tty->driver_data;
875b206b 2921 struct cyclades_card *card;
02f1175c 2922 unsigned long flags;
1da177e4
LT		 2923
2924#ifdef CY_DEBUG_THROTTLE
02f1175c
JS		 2925 char buf[64];
2926
21719191 2927 printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n",
15ed6cc0 2928 tty_name(tty, buf), tty_chars_in_buffer(tty), info->line);
1da177e4
LT		 2929#endif
2930
15ed6cc0 2931 if (serial_paranoia_check(info, tty->name, "cy_unthrottle"))
02f1175c 2932 return;
1da177e4 2933
02f1175c
JS		 2934 if (I_IXOFF(tty)) {
2935 if (info->x_char)
2936 info->x_char = 0;
2937 else
2938 cy_send_xchar(tty, START_CHAR(tty));
1da177e4 2939 }
1da177e4 2940
02f1175c
JS		 2941 if (tty->termios->c_cflag & CRTSCTS) {
2942 card = info->card;
2693f485 2943 if (!cy_is_Z(card)) {
9fa1b3b1 2944 spin_lock_irqsave(&card->card_lock, flags);
4d768200 2945 cyy_change_rts_dtr(info, TIOCM_RTS, 0);
9fa1b3b1 2946 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2947 } else {
2948 info->throttle = 0;
2949 }
2950 }
02f1175c 2951} /* cy_unthrottle */
1da177e4
LT		 2952
2953/* cy_start and cy_stop provide software output flow control as a
2954 function of XON/XOFF, software CTS, and other such stuff.
2955*/
02f1175c 2956static void cy_stop(struct tty_struct *tty)
1da177e4 2957{
02f1175c 2958 struct cyclades_card *cinfo;
cab9bdd1 2959 struct cyclades_port *info = tty->driver_data;
3aeea5b9 2960 int channel;
02f1175c 2961 unsigned long flags;
1da177e4
LT		 2962
2963#ifdef CY_DEBUG_OTHER
21719191 2964 printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line);
1da177e4
LT		 2965#endif
2966
02f1175c
JS		 2967 if (serial_paranoia_check(info, tty->name, "cy_stop"))
2968 return;
1da177e4 2969
875b206b 2970 cinfo = info->card;
02f1175c 2971 channel = info->line - cinfo->first_line;
2693f485 2972 if (!cy_is_Z(cinfo)) {
9fa1b3b1 2973 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 2974 cyy_writeb(info, CyCAR, channel & 0x03);
2975 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
9fa1b3b1 2976 spin_unlock_irqrestore(&cinfo->card_lock, flags);
02f1175c 2977 }
02f1175c 2978} /* cy_stop */
1da177e4 2979
02f1175c 2980static void cy_start(struct tty_struct *tty)
1da177e4 2981{
02f1175c 2982 struct cyclades_card *cinfo;
cab9bdd1 2983 struct cyclades_port *info = tty->driver_data;
3aeea5b9 2984 int channel;
02f1175c 2985 unsigned long flags;
1da177e4
LT		 2986
2987#ifdef CY_DEBUG_OTHER
21719191 2988 printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line);
1da177e4
LT		 2989#endif
2990
02f1175c
JS		 2991 if (serial_paranoia_check(info, tty->name, "cy_start"))
2992 return;
1da177e4 2993
875b206b 2994 cinfo = info->card;
02f1175c 2995 channel = info->line - cinfo->first_line;
2693f485 2996 if (!cy_is_Z(cinfo)) {
9fa1b3b1 2997 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 2998 cyy_writeb(info, CyCAR, channel & 0x03);
2999 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
9fa1b3b1 3000 spin_unlock_irqrestore(&cinfo->card_lock, flags);
02f1175c 3001 }
02f1175c 3002} /* cy_start */
1da177e4 3003
1da177e4
LT		 3004/*
3005 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
3006 */
02f1175c 3007static void cy_hangup(struct tty_struct *tty)
1da177e4 3008{
cab9bdd1 3009 struct cyclades_port *info = tty->driver_data;
02f1175c 3010
1da177e4 3011#ifdef CY_DEBUG_OTHER
21719191 3012 printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line);
1da177e4
LT		 3013#endif
3014
02f1175c
JS		 3015 if (serial_paranoia_check(info, tty->name, "cy_hangup"))
3016 return;
1da177e4 3017
02f1175c 3018 cy_flush_buffer(tty);
d13549f8 3019 cy_shutdown(info, tty);
174e6fe0 3020 tty_port_hangup(&info->port);
02f1175c 3021} /* cy_hangup */
1da177e4 3022
f0737579
JS		 3023static int cyy_carrier_raised(struct tty_port *port)
3024{
3025 struct cyclades_port *info = container_of(port, struct cyclades_port,
3026 port);
3027 struct cyclades_card *cinfo = info->card;
f0737579
JS		 3028 unsigned long flags;
3029 int channel = info->line - cinfo->first_line;
f0737579
JS		 3030 u32 cd;
3031
f0737579 3032 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 3033 cyy_writeb(info, CyCAR, channel & 0x03);
3034 cd = cyy_readb(info, CyMSVR1) & CyDCD;
f0737579
JS		 3035 spin_unlock_irqrestore(&cinfo->card_lock, flags);
3036
3037 return cd;
3038}
3039
3040static void cyy_dtr_rts(struct tty_port *port, int raise)
3041{
3042 struct cyclades_port *info = container_of(port, struct cyclades_port,
3043 port);
3044 struct cyclades_card *cinfo = info->card;
f0737579 3045 unsigned long flags;
f0737579
JS		 3046
3047 spin_lock_irqsave(&cinfo->card_lock, flags);
4d768200
JS		 3048 cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0,
3049 raise ? 0 : TIOCM_RTS | TIOCM_DTR);
f0737579
JS		 3050 spin_unlock_irqrestore(&cinfo->card_lock, flags);
3051}
3052
3053static int cyz_carrier_raised(struct tty_port *port)
3054{
3055 struct cyclades_port *info = container_of(port, struct cyclades_port,
3056 port);
f0737579 3057
f0eefdc3 3058 return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD;
f0737579
JS		 3059}
3060
3061static void cyz_dtr_rts(struct tty_port *port, int raise)
3062{
3063 struct cyclades_port *info = container_of(port, struct cyclades_port,
3064 port);
3065 struct cyclades_card *cinfo = info->card;
f0eefdc3 3066 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
f0737579
JS		 3067 int ret, channel = info->line - cinfo->first_line;
3068 u32 rs;
3069
f0eefdc3 3070 rs = readl(&ch_ctrl->rs_control);
f0737579
JS		 3071 if (raise)
3072 rs |= C_RS_RTS | C_RS_DTR;
3073 else
3074 rs &= ~(C_RS_RTS | C_RS_DTR);
f0eefdc3 3075 cy_writel(&ch_ctrl->rs_control, rs);
f0737579
JS		 3076 ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L);
3077 if (ret != 0)
3078 printk(KERN_ERR "%s: retval on ttyC%d was %x\n",
3079 __func__, info->line, ret);
3080#ifdef CY_DEBUG_DTR
3081 printk(KERN_DEBUG "%s: raising Z DTR\n", __func__);
3082#endif
3083}
3084
3085static const struct tty_port_operations cyy_port_ops = {
3086 .carrier_raised = cyy_carrier_raised,
3087 .dtr_rts = cyy_dtr_rts,
e936ffd5 3088 .shutdown = cy_do_close,
f0737579
JS		 3089};
3090
3091static const struct tty_port_operations cyz_port_ops = {
3092 .carrier_raised = cyz_carrier_raised,
3093 .dtr_rts = cyz_dtr_rts,
e936ffd5 3094 .shutdown = cy_do_close,
f0737579
JS		 3095};
3096
1da177e4
LT		 3097/*
3098 * ---------------------------------------------------------------------
3099 * cy_init() and friends
3100 *
3101 * cy_init() is called at boot-time to initialize the serial driver.
3102 * ---------------------------------------------------------------------
3103 */
3104
dd025c0c 3105static int __devinit cy_init_card(struct cyclades_card *cinfo)
0809e267
JS		 3106{
3107 struct cyclades_port *info;
f0eefdc3 3108 unsigned int channel, port;
0809e267 3109
3046d50e 3110 spin_lock_init(&cinfo->card_lock);
963118ee 3111 cinfo->intr_enabled = 0;
3046d50e 3112
963118ee
JS		 3113 cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports),
3114 GFP_KERNEL);
dd025c0c
JS		 3115 if (cinfo->ports == NULL) {
3116 printk(KERN_ERR "Cyclades: cannot allocate ports\n");
3117 return -ENOMEM;
3118 }
3119
f0eefdc3
JS		 3120 for (channel = 0, port = cinfo->first_line; channel < cinfo->nports;
3121 channel++, port++) {
3122 info = &cinfo->ports[channel];
44b7d1b3 3123 tty_port_init(&info->port);
3046d50e 3124 info->magic = CYCLADES_MAGIC;
875b206b 3125 info->card = cinfo;
3046d50e 3126 info->line = port;
3046d50e 3127
44b7d1b3
AC		 3128 info->port.closing_wait = CLOSING_WAIT_DELAY;
3129 info->port.close_delay = 5 * HZ / 10;
77451e53 3130 info->port.flags = STD_COM_FLAGS;
2c7fea99 3131 init_completion(&info->shutdown_wait);
3046d50e 3132
2693f485 3133 if (cy_is_Z(cinfo)) {
f0eefdc3
JS		 3134 struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS;
3135 struct ZFW_CTRL *zfw_ctrl;
3136
f0737579 3137 info->port.ops = &cyz_port_ops;
0809e267 3138 info->type = PORT_STARTECH;
f0eefdc3
JS		 3139
3140 zfw_ctrl = cinfo->base_addr +
3141 (readl(&firm_id->zfwctrl_addr) & 0xfffff);
3142 info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel];
3143 info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
3144
101b8159 3145 if (cinfo->hw_ver == ZO_V1)
0809e267
JS		 3146 info->xmit_fifo_size = CYZ_FIFO_SIZE;
3147 else
3046d50e 3148 info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
0809e267 3149#ifdef CONFIG_CYZ_INTR
3991428d
JS		 3150 setup_timer(&cyz_rx_full_timer[port],
3151 cyz_rx_restart, (unsigned long)info);
0809e267 3152#endif
3046d50e 3153 } else {
f0eefdc3 3154 unsigned short chip_number;
963118ee 3155 int index = cinfo->bus_index;
f0eefdc3 3156
f0737579 3157 info->port.ops = &cyy_port_ops;
0809e267 3158 info->type = PORT_CIRRUS;
0809e267 3159 info->xmit_fifo_size = CyMAX_CHAR_FIFO;
3046d50e 3160 info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
0809e267
JS		 3161 info->cor2 = CyETC;
3162 info->cor3 = 0x08; /* _very_ small rcv threshold */
3046d50e 3163
f0eefdc3 3164 chip_number = channel / CyPORTS_PER_CHIP;
3aeea5b9
JS		 3165 info->u.cyy.base_addr = cinfo->base_addr +
3166 (cy_chip_offset[chip_number] << index);
3167 info->chip_rev = cyy_readb(info, CyGFRCR);
15ed6cc0
AC		 3168
3169 if (info->chip_rev >= CD1400_REV_J) {
0809e267
JS		 3170 /* It is a CD1400 rev. J or later */
3171 info->tbpr = baud_bpr_60[13]; /* Tx BPR */
3172 info->tco = baud_co_60[13]; /* Tx CO */
3173 info->rbpr = baud_bpr_60[13]; /* Rx BPR */
3174 info->rco = baud_co_60[13]; /* Rx CO */
0809e267
JS		 3175 info->rtsdtr_inv = 1;
3176 } else {
3177 info->tbpr = baud_bpr_25[13]; /* Tx BPR */
3178 info->tco = baud_co_25[13]; /* Tx CO */
3179 info->rbpr = baud_bpr_25[13]; /* Rx BPR */
3180 info->rco = baud_co_25[13]; /* Rx CO */
0809e267
JS		 3181 info->rtsdtr_inv = 0;
3182 }
3046d50e
JS		 3183 info->read_status_mask = CyTIMEOUT | CySPECHAR |
3184 CyBREAK | CyPARITY | CyFRAME | CyOVERRUN;
0809e267 3185 }
3046d50e 3186
0809e267 3187 }
3046d50e
JS		 3188
3189#ifndef CONFIG_CYZ_INTR
2693f485 3190 if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) {
3046d50e
JS		 3191 mod_timer(&cyz_timerlist, jiffies + 1);
3192#ifdef CY_PCI_DEBUG
3193 printk(KERN_DEBUG "Cyclades-Z polling initialized\n");
3194#endif
3195 }
3196#endif
dd025c0c 3197 return 0;
0809e267
JS		 3198}
3199
1da177e4
LT		 3200/* initialize chips on Cyclom-Y card -- return number of valid
3201 chips (which is number of ports/4) */
31b4f0a1
JS		 3202static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr,
3203 int index)
1da177e4 3204{
02f1175c
JS		 3205 unsigned int chip_number;
3206 void __iomem *base_addr;
3207
3208 cy_writeb(true_base_addr + (Cy_HwReset << index), 0);
3209 /* Cy_HwReset is 0x1400 */
3210 cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0);
3211 /* Cy_ClrIntr is 0x1800 */
3212 udelay(500L);
3213
15ed6cc0
AC		 3214 for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD;
3215 chip_number++) {
02f1175c
JS		 3216 base_addr =
3217 true_base_addr + (cy_chip_offset[chip_number] << index);
3218 mdelay(1);
db05c3b1 3219 if (readb(base_addr + (CyCCR << index)) != 0x00) {
02f1175c
JS		 3220 /*************
3221 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
3222 chip_number, (unsigned long)base_addr);
3223 *************/
3224 return chip_number;
3225 }
3226
3227 cy_writeb(base_addr + (CyGFRCR << index), 0);
3228 udelay(10L);
3229
3230 /* The Cyclom-16Y does not decode address bit 9 and therefore
3231 cannot distinguish between references to chip 0 and a non-
3232 existent chip 4. If the preceding clearing of the supposed
3233 chip 4 GFRCR register appears at chip 0, there is no chip 4
3234 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
3235 */
db05c3b1 3236 if (chip_number == 4 && readb(true_base_addr +
02f1175c
JS		 3237 (cy_chip_offset[0] << index) +
3238 (CyGFRCR << index)) == 0) {
3239 return chip_number;
3240 }
3241
3242 cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET);
3243 mdelay(1);
3244
db05c3b1 3245 if (readb(base_addr + (CyGFRCR << index)) == 0x00) {
02f1175c
JS		 3246 /*
3247 printk(" chip #%d at %#6lx is not responding ",
3248 chip_number, (unsigned long)base_addr);
3249 printk("(GFRCR stayed 0)\n",
3250 */
3251 return chip_number;
3252 }
db05c3b1 3253 if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) !=
02f1175c
JS		 3254 0x40) {
3255 /*
3256 printk(" chip #%d at %#6lx is not valid (GFRCR == "
3257 "%#2x)\n",
3258 chip_number, (unsigned long)base_addr,
3259 base_addr[CyGFRCR<<index]);
3260 */
3261 return chip_number;
3262 }
3263 cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL);
db05c3b1 3264 if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) {
02f1175c
JS		 3265 /* It is a CD1400 rev. J or later */
3266 /* Impossible to reach 5ms with this chip.
3267 Changed to 2ms instead (f = 500 Hz). */
3268 cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS);
3269 } else {
3270 /* f = 200 Hz */
3271 cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS);
3272 }
1da177e4 3273
02f1175c
JS		 3274 /*
3275 printk(" chip #%d at %#6lx is rev 0x%2x\n",
3276 chip_number, (unsigned long)base_addr,
db05c3b1 3277 readb(base_addr+(CyGFRCR<<index)));
02f1175c
JS		 3278 */
3279 }
3280 return chip_number;
3281} /* cyy_init_card */
1da177e4
LT		 3282
3283/*
3284 * ---------------------------------------------------------------------
3285 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
3286 * sets global variables and return the number of ISA boards found.
3287 * ---------------------------------------------------------------------
3288 */
02f1175c 3289static int __init cy_detect_isa(void)
1da177e4
LT		 3290{
3291#ifdef CONFIG_ISA
02f1175c
JS		 3292 unsigned short cy_isa_irq, nboard;
3293 void __iomem *cy_isa_address;
3294 unsigned short i, j, cy_isa_nchan;
02f1175c 3295 int isparam = 0;
1da177e4 3296
02f1175c 3297 nboard = 0;
1da177e4 3298
1da177e4 3299 /* Check for module parameters */
02f1175c
JS		 3300 for (i = 0; i < NR_CARDS; i++) {
3301 if (maddr[i] || i) {
3302 isparam = 1;
3303 cy_isa_addresses[i] = maddr[i];
3304 }
3305 if (!maddr[i])
3306 break;
1da177e4 3307 }
1da177e4 3308
02f1175c
JS		 3309 /* scan the address table probing for Cyclom-Y/ISA boards */
3310 for (i = 0; i < NR_ISA_ADDRS; i++) {
3311 unsigned int isa_address = cy_isa_addresses[i];
15ed6cc0 3312 if (isa_address == 0x0000)
096dcfce 3313 return nboard;
1da177e4 3314
02f1175c 3315 /* probe for CD1400... */
cd989b3a 3316 cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin);
3137553d
JS		 3317 if (cy_isa_address == NULL) {
3318 printk(KERN_ERR "Cyclom-Y/ISA: can't remap base "
3319 "address\n");
3320 continue;
3321 }
02f1175c
JS		 3322 cy_isa_nchan = CyPORTS_PER_CHIP *
3323 cyy_init_card(cy_isa_address, 0);
3324 if (cy_isa_nchan == 0) {
3137553d 3325 iounmap(cy_isa_address);
02f1175c
JS		 3326 continue;
3327 }
20904363 3328
196b3167 3329 if (isparam && i < NR_CARDS && irq[i])
02f1175c 3330 cy_isa_irq = irq[i];
1da177e4 3331 else
02f1175c
JS		 3332 /* find out the board's irq by probing */
3333 cy_isa_irq = detect_isa_irq(cy_isa_address);
3334 if (cy_isa_irq == 0) {
21719191
JS		 3335 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the "
3336 "IRQ could not be detected.\n",
02f1175c 3337 (unsigned long)cy_isa_address);
3137553d 3338 iounmap(cy_isa_address);
02f1175c
JS		 3339 continue;
3340 }
3341
3342 if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) {
21719191
JS		 3343 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
3344 "more channels are available. Change NR_PORTS "
3345 "in cyclades.c and recompile kernel.\n",
02f1175c 3346 (unsigned long)cy_isa_address);
3137553d 3347 iounmap(cy_isa_address);
096dcfce 3348 return nboard;
02f1175c
JS		 3349 }
3350 /* fill the next cy_card structure available */
3351 for (j = 0; j < NR_CARDS; j++) {
f7429034 3352 if (cy_card[j].base_addr == NULL)
02f1175c
JS		 3353 break;
3354 }
3355 if (j == NR_CARDS) { /* no more cy_cards available */
21719191
JS		 3356 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
3357 "more cards can be used. Change NR_CARDS in "
3358 "cyclades.c and recompile kernel.\n",
02f1175c 3359 (unsigned long)cy_isa_address);
3137553d 3360 iounmap(cy_isa_address);
096dcfce 3361 return nboard;
02f1175c
JS		 3362 }
3363
3364 /* allocate IRQ */
3365 if (request_irq(cy_isa_irq, cyy_interrupt,
9cfb5c05 3366 0, "Cyclom-Y", &cy_card[j])) {
21719191
JS		 3367 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
3368 "could not allocate IRQ#%d.\n",
3369 (unsigned long)cy_isa_address, cy_isa_irq);
3137553d 3370 iounmap(cy_isa_address);
096dcfce 3371 return nboard;
02f1175c
JS		 3372 }
3373
3374 /* set cy_card */
3375 cy_card[j].base_addr = cy_isa_address;
97e87f8e 3376 cy_card[j].ctl_addr.p9050 = NULL;
02f1175c
JS		 3377 cy_card[j].irq = (int)cy_isa_irq;
3378 cy_card[j].bus_index = 0;
3379 cy_card[j].first_line = cy_next_channel;
963118ee
JS		 3380 cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP;
3381 cy_card[j].nports = cy_isa_nchan;
3137553d
JS		 3382 if (cy_init_card(&cy_card[j])) {
3383 cy_card[j].base_addr = NULL;
3384 free_irq(cy_isa_irq, &cy_card[j]);
3385 iounmap(cy_isa_address);
3386 continue;
3387 }
02f1175c
JS		 3388 nboard++;
3389
21719191
JS		 3390 printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: "
3391 "%d channels starting from port %d\n",
02f1175c
JS		 3392 j + 1, (unsigned long)cy_isa_address,
3393 (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
21719191
JS		 3394 cy_isa_irq, cy_isa_nchan, cy_next_channel);
3395
6ad1ccc1
JS		 3396 for (j = cy_next_channel;
3397 j < cy_next_channel + cy_isa_nchan; j++)
3398 tty_register_device(cy_serial_driver, j, NULL);
02f1175c
JS		 3399 cy_next_channel += cy_isa_nchan;
3400 }
096dcfce 3401 return nboard;
1da177e4 3402#else
096dcfce 3403 return 0;
02f1175c
JS		 3404#endif /* CONFIG_ISA */
3405} /* cy_detect_isa */
1da177e4 3406
58936d8d 3407#ifdef CONFIG_PCI
054f5b0a
JS		 3408static inline int __devinit cyc_isfwstr(const char *str, unsigned int size)
3409{
3410 unsigned int a;
3411
3412 for (a = 0; a < size && *str; a++, str++)
3413 if (*str & 0x80)
3414 return -EINVAL;
3415
3416 for (; a < size; a++, str++)
3417 if (*str)
3418 return -EINVAL;
3419
3420 return 0;
3421}
3422
f61e761e 3423static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data,
054f5b0a
JS		 3424 unsigned int size)
3425{
3426 for (; size > 0; size--) {
3427 cy_writel(fpga, *data++);
3428 udelay(10);
3429 }
3430}
3431
3432static void __devinit plx_init(struct pci_dev *pdev, int irq,
3433 struct RUNTIME_9060 __iomem *addr)
1da177e4 3434{
02f1175c 3435 /* Reset PLX */
054f5b0a 3436 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000);
02f1175c 3437 udelay(100L);
054f5b0a 3438 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000);
02f1175c
JS		 3439
3440 /* Reload Config. Registers from EEPROM */
054f5b0a 3441 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000);
02f1175c 3442 udelay(100L);
054f5b0a
JS		 3443 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000);
3444
3445 /* For some yet unknown reason, once the PLX9060 reloads the EEPROM,
3446 * the IRQ is lost and, thus, we have to re-write it to the PCI config.
3447 * registers. This will remain here until we find a permanent fix.
3448 */
3449 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
3450}
3451
3452static int __devinit __cyz_load_fw(const struct firmware *fw,
3453 const char *name, const u32 mailbox, void __iomem *base,
3454 void __iomem *fpga)
3455{
f61e761e
DW		 3456 const void *ptr = fw->data;
3457 const struct zfile_header *h = ptr;
3458 const struct zfile_config *c, *cs;
3459 const struct zfile_block *b, *bs;
054f5b0a
JS		 3460 unsigned int a, tmp, len = fw->size;
3461#define BAD_FW KERN_ERR "Bad firmware: "
3462 if (len < sizeof(*h)) {
3463 printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h));
3464 return -EINVAL;
3465 }
3466
3467 cs = ptr + h->config_offset;
3468 bs = ptr + h->block_offset;
3469
3470 if ((void *)(cs + h->n_config) > ptr + len ||
3471 (void *)(bs + h->n_blocks) > ptr + len) {
3472 printk(BAD_FW "too short");
3473 return -EINVAL;
3474 }
3475
3476 if (cyc_isfwstr(h->name, sizeof(h->name)) ||
3477 cyc_isfwstr(h->date, sizeof(h->date))) {
3478 printk(BAD_FW "bad formatted header string\n");
3479 return -EINVAL;
3480 }
3481
3482 if (strncmp(name, h->name, sizeof(h->name))) {
3483 printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name);
3484 return -EINVAL;
3485 }
3486
3487 tmp = 0;
3488 for (c = cs; c < cs + h->n_config; c++) {
3489 for (a = 0; a < c->n_blocks; a++)
3490 if (c->block_list[a] > h->n_blocks) {
3491 printk(BAD_FW "bad block ref number in cfgs\n");
3492 return -EINVAL;
3493 }
3494 if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */
3495 tmp++;
3496 }
3497 if (!tmp) {
3498 printk(BAD_FW "nothing appropriate\n");
3499 return -EINVAL;
3500 }
3501
3502 for (b = bs; b < bs + h->n_blocks; b++)
3503 if (b->file_offset + b->size > len) {
3504 printk(BAD_FW "bad block data offset\n");
3505 return -EINVAL;
3506 }
3507
3508 /* everything is OK, let's seek'n'load it */
3509 for (c = cs; c < cs + h->n_config; c++)
3510 if (c->mailbox == mailbox && c->function == 0)
3511 break;
3512
3513 for (a = 0; a < c->n_blocks; a++) {
3514 b = &bs[c->block_list[a]];
3515 if (b->type == ZBLOCK_FPGA) {
3516 if (fpga != NULL)
3517 cyz_fpga_copy(fpga, ptr + b->file_offset,
3518 b->size);
3519 } else {
3520 if (base != NULL)
3521 memcpy_toio(base + b->ram_offset,
3522 ptr + b->file_offset, b->size);
3523 }
3524 }
3525#undef BAD_FW
3526 return 0;
3527}
3528
3529static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr,
3530 struct RUNTIME_9060 __iomem *ctl_addr, int irq)
3531{
3532 const struct firmware *fw;
3533 struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS;
3534 struct CUSTOM_REG __iomem *cust = base_addr;
3535 struct ZFW_CTRL __iomem *pt_zfwctrl;
c4923b4f 3536 void __iomem *tmp;
963118ee 3537 u32 mailbox, status, nchan;
054f5b0a
JS		 3538 unsigned int i;
3539 int retval;
3540
3541 retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev);
3542 if (retval) {
3543 dev_err(&pdev->dev, "can't get firmware\n");
3544 goto err;
3545 }
3546
3547 /* Check whether the firmware is already loaded and running. If
3548 positive, skip this board */
2693f485 3549 if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) {
054f5b0a
JS		 3550 u32 cntval = readl(base_addr + 0x190);
3551
3552 udelay(100);
3553 if (cntval != readl(base_addr + 0x190)) {
3554 /* FW counter is working, FW is running */
3555 dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. "
3556 "Skipping board.\n");
3557 retval = 0;
3558 goto err_rel;
3559 }
3560 }
3561
3562 /* start boot */
3563 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) &
3564 ~0x00030800UL);
3565
3566 mailbox = readl(&ctl_addr->mail_box_0);
3567
2693f485 3568 if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) {
054f5b0a
JS		 3569 /* stops CPU and set window to beginning of RAM */
3570 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3571 cy_writel(&cust->cpu_stop, 0);
3572 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3573 udelay(100);
3574 }
3575
3576 plx_init(pdev, irq, ctl_addr);
3577
3578 if (mailbox != 0) {
3579 /* load FPGA */
3580 retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL,
3581 base_addr);
3582 if (retval)
3583 goto err_rel;
2693f485 3584 if (!__cyz_fpga_loaded(ctl_addr)) {
054f5b0a
JS		 3585 dev_err(&pdev->dev, "fw upload successful, but fw is "
3586 "not loaded\n");
3587 goto err_rel;
3588 }
3589 }
3590
3591 /* stops CPU and set window to beginning of RAM */
3592 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3593 cy_writel(&cust->cpu_stop, 0);
3594 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3595 udelay(100);
3596
3597 /* clear memory */
c4923b4f 3598 for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
054f5b0a
JS		 3599 cy_writeb(tmp, 255);
3600 if (mailbox != 0) {
3601 /* set window to last 512K of RAM */
3602 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE);
c4923b4f 3603 for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
054f5b0a
JS		 3604 cy_writeb(tmp, 255);
3605 /* set window to beginning of RAM */
3606 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
054f5b0a
JS		 3607 }
3608
3609 retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL);
3610 release_firmware(fw);
3611 if (retval)
3612 goto err;
3613
3614 /* finish boot and start boards */
3615 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3616 cy_writel(&cust->cpu_start, 0);
3617 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3618 i = 0;
3619 while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40)
3620 msleep(100);
3621 if (status != ZFIRM_ID) {
3622 if (status == ZFIRM_HLT) {
3623 dev_err(&pdev->dev, "you need an external power supply "
3624 "for this number of ports. Firmware halted and "
3625 "board reset.\n");
3626 retval = -EIO;
3627 goto err;
3628 }
3629 dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting "
3630 "some more time\n", status);
3631 while ((status = readl(&fid->signature)) != ZFIRM_ID &&
3632 i++ < 200)
3633 msleep(100);
3634 if (status != ZFIRM_ID) {
3635 dev_err(&pdev->dev, "Board not started in 20 seconds! "
3636 "Giving up. (fid->signature = 0x%x)\n",
3637 status);
3638 dev_info(&pdev->dev, "*** Warning ***: if you are "
3639 "upgrading the FW, please power cycle the "
3640 "system before loading the new FW to the "
3641 "Cyclades-Z.\n");
3642
2693f485 3643 if (__cyz_fpga_loaded(ctl_addr))
054f5b0a
JS		 3644 plx_init(pdev, irq, ctl_addr);
3645
3646 retval = -EIO;
3647 goto err;
3648 }
3649 dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n",
3650 i / 10);
3651 }
3652 pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr);
3653
3654 dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n",
3655 base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr),
3656 base_addr + readl(&fid->zfwctrl_addr));
3657
963118ee 3658 nchan = readl(&pt_zfwctrl->board_ctrl.n_channel);
054f5b0a 3659 dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n",
963118ee 3660 readl(&pt_zfwctrl->board_ctrl.fw_version), nchan);
054f5b0a 3661
963118ee 3662 if (nchan == 0) {
054f5b0a
JS		 3663 dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please "
3664 "check the connection between the Z host card and the "
3665 "serial expanders.\n");
3666
2693f485 3667 if (__cyz_fpga_loaded(ctl_addr))
054f5b0a
JS		 3668 plx_init(pdev, irq, ctl_addr);
3669
3670 dev_info(&pdev->dev, "Null number of ports detected. Board "
3671 "reset.\n");
3672 retval = 0;
3673 goto err;
3674 }
3675
3676 cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX);
3677 cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION);
3678
3679 /*
3680 Early firmware failed to start looking for commands.
3681 This enables firmware interrupts for those commands.
3682 */
3683 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
3684 (1 << 17));
3685 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
3686 0x00030800UL);
3687
963118ee 3688 return nchan;
054f5b0a
JS		 3689err_rel:
3690 release_firmware(fw);
3691err:
3692 return retval;
1da177e4
LT		 3693}
3694
58936d8d
JS		 3695static int __devinit cy_pci_probe(struct pci_dev *pdev,
3696 const struct pci_device_id *ent)
1da177e4 3697{
3137553d
JS		 3698 void __iomem *addr0 = NULL, *addr2 = NULL;
3699 char *card_name = NULL;
101b8159 3700 u32 uninitialized_var(mailbox);
3137553d
JS		 3701 unsigned int device_id, nchan = 0, card_no, i;
3702 unsigned char plx_ver;
3703 int retval, irq;
02f1175c 3704
58936d8d
JS		 3705 retval = pci_enable_device(pdev);
3706 if (retval) {
3707 dev_err(&pdev->dev, "cannot enable device\n");
3137553d 3708 goto err;
58936d8d 3709 }
1da177e4 3710
58936d8d 3711 /* read PCI configuration area */
3137553d 3712 irq = pdev->irq;
58936d8d 3713 device_id = pdev->device & ~PCI_DEVICE_ID_MASK;
1da177e4 3714
3137553d
JS		 3715#if defined(__alpha__)
3716 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
3717 dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low "
3718 "addresses on Alpha systems.\n");
3719 retval = -EIO;
3720 goto err_dis;
3721 }
3722#endif
3723 if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
3724 dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low "
3725 "addresses\n");
3726 retval = -EIO;
3727 goto err_dis;
3728 }
3729
3730 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
3731 dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring "
3732 "it...\n");
3733 pdev->resource[2].flags &= ~IORESOURCE_IO;
3734 }
3735
3736 retval = pci_request_regions(pdev, "cyclades");
3737 if (retval) {
3738 dev_err(&pdev->dev, "failed to reserve resources\n");
3739 goto err_dis;
3740 }
3741
3742 retval = -EIO;
58936d8d
JS		 3743 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3744 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3137553d 3745 card_name = "Cyclom-Y";
1da177e4 3746
24e6fd4c
JS		 3747 addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
3748 CyPCI_Yctl);
3137553d
JS		 3749 if (addr0 == NULL) {
3750 dev_err(&pdev->dev, "can't remap ctl region\n");
3751 goto err_reg;
58936d8d 3752 }
24e6fd4c
JS		 3753 addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
3754 CyPCI_Ywin);
3137553d
JS		 3755 if (addr2 == NULL) {
3756 dev_err(&pdev->dev, "can't remap base region\n");
3757 goto err_unmap;
58936d8d 3758 }
1da177e4 3759
3137553d
JS		 3760 nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1);
3761 if (nchan == 0) {
21719191
JS		 3762 dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
3763 "Serial-Modules\n");
c847d47c 3764 goto err_unmap;
58936d8d 3765 }
58936d8d 3766 } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
3137553d 3767 struct RUNTIME_9060 __iomem *ctl_addr;
21719191 3768
24e6fd4c
JS		 3769 ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
3770 CyPCI_Zctl);
3137553d
JS		 3771 if (addr0 == NULL) {
3772 dev_err(&pdev->dev, "can't remap ctl region\n");
3773 goto err_reg;
3774 }
58936d8d
JS		 3775
3776 /* Disable interrupts on the PLX before resetting it */
97e87f8e
JS		 3777 cy_writew(&ctl_addr->intr_ctrl_stat,
3778 readw(&ctl_addr->intr_ctrl_stat) & ~0x0900);
58936d8d 3779
054f5b0a 3780 plx_init(pdev, irq, addr0);
02f1175c 3781
101b8159 3782 mailbox = readl(&ctl_addr->mail_box_0);
58936d8d 3783
24e6fd4c
JS		 3784 addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
3785 mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin);
3137553d
JS		 3786 if (addr2 == NULL) {
3787 dev_err(&pdev->dev, "can't remap base region\n");
3788 goto err_unmap;
58936d8d
JS		 3789 }
3790
3791 if (mailbox == ZE_V1) {
3137553d 3792 card_name = "Cyclades-Ze";
58936d8d 3793 } else {
3137553d 3794 card_name = "Cyclades-8Zo";
1da177e4 3795#ifdef CY_PCI_DEBUG
3137553d
JS		 3796 if (mailbox == ZO_V1) {
3797 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3798 dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA "
3799 "id %lx, ver %lx\n", (ulong)(0xff &
3800 readl(&((struct CUSTOM_REG *)addr2)->
3801 fpga_id)), (ulong)(0xff &
3802 readl(&((struct CUSTOM_REG *)addr2)->
3803 fpga_version)));
3804 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3805 } else {
3806 dev_info(&pdev->dev, "Cyclades-Z/PCI: New "
3807 "Cyclades-Z board. FPGA not loaded\n");
3808 }
1da177e4 3809#endif
3137553d
JS		 3810 /* The following clears the firmware id word. This
3811 ensures that the driver will not attempt to talk to
3812 the board until it has been properly initialized.
3813 */
3814 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
3815 cy_writel(addr2 + ID_ADDRESS, 0L);
58936d8d 3816 }
ace08c3c
JS		 3817
3818 retval = cyz_load_fw(pdev, addr2, addr0, irq);
963118ee 3819 if (retval <= 0)
ace08c3c 3820 goto err_unmap;
963118ee 3821 nchan = retval;
3137553d
JS		 3822 }
3823
3824 if ((cy_next_channel + nchan) > NR_PORTS) {
3825 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
3826 "channels are available. Change NR_PORTS in "
3827 "cyclades.c and recompile kernel.\n");
3828 goto err_unmap;
3829 }
3830 /* fill the next cy_card structure available */
3831 for (card_no = 0; card_no < NR_CARDS; card_no++) {
3832 if (cy_card[card_no].base_addr == NULL)
3833 break;
3834 }
3835 if (card_no == NR_CARDS) { /* no more cy_cards available */
3836 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
3837 "more cards can be used. Change NR_CARDS in "
3838 "cyclades.c and recompile kernel.\n");
3839 goto err_unmap;
3840 }
3841
3842 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3843 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3844 /* allocate IRQ */
3845 retval = request_irq(irq, cyy_interrupt,
3846 IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]);
3847 if (retval) {
3848 dev_err(&pdev->dev, "could not allocate IRQ\n");
3849 goto err_unmap;
58936d8d 3850 }
963118ee 3851 cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP;
3137553d 3852 } else {
f0eefdc3
JS		 3853 struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
3854 struct ZFW_CTRL __iomem *zfw_ctrl;
3855
3856 zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
3857
101b8159
JS		 3858 cy_card[card_no].hw_ver = mailbox;
3859 cy_card[card_no].num_chips = (unsigned int)-1;
f0eefdc3 3860 cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl;
02f1175c 3861#ifdef CONFIG_CYZ_INTR
58936d8d 3862 /* allocate IRQ only if board has an IRQ */
3137553d
JS		 3863 if (irq != 0 && irq != 255) {
3864 retval = request_irq(irq, cyz_interrupt,
58936d8d 3865 IRQF_SHARED, "Cyclades-Z",
3137553d 3866 &cy_card[card_no]);
58936d8d 3867 if (retval) {
21719191 3868 dev_err(&pdev->dev, "could not allocate IRQ\n");
3137553d 3869 goto err_unmap;
02f1175c 3870 }
58936d8d 3871 }
02f1175c 3872#endif /* CONFIG_CYZ_INTR */
3137553d 3873 }
02f1175c 3874
3137553d
JS		 3875 /* set cy_card */
3876 cy_card[card_no].base_addr = addr2;
97e87f8e 3877 cy_card[card_no].ctl_addr.p9050 = addr0;
3137553d
JS		 3878 cy_card[card_no].irq = irq;
3879 cy_card[card_no].bus_index = 1;
3880 cy_card[card_no].first_line = cy_next_channel;
963118ee 3881 cy_card[card_no].nports = nchan;
3137553d
JS		 3882 retval = cy_init_card(&cy_card[card_no]);
3883 if (retval)
3884 goto err_null;
58936d8d 3885
3137553d 3886 pci_set_drvdata(pdev, &cy_card[card_no]);
58936d8d 3887
3137553d
JS		 3888 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3889 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3890 /* enable interrupts in the PCI interface */
3891 plx_ver = readb(addr2 + CyPLX_VER) & 0x0f;
3892 switch (plx_ver) {
3893 case PLX_9050:
3137553d
JS		 3894 cy_writeb(addr0 + 0x4c, 0x43);
3895 break;
3896
3897 case PLX_9060:
3898 case PLX_9080:
3899 default: /* Old boards, use PLX_9060 */
97e87f8e
JS		 3900 {
3901 struct RUNTIME_9060 __iomem *ctl_addr = addr0;
3902 plx_init(pdev, irq, ctl_addr);
3903 cy_writew(&ctl_addr->intr_ctrl_stat,
3904 readw(&ctl_addr->intr_ctrl_stat) | 0x0900);
3137553d
JS		 3905 break;
3906 }
97e87f8e 3907 }
58936d8d
JS		 3908 }
3909
3137553d
JS		 3910 dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from "
3911 "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel);
3912 for (i = cy_next_channel; i < cy_next_channel + nchan; i++)
3913 tty_register_device(cy_serial_driver, i, &pdev->dev);
3914 cy_next_channel += nchan;
3915
58936d8d 3916 return 0;
3137553d
JS		 3917err_null:
3918 cy_card[card_no].base_addr = NULL;
3919 free_irq(irq, &cy_card[card_no]);
3920err_unmap:
24e6fd4c 3921 iounmap(addr0);
3137553d 3922 if (addr2)
24e6fd4c 3923 iounmap(addr2);
3137553d
JS		 3924err_reg:
3925 pci_release_regions(pdev);
3926err_dis:
3927 pci_disable_device(pdev);
3928err:
3929 return retval;
58936d8d 3930}
58936d8d 3931
6747cd93 3932static void __devexit cy_pci_remove(struct pci_dev *pdev)
58936d8d 3933{
38d09093 3934 struct cyclades_card *cinfo = pci_get_drvdata(pdev);
f3851e73 3935 unsigned int i;
38d09093 3936
85c93fa9 3937 /* non-Z with old PLX */
2693f485 3938 if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) ==
c2ad4c75 3939 PLX_9050)
97e87f8e 3940 cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0);
85c93fa9
JS		 3941 else
3942#ifndef CONFIG_CYZ_INTR
2693f485 3943 if (!cy_is_Z(cinfo))
85c93fa9 3944#endif
97e87f8e
JS		 3945 cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat,
3946 readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) &
3947 ~0x0900);
85c93fa9 3948
24e6fd4c 3949 iounmap(cinfo->base_addr);
97e87f8e
JS		 3950 if (cinfo->ctl_addr.p9050)
3951 iounmap(cinfo->ctl_addr.p9050);
38d09093
JS		 3952 if (cinfo->irq
3953#ifndef CONFIG_CYZ_INTR
2693f485 3954 && !cy_is_Z(cinfo)
38d09093
JS		 3955#endif /* CONFIG_CYZ_INTR */
3956 )
3957 free_irq(cinfo->irq, cinfo);
3958 pci_release_regions(pdev);
3959
3960 cinfo->base_addr = NULL;
6ad1ccc1
JS		 3961 for (i = cinfo->first_line; i < cinfo->first_line +
3962 cinfo->nports; i++)
3963 tty_unregister_device(cy_serial_driver, i);
dd025c0c
JS		 3964 cinfo->nports = 0;
3965 kfree(cinfo->ports);
38d09093
JS		 3966}
3967
6747cd93
JS		 3968static struct pci_driver cy_pci_driver = {
3969 .name = "cyclades",
3970 .id_table = cy_pci_dev_id,
3971 .probe = cy_pci_probe,
3972 .remove = __devexit_p(cy_pci_remove)
3973};
3974#endif
3975
444697d6 3976static int cyclades_proc_show(struct seq_file *m, void *v)
1da177e4 3977{
02f1175c 3978 struct cyclades_port *info;
dd025c0c 3979 unsigned int i, j;
02f1175c
JS		 3980 __u32 cur_jifs = jiffies;
3981
444697d6 3982 seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn "
02f1175c
JS		 3983 "IdleIn Overruns Ldisc\n");
3984
02f1175c 3985 /* Output one line for each known port */
dd025c0c
JS		 3986 for (i = 0; i < NR_CARDS; i++)
3987 for (j = 0; j < cy_card[i].nports; j++) {
3988 info = &cy_card[i].ports[j];
3989
d13549f8
JS		 3990 if (info->port.count) {
3991 /* XXX is the ldisc num worth this? */
3992 struct tty_struct *tty;
3993 struct tty_ldisc *ld;
3994 int num = 0;
3995 tty = tty_port_tty_get(&info->port);
3996 if (tty) {
3997 ld = tty_ldisc_ref(tty);
3998 if (ld) {
3999 num = ld->ops->num;
4000 tty_ldisc_deref(ld);
4001 }
4002 tty_kref_put(tty);
4003 }
444697d6 4004 seq_printf(m, "%3d %8lu %10lu %8lu "
d13549f8 4005 "%10lu %8lu %9lu %6d\n", info->line,
dd025c0c
JS		 4006 (cur_jifs - info->idle_stats.in_use) /
4007 HZ, info->idle_stats.xmit_bytes,
4008 (cur_jifs - info->idle_stats.xmit_idle)/
4009 HZ, info->idle_stats.recv_bytes,
4010 (cur_jifs - info->idle_stats.recv_idle)/
4011 HZ, info->idle_stats.overruns,
d13549f8
JS		 4012 num);
4013 } else
444697d6 4014 seq_printf(m, "%3d %8lu %10lu %8lu "
dd025c0c
JS		 4015 "%10lu %8lu %9lu %6ld\n",
4016 info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
02f1175c 4017 }
444697d6
AD		 4018 return 0;
4019}
4020
4021static int cyclades_proc_open(struct inode *inode, struct file *file)
4022{
4023 return single_open(file, cyclades_proc_show, NULL);
1da177e4
LT		 4024}
4025
444697d6
AD		 4026static const struct file_operations cyclades_proc_fops = {
4027 .owner = THIS_MODULE,
4028 .open = cyclades_proc_open,
4029 .read = seq_read,
4030 .llseek = seq_lseek,
4031 .release = single_release,
4032};
4033
1da177e4
LT		 4034/* The serial driver boot-time initialization code!
4035 Hardware I/O ports are mapped to character special devices on a
4036 first found, first allocated manner. That is, this code searches
4037 for Cyclom cards in the system. As each is found, it is probed
4038 to discover how many chips (and thus how many ports) are present.
4039 These ports are mapped to the tty ports 32 and upward in monotonic
4040 fashion. If an 8-port card is replaced with a 16-port card, the
4041 port mapping on a following card will shift.
4042
4043 This approach is different from what is used in the other serial
4044 device driver because the Cyclom is more properly a multiplexer,
4045 not just an aggregation of serial ports on one card.
4046
4047 If there are more cards with more ports than have been
4048 statically allocated above, a warning is printed and the
4049 extra ports are ignored.
4050 */
4051
b68e31d0 4052static const struct tty_operations cy_ops = {
02f1175c
JS		 4053 .open = cy_open,
4054 .close = cy_close,
4055 .write = cy_write,
4056 .put_char = cy_put_char,
4057 .flush_chars = cy_flush_chars,
4058 .write_room = cy_write_room,
4059 .chars_in_buffer = cy_chars_in_buffer,
4060 .flush_buffer = cy_flush_buffer,
4061 .ioctl = cy_ioctl,
4062 .throttle = cy_throttle,
4063 .unthrottle = cy_unthrottle,
4064 .set_termios = cy_set_termios,
4065 .stop = cy_stop,
4066 .start = cy_start,
4067 .hangup = cy_hangup,
4068 .break_ctl = cy_break,
4069 .wait_until_sent = cy_wait_until_sent,
02f1175c
JS		 4070 .tiocmget = cy_tiocmget,
4071 .tiocmset = cy_tiocmset,
0587102c 4072 .get_icount = cy_get_icount,
444697d6 4073 .proc_fops = &cyclades_proc_fops,
1da177e4
LT		 4074};
4075
02f1175c 4076static int __init cy_init(void)
1da177e4 4077{
dd025c0c 4078 unsigned int nboards;
9dacf3b2 4079 int retval = -ENOMEM;
02f1175c
JS		 4080
4081 cy_serial_driver = alloc_tty_driver(NR_PORTS);
4082 if (!cy_serial_driver)
9dacf3b2 4083 goto err;
21719191 4084
64a14b51 4085 printk(KERN_INFO "Cyclades driver " CY_VERSION "\n");
02f1175c
JS		 4086
4087 /* Initialize the tty_driver structure */
4088
02f1175c
JS		 4089 cy_serial_driver->driver_name = "cyclades";
4090 cy_serial_driver->name = "ttyC";
4091 cy_serial_driver->major = CYCLADES_MAJOR;
4092 cy_serial_driver->minor_start = 0;
4093 cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
4094 cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
4095 cy_serial_driver->init_termios = tty_std_termios;
4096 cy_serial_driver->init_termios.c_cflag =
4097 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
6ad1ccc1 4098 cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
02f1175c
JS		 4099 tty_set_operations(cy_serial_driver, &cy_ops);
4100
9dacf3b2
JS		 4101 retval = tty_register_driver(cy_serial_driver);
4102 if (retval) {
4103 printk(KERN_ERR "Couldn't register Cyclades serial driver\n");
4104 goto err_frtty;
4105 }
02f1175c 4106
02f1175c
JS		 4107 /* the code below is responsible to find the boards. Each different
4108 type of board has its own detection routine. If a board is found,
4109 the next cy_card structure available is set by the detection
4110 routine. These functions are responsible for checking the
4111 availability of cy_card and cy_port data structures and updating
4112 the cy_next_channel. */
4113
4114 /* look for isa boards */
14a55a67 4115 nboards = cy_detect_isa();
02f1175c 4116
6747cd93 4117#ifdef CONFIG_PCI
02f1175c 4118 /* look for pci boards */
6747cd93 4119 retval = pci_register_driver(&cy_pci_driver);
d941ea7d
JJ		 4120 if (retval && !nboards) {
4121 tty_unregister_driver(cy_serial_driver);
4122 goto err_frtty;
4123 }
6747cd93 4124#endif
9dacf3b2
JS		 4125
4126 return 0;
9dacf3b2
JS		 4127err_frtty:
4128 put_tty_driver(cy_serial_driver);
4129err:
4130 return retval;
02f1175c 4131} /* cy_init */
1da177e4 4132
02f1175c 4133static void __exit cy_cleanup_module(void)
1da177e4 4134{
dd025c0c 4135 struct cyclades_card *card;
65f76a82 4136 unsigned int i, e1;
1da177e4
LT		 4137
4138#ifndef CONFIG_CYZ_INTR
b7050906 4139 del_timer_sync(&cyz_timerlist);
1da177e4
LT		 4140#endif /* CONFIG_CYZ_INTR */
4141
15ed6cc0
AC		 4142 e1 = tty_unregister_driver(cy_serial_driver);
4143 if (e1)
21719191
JS		 4144 printk(KERN_ERR "failed to unregister Cyclades serial "
4145 "driver(%d)\n", e1);
1da177e4 4146
6747cd93
JS		 4147#ifdef CONFIG_PCI
4148 pci_unregister_driver(&cy_pci_driver);
4149#endif
4150
02f1175c 4151 for (i = 0; i < NR_CARDS; i++) {
dd025c0c
JS		 4152 card = &cy_card[i];
4153 if (card->base_addr) {
85c93fa9 4154 /* clear interrupt */
dd025c0c
JS		 4155 cy_writeb(card->base_addr + Cy_ClrIntr, 0);
4156 iounmap(card->base_addr);
97e87f8e
JS		 4157 if (card->ctl_addr.p9050)
4158 iounmap(card->ctl_addr.p9050);
dd025c0c 4159 if (card->irq
1da177e4 4160#ifndef CONFIG_CYZ_INTR
2693f485 4161 && !cy_is_Z(card)
1da177e4 4162#endif /* CONFIG_CYZ_INTR */
02f1175c 4163 )
dd025c0c 4164 free_irq(card->irq, card);
65f76a82 4165 for (e1 = card->first_line; e1 < card->first_line +
dd025c0c 4166 card->nports; e1++)
6ad1ccc1 4167 tty_unregister_device(cy_serial_driver, e1);
dd025c0c 4168 kfree(card->ports);
02f1175c
JS		 4169 }
4170 }
f2462bfe
JS		 4171
4172 put_tty_driver(cy_serial_driver);
1da177e4
LT		 4173} /* cy_cleanup_module */
4174
4175module_init(cy_init);
4176module_exit(cy_cleanup_module);
4177
4178MODULE_LICENSE("GPL");
c8e1693a 4179MODULE_VERSION(CY_VERSION);
9f56fad7 4180MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR);
e6c4ef98 4181MODULE_FIRMWARE("cyzfirm.bin");
Linux kernel - Deliverables
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