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cyclades: introduce cyy_readb/writeb
[deliverable/linux.git] / drivers / char / cyclades.c
CommitLineData
1da177e4
LT		 1#undef BLOCKMOVE
2#define Z_WAKE
3#undef Z_EXT_CHARS_IN_BUFFER
1da177e4
LT		 4
5/*
6 * linux/drivers/char/cyclades.c
7 *
8 * This file contains the driver for the Cyclades async multiport
9 * serial boards.
10 *
11 * Initially written by Randolph Bentson <bentson@grieg.seaslug.org>.
12 * Modified and maintained by Marcio Saito <marcio@cyclades.com>.
1da177e4 13 *
ebdb5135 14 * Copyright (C) 2007-2009 Jiri Slaby <jirislaby@gmail.com>
1da177e4
LT		 15 *
16 * Much of the design and some of the code came from serial.c
17 * which was copyright (C) 1991, 1992 Linus Torvalds. It was
18 * extensively rewritten by Theodore Ts'o, 8/16/92 -- 9/14/92,
19 * and then fixed as suggested by Michael K. Johnson 12/12/92.
c8e1693a 20 * Converted to pci probing and cleaned up by Jiri Slaby.
1da177e4 21 *
1da177e4
LT		 22 */
23
ebdb5135 24#define CY_VERSION "2.6"
096dcfce 25
1da177e4
LT		 26/* If you need to install more boards than NR_CARDS, change the constant
27 in the definition below. No other change is necessary to support up to
28 eight boards. Beyond that you'll have to extend cy_isa_addresses. */
29
02f1175c 30#define NR_CARDS 4
1da177e4
LT		 31
32/*
33 If the total number of ports is larger than NR_PORTS, change this
34 constant in the definition below. No other change is necessary to
35 support more boards/ports. */
36
02f1175c 37#define NR_PORTS 256
1da177e4 38
1da177e4
LT		 39#define ZO_V1 0
40#define ZO_V2 1
41#define ZE_V1 2
42
43#define SERIAL_PARANOIA_CHECK
44#undef CY_DEBUG_OPEN
45#undef CY_DEBUG_THROTTLE
46#undef CY_DEBUG_OTHER
47#undef CY_DEBUG_IO
48#undef CY_DEBUG_COUNT
49#undef CY_DEBUG_DTR
50#undef CY_DEBUG_WAIT_UNTIL_SENT
51#undef CY_DEBUG_INTERRUPTS
52#undef CY_16Y_HACK
53#undef CY_ENABLE_MONITORING
54#undef CY_PCI_DEBUG
55
1da177e4 56/*
15ed6cc0 57 * Include section
1da177e4 58 */
1da177e4
LT		 59#include <linux/module.h>
60#include <linux/errno.h>
61#include <linux/signal.h>
62#include <linux/sched.h>
63#include <linux/timer.h>
64#include <linux/interrupt.h>
65#include <linux/tty.h>
33f0f88f 66#include <linux/tty_flip.h>
1da177e4 67#include <linux/serial.h>
405f5571 68#include <linux/smp_lock.h>
1da177e4
LT		 69#include <linux/major.h>
70#include <linux/string.h>
71#include <linux/fcntl.h>
72#include <linux/ptrace.h>
73#include <linux/cyclades.h>
74#include <linux/mm.h>
75#include <linux/ioport.h>
76#include <linux/init.h>
77#include <linux/delay.h>
78#include <linux/spinlock.h>
79#include <linux/bitops.h>
054f5b0a 80#include <linux/firmware.h>
9f56fad7 81#include <linux/device.h>
1da177e4 82
15ed6cc0 83#include <linux/io.h>
15ed6cc0 84#include <linux/uaccess.h>
1da177e4 85
1da177e4
LT		 86#include <linux/kernel.h>
87#include <linux/pci.h>
88
89#include <linux/stat.h>
90#include <linux/proc_fs.h>
444697d6 91#include <linux/seq_file.h>
1da177e4 92
02f1175c 93static void cy_send_xchar(struct tty_struct *tty, char ch);
1da177e4 94
1da177e4
LT		 95#ifndef SERIAL_XMIT_SIZE
96#define SERIAL_XMIT_SIZE (min(PAGE_SIZE, 4096))
97#endif
1da177e4
LT		 98
99#define STD_COM_FLAGS (0)
100
054f5b0a
JS		 101/* firmware stuff */
102#define ZL_MAX_BLOCKS 16
103#define DRIVER_VERSION 0x02010203
104#define RAM_SIZE 0x80000
105
054f5b0a
JS		 106enum zblock_type {
107 ZBLOCK_PRG = 0,
108 ZBLOCK_FPGA = 1
109};
110
111struct zfile_header {
112 char name[64];
113 char date[32];
114 char aux[32];
115 u32 n_config;
116 u32 config_offset;
117 u32 n_blocks;
118 u32 block_offset;
119 u32 reserved[9];
120} __attribute__ ((packed));
121
122struct zfile_config {
123 char name[64];
124 u32 mailbox;
125 u32 function;
126 u32 n_blocks;
127 u32 block_list[ZL_MAX_BLOCKS];
128} __attribute__ ((packed));
129
130struct zfile_block {
131 u32 type;
132 u32 file_offset;
133 u32 ram_offset;
134 u32 size;
135} __attribute__ ((packed));
136
1da177e4
LT		 137static struct tty_driver *cy_serial_driver;
138
139#ifdef CONFIG_ISA
140/* This is the address lookup table. The driver will probe for
141 Cyclom-Y/ISA boards at all addresses in here. If you want the
142 driver to probe addresses at a different address, add it to
143 this table. If the driver is probing some other board and
144 causing problems, remove the offending address from this table.
1da177e4
LT		 145*/
146
147static unsigned int cy_isa_addresses[] = {
02f1175c
JS		 148 0xD0000,
149 0xD2000,
150 0xD4000,
151 0xD6000,
152 0xD8000,
153 0xDA000,
154 0xDC000,
155 0xDE000,
156 0, 0, 0, 0, 0, 0, 0, 0
1da177e4 157};
02f1175c 158
fe971071 159#define NR_ISA_ADDRS ARRAY_SIZE(cy_isa_addresses)
1da177e4
LT		 160
161#ifdef MODULE
3046d50e
JS		 162static long maddr[NR_CARDS];
163static int irq[NR_CARDS];
1da177e4
LT		 164
165module_param_array(maddr, long, NULL, 0);
166module_param_array(irq, int, NULL, 0);
167#endif
168
02f1175c 169#endif /* CONFIG_ISA */
1da177e4
LT		 170
171/* This is the per-card data structure containing address, irq, number of
172 channels, etc. This driver supports a maximum of NR_CARDS cards.
173*/
174static struct cyclades_card cy_card[NR_CARDS];
175
02f1175c 176static int cy_next_channel; /* next minor available */
1da177e4 177
1da177e4
LT		 178/*
179 * This is used to look up the divisor speeds and the timeouts
180 * We're normally limited to 15 distinct baud rates. The extra
77451e53 181 * are accessed via settings in info->port.flags.
1da177e4
LT		 182 * 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,
183 * 10, 11, 12, 13, 14, 15, 16, 17, 18, 19,
184 * HI VHI
185 * 20
186 */
ebdb5135 187static const int baud_table[] = {
02f1175c
JS		 188 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200,
189 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 150000,
190 230400, 0
191};
192
ebdb5135 193static const char baud_co_25[] = { /* 25 MHz clock option table */
02f1175c
JS		 194 /* value => 00 01 02 03 04 */
195 /* divide by 8 32 128 512 2048 */
196 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03, 0x03, 0x02,
197 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
198};
199
ebdb5135 200static const char baud_bpr_25[] = { /* 25 MHz baud rate period table */
02f1175c
JS		 201 0x00, 0xf5, 0xa3, 0x6f, 0x5c, 0x51, 0xf5, 0xa3, 0x51, 0xa3,
202 0x6d, 0x51, 0xa3, 0x51, 0xa3, 0x51, 0x36, 0x29, 0x1b, 0x15
203};
204
ebdb5135 205static const char baud_co_60[] = { /* 60 MHz clock option table (CD1400 J) */
02f1175c
JS		 206 /* value => 00 01 02 03 04 */
207 /* divide by 8 32 128 512 2048 */
208 0x00, 0x00, 0x00, 0x04, 0x04, 0x04, 0x04, 0x04, 0x03, 0x03,
209 0x03, 0x02, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00,
210 0x00
211};
212
ebdb5135 213static const char baud_bpr_60[] = { /* 60 MHz baud rate period table (CD1400 J) */
02f1175c
JS		 214 0x00, 0x82, 0x21, 0xff, 0xdb, 0xc3, 0x92, 0x62, 0xc3, 0x62,
215 0x41, 0xc3, 0x62, 0xc3, 0x62, 0xc3, 0x82, 0x62, 0x41, 0x32,
216 0x21
217};
218
ebdb5135 219static const char baud_cor3[] = { /* receive threshold */
02f1175c
JS		 220 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
221 0x0a, 0x0a, 0x0a, 0x09, 0x09, 0x08, 0x08, 0x08, 0x08, 0x07,
222 0x07
223};
1da177e4
LT		 224
225/*
226 * The Cyclades driver implements HW flow control as any serial driver.
15ed6cc0
AC		 227 * The cyclades_port structure member rflow and the vector rflow_thr
228 * allows us to take advantage of a special feature in the CD1400 to avoid
229 * data loss even when the system interrupt latency is too high. These flags
230 * are to be used only with very special applications. Setting these flags
231 * requires the use of a special cable (DTR and RTS reversed). In the new
232 * CD1400-based boards (rev. 6.00 or later), there is no need for special
1da177e4
LT		 233 * cables.
234 */
235
ebdb5135 236static const char rflow_thr[] = { /* rflow threshold */
02f1175c
JS		 237 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
238 0x00, 0x00, 0x00, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a, 0x0a,
239 0x0a
240};
1da177e4
LT		 241
242/* The Cyclom-Ye has placed the sequential chips in non-sequential
243 * address order. This look-up table overcomes that problem.
244 */
f0eefdc3 245static const unsigned int cy_chip_offset[] = { 0x0000,
02f1175c
JS		 246 0x0400,
247 0x0800,
248 0x0C00,
249 0x0200,
250 0x0600,
251 0x0A00,
252 0x0E00
253};
1da177e4
LT		 254
255/* PCI related definitions */
256
1da177e4 257#ifdef CONFIG_PCI
ebdb5135 258static const struct pci_device_id cy_pci_dev_id[] = {
15ed6cc0
AC		 259 /* PCI < 1Mb */
260 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Lo) },
261 /* PCI > 1Mb */
262 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Y_Hi) },
263 /* 4Y PCI < 1Mb */
264 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Lo) },
265 /* 4Y PCI > 1Mb */
266 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_4Y_Hi) },
267 /* 8Y PCI < 1Mb */
268 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Lo) },
269 /* 8Y PCI > 1Mb */
270 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_8Y_Hi) },
271 /* Z PCI < 1Mb */
272 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Lo) },
273 /* Z PCI > 1Mb */
274 { PCI_DEVICE(PCI_VENDOR_ID_CYCLADES, PCI_DEVICE_ID_CYCLOM_Z_Hi) },
893de2df 275 { } /* end of table */
02f1175c 276};
893de2df 277MODULE_DEVICE_TABLE(pci, cy_pci_dev_id);
1da177e4
LT		 278#endif
279
280static void cy_start(struct tty_struct *);
d13549f8 281static void cy_set_line_char(struct cyclades_port *, struct tty_struct *);
1a86b5e3 282static int cyz_issue_cmd(struct cyclades_card *, __u32, __u8, __u32);
1da177e4
LT		 283#ifdef CONFIG_ISA
284static unsigned detect_isa_irq(void __iomem *);
02f1175c 285#endif /* CONFIG_ISA */
1da177e4 286
1da177e4
LT		 287#ifndef CONFIG_CYZ_INTR
288static void cyz_poll(unsigned long);
289
290/* The Cyclades-Z polling cycle is defined by this variable */
291static long cyz_polling_cycle = CZ_DEF_POLL;
292
8d06afab 293static DEFINE_TIMER(cyz_timerlist, cyz_poll, 0, 0);
1da177e4 294
02f1175c 295#else /* CONFIG_CYZ_INTR */
1da177e4
LT		 296static void cyz_rx_restart(unsigned long);
297static struct timer_list cyz_rx_full_timer[NR_PORTS];
02f1175c 298#endif /* CONFIG_CYZ_INTR */
1da177e4 299
3aeea5b9
JS		 300static inline void cyy_writeb(struct cyclades_port *port, u32 reg, u8 val)
301{
302 struct cyclades_card *card = port->card;
303
304 cy_writeb(port->u.cyy.base_addr + (reg << card->bus_index), val);
305}
306
307static inline u8 cyy_readb(struct cyclades_port *port, u32 reg)
308{
309 struct cyclades_card *card = port->card;
310
311 return readb(port->u.cyy.base_addr + (reg << card->bus_index));
312}
313
2693f485
JS		 314static inline bool cy_is_Z(struct cyclades_card *card)
315{
316 return card->num_chips == (unsigned int)-1;
317}
318
319static inline bool __cyz_fpga_loaded(struct RUNTIME_9060 __iomem *ctl_addr)
320{
321 return readl(&ctl_addr->init_ctrl) & (1 << 17);
322}
323
324static inline bool cyz_fpga_loaded(struct cyclades_card *card)
325{
326 return __cyz_fpga_loaded(card->ctl_addr.p9060);
327}
328
329static inline bool cyz_is_loaded(struct cyclades_card *card)
330{
331 struct FIRM_ID __iomem *fw_id = card->base_addr + ID_ADDRESS;
332
333 return (card->hw_ver == ZO_V1 || cyz_fpga_loaded(card)) &&
334 readl(&fw_id->signature) == ZFIRM_ID;
335}
336
02f1175c 337static inline int serial_paranoia_check(struct cyclades_port *info,
ebdb5135 338 const char *name, const char *routine)
1da177e4
LT		 339{
340#ifdef SERIAL_PARANOIA_CHECK
02f1175c 341 if (!info) {
21719191
JS		 342 printk(KERN_WARNING "cyc Warning: null cyclades_port for (%s) "
343 "in %s\n", name, routine);
02f1175c
JS		 344 return 1;
345 }
346
02f1175c 347 if (info->magic != CYCLADES_MAGIC) {
21719191
JS		 348 printk(KERN_WARNING "cyc Warning: bad magic number for serial "
349 "struct (%s) in %s\n", name, routine);
02f1175c
JS		 350 return 1;
351 }
1da177e4 352#endif
02f1175c 353 return 0;
ebdb5135 354}
1da177e4 355
1da177e4
LT		 356/***********************************************************/
357/********* Start of block of Cyclom-Y specific code ********/
358
359/* This routine waits up to 1000 micro-seconds for the previous
360 command to the Cirrus chip to complete and then issues the
361 new command. An error is returned if the previous command
362 didn't finish within the time limit.
363
364 This function is only called from inside spinlock-protected code.
365 */
3aeea5b9 366static int __cyy_issue_cmd(void __iomem *base_addr, u8 cmd, int index)
1da177e4 367{
3aeea5b9 368 void __iomem *ccr = base_addr + (CyCCR << index);
ad39c300 369 unsigned int i;
1da177e4 370
02f1175c
JS		 371 /* Check to see that the previous command has completed */
372 for (i = 0; i < 100; i++) {
3aeea5b9 373 if (readb(ccr) == 0)
02f1175c 374 break;
02f1175c 375 udelay(10L);
1da177e4 376 }
02f1175c
JS		 377 /* if the CCR never cleared, the previous command
378 didn't finish within the "reasonable time" */
379 if (i == 100)
096dcfce 380 return -1;
1da177e4 381
02f1175c 382 /* Issue the new command */
3aeea5b9 383 cy_writeb(ccr, cmd);
1da177e4 384
096dcfce 385 return 0;
3aeea5b9
JS		 386}
387
388static inline int cyy_issue_cmd(struct cyclades_port *port, u8 cmd)
389{
390 return __cyy_issue_cmd(port->u.cyy.base_addr, cmd,
391 port->card->bus_index);
392}
1da177e4
LT		 393
394#ifdef CONFIG_ISA
395/* ISA interrupt detection code */
15ed6cc0 396static unsigned detect_isa_irq(void __iomem *address)
1da177e4 397{
02f1175c
JS		 398 int irq;
399 unsigned long irqs, flags;
400 int save_xir, save_car;
401 int index = 0; /* IRQ probing is only for ISA */
402
403 /* forget possible initially masked and pending IRQ */
404 irq = probe_irq_off(probe_irq_on());
405
406 /* Clear interrupts on the board first */
407 cy_writeb(address + (Cy_ClrIntr << index), 0);
408 /* Cy_ClrIntr is 0x1800 */
409
410 irqs = probe_irq_on();
411 /* Wait ... */
f6e208c1 412 msleep(5);
02f1175c
JS		 413
414 /* Enable the Tx interrupts on the CD1400 */
415 local_irq_save(flags);
416 cy_writeb(address + (CyCAR << index), 0);
3aeea5b9 417 __cyy_issue_cmd(address, CyCHAN_CTL | CyENB_XMTR, index);
02f1175c
JS		 418
419 cy_writeb(address + (CyCAR << index), 0);
420 cy_writeb(address + (CySRER << index),
db05c3b1 421 readb(address + (CySRER << index)) | CyTxRdy);
02f1175c
JS		 422 local_irq_restore(flags);
423
424 /* Wait ... */
f6e208c1 425 msleep(5);
02f1175c
JS		 426
427 /* Check which interrupt is in use */
428 irq = probe_irq_off(irqs);
429
430 /* Clean up */
db05c3b1
JS		 431 save_xir = (u_char) readb(address + (CyTIR << index));
432 save_car = readb(address + (CyCAR << index));
02f1175c
JS		 433 cy_writeb(address + (CyCAR << index), (save_xir & 0x3));
434 cy_writeb(address + (CySRER << index),
db05c3b1 435 readb(address + (CySRER << index)) & ~CyTxRdy);
02f1175c
JS		 436 cy_writeb(address + (CyTIR << index), (save_xir & 0x3f));
437 cy_writeb(address + (CyCAR << index), (save_car));
438 cy_writeb(address + (Cy_ClrIntr << index), 0);
439 /* Cy_ClrIntr is 0x1800 */
440
441 return (irq > 0) ? irq : 0;
1da177e4 442}
02f1175c 443#endif /* CONFIG_ISA */
1da177e4 444
ce97a097
JS		 445static void cyy_chip_rx(struct cyclades_card *cinfo, int chip,
446 void __iomem *base_addr)
e941027f
JS		 447{
448 struct cyclades_port *info;
449 struct tty_struct *tty;
65f76a82 450 int len, index = cinfo->bus_index;
3aeea5b9 451 u8 ivr, save_xir, channel, save_car, data, char_count;
e941027f 452
e941027f 453#ifdef CY_DEBUG_INTERRUPTS
ce97a097 454 printk(KERN_DEBUG "cyy_interrupt: rcvd intr, chip %d\n", chip);
e941027f 455#endif
ce97a097 456 /* determine the channel & change to that context */
65f76a82
JS		 457 save_xir = readb(base_addr + (CyRIR << index));
458 channel = save_xir & CyIRChannel;
ce97a097 459 info = &cinfo->ports[channel + chip * 4];
3aeea5b9
JS		 460 save_car = cyy_readb(info, CyCAR);
461 cyy_writeb(info, CyCAR, save_xir);
462 ivr = cyy_readb(info, CyRIVR) & CyIVRMask;
ce97a097 463
d13549f8 464 tty = tty_port_tty_get(&info->port);
ce97a097 465 /* if there is nowhere to put the data, discard it */
d13549f8 466 if (tty == NULL) {
3aeea5b9
JS		 467 if (ivr == CyIVRRxEx) { /* exception */
468 data = cyy_readb(info, CyRDSR);
ce97a097 469 } else { /* normal character reception */
3aeea5b9 470 char_count = cyy_readb(info, CyRDCR);
ce97a097 471 while (char_count--)
3aeea5b9 472 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 473 }
474 goto end;
475 }
476 /* there is an open port for this data */
3aeea5b9
JS		 477 if (ivr == CyIVRRxEx) { /* exception */
478 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 479
480 /* For statistics only */
481 if (data & CyBREAK)
482 info->icount.brk++;
483 else if (data & CyFRAME)
484 info->icount.frame++;
485 else if (data & CyPARITY)
486 info->icount.parity++;
487 else if (data & CyOVERRUN)
488 info->icount.overrun++;
489
490 if (data & info->ignore_status_mask) {
491 info->icount.rx++;
d13549f8 492 tty_kref_put(tty);
ce97a097
JS		 493 return;
494 }
495 if (tty_buffer_request_room(tty, 1)) {
496 if (data & info->read_status_mask) {
497 if (data & CyBREAK) {
498 tty_insert_flip_char(tty,
3aeea5b9
JS		 499 cyy_readb(info, CyRDSR),
500 TTY_BREAK);
ce97a097 501 info->icount.rx++;
77451e53 502 if (info->port.flags & ASYNC_SAK)
ce97a097
JS		 503 do_SAK(tty);
504 } else if (data & CyFRAME) {
15ed6cc0 505 tty_insert_flip_char(tty,
3aeea5b9
JS		 506 cyy_readb(info, CyRDSR),
507 TTY_FRAME);
ce97a097
JS		 508 info->icount.rx++;
509 info->idle_stats.frame_errs++;
510 } else if (data & CyPARITY) {
511 /* Pieces of seven... */
512 tty_insert_flip_char(tty,
3aeea5b9
JS		 513 cyy_readb(info, CyRDSR),
514 TTY_PARITY);
ce97a097
JS		 515 info->icount.rx++;
516 info->idle_stats.parity_errs++;
517 } else if (data & CyOVERRUN) {
518 tty_insert_flip_char(tty, 0,
519 TTY_OVERRUN);
520 info->icount.rx++;
521 /* If the flip buffer itself is
522 overflowing, we still lose
523 the next incoming character.
524 */
525 tty_insert_flip_char(tty,
3aeea5b9
JS		 526 cyy_readb(info, CyRDSR),
527 TTY_FRAME);
02f1175c 528 info->icount.rx++;
02f1175c 529 info->idle_stats.overruns++;
ce97a097
JS		 530 /* These two conditions may imply */
531 /* a normal read should be done. */
532 /* } else if(data & CyTIMEOUT) { */
533 /* } else if(data & CySPECHAR) { */
534 } else {
535 tty_insert_flip_char(tty, 0,
536 TTY_NORMAL);
537 info->icount.rx++;
02f1175c 538 }
ce97a097
JS		 539 } else {
540 tty_insert_flip_char(tty, 0, TTY_NORMAL);
541 info->icount.rx++;
542 }
543 } else {
544 /* there was a software buffer overrun and nothing
545 * could be done about it!!! */
546 info->icount.buf_overrun++;
547 info->idle_stats.overruns++;
548 }
549 } else { /* normal character reception */
550 /* load # chars available from the chip */
3aeea5b9 551 char_count = cyy_readb(info, CyRDCR);
e941027f
JS		 552
553#ifdef CY_ENABLE_MONITORING
ce97a097
JS		 554 ++info->mon.int_count;
555 info->mon.char_count += char_count;
556 if (char_count > info->mon.char_max)
557 info->mon.char_max = char_count;
558 info->mon.char_last = char_count;
e941027f 559#endif
ce97a097
JS		 560 len = tty_buffer_request_room(tty, char_count);
561 while (len--) {
3aeea5b9 562 data = cyy_readb(info, CyRDSR);
ce97a097
JS		 563 tty_insert_flip_char(tty, data, TTY_NORMAL);
564 info->idle_stats.recv_bytes++;
565 info->icount.rx++;
e941027f 566#ifdef CY_16Y_HACK
ce97a097 567 udelay(10L);
e941027f 568#endif
e941027f 569 }
ce97a097 570 info->idle_stats.recv_idle = jiffies;
e941027f 571 }
ce97a097 572 tty_schedule_flip(tty);
d13549f8 573 tty_kref_put(tty);
ce97a097
JS		 574end:
575 /* end of service */
3aeea5b9
JS		 576 cyy_writeb(info, CyRIR, save_xir & 0x3f);
577 cyy_writeb(info, CyCAR, save_car);
ce97a097 578}
e941027f 579
65f76a82 580static void cyy_chip_tx(struct cyclades_card *cinfo, unsigned int chip,
ce97a097
JS		 581 void __iomem *base_addr)
582{
583 struct cyclades_port *info;
d13549f8 584 struct tty_struct *tty;
65f76a82
JS		 585 int char_count, index = cinfo->bus_index;
586 u8 save_xir, channel, save_car, outch;
ce97a097
JS		 587
588 /* Since we only get here when the transmit buffer
589 is empty, we know we can always stuff a dozen
590 characters. */
e941027f 591#ifdef CY_DEBUG_INTERRUPTS
ce97a097 592 printk(KERN_DEBUG "cyy_interrupt: xmit intr, chip %d\n", chip);
e941027f
JS		 593#endif
594
ce97a097 595 /* determine the channel & change to that context */
65f76a82
JS		 596 save_xir = readb(base_addr + (CyTIR << index));
597 channel = save_xir & CyIRChannel;
ce97a097
JS		 598 save_car = readb(base_addr + (CyCAR << index));
599 cy_writeb(base_addr + (CyCAR << index), save_xir);
600
601 /* validate the port# (as configured and open) */
602 if (channel + chip * 4 >= cinfo->nports) {
603 cy_writeb(base_addr + (CySRER << index),
604 readb(base_addr + (CySRER << index)) & ~CyTxRdy);
605 goto end;
606 }
607 info = &cinfo->ports[channel + chip * 4];
d13549f8
JS		 608 tty = tty_port_tty_get(&info->port);
609 if (tty == NULL) {
3aeea5b9 610 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 611 goto end;
612 }
02f1175c 613
ce97a097
JS		 614 /* load the on-chip space for outbound data */
615 char_count = info->xmit_fifo_size;
02f1175c 616
ce97a097
JS		 617 if (info->x_char) { /* send special char */
618 outch = info->x_char;
3aeea5b9 619 cyy_writeb(info, CyTDR, outch);
ce97a097
JS		 620 char_count--;
621 info->icount.tx++;
622 info->x_char = 0;
623 }
02f1175c 624
ce97a097
JS		 625 if (info->breakon || info->breakoff) {
626 if (info->breakon) {
3aeea5b9
JS		 627 cyy_writeb(info, CyTDR, 0);
628 cyy_writeb(info, CyTDR, 0x81);
ce97a097
JS		 629 info->breakon = 0;
630 char_count -= 2;
e941027f 631 }
ce97a097 632 if (info->breakoff) {
3aeea5b9
JS		 633 cyy_writeb(info, CyTDR, 0);
634 cyy_writeb(info, CyTDR, 0x83);
ce97a097
JS		 635 info->breakoff = 0;
636 char_count -= 2;
e941027f 637 }
ce97a097 638 }
02f1175c 639
ce97a097
JS		 640 while (char_count-- > 0) {
641 if (!info->xmit_cnt) {
3aeea5b9
JS		 642 if (cyy_readb(info, CySRER) & CyTxMpty) {
643 cyy_writeb(info, CySRER,
644 cyy_readb(info, CySRER) & ~CyTxMpty);
ce97a097 645 } else {
3aeea5b9
JS		 646 cyy_writeb(info, CySRER, CyTxMpty |
647 (cyy_readb(info, CySRER) & ~CyTxRdy));
02f1175c 648 }
ce97a097
JS		 649 goto done;
650 }
77451e53 651 if (info->port.xmit_buf == NULL) {
3aeea5b9
JS		 652 cyy_writeb(info, CySRER,
653 cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 654 goto done;
655 }
d13549f8 656 if (tty->stopped || tty->hw_stopped) {
3aeea5b9
JS		 657 cyy_writeb(info, CySRER,
658 cyy_readb(info, CySRER) & ~CyTxRdy);
ce97a097
JS		 659 goto done;
660 }
661 /* Because the Embedded Transmit Commands have been enabled,
662 * we must check to see if the escape character, NULL, is being
663 * sent. If it is, we must ensure that there is room for it to
664 * be doubled in the output stream. Therefore we no longer
665 * advance the pointer when the character is fetched, but
666 * rather wait until after the check for a NULL output
667 * character. This is necessary because there may not be room
668 * for the two chars needed to send a NULL.)
669 */
77451e53 670 outch = info->port.xmit_buf[info->xmit_tail];
ce97a097
JS		 671 if (outch) {
672 info->xmit_cnt--;
673 info->xmit_tail = (info->xmit_tail + 1) &
674 (SERIAL_XMIT_SIZE - 1);
3aeea5b9 675 cyy_writeb(info, CyTDR, outch);
ce97a097
JS		 676 info->icount.tx++;
677 } else {
678 if (char_count > 1) {
02f1175c
JS		 679 info->xmit_cnt--;
680 info->xmit_tail = (info->xmit_tail + 1) &
ce97a097 681 (SERIAL_XMIT_SIZE - 1);
3aeea5b9
JS		 682 cyy_writeb(info, CyTDR, outch);
683 cyy_writeb(info, CyTDR, 0);
02f1175c 684 info->icount.tx++;
ce97a097 685 char_count--;
02f1175c 686 }
e941027f 687 }
e941027f
JS		 688 }
689
ce97a097 690done:
d13549f8
JS		 691 tty_wakeup(tty);
692 tty_kref_put(tty);
ce97a097
JS		 693end:
694 /* end of service */
3aeea5b9
JS		 695 cyy_writeb(info, CyTIR, save_xir & 0x3f);
696 cyy_writeb(info, CyCAR, save_car);
ce97a097 697}
02f1175c 698
ce97a097
JS		 699static void cyy_chip_modem(struct cyclades_card *cinfo, int chip,
700 void __iomem *base_addr)
701{
702 struct cyclades_port *info;
d13549f8 703 struct tty_struct *tty;
65f76a82
JS		 704 int index = cinfo->bus_index;
705 u8 save_xir, channel, save_car, mdm_change, mdm_status;
ce97a097
JS		 706
707 /* determine the channel & change to that context */
65f76a82
JS		 708 save_xir = readb(base_addr + (CyMIR << index));
709 channel = save_xir & CyIRChannel;
ce97a097 710 info = &cinfo->ports[channel + chip * 4];
3aeea5b9
JS		 711 save_car = cyy_readb(info, CyCAR);
712 cyy_writeb(info, CyCAR, save_xir);
ce97a097 713
3aeea5b9
JS		 714 mdm_change = cyy_readb(info, CyMISR);
715 mdm_status = cyy_readb(info, CyMSVR1);
ce97a097 716
d13549f8
JS		 717 tty = tty_port_tty_get(&info->port);
718 if (!tty)
ce97a097
JS		 719 goto end;
720
721 if (mdm_change & CyANY_DELTA) {
722 /* For statistics only */
723 if (mdm_change & CyDCD)
724 info->icount.dcd++;
725 if (mdm_change & CyCTS)
726 info->icount.cts++;
727 if (mdm_change & CyDSR)
728 info->icount.dsr++;
729 if (mdm_change & CyRI)
730 info->icount.rng++;
731
732 wake_up_interruptible(&info->delta_msr_wait);
733 }
734
77451e53 735 if ((mdm_change & CyDCD) && (info->port.flags & ASYNC_CHECK_CD)) {
174e6fe0
JS		 736 if (mdm_status & CyDCD)
737 wake_up_interruptible(&info->port.open_wait);
738 else
d13549f8 739 tty_hangup(tty);
ce97a097 740 }
77451e53 741 if ((mdm_change & CyCTS) && (info->port.flags & ASYNC_CTS_FLOW)) {
d13549f8 742 if (tty->hw_stopped) {
ce97a097
JS		 743 if (mdm_status & CyCTS) {
744 /* cy_start isn't used
745 because... !!! */
d13549f8 746 tty->hw_stopped = 0;
3aeea5b9
JS		 747 cyy_writeb(info, CySRER,
748 cyy_readb(info, CySRER) | CyTxRdy);
d13549f8 749 tty_wakeup(tty);
02f1175c 750 }
ce97a097
JS		 751 } else {
752 if (!(mdm_status & CyCTS)) {
753 /* cy_stop isn't used
754 because ... !!! */
d13549f8 755 tty->hw_stopped = 1;
3aeea5b9
JS		 756 cyy_writeb(info, CySRER,
757 cyy_readb(info, CySRER) & ~CyTxRdy);
02f1175c 758 }
e941027f 759 }
e941027f 760 }
ce97a097
JS		 761/* if (mdm_change & CyDSR) {
762 }
763 if (mdm_change & CyRI) {
764 }*/
d13549f8 765 tty_kref_put(tty);
ce97a097
JS		 766end:
767 /* end of service */
3aeea5b9
JS		 768 cyy_writeb(info, CyMIR, save_xir & 0x3f);
769 cyy_writeb(info, CyCAR, save_car);
e941027f
JS		 770}
771
1da177e4
LT		 772/* The real interrupt service routine is called
773 whenever the card wants its hand held--chars
774 received, out buffer empty, modem change, etc.
775 */
02f1175c 776static irqreturn_t cyy_interrupt(int irq, void *dev_id)
1da177e4 777{
02f1175c 778 int status;
f7429034 779 struct cyclades_card *cinfo = dev_id;
02f1175c 780 void __iomem *base_addr, *card_base_addr;
65f76a82 781 unsigned int chip, too_many, had_work;
02f1175c 782 int index;
02f1175c 783
f7429034 784 if (unlikely(cinfo == NULL)) {
1da177e4 785#ifdef CY_DEBUG_INTERRUPTS
15ed6cc0
AC		 786 printk(KERN_DEBUG "cyy_interrupt: spurious interrupt %d\n",
787 irq);
1da177e4 788#endif
02f1175c
JS		 789 return IRQ_NONE; /* spurious interrupt */
790 }
791
792 card_base_addr = cinfo->base_addr;
793 index = cinfo->bus_index;
794
f1e83c6c
JS		 795 /* card was not initialized yet (e.g. DEBUG_SHIRQ) */
796 if (unlikely(card_base_addr == NULL))
797 return IRQ_HANDLED;
798
02f1175c
JS		 799 /* This loop checks all chips in the card. Make a note whenever
800 _any_ chip had some work to do, as this is considered an
801 indication that there will be more to do. Only when no chip
802 has any work does this outermost loop exit.
803 */
804 do {
805 had_work = 0;
806 for (chip = 0; chip < cinfo->num_chips; chip++) {
807 base_addr = cinfo->base_addr +
808 (cy_chip_offset[chip] << index);
809 too_many = 0;
db05c3b1 810 while ((status = readb(base_addr +
02f1175c
JS		 811 (CySVRR << index))) != 0x00) {
812 had_work++;
813 /* The purpose of the following test is to ensure that
814 no chip can monopolize the driver. This forces the
815 chips to be checked in a round-robin fashion (after
816 draining each of a bunch (1000) of characters).
817 */
ce97a097 818 if (1000 < too_many++)
02f1175c 819 break;
1c0a387c 820 spin_lock(&cinfo->card_lock);
ce97a097
JS		 821 if (status & CySRReceive) /* rx intr */
822 cyy_chip_rx(cinfo, chip, base_addr);
823 if (status & CySRTransmit) /* tx intr */
824 cyy_chip_tx(cinfo, chip, base_addr);
825 if (status & CySRModem) /* modem intr */
826 cyy_chip_modem(cinfo, chip, base_addr);
1c0a387c 827 spin_unlock(&cinfo->card_lock);
02f1175c
JS		 828 }
829 }
830 } while (had_work);
831
832 /* clear interrupts */
833 spin_lock(&cinfo->card_lock);
834 cy_writeb(card_base_addr + (Cy_ClrIntr << index), 0);
835 /* Cy_ClrIntr is 0x1800 */
836 spin_unlock(&cinfo->card_lock);
837 return IRQ_HANDLED;
838} /* cyy_interrupt */
1da177e4 839
4d768200
JS		 840static void cyy_change_rts_dtr(struct cyclades_port *info, unsigned int set,
841 unsigned int clear)
842{
843 struct cyclades_card *card = info->card;
3aeea5b9 844 int channel = info->line - card->first_line;
0d348729 845 u32 rts, dtr, msvrr, msvrd;
4d768200 846
4d768200 847 channel &= 0x03;
4d768200 848
0d348729
JS		 849 if (info->rtsdtr_inv) {
850 msvrr = CyMSVR2;
851 msvrd = CyMSVR1;
852 rts = CyDTR;
853 dtr = CyRTS;
854 } else {
855 msvrr = CyMSVR1;
856 msvrd = CyMSVR2;
857 rts = CyRTS;
858 dtr = CyDTR;
859 }
4d768200 860 if (set & TIOCM_RTS) {
3aeea5b9
JS		 861 cyy_writeb(info, CyCAR, channel);
862 cyy_writeb(info, msvrr, rts);
4d768200
JS		 863 }
864 if (clear & TIOCM_RTS) {
3aeea5b9
JS		 865 cyy_writeb(info, CyCAR, channel);
866 cyy_writeb(info, msvrr, ~rts);
4d768200
JS		 867 }
868 if (set & TIOCM_DTR) {
3aeea5b9
JS		 869 cyy_writeb(info, CyCAR, channel);
870 cyy_writeb(info, msvrd, dtr);
4d768200
JS		 871#ifdef CY_DEBUG_DTR
872 printk(KERN_DEBUG "cyc:set_modem_info raising DTR\n");
873 printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
3aeea5b9
JS		 874 cyy_readb(info, CyMSVR1),
875 cyy_readb(info, CyMSVR2));
4d768200
JS		 876#endif
877 }
878 if (clear & TIOCM_DTR) {
3aeea5b9
JS		 879 cyy_writeb(info, CyCAR, channel);
880 cyy_writeb(info, msvrd, ~dtr);
4d768200
JS		 881#ifdef CY_DEBUG_DTR
882 printk(KERN_DEBUG "cyc:set_modem_info dropping DTR\n");
883 printk(KERN_DEBUG " status: 0x%x, 0x%x\n",
3aeea5b9
JS		 884 cyy_readb(info, CyMSVR1),
885 cyy_readb(info, CyMSVR2));
4d768200
JS		 886#endif
887 }
888}
889
1da177e4
LT		 890/***********************************************************/
891/********* End of block of Cyclom-Y specific code **********/
15ed6cc0 892/******** Start of block of Cyclades-Z specific code *******/
1da177e4
LT		 893/***********************************************************/
894
895static int
02f1175c 896cyz_fetch_msg(struct cyclades_card *cinfo,
15ed6cc0 897 __u32 *channel, __u8 *cmd, __u32 *param)
1da177e4 898{
f0eefdc3 899 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
02f1175c
JS		 900 unsigned long loc_doorbell;
901
97e87f8e 902 loc_doorbell = readl(&cinfo->ctl_addr.p9060->loc_doorbell);
02f1175c
JS		 903 if (loc_doorbell) {
904 *cmd = (char)(0xff & loc_doorbell);
db05c3b1
JS		 905 *channel = readl(&board_ctrl->fwcmd_channel);
906 *param = (__u32) readl(&board_ctrl->fwcmd_param);
97e87f8e 907 cy_writel(&cinfo->ctl_addr.p9060->loc_doorbell, 0xffffffff);
02f1175c
JS		 908 return 1;
909 }
910 return 0;
911} /* cyz_fetch_msg */
1da177e4
LT		 912
913static int
02f1175c 914cyz_issue_cmd(struct cyclades_card *cinfo,
1a86b5e3 915 __u32 channel, __u8 cmd, __u32 param)
1da177e4 916{
f0eefdc3 917 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
1a86b5e3 918 __u32 __iomem *pci_doorbell;
65f76a82 919 unsigned int index;
02f1175c 920
2693f485 921 if (!cyz_is_loaded(cinfo))
096dcfce 922 return -1;
15ed6cc0 923
02f1175c 924 index = 0;
97e87f8e 925 pci_doorbell = &cinfo->ctl_addr.p9060->pci_doorbell;
db05c3b1 926 while ((readl(pci_doorbell) & 0xff) != 0) {
15ed6cc0 927 if (index++ == 1000)
db05c3b1 928 return (int)(readl(pci_doorbell) & 0xff);
02f1175c
JS		 929 udelay(50L);
930 }
931 cy_writel(&board_ctrl->hcmd_channel, channel);
932 cy_writel(&board_ctrl->hcmd_param, param);
933 cy_writel(pci_doorbell, (long)cmd);
934
096dcfce 935 return 0;
02f1175c 936} /* cyz_issue_cmd */
1da177e4 937
f0eefdc3 938static void cyz_handle_rx(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 939{
f0eefdc3 940 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
875b206b 941 struct cyclades_card *cinfo = info->card;
65f76a82 942 unsigned int char_count;
02f1175c 943 int len;
1da177e4 944#ifdef BLOCKMOVE
ce71b0ff 945 unsigned char *buf;
1da177e4 946#else
02f1175c 947 char data;
1da177e4 948#endif
ad39c300 949 __u32 rx_put, rx_get, new_rx_get, rx_bufsize, rx_bufaddr;
1da177e4 950
db05c3b1
JS		 951 rx_get = new_rx_get = readl(&buf_ctrl->rx_get);
952 rx_put = readl(&buf_ctrl->rx_put);
953 rx_bufsize = readl(&buf_ctrl->rx_bufsize);
954 rx_bufaddr = readl(&buf_ctrl->rx_bufaddr);
02f1175c
JS		 955 if (rx_put >= rx_get)
956 char_count = rx_put - rx_get;
957 else
958 char_count = rx_put - rx_get + rx_bufsize;
1da177e4 959
02f1175c 960 if (char_count) {
1da177e4 961#ifdef CY_ENABLE_MONITORING
02f1175c
JS		 962 info->mon.int_count++;
963 info->mon.char_count += char_count;
964 if (char_count > info->mon.char_max)
965 info->mon.char_max = char_count;
966 info->mon.char_last = char_count;
1da177e4 967#endif
f7429034 968 if (tty == NULL) {
02f1175c
JS		 969 /* flush received characters */
970 new_rx_get = (new_rx_get + char_count) &
971 (rx_bufsize - 1);
972 info->rflush_count++;
973 } else {
1da177e4 974#ifdef BLOCKMOVE
02f1175c
JS		 975 /* we'd like to use memcpy(t, f, n) and memset(s, c, count)
976 for performance, but because of buffer boundaries, there
977 may be several steps to the operation */
ce71b0ff
JS		 978 while (1) {
979 len = tty_prepare_flip_string(tty, &buf,
980 char_count);
981 if (!len)
982 break;
983
984 len = min_t(unsigned int, min(len, char_count),
985 rx_bufsize - new_rx_get);
986
987 memcpy_fromio(buf, cinfo->base_addr +
988 rx_bufaddr + new_rx_get, len);
989
990 new_rx_get = (new_rx_get + len) &
02f1175c 991 (rx_bufsize - 1);
ce71b0ff
JS		 992 char_count -= len;
993 info->icount.rx += len;
994 info->idle_stats.recv_bytes += len;
02f1175c 995 }
1da177e4 996#else
02f1175c
JS		 997 len = tty_buffer_request_room(tty, char_count);
998 while (len--) {
db05c3b1 999 data = readb(cinfo->base_addr + rx_bufaddr +
02f1175c 1000 new_rx_get);
15ed6cc0
AC		 1001 new_rx_get = (new_rx_get + 1) &
1002 (rx_bufsize - 1);
02f1175c
JS		 1003 tty_insert_flip_char(tty, data, TTY_NORMAL);
1004 info->idle_stats.recv_bytes++;
1005 info->icount.rx++;
1006 }
1da177e4
LT		 1007#endif
1008#ifdef CONFIG_CYZ_INTR
02f1175c
JS		 1009 /* Recalculate the number of chars in the RX buffer and issue
1010 a cmd in case it's higher than the RX high water mark */
db05c3b1 1011 rx_put = readl(&buf_ctrl->rx_put);
02f1175c
JS		 1012 if (rx_put >= rx_get)
1013 char_count = rx_put - rx_get;
1014 else
1015 char_count = rx_put - rx_get + rx_bufsize;
65f76a82 1016 if (char_count >= readl(&buf_ctrl->rx_threshold) &&
ebafeeff
JS		 1017 !timer_pending(&cyz_rx_full_timer[
1018 info->line]))
1019 mod_timer(&cyz_rx_full_timer[info->line],
1020 jiffies + 1);
1da177e4 1021#endif
02f1175c
JS		 1022 info->idle_stats.recv_idle = jiffies;
1023 tty_schedule_flip(tty);
1024 }
1025 /* Update rx_get */
1026 cy_writel(&buf_ctrl->rx_get, new_rx_get);
1da177e4 1027 }
1da177e4
LT		 1028}
1029
f0eefdc3 1030static void cyz_handle_tx(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1031{
f0eefdc3 1032 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
875b206b 1033 struct cyclades_card *cinfo = info->card;
65f76a82
JS		 1034 u8 data;
1035 unsigned int char_count;
1da177e4 1036#ifdef BLOCKMOVE
02f1175c 1037 int small_count;
1da177e4 1038#endif
ad39c300 1039 __u32 tx_put, tx_get, tx_bufsize, tx_bufaddr;
1da177e4 1040
02f1175c
JS		 1041 if (info->xmit_cnt <= 0) /* Nothing to transmit */
1042 return;
1da177e4 1043
db05c3b1
JS		 1044 tx_get = readl(&buf_ctrl->tx_get);
1045 tx_put = readl(&buf_ctrl->tx_put);
1046 tx_bufsize = readl(&buf_ctrl->tx_bufsize);
1047 tx_bufaddr = readl(&buf_ctrl->tx_bufaddr);
02f1175c
JS		 1048 if (tx_put >= tx_get)
1049 char_count = tx_get - tx_put - 1 + tx_bufsize;
1050 else
1051 char_count = tx_get - tx_put - 1;
1da177e4 1052
02f1175c 1053 if (char_count) {
1da177e4 1054
f7429034 1055 if (tty == NULL)
02f1175c 1056 goto ztxdone;
1da177e4 1057
02f1175c
JS		 1058 if (info->x_char) { /* send special char */
1059 data = info->x_char;
1da177e4 1060
02f1175c
JS		 1061 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1062 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1063 info->x_char = 0;
1064 char_count--;
1065 info->icount.tx++;
02f1175c 1066 }
1da177e4 1067#ifdef BLOCKMOVE
02f1175c
JS		 1068 while (0 < (small_count = min_t(unsigned int,
1069 tx_bufsize - tx_put, min_t(unsigned int,
1070 (SERIAL_XMIT_SIZE - info->xmit_tail),
1071 min_t(unsigned int, info->xmit_cnt,
1072 char_count))))) {
1073
1074 memcpy_toio((char *)(cinfo->base_addr + tx_bufaddr +
1075 tx_put),
77451e53 1076 &info->port.xmit_buf[info->xmit_tail],
02f1175c
JS		 1077 small_count);
1078
1079 tx_put = (tx_put + small_count) & (tx_bufsize - 1);
1080 char_count -= small_count;
1081 info->icount.tx += small_count;
1082 info->xmit_cnt -= small_count;
1083 info->xmit_tail = (info->xmit_tail + small_count) &
1084 (SERIAL_XMIT_SIZE - 1);
02f1175c 1085 }
1da177e4 1086#else
02f1175c 1087 while (info->xmit_cnt && char_count) {
77451e53 1088 data = info->port.xmit_buf[info->xmit_tail];
02f1175c
JS		 1089 info->xmit_cnt--;
1090 info->xmit_tail = (info->xmit_tail + 1) &
1091 (SERIAL_XMIT_SIZE - 1);
1092
1093 cy_writeb(cinfo->base_addr + tx_bufaddr + tx_put, data);
1094 tx_put = (tx_put + 1) & (tx_bufsize - 1);
1095 char_count--;
1096 info->icount.tx++;
02f1175c 1097 }
1da177e4 1098#endif
ebafeeff 1099 tty_wakeup(tty);
7fa57a0c 1100ztxdone:
02f1175c
JS		 1101 /* Update tx_put */
1102 cy_writel(&buf_ctrl->tx_put, tx_put);
1da177e4 1103 }
1da177e4
LT		 1104}
1105
02f1175c 1106static void cyz_handle_cmd(struct cyclades_card *cinfo)
1da177e4 1107{
f0eefdc3 1108 struct BOARD_CTRL __iomem *board_ctrl = cinfo->board_ctrl;
02f1175c
JS		 1109 struct tty_struct *tty;
1110 struct cyclades_port *info;
101b8159 1111 __u32 channel, param, fw_ver;
1a86b5e3 1112 __u8 cmd;
02f1175c
JS		 1113 int special_count;
1114 int delta_count;
1115
db05c3b1 1116 fw_ver = readl(&board_ctrl->fw_version);
02f1175c
JS		 1117
1118 while (cyz_fetch_msg(cinfo, &channel, &cmd, &param) == 1) {
1119 special_count = 0;
1120 delta_count = 0;
dd025c0c 1121 info = &cinfo->ports[channel];
d13549f8 1122 tty = tty_port_tty_get(&info->port);
15ed6cc0 1123 if (tty == NULL)
02f1175c 1124 continue;
f7429034 1125
02f1175c
JS		 1126 switch (cmd) {
1127 case C_CM_PR_ERROR:
1128 tty_insert_flip_char(tty, 0, TTY_PARITY);
1129 info->icount.rx++;
1130 special_count++;
1131 break;
1132 case C_CM_FR_ERROR:
1133 tty_insert_flip_char(tty, 0, TTY_FRAME);
1134 info->icount.rx++;
1135 special_count++;
1136 break;
1137 case C_CM_RXBRK:
1138 tty_insert_flip_char(tty, 0, TTY_BREAK);
1139 info->icount.rx++;
1140 special_count++;
1141 break;
1142 case C_CM_MDCD:
1143 info->icount.dcd++;
1144 delta_count++;
77451e53 1145 if (info->port.flags & ASYNC_CHECK_CD) {
f0eefdc3
JS		 1146 u32 dcd = fw_ver > 241 ? param :
1147 readl(&info->u.cyz.ch_ctrl->rs_status);
174e6fe0 1148 if (dcd & C_RS_DCD)
77451e53 1149 wake_up_interruptible(&info->port.open_wait);
174e6fe0 1150 else
d13549f8 1151 tty_hangup(tty);
02f1175c
JS		 1152 }
1153 break;
1154 case C_CM_MCTS:
1155 info->icount.cts++;
1156 delta_count++;
1157 break;
1158 case C_CM_MRI:
1159 info->icount.rng++;
1160 delta_count++;
1161 break;
1162 case C_CM_MDSR:
1163 info->icount.dsr++;
1164 delta_count++;
1165 break;
1da177e4 1166#ifdef Z_WAKE
02f1175c 1167 case C_CM_IOCTLW:
ebafeeff 1168 complete(&info->shutdown_wait);
02f1175c 1169 break;
1da177e4
LT		 1170#endif
1171#ifdef CONFIG_CYZ_INTR
02f1175c
JS		 1172 case C_CM_RXHIWM:
1173 case C_CM_RXNNDT:
1174 case C_CM_INTBACK2:
1175 /* Reception Interrupt */
1da177e4 1176#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1177 printk(KERN_DEBUG "cyz_interrupt: rcvd intr, card %d, "
1178 "port %ld\n", info->card, channel);
1da177e4 1179#endif
f0eefdc3 1180 cyz_handle_rx(info, tty);
02f1175c
JS		 1181 break;
1182 case C_CM_TXBEMPTY:
1183 case C_CM_TXLOWWM:
1184 case C_CM_INTBACK:
1185 /* Transmission Interrupt */
1da177e4 1186#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1187 printk(KERN_DEBUG "cyz_interrupt: xmit intr, card %d, "
1188 "port %ld\n", info->card, channel);
1da177e4 1189#endif
f0eefdc3 1190 cyz_handle_tx(info, tty);
02f1175c
JS		 1191 break;
1192#endif /* CONFIG_CYZ_INTR */
1193 case C_CM_FATAL:
1194 /* should do something with this !!! */
1195 break;
1196 default:
1197 break;
1198 }
1199 if (delta_count)
ebafeeff 1200 wake_up_interruptible(&info->delta_msr_wait);
02f1175c
JS		 1201 if (special_count)
1202 tty_schedule_flip(tty);
d13549f8 1203 tty_kref_put(tty);
1da177e4 1204 }
1da177e4
LT		 1205}
1206
1207#ifdef CONFIG_CYZ_INTR
02f1175c 1208static irqreturn_t cyz_interrupt(int irq, void *dev_id)
1da177e4 1209{
f7429034 1210 struct cyclades_card *cinfo = dev_id;
1da177e4 1211
2693f485 1212 if (unlikely(!cyz_is_loaded(cinfo))) {
1da177e4 1213#ifdef CY_DEBUG_INTERRUPTS
21719191
JS		 1214 printk(KERN_DEBUG "cyz_interrupt: board not yet loaded "
1215 "(IRQ%d).\n", irq);
1da177e4 1216#endif
02f1175c
JS		 1217 return IRQ_NONE;
1218 }
1da177e4 1219
02f1175c
JS		 1220 /* Handle the interrupts */
1221 cyz_handle_cmd(cinfo);
1da177e4 1222
02f1175c
JS		 1223 return IRQ_HANDLED;
1224} /* cyz_interrupt */
1da177e4 1225
02f1175c 1226static void cyz_rx_restart(unsigned long arg)
1da177e4 1227{
02f1175c 1228 struct cyclades_port *info = (struct cyclades_port *)arg;
875b206b 1229 struct cyclades_card *card = info->card;
02f1175c 1230 int retval;
875b206b 1231 __u32 channel = info->line - card->first_line;
02f1175c
JS		 1232 unsigned long flags;
1233
9fa1b3b1 1234 spin_lock_irqsave(&card->card_lock, flags);
875b206b 1235 retval = cyz_issue_cmd(card, channel, C_CM_INTBACK2, 0L);
02f1175c 1236 if (retval != 0) {
21719191 1237 printk(KERN_ERR "cyc:cyz_rx_restart retval on ttyC%d was %x\n",
02f1175c
JS		 1238 info->line, retval);
1239 }
9fa1b3b1 1240 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4
LT		 1241}
1242
02f1175c 1243#else /* CONFIG_CYZ_INTR */
1da177e4 1244
02f1175c 1245static void cyz_poll(unsigned long arg)
1da177e4 1246{
02f1175c
JS		 1247 struct cyclades_card *cinfo;
1248 struct cyclades_port *info;
b7050906 1249 unsigned long expires = jiffies + HZ;
65f76a82 1250 unsigned int port, card;
1da177e4 1251
02f1175c
JS		 1252 for (card = 0; card < NR_CARDS; card++) {
1253 cinfo = &cy_card[card];
1254
2693f485 1255 if (!cy_is_Z(cinfo))
02f1175c 1256 continue;
2693f485 1257 if (!cyz_is_loaded(cinfo))
02f1175c
JS		 1258 continue;
1259
1da177e4 1260 /* Skip first polling cycle to avoid racing conditions with the FW */
02f1175c 1261 if (!cinfo->intr_enabled) {
02f1175c
JS		 1262 cinfo->intr_enabled = 1;
1263 continue;
1264 }
1da177e4 1265
02f1175c 1266 cyz_handle_cmd(cinfo);
1da177e4 1267
02f1175c 1268 for (port = 0; port < cinfo->nports; port++) {
d13549f8
JS		 1269 struct tty_struct *tty;
1270
dd025c0c 1271 info = &cinfo->ports[port];
d13549f8
JS		 1272 tty = tty_port_tty_get(&info->port);
1273 /* OK to pass NULL to the handle functions below.
1274 They need to drop the data in that case. */
1275
02f1175c 1276 if (!info->throttle)
f0eefdc3
JS		 1277 cyz_handle_rx(info, tty);
1278 cyz_handle_tx(info, tty);
d13549f8 1279 tty_kref_put(tty);
02f1175c
JS		 1280 }
1281 /* poll every 'cyz_polling_cycle' period */
b7050906 1282 expires = jiffies + cyz_polling_cycle;
1da177e4 1283 }
b7050906 1284 mod_timer(&cyz_timerlist, expires);
02f1175c 1285} /* cyz_poll */
1da177e4 1286
02f1175c 1287#endif /* CONFIG_CYZ_INTR */
1da177e4
LT		 1288
1289/********** End of block of Cyclades-Z specific code *********/
1290/***********************************************************/
1291
1da177e4
LT		 1292/* This is called whenever a port becomes active;
1293 interrupts are enabled and DTR & RTS are turned on.
1294 */
d13549f8 1295static int cy_startup(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1296{
875b206b 1297 struct cyclades_card *card;
02f1175c
JS		 1298 unsigned long flags;
1299 int retval = 0;
cc7fdf49 1300 int channel;
02f1175c 1301 unsigned long page;
1da177e4 1302
02f1175c 1303 card = info->card;
875b206b 1304 channel = info->line - card->first_line;
1da177e4 1305
02f1175c
JS		 1306 page = get_zeroed_page(GFP_KERNEL);
1307 if (!page)
1308 return -ENOMEM;
1da177e4 1309
9fa1b3b1 1310 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1311
cc7fdf49 1312 if (info->port.flags & ASYNC_INITIALIZED)
02f1175c 1313 goto errout;
1da177e4 1314
02f1175c 1315 if (!info->type) {
d13549f8 1316 set_bit(TTY_IO_ERROR, &tty->flags);
02f1175c
JS		 1317 goto errout;
1318 }
1da177e4 1319
77451e53 1320 if (info->port.xmit_buf)
02f1175c
JS		 1321 free_page(page);
1322 else
77451e53 1323 info->port.xmit_buf = (unsigned char *)page;
1da177e4 1324
9fa1b3b1 1325 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4 1326
d13549f8 1327 cy_set_line_char(info, tty);
1da177e4 1328
2693f485 1329 if (!cy_is_Z(card)) {
02f1175c 1330 channel &= 0x03;
1da177e4 1331
9fa1b3b1 1332 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1333
3aeea5b9 1334 cyy_writeb(info, CyCAR, channel);
1da177e4 1335
3aeea5b9 1336 cyy_writeb(info, CyRTPR,
02f1175c
JS		 1337 (info->default_timeout ? info->default_timeout : 0x02));
1338 /* 10ms rx timeout */
1da177e4 1339
3aeea5b9 1340 cyy_issue_cmd(info, CyCHAN_CTL | CyENB_RCVR | CyENB_XMTR);
1da177e4 1341
4d768200 1342 cyy_change_rts_dtr(info, TIOCM_RTS | TIOCM_DTR, 0);
1da177e4 1343
3aeea5b9 1344 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyRxData);
02f1175c 1345 } else {
f0eefdc3 1346 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
1da177e4 1347
2693f485 1348 if (!cyz_is_loaded(card))
02f1175c 1349 return -ENODEV;
1da177e4 1350
1da177e4 1351#ifdef CY_DEBUG_OPEN
21719191 1352 printk(KERN_DEBUG "cyc startup Z card %d, channel %d, "
f0eefdc3 1353 "base_addr %p\n", card, channel, card->base_addr);
1da177e4 1354#endif
9fa1b3b1 1355 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1356
f0eefdc3 1357 cy_writel(&ch_ctrl->op_mode, C_CH_ENABLE);
1da177e4
LT		 1358#ifdef Z_WAKE
1359#ifdef CONFIG_CYZ_INTR
f0eefdc3 1360 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1361 C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
1362 C_IN_RXNNDT | C_IN_IOCTLW | C_IN_MDCD);
1da177e4 1363#else
f0eefdc3 1364 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1365 C_IN_IOCTLW | C_IN_MDCD);
1366#endif /* CONFIG_CYZ_INTR */
1da177e4
LT		 1367#else
1368#ifdef CONFIG_CYZ_INTR
f0eefdc3 1369 cy_writel(&ch_ctrl->intr_enable,
02f1175c
JS		 1370 C_IN_TXBEMPTY | C_IN_TXLOWWM | C_IN_RXHIWM |
1371 C_IN_RXNNDT | C_IN_MDCD);
1da177e4 1372#else
f0eefdc3 1373 cy_writel(&ch_ctrl->intr_enable, C_IN_MDCD);
02f1175c
JS		 1374#endif /* CONFIG_CYZ_INTR */
1375#endif /* Z_WAKE */
1376
875b206b 1377 retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
02f1175c 1378 if (retval != 0) {
21719191
JS		 1379 printk(KERN_ERR "cyc:startup(1) retval on ttyC%d was "
1380 "%x\n", info->line, retval);
02f1175c 1381 }
1da177e4 1382
02f1175c 1383 /* Flush RX buffers before raising DTR and RTS */
875b206b 1384 retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_RX, 0L);
02f1175c 1385 if (retval != 0) {
21719191
JS		 1386 printk(KERN_ERR "cyc:startup(2) retval on ttyC%d was "
1387 "%x\n", info->line, retval);
02f1175c 1388 }
1da177e4 1389
02f1175c
JS		 1390 /* set timeout !!! */
1391 /* set RTS and DTR !!! */
4d768200 1392 tty_port_raise_dtr_rts(&info->port);
1da177e4 1393
02f1175c 1394 /* enable send, recv, modem !!! */
cc7fdf49 1395 }
02f1175c 1396
cc7fdf49 1397 info->port.flags |= ASYNC_INITIALIZED;
1da177e4 1398
cc7fdf49
JS		 1399 clear_bit(TTY_IO_ERROR, &tty->flags);
1400 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1401 info->breakon = info->breakoff = 0;
1402 memset((char *)&info->idle_stats, 0, sizeof(info->idle_stats));
1403 info->idle_stats.in_use =
1404 info->idle_stats.recv_idle =
1405 info->idle_stats.xmit_idle = jiffies;
1406
1407 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4
LT		 1408
1409#ifdef CY_DEBUG_OPEN
21719191 1410 printk(KERN_DEBUG "cyc startup done\n");
1da177e4
LT		 1411#endif
1412 return 0;
1413
1414errout:
9fa1b3b1 1415 spin_unlock_irqrestore(&card->card_lock, flags);
cc7fdf49 1416 free_page(page);
1da177e4 1417 return retval;
02f1175c 1418} /* startup */
1da177e4 1419
02f1175c 1420static void start_xmit(struct cyclades_port *info)
1da177e4 1421{
3aeea5b9 1422 struct cyclades_card *card = info->card;
02f1175c 1423 unsigned long flags;
3aeea5b9 1424 int channel = info->line - card->first_line;
1da177e4 1425
2693f485 1426 if (!cy_is_Z(card)) {
9fa1b3b1 1427 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 1428 cyy_writeb(info, CyCAR, channel & 0x03);
1429 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
9fa1b3b1 1430 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1431 } else {
1da177e4 1432#ifdef CONFIG_CYZ_INTR
02f1175c 1433 int retval;
1da177e4 1434
9fa1b3b1 1435 spin_lock_irqsave(&card->card_lock, flags);
875b206b 1436 retval = cyz_issue_cmd(card, channel, C_CM_INTBACK, 0L);
02f1175c 1437 if (retval != 0) {
21719191
JS		 1438 printk(KERN_ERR "cyc:start_xmit retval on ttyC%d was "
1439 "%x\n", info->line, retval);
02f1175c 1440 }
9fa1b3b1 1441 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 1442#else /* CONFIG_CYZ_INTR */
1443 /* Don't have to do anything at this time */
1444#endif /* CONFIG_CYZ_INTR */
1445 }
1446} /* start_xmit */
1da177e4
LT		 1447
1448/*
1449 * This routine shuts down a serial port; interrupts are disabled,
1450 * and DTR is dropped if the hangup on close termio flag is on.
1451 */
d13549f8 1452static void cy_shutdown(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 1453{
875b206b 1454 struct cyclades_card *card;
02f1175c 1455 unsigned long flags;
3aeea5b9 1456 int channel;
02f1175c 1457
77451e53 1458 if (!(info->port.flags & ASYNC_INITIALIZED))
02f1175c 1459 return;
02f1175c
JS		 1460
1461 card = info->card;
875b206b 1462 channel = info->line - card->first_line;
2693f485 1463 if (!cy_is_Z(card)) {
9fa1b3b1 1464 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 1465
1466 /* Clear delta_msr_wait queue to avoid mem leaks. */
1467 wake_up_interruptible(&info->delta_msr_wait);
1da177e4 1468
77451e53 1469 if (info->port.xmit_buf) {
02f1175c 1470 unsigned char *temp;
77451e53
AC		 1471 temp = info->port.xmit_buf;
1472 info->port.xmit_buf = NULL;
02f1175c
JS		 1473 free_page((unsigned long)temp);
1474 }
4d768200
JS		 1475 if (tty->termios->c_cflag & HUPCL)
1476 cyy_change_rts_dtr(info, 0, TIOCM_RTS | TIOCM_DTR);
1477
3aeea5b9 1478 cyy_issue_cmd(info, CyCHAN_CTL | CyDIS_RCVR);
02f1175c
JS		 1479 /* it may be appropriate to clear _XMIT at
1480 some later date (after testing)!!! */
1481
d13549f8 1482 set_bit(TTY_IO_ERROR, &tty->flags);
77451e53 1483 info->port.flags &= ~ASYNC_INITIALIZED;
9fa1b3b1 1484 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1485 } else {
1da177e4 1486#ifdef CY_DEBUG_OPEN
21719191 1487 printk(KERN_DEBUG "cyc shutdown Z card %d, channel %d, "
f0eefdc3 1488 "base_addr %p\n", card, channel, card->base_addr);
1da177e4
LT		 1489#endif
1490
2693f485 1491 if (!cyz_is_loaded(card))
02f1175c 1492 return;
1da177e4 1493
9fa1b3b1 1494 spin_lock_irqsave(&card->card_lock, flags);
1da177e4 1495
77451e53 1496 if (info->port.xmit_buf) {
02f1175c 1497 unsigned char *temp;
77451e53
AC		 1498 temp = info->port.xmit_buf;
1499 info->port.xmit_buf = NULL;
02f1175c 1500 free_page((unsigned long)temp);
1da177e4 1501 }
02f1175c 1502
4d768200
JS		 1503 if (tty->termios->c_cflag & HUPCL)
1504 tty_port_lower_dtr_rts(&info->port);
1da177e4 1505
d13549f8 1506 set_bit(TTY_IO_ERROR, &tty->flags);
77451e53 1507 info->port.flags &= ~ASYNC_INITIALIZED;
02f1175c 1508
9fa1b3b1 1509 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1510 }
1da177e4
LT		 1511
1512#ifdef CY_DEBUG_OPEN
21719191 1513 printk(KERN_DEBUG "cyc shutdown done\n");
1da177e4 1514#endif
02f1175c 1515} /* shutdown */
1da177e4
LT		 1516
1517/*
1518 * ------------------------------------------------------------
1519 * cy_open() and friends
1520 * ------------------------------------------------------------
1521 */
1522
1da177e4
LT		 1523/*
1524 * This routine is called whenever a serial port is opened. It
1525 * performs the serial-specific initialization for the tty structure.
1526 */
02f1175c 1527static int cy_open(struct tty_struct *tty, struct file *filp)
1da177e4 1528{
02f1175c 1529 struct cyclades_port *info;
65f76a82
JS		 1530 unsigned int i, line;
1531 int retval;
1da177e4 1532
02f1175c 1533 line = tty->index;
15ed6cc0 1534 if (tty->index < 0 || NR_PORTS <= line)
02f1175c 1535 return -ENODEV;
15ed6cc0 1536
dd025c0c
JS		 1537 for (i = 0; i < NR_CARDS; i++)
1538 if (line < cy_card[i].first_line + cy_card[i].nports &&
1539 line >= cy_card[i].first_line)
1540 break;
1541 if (i >= NR_CARDS)
1542 return -ENODEV;
1543 info = &cy_card[i].ports[line - cy_card[i].first_line];
15ed6cc0 1544 if (info->line < 0)
02f1175c 1545 return -ENODEV;
1da177e4 1546
02f1175c
JS		 1547 /* If the card's firmware hasn't been loaded,
1548 treat it as absent from the system. This
1549 will make the user pay attention.
1550 */
2693f485 1551 if (cy_is_Z(info->card)) {
875b206b 1552 struct cyclades_card *cinfo = info->card;
02f1175c
JS		 1553 struct FIRM_ID __iomem *firm_id = cinfo->base_addr + ID_ADDRESS;
1554
2693f485
JS		 1555 if (!cyz_is_loaded(cinfo)) {
1556 if (cinfo->hw_ver == ZE_V1 && cyz_fpga_loaded(cinfo) &&
101b8159
JS		 1557 readl(&firm_id->signature) ==
1558 ZFIRM_HLT) {
21719191
JS		 1559 printk(KERN_ERR "cyc:Cyclades-Z Error: you "
1560 "need an external power supply for "
1561 "this number of ports.\nFirmware "
1562 "halted.\n");
02f1175c 1563 } else {
21719191
JS		 1564 printk(KERN_ERR "cyc:Cyclades-Z firmware not "
1565 "yet loaded\n");
02f1175c
JS		 1566 }
1567 return -ENODEV;
1568 }
1569#ifdef CONFIG_CYZ_INTR
1570 else {
1571 /* In case this Z board is operating in interrupt mode, its
1572 interrupts should be enabled as soon as the first open
1573 happens to one of its ports. */
1574 if (!cinfo->intr_enabled) {
97e87f8e 1575 u16 intr;
02f1175c 1576
02f1175c 1577 /* Enable interrupts on the PLX chip */
97e87f8e
JS		 1578 intr = readw(&cinfo->ctl_addr.p9060->
1579 intr_ctrl_stat) | 0x0900;
1580 cy_writew(&cinfo->ctl_addr.p9060->
1581 intr_ctrl_stat, intr);
02f1175c
JS		 1582 /* Enable interrupts on the FW */
1583 retval = cyz_issue_cmd(cinfo, 0,
1584 C_CM_IRQ_ENBL, 0L);
1585 if (retval != 0) {
21719191
JS		 1586 printk(KERN_ERR "cyc:IRQ enable retval "
1587 "was %x\n", retval);
02f1175c 1588 }
02f1175c
JS		 1589 cinfo->intr_enabled = 1;
1590 }
1da177e4 1591 }
02f1175c
JS		 1592#endif /* CONFIG_CYZ_INTR */
1593 /* Make sure this Z port really exists in hardware */
1594 if (info->line > (cinfo->first_line + cinfo->nports - 1))
1595 return -ENODEV;
1da177e4 1596 }
1da177e4 1597#ifdef CY_DEBUG_OTHER
21719191 1598 printk(KERN_DEBUG "cyc:cy_open ttyC%d\n", info->line);
1da177e4 1599#endif
02f1175c 1600 tty->driver_data = info;
15ed6cc0 1601 if (serial_paranoia_check(info, tty->name, "cy_open"))
02f1175c 1602 return -ENODEV;
15ed6cc0 1603
1da177e4 1604#ifdef CY_DEBUG_OPEN
21719191 1605 printk(KERN_DEBUG "cyc:cy_open ttyC%d, count = %d\n", info->line,
77451e53 1606 info->port.count);
1da177e4 1607#endif
77451e53 1608 info->port.count++;
1da177e4 1609#ifdef CY_DEBUG_COUNT
21719191 1610 printk(KERN_DEBUG "cyc:cy_open (%d): incrementing count to %d\n",
77451e53 1611 current->pid, info->port.count);
1da177e4 1612#endif
1da177e4 1613
02f1175c
JS		 1614 /*
1615 * If the port is the middle of closing, bail out now
1616 */
77451e53
AC		 1617 if (tty_hung_up_p(filp) || (info->port.flags & ASYNC_CLOSING)) {
1618 wait_event_interruptible(info->port.close_wait,
1619 !(info->port.flags & ASYNC_CLOSING));
1620 return (info->port.flags & ASYNC_HUP_NOTIFY) ? -EAGAIN: -ERESTARTSYS;
02f1175c 1621 }
1da177e4 1622
02f1175c
JS		 1623 /*
1624 * Start up serial port
1625 */
d13549f8 1626 retval = cy_startup(info, tty);
15ed6cc0 1627 if (retval)
02f1175c 1628 return retval;
1da177e4 1629
f0737579 1630 retval = tty_port_block_til_ready(&info->port, tty, filp);
02f1175c 1631 if (retval) {
1da177e4 1632#ifdef CY_DEBUG_OPEN
21719191
JS		 1633 printk(KERN_DEBUG "cyc:cy_open returning after block_til_ready "
1634 "with %d\n", retval);
1da177e4 1635#endif
02f1175c
JS		 1636 return retval;
1637 }
1da177e4 1638
02f1175c 1639 info->throttle = 0;
d13549f8 1640 tty_port_tty_set(&info->port, tty);
1da177e4 1641
02f1175c 1642#ifdef CY_DEBUG_OPEN
21719191 1643 printk(KERN_DEBUG "cyc:cy_open done\n");
02f1175c
JS		 1644#endif
1645 return 0;
1646} /* cy_open */
1da177e4
LT		 1647
1648/*
1649 * cy_wait_until_sent() --- wait until the transmitter is empty
1650 */
02f1175c 1651static void cy_wait_until_sent(struct tty_struct *tty, int timeout)
1da177e4 1652{
875b206b 1653 struct cyclades_card *card;
cab9bdd1 1654 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1655 unsigned long orig_jiffies;
1656 int char_time;
1657
1658 if (serial_paranoia_check(info, tty->name, "cy_wait_until_sent"))
1659 return;
1660
1661 if (info->xmit_fifo_size == 0)
1662 return; /* Just in case.... */
1da177e4 1663
02f1175c 1664 orig_jiffies = jiffies;
978e595f 1665 lock_kernel();
02f1175c
JS		 1666 /*
1667 * Set the check interval to be 1/5 of the estimated time to
1668 * send a single character, and make it at least 1. The check
1669 * interval should also be less than the timeout.
1670 *
1671 * Note: we have to use pretty tight timings here to satisfy
1672 * the NIST-PCTS.
1673 */
1674 char_time = (info->timeout - HZ / 50) / info->xmit_fifo_size;
1675 char_time = char_time / 5;
1676 if (char_time <= 0)
1677 char_time = 1;
1678 if (timeout < 0)
1679 timeout = 0;
1680 if (timeout)
1681 char_time = min(char_time, timeout);
1682 /*
1683 * If the transmitter hasn't cleared in twice the approximate
1684 * amount of time to send the entire FIFO, it probably won't
1685 * ever clear. This assumes the UART isn't doing flow
1686 * control, which is currently the case. Hence, if it ever
1687 * takes longer than info->timeout, this is probably due to a
1688 * UART bug of some kind. So, we clamp the timeout parameter at
1689 * 2*info->timeout.
1690 */
1691 if (!timeout || timeout > 2 * info->timeout)
1692 timeout = 2 * info->timeout;
1da177e4 1693#ifdef CY_DEBUG_WAIT_UNTIL_SENT
21719191
JS		 1694 printk(KERN_DEBUG "In cy_wait_until_sent(%d) check=%d, jiff=%lu...",
1695 timeout, char_time, jiffies);
1da177e4 1696#endif
02f1175c 1697 card = info->card;
2693f485 1698 if (!cy_is_Z(card)) {
3aeea5b9 1699 while (cyy_readb(info, CySRER) & CyTxRdy) {
1da177e4 1700#ifdef CY_DEBUG_WAIT_UNTIL_SENT
21719191 1701 printk(KERN_DEBUG "Not clean (jiff=%lu)...", jiffies);
1da177e4 1702#endif
02f1175c
JS		 1703 if (msleep_interruptible(jiffies_to_msecs(char_time)))
1704 break;
1705 if (timeout && time_after(jiffies, orig_jiffies +
1706 timeout))
1707 break;
1708 }
1da177e4 1709 }
02f1175c
JS		 1710 /* Run one more char cycle */
1711 msleep_interruptible(jiffies_to_msecs(char_time * 5));
978e595f 1712 unlock_kernel();
1da177e4 1713#ifdef CY_DEBUG_WAIT_UNTIL_SENT
21719191 1714 printk(KERN_DEBUG "Clean (jiff=%lu)...done\n", jiffies);
1da177e4
LT		 1715#endif
1716}
1717
978e595f
AC		 1718static void cy_flush_buffer(struct tty_struct *tty)
1719{
1720 struct cyclades_port *info = tty->driver_data;
1721 struct cyclades_card *card;
1722 int channel, retval;
1723 unsigned long flags;
1724
1725#ifdef CY_DEBUG_IO
1726 printk(KERN_DEBUG "cyc:cy_flush_buffer ttyC%d\n", info->line);
1727#endif
1728
1729 if (serial_paranoia_check(info, tty->name, "cy_flush_buffer"))
1730 return;
1731
1732 card = info->card;
1733 channel = info->line - card->first_line;
1734
1735 spin_lock_irqsave(&card->card_lock, flags);
1736 info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
1737 spin_unlock_irqrestore(&card->card_lock, flags);
1738
2693f485 1739 if (cy_is_Z(card)) { /* If it is a Z card, flush the on-board
978e595f
AC		 1740 buffers as well */
1741 spin_lock_irqsave(&card->card_lock, flags);
1742 retval = cyz_issue_cmd(card, channel, C_CM_FLUSH_TX, 0L);
1743 if (retval != 0) {
1744 printk(KERN_ERR "cyc: flush_buffer retval on ttyC%d "
1745 "was %x\n", info->line, retval);
1746 }
1747 spin_unlock_irqrestore(&card->card_lock, flags);
1748 }
1749 tty_wakeup(tty);
1750} /* cy_flush_buffer */
1751
1752
1da177e4
LT		 1753/*
1754 * This routine is called when a particular tty device is closed.
1755 */
02f1175c 1756static void cy_close(struct tty_struct *tty, struct file *filp)
1da177e4 1757{
cab9bdd1 1758 struct cyclades_port *info = tty->driver_data;
9fa1b3b1 1759 struct cyclades_card *card;
02f1175c 1760 unsigned long flags;
3aeea5b9 1761 int channel;
1da177e4 1762
15ed6cc0 1763 if (!info || serial_paranoia_check(info, tty->name, "cy_close"))
02f1175c 1764 return;
1da177e4 1765
9fa1b3b1
JS		 1766 card = info->card;
1767
23342262 1768 if (!tty_port_close_start(&info->port, tty, filp))
02f1175c 1769 return;
15ed6cc0 1770
3aeea5b9 1771 channel = info->line - card->first_line;
9fa1b3b1 1772 spin_lock_irqsave(&card->card_lock, flags);
02f1175c 1773
2693f485 1774 if (!cy_is_Z(card)) {
02f1175c 1775 /* Stop accepting input */
3aeea5b9
JS		 1776 cyy_writeb(info, CyCAR, channel & 0x03);
1777 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyRxData);
77451e53 1778 if (info->port.flags & ASYNC_INITIALIZED) {
15ed6cc0
AC		 1779 /* Waiting for on-board buffers to be empty before
1780 closing the port */
9fa1b3b1 1781 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 1782 cy_wait_until_sent(tty, info->timeout);
9fa1b3b1 1783 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 1784 }
1785 } else {
1786#ifdef Z_WAKE
15ed6cc0
AC		 1787 /* Waiting for on-board buffers to be empty before closing
1788 the port */
f0eefdc3 1789 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
02f1175c
JS		 1790 int retval;
1791
f0eefdc3 1792 if (readl(&ch_ctrl->flow_status) != C_FS_TXIDLE) {
9fa1b3b1 1793 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLW, 0L);
02f1175c 1794 if (retval != 0) {
21719191
JS		 1795 printk(KERN_DEBUG "cyc:cy_close retval on "
1796 "ttyC%d was %x\n", info->line, retval);
02f1175c 1797 }
9fa1b3b1 1798 spin_unlock_irqrestore(&card->card_lock, flags);
2c7fea99 1799 wait_for_completion_interruptible(&info->shutdown_wait);
9fa1b3b1 1800 spin_lock_irqsave(&card->card_lock, flags);
02f1175c 1801 }
1da177e4 1802#endif
02f1175c
JS		 1803 }
1804
9fa1b3b1 1805 spin_unlock_irqrestore(&card->card_lock, flags);
d13549f8 1806 cy_shutdown(info, tty);
978e595f 1807 cy_flush_buffer(tty);
02f1175c 1808
d13549f8 1809 tty_port_tty_set(&info->port, NULL);
1da177e4 1810
23342262 1811 tty_port_close_end(&info->port, tty);
02f1175c 1812} /* cy_close */
1da177e4
LT		 1813
1814/* This routine gets called when tty_write has put something into
1815 * the write_queue. The characters may come from user space or
1816 * kernel space.
1817 *
1818 * This routine will return the number of characters actually
1819 * accepted for writing.
1820 *
1821 * If the port is not already transmitting stuff, start it off by
1822 * enabling interrupts. The interrupt service routine will then
1823 * ensure that the characters are sent.
1824 * If the port is already active, there is no need to kick it.
1825 *
1826 */
02f1175c 1827static int cy_write(struct tty_struct *tty, const unsigned char *buf, int count)
1da177e4 1828{
cab9bdd1 1829 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1830 unsigned long flags;
1831 int c, ret = 0;
1da177e4
LT		 1832
1833#ifdef CY_DEBUG_IO
21719191 1834 printk(KERN_DEBUG "cyc:cy_write ttyC%d\n", info->line);
1da177e4
LT		 1835#endif
1836
15ed6cc0 1837 if (serial_paranoia_check(info, tty->name, "cy_write"))
02f1175c 1838 return 0;
1da177e4 1839
77451e53 1840 if (!info->port.xmit_buf)
02f1175c 1841 return 0;
1da177e4 1842
9fa1b3b1 1843 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 1844 while (1) {
1a4e2351
HH		 1845 c = min(count, (int)(SERIAL_XMIT_SIZE - info->xmit_cnt - 1));
1846 c = min(c, (int)(SERIAL_XMIT_SIZE - info->xmit_head));
02f1175c
JS		 1847
1848 if (c <= 0)
1849 break;
1850
77451e53 1851 memcpy(info->port.xmit_buf + info->xmit_head, buf, c);
02f1175c
JS		 1852 info->xmit_head = (info->xmit_head + c) &
1853 (SERIAL_XMIT_SIZE - 1);
1854 info->xmit_cnt += c;
1855 buf += c;
1856 count -= c;
1857 ret += c;
1858 }
9fa1b3b1 1859 spin_unlock_irqrestore(&info->card->card_lock, flags);
02f1175c
JS		 1860
1861 info->idle_stats.xmit_bytes += ret;
1862 info->idle_stats.xmit_idle = jiffies;
1863
15ed6cc0 1864 if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped)
02f1175c 1865 start_xmit(info);
15ed6cc0 1866
02f1175c
JS		 1867 return ret;
1868} /* cy_write */
1da177e4
LT		 1869
1870/*
1871 * This routine is called by the kernel to write a single
1872 * character to the tty device. If the kernel uses this routine,
1873 * it must call the flush_chars() routine (if defined) when it is
1874 * done stuffing characters into the driver. If there is no room
1875 * in the queue, the character is ignored.
1876 */
76b25a55 1877static int cy_put_char(struct tty_struct *tty, unsigned char ch)
1da177e4 1878{
cab9bdd1 1879 struct cyclades_port *info = tty->driver_data;
02f1175c 1880 unsigned long flags;
1da177e4
LT		 1881
1882#ifdef CY_DEBUG_IO
21719191 1883 printk(KERN_DEBUG "cyc:cy_put_char ttyC%d\n", info->line);
1da177e4
LT		 1884#endif
1885
02f1175c 1886 if (serial_paranoia_check(info, tty->name, "cy_put_char"))
76b25a55 1887 return 0;
1da177e4 1888
77451e53 1889 if (!info->port.xmit_buf)
76b25a55 1890 return 0;
1da177e4 1891
9fa1b3b1 1892 spin_lock_irqsave(&info->card->card_lock, flags);
90cc3018 1893 if (info->xmit_cnt >= (int)(SERIAL_XMIT_SIZE - 1)) {
9fa1b3b1 1894 spin_unlock_irqrestore(&info->card->card_lock, flags);
76b25a55 1895 return 0;
02f1175c 1896 }
1da177e4 1897
77451e53 1898 info->port.xmit_buf[info->xmit_head++] = ch;
02f1175c
JS		 1899 info->xmit_head &= SERIAL_XMIT_SIZE - 1;
1900 info->xmit_cnt++;
1da177e4
LT		 1901 info->idle_stats.xmit_bytes++;
1902 info->idle_stats.xmit_idle = jiffies;
9fa1b3b1 1903 spin_unlock_irqrestore(&info->card->card_lock, flags);
76b25a55 1904 return 1;
02f1175c 1905} /* cy_put_char */
1da177e4
LT		 1906
1907/*
1908 * This routine is called by the kernel after it has written a
15ed6cc0 1909 * series of characters to the tty device using put_char().
1da177e4 1910 */
02f1175c 1911static void cy_flush_chars(struct tty_struct *tty)
1da177e4 1912{
cab9bdd1 1913 struct cyclades_port *info = tty->driver_data;
02f1175c 1914
1da177e4 1915#ifdef CY_DEBUG_IO
21719191 1916 printk(KERN_DEBUG "cyc:cy_flush_chars ttyC%d\n", info->line);
1da177e4
LT		 1917#endif
1918
02f1175c
JS		 1919 if (serial_paranoia_check(info, tty->name, "cy_flush_chars"))
1920 return;
1da177e4 1921
02f1175c 1922 if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
77451e53 1923 !info->port.xmit_buf)
02f1175c 1924 return;
1da177e4 1925
02f1175c
JS		 1926 start_xmit(info);
1927} /* cy_flush_chars */
1da177e4
LT		 1928
1929/*
1930 * This routine returns the numbers of characters the tty driver
1931 * will accept for queuing to be written. This number is subject
1932 * to change as output buffers get emptied, or if the output flow
1933 * control is activated.
1934 */
02f1175c 1935static int cy_write_room(struct tty_struct *tty)
1da177e4 1936{
cab9bdd1 1937 struct cyclades_port *info = tty->driver_data;
02f1175c
JS		 1938 int ret;
1939
1da177e4 1940#ifdef CY_DEBUG_IO
21719191 1941 printk(KERN_DEBUG "cyc:cy_write_room ttyC%d\n", info->line);
1da177e4
LT		 1942#endif
1943
02f1175c
JS		 1944 if (serial_paranoia_check(info, tty->name, "cy_write_room"))
1945 return 0;
1946 ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
1947 if (ret < 0)
1948 ret = 0;
1949 return ret;
1950} /* cy_write_room */
1da177e4 1951
02f1175c 1952static int cy_chars_in_buffer(struct tty_struct *tty)
1da177e4 1953{
cab9bdd1 1954 struct cyclades_port *info = tty->driver_data;
1da177e4 1955
02f1175c
JS		 1956 if (serial_paranoia_check(info, tty->name, "cy_chars_in_buffer"))
1957 return 0;
1958
1da177e4 1959#ifdef Z_EXT_CHARS_IN_BUFFER
f0eefdc3 1960 if (!cy_is_Z(info->card)) {
02f1175c 1961#endif /* Z_EXT_CHARS_IN_BUFFER */
1da177e4 1962#ifdef CY_DEBUG_IO
21719191
JS		 1963 printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
1964 info->line, info->xmit_cnt);
1da177e4 1965#endif
02f1175c 1966 return info->xmit_cnt;
1da177e4 1967#ifdef Z_EXT_CHARS_IN_BUFFER
02f1175c 1968 } else {
f0eefdc3 1969 struct BUF_CTRL __iomem *buf_ctrl = info->u.cyz.buf_ctrl;
02f1175c 1970 int char_count;
ad39c300 1971 __u32 tx_put, tx_get, tx_bufsize;
02f1175c 1972
978e595f 1973 lock_kernel();
db05c3b1
JS		 1974 tx_get = readl(&buf_ctrl->tx_get);
1975 tx_put = readl(&buf_ctrl->tx_put);
1976 tx_bufsize = readl(&buf_ctrl->tx_bufsize);
02f1175c
JS		 1977 if (tx_put >= tx_get)
1978 char_count = tx_put - tx_get;
1979 else
1980 char_count = tx_put - tx_get + tx_bufsize;
1da177e4 1981#ifdef CY_DEBUG_IO
21719191
JS		 1982 printk(KERN_DEBUG "cyc:cy_chars_in_buffer ttyC%d %d\n",
1983 info->line, info->xmit_cnt + char_count);
1da177e4 1984#endif
978e595f 1985 unlock_kernel();
096dcfce 1986 return info->xmit_cnt + char_count;
02f1175c
JS		 1987 }
1988#endif /* Z_EXT_CHARS_IN_BUFFER */
1989} /* cy_chars_in_buffer */
1da177e4
LT		 1990
1991/*
1992 * ------------------------------------------------------------
1993 * cy_ioctl() and friends
1994 * ------------------------------------------------------------
1995 */
1996
1a86b5e3 1997static void cyy_baud_calc(struct cyclades_port *info, __u32 baud)
1da177e4 1998{
02f1175c 1999 int co, co_val, bpr;
1a86b5e3 2000 __u32 cy_clock = ((info->chip_rev >= CD1400_REV_J) ? 60000000 :
02f1175c 2001 25000000);
1da177e4 2002
02f1175c
JS		 2003 if (baud == 0) {
2004 info->tbpr = info->tco = info->rbpr = info->rco = 0;
2005 return;
2006 }
1da177e4 2007
02f1175c
JS		 2008 /* determine which prescaler to use */
2009 for (co = 4, co_val = 2048; co; co--, co_val >>= 2) {
2010 if (cy_clock / co_val / baud > 63)
2011 break;
2012 }
1da177e4 2013
02f1175c
JS		 2014 bpr = (cy_clock / co_val * 2 / baud + 1) / 2;
2015 if (bpr > 255)
2016 bpr = 255;
1da177e4 2017
02f1175c
JS		 2018 info->tbpr = info->rbpr = bpr;
2019 info->tco = info->rco = co;
1da177e4
LT		 2020}
2021
2022/*
2023 * This routine finds or computes the various line characteristics.
2024 * It used to be called config_setup
2025 */
d13549f8 2026static void cy_set_line_char(struct cyclades_port *info, struct tty_struct *tty)
1da177e4 2027{
875b206b 2028 struct cyclades_card *card;
02f1175c 2029 unsigned long flags;
3aeea5b9 2030 int channel;
02f1175c 2031 unsigned cflag, iflag;
02f1175c
JS		 2032 int baud, baud_rate = 0;
2033 int i;
2034
d13549f8 2035 if (!tty->termios) /* XXX can this happen at all? */
02f1175c 2036 return;
15ed6cc0
AC		 2037
2038 if (info->line == -1)
02f1175c 2039 return;
15ed6cc0 2040
d13549f8
JS		 2041 cflag = tty->termios->c_cflag;
2042 iflag = tty->termios->c_iflag;
1da177e4 2043
02f1175c
JS		 2044 /*
2045 * Set up the tty->alt_speed kludge
2046 */
d13549f8
JS		 2047 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_HI)
2048 tty->alt_speed = 57600;
2049 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_VHI)
2050 tty->alt_speed = 115200;
2051 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_SHI)
2052 tty->alt_speed = 230400;
2053 if ((info->port.flags & ASYNC_SPD_MASK) == ASYNC_SPD_WARP)
2054 tty->alt_speed = 460800;
02f1175c
JS		 2055
2056 card = info->card;
875b206b 2057 channel = info->line - card->first_line;
02f1175c 2058
2693f485 2059 if (!cy_is_Z(card)) {
02f1175c 2060 /* baud rate */
d13549f8 2061 baud = tty_get_baud_rate(tty);
77451e53 2062 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2063 ASYNC_SPD_CUST) {
2064 if (info->custom_divisor)
2065 baud_rate = info->baud / info->custom_divisor;
2066 else
2067 baud_rate = info->baud;
2068 } else if (baud > CD1400_MAX_SPEED) {
2069 baud = CD1400_MAX_SPEED;
2070 }
2071 /* find the baud index */
2072 for (i = 0; i < 20; i++) {
15ed6cc0 2073 if (baud == baud_table[i])
02f1175c 2074 break;
02f1175c 2075 }
15ed6cc0 2076 if (i == 20)
02f1175c 2077 i = 19; /* CD1400_MAX_SPEED */
02f1175c 2078
77451e53 2079 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2080 ASYNC_SPD_CUST) {
2081 cyy_baud_calc(info, baud_rate);
2082 } else {
2083 if (info->chip_rev >= CD1400_REV_J) {
2084 /* It is a CD1400 rev. J or later */
2085 info->tbpr = baud_bpr_60[i]; /* Tx BPR */
2086 info->tco = baud_co_60[i]; /* Tx CO */
2087 info->rbpr = baud_bpr_60[i]; /* Rx BPR */
2088 info->rco = baud_co_60[i]; /* Rx CO */
2089 } else {
2090 info->tbpr = baud_bpr_25[i]; /* Tx BPR */
2091 info->tco = baud_co_25[i]; /* Tx CO */
2092 info->rbpr = baud_bpr_25[i]; /* Rx BPR */
2093 info->rco = baud_co_25[i]; /* Rx CO */
2094 }
2095 }
2096 if (baud_table[i] == 134) {
2097 /* get it right for 134.5 baud */
2098 info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
2099 2;
77451e53 2100 } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2101 ASYNC_SPD_CUST) {
2102 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2103 baud_rate) + 2;
2104 } else if (baud_table[i]) {
2105 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2106 baud_table[i]) + 2;
2107 /* this needs to be propagated into the card info */
2108 } else {
2109 info->timeout = 0;
2110 }
2111 /* By tradition (is it a standard?) a baud rate of zero
2112 implies the line should be/has been closed. A bit
2113 later in this routine such a test is performed. */
2114
2115 /* byte size and parity */
2116 info->cor5 = 0;
2117 info->cor4 = 0;
2118 /* receive threshold */
2119 info->cor3 = (info->default_threshold ?
2120 info->default_threshold : baud_cor3[i]);
2121 info->cor2 = CyETC;
2122 switch (cflag & CSIZE) {
2123 case CS5:
2124 info->cor1 = Cy_5_BITS;
2125 break;
2126 case CS6:
2127 info->cor1 = Cy_6_BITS;
2128 break;
2129 case CS7:
2130 info->cor1 = Cy_7_BITS;
2131 break;
2132 case CS8:
2133 info->cor1 = Cy_8_BITS;
2134 break;
2135 }
15ed6cc0 2136 if (cflag & CSTOPB)
02f1175c 2137 info->cor1 |= Cy_2_STOP;
15ed6cc0 2138
02f1175c 2139 if (cflag & PARENB) {
15ed6cc0 2140 if (cflag & PARODD)
02f1175c 2141 info->cor1 |= CyPARITY_O;
15ed6cc0 2142 else
02f1175c 2143 info->cor1 |= CyPARITY_E;
15ed6cc0 2144 } else
02f1175c 2145 info->cor1 |= CyPARITY_NONE;
02f1175c
JS		 2146
2147 /* CTS flow control flag */
2148 if (cflag & CRTSCTS) {
77451e53 2149 info->port.flags |= ASYNC_CTS_FLOW;
02f1175c
JS		 2150 info->cor2 |= CyCtsAE;
2151 } else {
77451e53 2152 info->port.flags &= ~ASYNC_CTS_FLOW;
02f1175c
JS		 2153 info->cor2 &= ~CyCtsAE;
2154 }
2155 if (cflag & CLOCAL)
77451e53 2156 info->port.flags &= ~ASYNC_CHECK_CD;
02f1175c 2157 else
77451e53 2158 info->port.flags |= ASYNC_CHECK_CD;
1da177e4
LT		 2159
2160 /***********************************************
2161 The hardware option, CyRtsAO, presents RTS when
2162 the chip has characters to send. Since most modems
2163 use RTS as reverse (inbound) flow control, this
2164 option is not used. If inbound flow control is
2165 necessary, DTR can be programmed to provide the
2166 appropriate signals for use with a non-standard
2167 cable. Contact Marcio Saito for details.
2168 ***********************************************/
2169
02f1175c 2170 channel &= 0x03;
1da177e4 2171
9fa1b3b1 2172 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2173 cyy_writeb(info, CyCAR, channel);
02f1175c
JS		 2174
2175 /* tx and rx baud rate */
2176
3aeea5b9
JS		 2177 cyy_writeb(info, CyTCOR, info->tco);
2178 cyy_writeb(info, CyTBPR, info->tbpr);
2179 cyy_writeb(info, CyRCOR, info->rco);
2180 cyy_writeb(info, CyRBPR, info->rbpr);
02f1175c
JS		 2181
2182 /* set line characteristics according configuration */
2183
3aeea5b9
JS		 2184 cyy_writeb(info, CySCHR1, START_CHAR(tty));
2185 cyy_writeb(info, CySCHR2, STOP_CHAR(tty));
2186 cyy_writeb(info, CyCOR1, info->cor1);
2187 cyy_writeb(info, CyCOR2, info->cor2);
2188 cyy_writeb(info, CyCOR3, info->cor3);
2189 cyy_writeb(info, CyCOR4, info->cor4);
2190 cyy_writeb(info, CyCOR5, info->cor5);
02f1175c 2191
3aeea5b9
JS		 2192 cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR1ch | CyCOR2ch |
2193 CyCOR3ch);
02f1175c 2194
15ed6cc0 2195 /* !!! Is this needed? */
3aeea5b9
JS		 2196 cyy_writeb(info, CyCAR, channel);
2197 cyy_writeb(info, CyRTPR,
02f1175c
JS		 2198 (info->default_timeout ? info->default_timeout : 0x02));
2199 /* 10ms rx timeout */
2200
d13549f8 2201 if (C_CLOCAL(tty)) {
02f1175c 2202 /* without modem intr */
3aeea5b9
JS		 2203 cyy_writeb(info, CySRER,
2204 cyy_readb(info, CySRER) | CyMdmCh);
02f1175c
JS		 2205 /* act on 1->0 modem transitions */
2206 if ((cflag & CRTSCTS) && info->rflow) {
3aeea5b9 2207 cyy_writeb(info, CyMCOR1,
02f1175c
JS		 2208 (CyCTS | rflow_thr[i]));
2209 } else {
3aeea5b9 2210 cyy_writeb(info, CyMCOR1,
02f1175c
JS		 2211 CyCTS);
2212 }
2213 /* act on 0->1 modem transitions */
3aeea5b9 2214 cyy_writeb(info, CyMCOR2, CyCTS);
1da177e4 2215 } else {
02f1175c 2216 /* without modem intr */
3aeea5b9
JS		 2217 cyy_writeb(info, CySRER,
2218 cyy_readb(info, CySRER) | CyMdmCh);
02f1175c
JS		 2219 /* act on 1->0 modem transitions */
2220 if ((cflag & CRTSCTS) && info->rflow) {
3aeea5b9 2221 cyy_writeb(info, CyMCOR1,
02f1175c
JS		 2222 (CyDSR | CyCTS | CyRI | CyDCD |
2223 rflow_thr[i]));
2224 } else {
3aeea5b9
JS		 2225 cyy_writeb(info, CyMCOR1,
2226 CyDSR | CyCTS | CyRI | CyDCD);
02f1175c
JS		 2227 }
2228 /* act on 0->1 modem transitions */
3aeea5b9
JS		 2229 cyy_writeb(info, CyMCOR2,
2230 CyDSR | CyCTS | CyRI | CyDCD);
1da177e4 2231 }
02f1175c 2232
4d768200
JS		 2233 if (i == 0) /* baud rate is zero, turn off line */
2234 cyy_change_rts_dtr(info, 0, TIOCM_DTR);
2235 else
2236 cyy_change_rts_dtr(info, TIOCM_DTR, 0);
1da177e4 2237
d13549f8 2238 clear_bit(TTY_IO_ERROR, &tty->flags);
9fa1b3b1 2239 spin_unlock_irqrestore(&card->card_lock, flags);
1da177e4 2240
1da177e4 2241 } else {
f0eefdc3 2242 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
1a86b5e3 2243 __u32 sw_flow;
02f1175c 2244 int retval;
1da177e4 2245
2693f485 2246 if (!cyz_is_loaded(card))
02f1175c 2247 return;
1da177e4 2248
02f1175c 2249 /* baud rate */
d13549f8 2250 baud = tty_get_baud_rate(tty);
77451e53 2251 if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2252 ASYNC_SPD_CUST) {
2253 if (info->custom_divisor)
2254 baud_rate = info->baud / info->custom_divisor;
2255 else
2256 baud_rate = info->baud;
2257 } else if (baud > CYZ_MAX_SPEED) {
2258 baud = CYZ_MAX_SPEED;
2259 }
2260 cy_writel(&ch_ctrl->comm_baud, baud);
2261
2262 if (baud == 134) {
2263 /* get it right for 134.5 baud */
2264 info->timeout = (info->xmit_fifo_size * HZ * 30 / 269) +
2265 2;
77451e53 2266 } else if (baud == 38400 && (info->port.flags & ASYNC_SPD_MASK) ==
02f1175c
JS		 2267 ASYNC_SPD_CUST) {
2268 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2269 baud_rate) + 2;
2270 } else if (baud) {
2271 info->timeout = (info->xmit_fifo_size * HZ * 15 /
2272 baud) + 2;
2273 /* this needs to be propagated into the card info */
2274 } else {
2275 info->timeout = 0;
2276 }
1da177e4 2277
02f1175c
JS		 2278 /* byte size and parity */
2279 switch (cflag & CSIZE) {
2280 case CS5:
2281 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS5);
2282 break;
2283 case CS6:
2284 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS6);
2285 break;
2286 case CS7:
2287 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS7);
2288 break;
2289 case CS8:
2290 cy_writel(&ch_ctrl->comm_data_l, C_DL_CS8);
2291 break;
2292 }
2293 if (cflag & CSTOPB) {
2294 cy_writel(&ch_ctrl->comm_data_l,
db05c3b1 2295 readl(&ch_ctrl->comm_data_l) | C_DL_2STOP);
02f1175c
JS		 2296 } else {
2297 cy_writel(&ch_ctrl->comm_data_l,
db05c3b1 2298 readl(&ch_ctrl->comm_data_l) | C_DL_1STOP);
02f1175c
JS		 2299 }
2300 if (cflag & PARENB) {
15ed6cc0 2301 if (cflag & PARODD)
02f1175c 2302 cy_writel(&ch_ctrl->comm_parity, C_PR_ODD);
15ed6cc0 2303 else
02f1175c 2304 cy_writel(&ch_ctrl->comm_parity, C_PR_EVEN);
15ed6cc0 2305 } else
02f1175c 2306 cy_writel(&ch_ctrl->comm_parity, C_PR_NONE);
1da177e4 2307
02f1175c
JS		 2308 /* CTS flow control flag */
2309 if (cflag & CRTSCTS) {
2310 cy_writel(&ch_ctrl->hw_flow,
db05c3b1 2311 readl(&ch_ctrl->hw_flow) | C_RS_CTS | C_RS_RTS);
02f1175c 2312 } else {
db05c3b1
JS		 2313 cy_writel(&ch_ctrl->hw_flow, readl(&ch_ctrl->hw_flow) &
2314 ~(C_RS_CTS | C_RS_RTS));
02f1175c
JS		 2315 }
2316 /* As the HW flow control is done in firmware, the driver
2317 doesn't need to care about it */
77451e53 2318 info->port.flags &= ~ASYNC_CTS_FLOW;
02f1175c
JS		 2319
2320 /* XON/XOFF/XANY flow control flags */
2321 sw_flow = 0;
2322 if (iflag & IXON) {
2323 sw_flow |= C_FL_OXX;
2324 if (iflag & IXANY)
2325 sw_flow |= C_FL_OIXANY;
2326 }
2327 cy_writel(&ch_ctrl->sw_flow, sw_flow);
2328
875b206b 2329 retval = cyz_issue_cmd(card, channel, C_CM_IOCTL, 0L);
02f1175c 2330 if (retval != 0) {
21719191
JS		 2331 printk(KERN_ERR "cyc:set_line_char retval on ttyC%d "
2332 "was %x\n", info->line, retval);
02f1175c
JS		 2333 }
2334
2335 /* CD sensitivity */
15ed6cc0 2336 if (cflag & CLOCAL)
77451e53 2337 info->port.flags &= ~ASYNC_CHECK_CD;
15ed6cc0 2338 else
77451e53 2339 info->port.flags |= ASYNC_CHECK_CD;
1da177e4 2340
02f1175c
JS		 2341 if (baud == 0) { /* baud rate is zero, turn off line */
2342 cy_writel(&ch_ctrl->rs_control,
db05c3b1 2343 readl(&ch_ctrl->rs_control) & ~C_RS_DTR);
1da177e4 2344#ifdef CY_DEBUG_DTR
21719191 2345 printk(KERN_DEBUG "cyc:set_line_char dropping Z DTR\n");
1da177e4 2346#endif
02f1175c
JS		 2347 } else {
2348 cy_writel(&ch_ctrl->rs_control,
db05c3b1 2349 readl(&ch_ctrl->rs_control) | C_RS_DTR);
1da177e4 2350#ifdef CY_DEBUG_DTR
21719191 2351 printk(KERN_DEBUG "cyc:set_line_char raising Z DTR\n");
1da177e4 2352#endif
02f1175c 2353 }
1da177e4 2354
15ed6cc0 2355 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
02f1175c 2356 if (retval != 0) {
21719191
JS		 2357 printk(KERN_ERR "cyc:set_line_char(2) retval on ttyC%d "
2358 "was %x\n", info->line, retval);
02f1175c 2359 }
1da177e4 2360
d13549f8 2361 clear_bit(TTY_IO_ERROR, &tty->flags);
1da177e4 2362 }
02f1175c 2363} /* set_line_char */
1da177e4 2364
6c28181c 2365static int cy_get_serial_info(struct cyclades_port *info,
15ed6cc0 2366 struct serial_struct __user *retinfo)
1da177e4 2367{
875b206b 2368 struct cyclades_card *cinfo = info->card;
6c28181c
JS		 2369 struct serial_struct tmp = {
2370 .type = info->type,
2371 .line = info->line,
2372 .port = (info->card - cy_card) * 0x100 + info->line -
2373 cinfo->first_line,
2374 .irq = cinfo->irq,
2375 .flags = info->port.flags,
2376 .close_delay = info->port.close_delay,
2377 .closing_wait = info->port.closing_wait,
2378 .baud_base = info->baud,
2379 .custom_divisor = info->custom_divisor,
2380 .hub6 = 0, /*!!! */
2381 };
02f1175c 2382 return copy_to_user(retinfo, &tmp, sizeof(*retinfo)) ? -EFAULT : 0;
6c28181c 2383}
1da177e4
LT		 2384
2385static int
d13549f8 2386cy_set_serial_info(struct cyclades_port *info, struct tty_struct *tty,
15ed6cc0 2387 struct serial_struct __user *new_info)
1da177e4 2388{
02f1175c 2389 struct serial_struct new_serial;
02f1175c
JS		 2390
2391 if (copy_from_user(&new_serial, new_info, sizeof(new_serial)))
2392 return -EFAULT;
02f1175c
JS		 2393
2394 if (!capable(CAP_SYS_ADMIN)) {
44b7d1b3 2395 if (new_serial.close_delay != info->port.close_delay ||
02f1175c
JS		 2396 new_serial.baud_base != info->baud ||
2397 (new_serial.flags & ASYNC_FLAGS &
2398 ~ASYNC_USR_MASK) !=
77451e53 2399 (info->port.flags & ASYNC_FLAGS & ~ASYNC_USR_MASK))
02f1175c 2400 return -EPERM;
77451e53 2401 info->port.flags = (info->port.flags & ~ASYNC_USR_MASK) |
02f1175c
JS		 2402 (new_serial.flags & ASYNC_USR_MASK);
2403 info->baud = new_serial.baud_base;
2404 info->custom_divisor = new_serial.custom_divisor;
2405 goto check_and_exit;
2406 }
2407
2408 /*
2409 * OK, past this point, all the error checking has been done.
2410 * At this point, we start making changes.....
2411 */
2412
2413 info->baud = new_serial.baud_base;
2414 info->custom_divisor = new_serial.custom_divisor;
77451e53 2415 info->port.flags = (info->port.flags & ~ASYNC_FLAGS) |
02f1175c 2416 (new_serial.flags & ASYNC_FLAGS);
44b7d1b3
AC		 2417 info->port.close_delay = new_serial.close_delay * HZ / 100;
2418 info->port.closing_wait = new_serial.closing_wait * HZ / 100;
1da177e4
LT		 2419
2420check_and_exit:
77451e53 2421 if (info->port.flags & ASYNC_INITIALIZED) {
d13549f8 2422 cy_set_line_char(info, tty);
02f1175c
JS		 2423 return 0;
2424 } else {
d13549f8 2425 return cy_startup(info, tty);
02f1175c
JS		 2426 }
2427} /* set_serial_info */
1da177e4
LT		 2428
2429/*
2430 * get_lsr_info - get line status register info
2431 *
2432 * Purpose: Let user call ioctl() to get info when the UART physically
2433 * is emptied. On bus types like RS485, the transmitter must
2434 * release the bus after transmitting. This must be done when
2435 * the transmit shift register is empty, not be done when the
2436 * transmit holding register is empty. This functionality
2437 * allows an RS485 driver to be written in user space.
2438 */
15ed6cc0 2439static int get_lsr_info(struct cyclades_port *info, unsigned int __user *value)
1da177e4 2440{
3aeea5b9 2441 struct cyclades_card *card = info->card;
02f1175c
JS		 2442 unsigned int result;
2443 unsigned long flags;
3aeea5b9 2444 u8 status;
1da177e4 2445
2693f485 2446 if (!cy_is_Z(card)) {
9fa1b3b1 2447 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2448 status = cyy_readb(info, CySRER) & (CyTxRdy | CyTxMpty);
9fa1b3b1 2449 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2450 result = (status ? 0 : TIOCSER_TEMT);
2451 } else {
2452 /* Not supported yet */
2453 return -EINVAL;
2454 }
2455 return put_user(result, (unsigned long __user *)value);
1da177e4
LT		 2456}
2457
02f1175c 2458static int cy_tiocmget(struct tty_struct *tty, struct file *file)
1da177e4 2459{
cab9bdd1 2460 struct cyclades_port *info = tty->driver_data;
875b206b 2461 struct cyclades_card *card;
3aeea5b9 2462 int result;
02f1175c 2463
bf9d8929 2464 if (serial_paranoia_check(info, tty->name, __func__))
02f1175c 2465 return -ENODEV;
1da177e4 2466
02f1175c 2467 card = info->card;
0d348729
JS		 2468
2469 lock_kernel();
2693f485 2470 if (!cy_is_Z(card)) {
0d348729 2471 unsigned long flags;
3aeea5b9
JS		 2472 int channel = info->line - card->first_line;
2473 u8 status;
1da177e4 2474
9fa1b3b1 2475 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 2476 cyy_writeb(info, CyCAR, channel & 0x03);
2477 status = cyy_readb(info, CyMSVR1);
2478 status |= cyy_readb(info, CyMSVR2);
9fa1b3b1 2479 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2480
2481 if (info->rtsdtr_inv) {
2482 result = ((status & CyRTS) ? TIOCM_DTR : 0) |
2483 ((status & CyDTR) ? TIOCM_RTS : 0);
2484 } else {
2485 result = ((status & CyRTS) ? TIOCM_RTS : 0) |
2486 ((status & CyDTR) ? TIOCM_DTR : 0);
2487 }
2488 result |= ((status & CyDCD) ? TIOCM_CAR : 0) |
2489 ((status & CyRI) ? TIOCM_RNG : 0) |
2490 ((status & CyDSR) ? TIOCM_DSR : 0) |
2491 ((status & CyCTS) ? TIOCM_CTS : 0);
1da177e4 2492 } else {
0d348729
JS		 2493 u32 lstatus;
2494
2495 if (!cyz_is_loaded(card)) {
2496 result = -ENODEV;
2497 goto end;
02f1175c 2498 }
1da177e4 2499
0d348729
JS		 2500 lstatus = readl(&info->u.cyz.ch_ctrl->rs_status);
2501 result = ((lstatus & C_RS_RTS) ? TIOCM_RTS : 0) |
2502 ((lstatus & C_RS_DTR) ? TIOCM_DTR : 0) |
2503 ((lstatus & C_RS_DCD) ? TIOCM_CAR : 0) |
2504 ((lstatus & C_RS_RI) ? TIOCM_RNG : 0) |
2505 ((lstatus & C_RS_DSR) ? TIOCM_DSR : 0) |
2506 ((lstatus & C_RS_CTS) ? TIOCM_CTS : 0);
02f1175c 2507 }
0d348729 2508end:
7b130c0e 2509 unlock_kernel();
02f1175c
JS		 2510 return result;
2511} /* cy_tiomget */
1da177e4
LT		 2512
2513static int
2514cy_tiocmset(struct tty_struct *tty, struct file *file,
02f1175c 2515 unsigned int set, unsigned int clear)
1da177e4 2516{
cab9bdd1 2517 struct cyclades_port *info = tty->driver_data;
875b206b 2518 struct cyclades_card *card;
02f1175c 2519 unsigned long flags;
02f1175c 2520
bf9d8929 2521 if (serial_paranoia_check(info, tty->name, __func__))
02f1175c
JS		 2522 return -ENODEV;
2523
2524 card = info->card;
2693f485 2525 if (!cy_is_Z(card)) {
4d768200
JS		 2526 spin_lock_irqsave(&card->card_lock, flags);
2527 cyy_change_rts_dtr(info, set, clear);
2528 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2529 } else {
0d348729
JS		 2530 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
2531 int retval, channel = info->line - card->first_line;
2532 u32 rs;
2533
2534 if (!cyz_is_loaded(card))
2535 return -ENODEV;
2536
2537 spin_lock_irqsave(&card->card_lock, flags);
2538 rs = readl(&ch_ctrl->rs_control);
2539 if (set & TIOCM_RTS)
2540 rs |= C_RS_RTS;
2541 if (clear & TIOCM_RTS)
2542 rs &= ~C_RS_RTS;
2543 if (set & TIOCM_DTR) {
2544 rs |= C_RS_DTR;
1da177e4 2545#ifdef CY_DEBUG_DTR
0d348729 2546 printk(KERN_DEBUG "cyc:set_modem_info raising Z DTR\n");
1da177e4 2547#endif
0d348729
JS		 2548 }
2549 if (clear & TIOCM_DTR) {
2550 rs &= ~C_RS_DTR;
1da177e4 2551#ifdef CY_DEBUG_DTR
0d348729
JS		 2552 printk(KERN_DEBUG "cyc:set_modem_info clearing "
2553 "Z DTR\n");
1da177e4 2554#endif
02f1175c 2555 }
0d348729 2556 cy_writel(&ch_ctrl->rs_control, rs);
9fa1b3b1 2557 retval = cyz_issue_cmd(card, channel, C_CM_IOCTLM, 0L);
0d348729 2558 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2559 if (retval != 0) {
21719191
JS		 2560 printk(KERN_ERR "cyc:set_modem_info retval on ttyC%d "
2561 "was %x\n", info->line, retval);
02f1175c 2562 }
1da177e4 2563 }
02f1175c 2564 return 0;
0d348729 2565}
1da177e4
LT		 2566
2567/*
2568 * cy_break() --- routine which turns the break handling on or off
2569 */
9e98966c 2570static int cy_break(struct tty_struct *tty, int break_state)
1da177e4 2571{
cab9bdd1 2572 struct cyclades_port *info = tty->driver_data;
9fa1b3b1 2573 struct cyclades_card *card;
02f1175c 2574 unsigned long flags;
9e98966c 2575 int retval = 0;
1da177e4 2576
02f1175c 2577 if (serial_paranoia_check(info, tty->name, "cy_break"))
9e98966c 2578 return -EINVAL;
1da177e4 2579
9fa1b3b1
JS		 2580 card = info->card;
2581
2582 spin_lock_irqsave(&card->card_lock, flags);
2693f485 2583 if (!cy_is_Z(card)) {
02f1175c
JS		 2584 /* Let the transmit ISR take care of this (since it
2585 requires stuffing characters into the output stream).
2586 */
2587 if (break_state == -1) {
2588 if (!info->breakon) {
2589 info->breakon = 1;
2590 if (!info->xmit_cnt) {
9fa1b3b1 2591 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2592 start_xmit(info);
9fa1b3b1 2593 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 2594 }
2595 }
2596 } else {
2597 if (!info->breakoff) {
2598 info->breakoff = 1;
2599 if (!info->xmit_cnt) {
9fa1b3b1 2600 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c 2601 start_xmit(info);
9fa1b3b1 2602 spin_lock_irqsave(&card->card_lock, flags);
02f1175c
JS		 2603 }
2604 }
1da177e4 2605 }
1da177e4 2606 } else {
02f1175c 2607 if (break_state == -1) {
9fa1b3b1
JS		 2608 retval = cyz_issue_cmd(card,
2609 info->line - card->first_line,
02f1175c
JS		 2610 C_CM_SET_BREAK, 0L);
2611 if (retval != 0) {
21719191
JS		 2612 printk(KERN_ERR "cyc:cy_break (set) retval on "
2613 "ttyC%d was %x\n", info->line, retval);
02f1175c
JS		 2614 }
2615 } else {
9fa1b3b1
JS		 2616 retval = cyz_issue_cmd(card,
2617 info->line - card->first_line,
02f1175c
JS		 2618 C_CM_CLR_BREAK, 0L);
2619 if (retval != 0) {
21719191
JS		 2620 printk(KERN_DEBUG "cyc:cy_break (clr) retval "
2621 "on ttyC%d was %x\n", info->line,
2622 retval);
02f1175c 2623 }
1da177e4 2624 }
1da177e4 2625 }
9fa1b3b1 2626 spin_unlock_irqrestore(&card->card_lock, flags);
9e98966c 2627 return retval;
02f1175c 2628} /* cy_break */
1da177e4 2629
02f1175c 2630static int set_threshold(struct cyclades_port *info, unsigned long value)
1da177e4 2631{
3aeea5b9 2632 struct cyclades_card *card = info->card;
02f1175c 2633 unsigned long flags;
1da177e4 2634
2693f485 2635 if (!cy_is_Z(card)) {
02f1175c
JS		 2636 info->cor3 &= ~CyREC_FIFO;
2637 info->cor3 |= value & CyREC_FIFO;
1da177e4 2638
9fa1b3b1 2639 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9
JS		 2640 cyy_writeb(info, CyCOR3, info->cor3);
2641 cyy_issue_cmd(info, CyCOR_CHANGE | CyCOR3ch);
9fa1b3b1 2642 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2643 }
2644 return 0;
2645} /* set_threshold */
1da177e4 2646
15ed6cc0
AC		 2647static int get_threshold(struct cyclades_port *info,
2648 unsigned long __user *value)
1da177e4 2649{
3aeea5b9 2650 struct cyclades_card *card = info->card;
1da177e4 2651
2693f485 2652 if (!cy_is_Z(card)) {
3aeea5b9 2653 u8 tmp = cyy_readb(info, CyCOR3) & CyREC_FIFO;
02f1175c 2654 return put_user(tmp, value);
02f1175c 2655 }
f7429034 2656 return 0;
02f1175c 2657} /* get_threshold */
1da177e4 2658
02f1175c 2659static int set_timeout(struct cyclades_port *info, unsigned long value)
1da177e4 2660{
3aeea5b9 2661 struct cyclades_card *card = info->card;
02f1175c 2662 unsigned long flags;
1da177e4 2663
2693f485 2664 if (!cy_is_Z(card)) {
9fa1b3b1 2665 spin_lock_irqsave(&card->card_lock, flags);
3aeea5b9 2666 cyy_writeb(info, CyRTPR, value & 0xff);
9fa1b3b1 2667 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2668 }
2669 return 0;
2670} /* set_timeout */
1da177e4 2671
15ed6cc0
AC		 2672static int get_timeout(struct cyclades_port *info,
2673 unsigned long __user *value)
1da177e4 2674{
3aeea5b9 2675 struct cyclades_card *card = info->card;
1da177e4 2676
2693f485 2677 if (!cy_is_Z(card)) {
3aeea5b9 2678 u8 tmp = cyy_readb(info, CyRTPR);
02f1175c 2679 return put_user(tmp, value);
02f1175c 2680 }
f7429034 2681 return 0;
02f1175c 2682} /* get_timeout */
1da177e4 2683
6c28181c
JS		 2684static int cy_cflags_changed(struct cyclades_port *info, unsigned long arg,
2685 struct cyclades_icount *cprev)
1da177e4 2686{
6c28181c
JS		 2687 struct cyclades_icount cnow;
2688 unsigned long flags;
2689 int ret;
1da177e4 2690
6c28181c
JS		 2691 spin_lock_irqsave(&info->card->card_lock, flags);
2692 cnow = info->icount; /* atomic copy */
2693 spin_unlock_irqrestore(&info->card->card_lock, flags);
2694
2695 ret = ((arg & TIOCM_RNG) && (cnow.rng != cprev->rng)) ||
2696 ((arg & TIOCM_DSR) && (cnow.dsr != cprev->dsr)) ||
2697 ((arg & TIOCM_CD) && (cnow.dcd != cprev->dcd)) ||
2698 ((arg & TIOCM_CTS) && (cnow.cts != cprev->cts));
2699
2700 *cprev = cnow;
2701
2702 return ret;
2703}
1da177e4
LT		 2704
2705/*
2706 * This routine allows the tty driver to implement device-
2707 * specific ioctl's. If the ioctl number passed in cmd is
2708 * not recognized by the driver, it should return ENOIOCTLCMD.
2709 */
2710static int
02f1175c
JS		 2711cy_ioctl(struct tty_struct *tty, struct file *file,
2712 unsigned int cmd, unsigned long arg)
1da177e4 2713{
cab9bdd1 2714 struct cyclades_port *info = tty->driver_data;
6c28181c 2715 struct cyclades_icount cnow; /* kernel counter temps */
02f1175c
JS		 2716 int ret_val = 0;
2717 unsigned long flags;
2718 void __user *argp = (void __user *)arg;
2719
2720 if (serial_paranoia_check(info, tty->name, "cy_ioctl"))
2721 return -ENODEV;
1da177e4
LT		 2722
2723#ifdef CY_DEBUG_OTHER
21719191
JS		 2724 printk(KERN_DEBUG "cyc:cy_ioctl ttyC%d, cmd = %x arg = %lx\n",
2725 info->line, cmd, arg);
1da177e4 2726#endif
7b130c0e 2727 lock_kernel();
1da177e4 2728
02f1175c
JS		 2729 switch (cmd) {
2730 case CYGETMON:
6c28181c
JS		 2731 if (copy_to_user(argp, &info->mon, sizeof(info->mon))) {
2732 ret_val = -EFAULT;
2733 break;
2734 }
2735 memset(&info->mon, 0, sizeof(info->mon));
02f1175c
JS		 2736 break;
2737 case CYGETTHRESH:
2738 ret_val = get_threshold(info, argp);
2739 break;
2740 case CYSETTHRESH:
2741 ret_val = set_threshold(info, arg);
2742 break;
2743 case CYGETDEFTHRESH:
6c28181c
JS		 2744 ret_val = put_user(info->default_threshold,
2745 (unsigned long __user *)argp);
02f1175c
JS		 2746 break;
2747 case CYSETDEFTHRESH:
6c28181c 2748 info->default_threshold = arg & 0x0f;
02f1175c
JS		 2749 break;
2750 case CYGETTIMEOUT:
2751 ret_val = get_timeout(info, argp);
2752 break;
2753 case CYSETTIMEOUT:
2754 ret_val = set_timeout(info, arg);
2755 break;
2756 case CYGETDEFTIMEOUT:
6c28181c
JS		 2757 ret_val = put_user(info->default_timeout,
2758 (unsigned long __user *)argp);
02f1175c
JS		 2759 break;
2760 case CYSETDEFTIMEOUT:
6c28181c 2761 info->default_timeout = arg & 0xff;
02f1175c 2762 break;
1da177e4 2763 case CYSETRFLOW:
02f1175c 2764 info->rflow = (int)arg;
02f1175c 2765 break;
1da177e4 2766 case CYGETRFLOW:
02f1175c
JS		 2767 ret_val = info->rflow;
2768 break;
1da177e4 2769 case CYSETRTSDTR_INV:
02f1175c 2770 info->rtsdtr_inv = (int)arg;
02f1175c 2771 break;
1da177e4 2772 case CYGETRTSDTR_INV:
02f1175c
JS		 2773 ret_val = info->rtsdtr_inv;
2774 break;
1da177e4 2775 case CYGETCD1400VER:
02f1175c
JS		 2776 ret_val = info->chip_rev;
2777 break;
1da177e4
LT		 2778#ifndef CONFIG_CYZ_INTR
2779 case CYZSETPOLLCYCLE:
02f1175c 2780 cyz_polling_cycle = (arg * HZ) / 1000;
02f1175c 2781 break;
1da177e4 2782 case CYZGETPOLLCYCLE:
02f1175c
JS		 2783 ret_val = (cyz_polling_cycle * 1000) / HZ;
2784 break;
2785#endif /* CONFIG_CYZ_INTR */
1da177e4 2786 case CYSETWAIT:
44b7d1b3 2787 info->port.closing_wait = (unsigned short)arg * HZ / 100;
02f1175c 2788 break;
1da177e4 2789 case CYGETWAIT:
44b7d1b3 2790 ret_val = info->port.closing_wait / (HZ / 100);
02f1175c
JS		 2791 break;
2792 case TIOCGSERIAL:
6c28181c 2793 ret_val = cy_get_serial_info(info, argp);
02f1175c
JS		 2794 break;
2795 case TIOCSSERIAL:
d13549f8 2796 ret_val = cy_set_serial_info(info, tty, argp);
02f1175c
JS		 2797 break;
2798 case TIOCSERGETLSR: /* Get line status register */
2799 ret_val = get_lsr_info(info, argp);
2800 break;
2801 /*
2802 * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
2803 * - mask passed in arg for lines of interest
2804 * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
2805 * Caller should use TIOCGICOUNT to see which one it was
2806 */
1da177e4 2807 case TIOCMIWAIT:
9fa1b3b1 2808 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 2809 /* note the counters on entry */
2c7fea99 2810 cnow = info->icount;
9fa1b3b1 2811 spin_unlock_irqrestore(&info->card->card_lock, flags);
6c28181c
JS		 2812 ret_val = wait_event_interruptible(info->delta_msr_wait,
2813 cy_cflags_changed(info, arg, &cnow));
2c7fea99 2814 break;
1da177e4 2815
02f1175c
JS		 2816 /*
2817 * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
2818 * Return: write counters to the user passed counter struct
2819 * NB: both 1->0 and 0->1 transitions are counted except for
2820 * RI where only 0->1 is counted.
2821 */
6c28181c
JS		 2822 case TIOCGICOUNT: {
2823 struct serial_icounter_struct sic = { };
2824
9fa1b3b1 2825 spin_lock_irqsave(&info->card->card_lock, flags);
02f1175c 2826 cnow = info->icount;
9fa1b3b1 2827 spin_unlock_irqrestore(&info->card->card_lock, flags);
6c28181c
JS		 2828
2829 sic.cts = cnow.cts;
2830 sic.dsr = cnow.dsr;
2831 sic.rng = cnow.rng;
2832 sic.dcd = cnow.dcd;
2833 sic.rx = cnow.rx;
2834 sic.tx = cnow.tx;
2835 sic.frame = cnow.frame;
2836 sic.overrun = cnow.overrun;
2837 sic.parity = cnow.parity;
2838 sic.brk = cnow.brk;
2839 sic.buf_overrun = cnow.buf_overrun;
2840
2841 if (copy_to_user(argp, &sic, sizeof(sic)))
2842 ret_val = -EFAULT;
02f1175c 2843 break;
6c28181c 2844 }
02f1175c
JS		 2845 default:
2846 ret_val = -ENOIOCTLCMD;
2847 }
7b130c0e 2848 unlock_kernel();
1da177e4
LT		 2849
2850#ifdef CY_DEBUG_OTHER
21719191 2851 printk(KERN_DEBUG "cyc:cy_ioctl done\n");
1da177e4 2852#endif
02f1175c
JS		 2853 return ret_val;
2854} /* cy_ioctl */
1da177e4
LT		 2855
2856/*
2857 * This routine allows the tty driver to be notified when
2858 * device's termios settings have changed. Note that a
2859 * well-designed tty driver should be prepared to accept the case
2860 * where old == NULL, and try to do something rational.
2861 */
02f1175c 2862static void cy_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
1da177e4 2863{
cab9bdd1 2864 struct cyclades_port *info = tty->driver_data;
1da177e4
LT		 2865
2866#ifdef CY_DEBUG_OTHER
21719191 2867 printk(KERN_DEBUG "cyc:cy_set_termios ttyC%d\n", info->line);
1da177e4
LT		 2868#endif
2869
d13549f8 2870 cy_set_line_char(info, tty);
02f1175c
JS		 2871
2872 if ((old_termios->c_cflag & CRTSCTS) &&
2873 !(tty->termios->c_cflag & CRTSCTS)) {
2874 tty->hw_stopped = 0;
2875 cy_start(tty);
2876 }
1da177e4 2877#if 0
02f1175c
JS		 2878 /*
2879 * No need to wake up processes in open wait, since they
2880 * sample the CLOCAL flag once, and don't recheck it.
2881 * XXX It's not clear whether the current behavior is correct
2882 * or not. Hence, this may change.....
2883 */
2884 if (!(old_termios->c_cflag & CLOCAL) &&
2885 (tty->termios->c_cflag & CLOCAL))
77451e53 2886 wake_up_interruptible(&info->port.open_wait);
1da177e4 2887#endif
02f1175c 2888} /* cy_set_termios */
1da177e4
LT		 2889
2890/* This function is used to send a high-priority XON/XOFF character to
2891 the device.
2892*/
02f1175c 2893static void cy_send_xchar(struct tty_struct *tty, char ch)
1da177e4 2894{
cab9bdd1 2895 struct cyclades_port *info = tty->driver_data;
875b206b
JS		 2896 struct cyclades_card *card;
2897 int channel;
1da177e4 2898
02f1175c 2899 if (serial_paranoia_check(info, tty->name, "cy_send_xchar"))
1da177e4
LT		 2900 return;
2901
02f1175c 2902 info->x_char = ch;
1da177e4
LT		 2903
2904 if (ch)
02f1175c 2905 cy_start(tty);
1da177e4
LT		 2906
2907 card = info->card;
875b206b 2908 channel = info->line - card->first_line;
1da177e4 2909
2693f485 2910 if (cy_is_Z(card)) {
02f1175c 2911 if (ch == STOP_CHAR(tty))
875b206b 2912 cyz_issue_cmd(card, channel, C_CM_SENDXOFF, 0L);
02f1175c 2913 else if (ch == START_CHAR(tty))
875b206b 2914 cyz_issue_cmd(card, channel, C_CM_SENDXON, 0L);
1da177e4
LT		 2915 }
2916}
2917
2918/* This routine is called by the upper-layer tty layer to signal
2919 that incoming characters should be throttled because the input
2920 buffers are close to full.
2921 */
02f1175c 2922static void cy_throttle(struct tty_struct *tty)
1da177e4 2923{
cab9bdd1 2924 struct cyclades_port *info = tty->driver_data;
875b206b 2925 struct cyclades_card *card;
02f1175c 2926 unsigned long flags;
1da177e4
LT		 2927
2928#ifdef CY_DEBUG_THROTTLE
02f1175c 2929 char buf[64];
1da177e4 2930
21719191 2931 printk(KERN_DEBUG "cyc:throttle %s: %ld...ttyC%d\n", tty_name(tty, buf),
02f1175c 2932 tty->ldisc.chars_in_buffer(tty), info->line);
1da177e4
LT		 2933#endif
2934
15ed6cc0 2935 if (serial_paranoia_check(info, tty->name, "cy_throttle"))
02f1175c 2936 return;
02f1175c
JS		 2937
2938 card = info->card;
2939
2940 if (I_IXOFF(tty)) {
2693f485 2941 if (!cy_is_Z(card))
02f1175c
JS		 2942 cy_send_xchar(tty, STOP_CHAR(tty));
2943 else
2944 info->throttle = 1;
2945 }
1da177e4 2946
02f1175c 2947 if (tty->termios->c_cflag & CRTSCTS) {
2693f485 2948 if (!cy_is_Z(card)) {
9fa1b3b1 2949 spin_lock_irqsave(&card->card_lock, flags);
4d768200 2950 cyy_change_rts_dtr(info, 0, TIOCM_RTS);
9fa1b3b1 2951 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2952 } else {
2953 info->throttle = 1;
2954 }
2955 }
02f1175c 2956} /* cy_throttle */
1da177e4
LT		 2957
2958/*
2959 * This routine notifies the tty driver that it should signal
2960 * that characters can now be sent to the tty without fear of
2961 * overrunning the input buffers of the line disciplines.
2962 */
02f1175c 2963static void cy_unthrottle(struct tty_struct *tty)
1da177e4 2964{
cab9bdd1 2965 struct cyclades_port *info = tty->driver_data;
875b206b 2966 struct cyclades_card *card;
02f1175c 2967 unsigned long flags;
1da177e4
LT		 2968
2969#ifdef CY_DEBUG_THROTTLE
02f1175c
JS		 2970 char buf[64];
2971
21719191 2972 printk(KERN_DEBUG "cyc:unthrottle %s: %ld...ttyC%d\n",
15ed6cc0 2973 tty_name(tty, buf), tty_chars_in_buffer(tty), info->line);
1da177e4
LT		 2974#endif
2975
15ed6cc0 2976 if (serial_paranoia_check(info, tty->name, "cy_unthrottle"))
02f1175c 2977 return;
1da177e4 2978
02f1175c
JS		 2979 if (I_IXOFF(tty)) {
2980 if (info->x_char)
2981 info->x_char = 0;
2982 else
2983 cy_send_xchar(tty, START_CHAR(tty));
1da177e4 2984 }
1da177e4 2985
02f1175c
JS		 2986 if (tty->termios->c_cflag & CRTSCTS) {
2987 card = info->card;
2693f485 2988 if (!cy_is_Z(card)) {
9fa1b3b1 2989 spin_lock_irqsave(&card->card_lock, flags);
4d768200 2990 cyy_change_rts_dtr(info, TIOCM_RTS, 0);
9fa1b3b1 2991 spin_unlock_irqrestore(&card->card_lock, flags);
02f1175c
JS		 2992 } else {
2993 info->throttle = 0;
2994 }
2995 }
02f1175c 2996} /* cy_unthrottle */
1da177e4
LT		 2997
2998/* cy_start and cy_stop provide software output flow control as a
2999 function of XON/XOFF, software CTS, and other such stuff.
3000*/
02f1175c 3001static void cy_stop(struct tty_struct *tty)
1da177e4 3002{
02f1175c 3003 struct cyclades_card *cinfo;
cab9bdd1 3004 struct cyclades_port *info = tty->driver_data;
3aeea5b9 3005 int channel;
02f1175c 3006 unsigned long flags;
1da177e4
LT		 3007
3008#ifdef CY_DEBUG_OTHER
21719191 3009 printk(KERN_DEBUG "cyc:cy_stop ttyC%d\n", info->line);
1da177e4
LT		 3010#endif
3011
02f1175c
JS		 3012 if (serial_paranoia_check(info, tty->name, "cy_stop"))
3013 return;
1da177e4 3014
875b206b 3015 cinfo = info->card;
02f1175c 3016 channel = info->line - cinfo->first_line;
2693f485 3017 if (!cy_is_Z(cinfo)) {
9fa1b3b1 3018 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 3019 cyy_writeb(info, CyCAR, channel & 0x03);
3020 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) & ~CyTxRdy);
9fa1b3b1 3021 spin_unlock_irqrestore(&cinfo->card_lock, flags);
02f1175c 3022 }
02f1175c 3023} /* cy_stop */
1da177e4 3024
02f1175c 3025static void cy_start(struct tty_struct *tty)
1da177e4 3026{
02f1175c 3027 struct cyclades_card *cinfo;
cab9bdd1 3028 struct cyclades_port *info = tty->driver_data;
3aeea5b9 3029 int channel;
02f1175c 3030 unsigned long flags;
1da177e4
LT		 3031
3032#ifdef CY_DEBUG_OTHER
21719191 3033 printk(KERN_DEBUG "cyc:cy_start ttyC%d\n", info->line);
1da177e4
LT		 3034#endif
3035
02f1175c
JS		 3036 if (serial_paranoia_check(info, tty->name, "cy_start"))
3037 return;
1da177e4 3038
875b206b 3039 cinfo = info->card;
02f1175c 3040 channel = info->line - cinfo->first_line;
2693f485 3041 if (!cy_is_Z(cinfo)) {
9fa1b3b1 3042 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 3043 cyy_writeb(info, CyCAR, channel & 0x03);
3044 cyy_writeb(info, CySRER, cyy_readb(info, CySRER) | CyTxRdy);
9fa1b3b1 3045 spin_unlock_irqrestore(&cinfo->card_lock, flags);
02f1175c 3046 }
02f1175c 3047} /* cy_start */
1da177e4 3048
1da177e4
LT		 3049/*
3050 * cy_hangup() --- called by tty_hangup() when a hangup is signaled.
3051 */
02f1175c 3052static void cy_hangup(struct tty_struct *tty)
1da177e4 3053{
cab9bdd1 3054 struct cyclades_port *info = tty->driver_data;
02f1175c 3055
1da177e4 3056#ifdef CY_DEBUG_OTHER
21719191 3057 printk(KERN_DEBUG "cyc:cy_hangup ttyC%d\n", info->line);
1da177e4
LT		 3058#endif
3059
02f1175c
JS		 3060 if (serial_paranoia_check(info, tty->name, "cy_hangup"))
3061 return;
1da177e4 3062
02f1175c 3063 cy_flush_buffer(tty);
d13549f8 3064 cy_shutdown(info, tty);
174e6fe0 3065 tty_port_hangup(&info->port);
02f1175c 3066} /* cy_hangup */
1da177e4 3067
f0737579
JS		 3068static int cyy_carrier_raised(struct tty_port *port)
3069{
3070 struct cyclades_port *info = container_of(port, struct cyclades_port,
3071 port);
3072 struct cyclades_card *cinfo = info->card;
f0737579
JS		 3073 unsigned long flags;
3074 int channel = info->line - cinfo->first_line;
f0737579
JS		 3075 u32 cd;
3076
f0737579 3077 spin_lock_irqsave(&cinfo->card_lock, flags);
3aeea5b9
JS		 3078 cyy_writeb(info, CyCAR, channel & 0x03);
3079 cd = cyy_readb(info, CyMSVR1) & CyDCD;
f0737579
JS		 3080 spin_unlock_irqrestore(&cinfo->card_lock, flags);
3081
3082 return cd;
3083}
3084
3085static void cyy_dtr_rts(struct tty_port *port, int raise)
3086{
3087 struct cyclades_port *info = container_of(port, struct cyclades_port,
3088 port);
3089 struct cyclades_card *cinfo = info->card;
f0737579 3090 unsigned long flags;
f0737579
JS		 3091
3092 spin_lock_irqsave(&cinfo->card_lock, flags);
4d768200
JS		 3093 cyy_change_rts_dtr(info, raise ? TIOCM_RTS | TIOCM_DTR : 0,
3094 raise ? 0 : TIOCM_RTS | TIOCM_DTR);
f0737579
JS		 3095 spin_unlock_irqrestore(&cinfo->card_lock, flags);
3096}
3097
3098static int cyz_carrier_raised(struct tty_port *port)
3099{
3100 struct cyclades_port *info = container_of(port, struct cyclades_port,
3101 port);
f0737579 3102
f0eefdc3 3103 return readl(&info->u.cyz.ch_ctrl->rs_status) & C_RS_DCD;
f0737579
JS		 3104}
3105
3106static void cyz_dtr_rts(struct tty_port *port, int raise)
3107{
3108 struct cyclades_port *info = container_of(port, struct cyclades_port,
3109 port);
3110 struct cyclades_card *cinfo = info->card;
f0eefdc3 3111 struct CH_CTRL __iomem *ch_ctrl = info->u.cyz.ch_ctrl;
f0737579
JS		 3112 int ret, channel = info->line - cinfo->first_line;
3113 u32 rs;
3114
f0eefdc3 3115 rs = readl(&ch_ctrl->rs_control);
f0737579
JS		 3116 if (raise)
3117 rs |= C_RS_RTS | C_RS_DTR;
3118 else
3119 rs &= ~(C_RS_RTS | C_RS_DTR);
f0eefdc3 3120 cy_writel(&ch_ctrl->rs_control, rs);
f0737579
JS		 3121 ret = cyz_issue_cmd(cinfo, channel, C_CM_IOCTLM, 0L);
3122 if (ret != 0)
3123 printk(KERN_ERR "%s: retval on ttyC%d was %x\n",
3124 __func__, info->line, ret);
3125#ifdef CY_DEBUG_DTR
3126 printk(KERN_DEBUG "%s: raising Z DTR\n", __func__);
3127#endif
3128}
3129
3130static const struct tty_port_operations cyy_port_ops = {
3131 .carrier_raised = cyy_carrier_raised,
3132 .dtr_rts = cyy_dtr_rts,
3133};
3134
3135static const struct tty_port_operations cyz_port_ops = {
3136 .carrier_raised = cyz_carrier_raised,
3137 .dtr_rts = cyz_dtr_rts,
3138};
3139
1da177e4
LT		 3140/*
3141 * ---------------------------------------------------------------------
3142 * cy_init() and friends
3143 *
3144 * cy_init() is called at boot-time to initialize the serial driver.
3145 * ---------------------------------------------------------------------
3146 */
3147
dd025c0c 3148static int __devinit cy_init_card(struct cyclades_card *cinfo)
0809e267
JS		 3149{
3150 struct cyclades_port *info;
f0eefdc3 3151 unsigned int channel, port;
0809e267 3152
3046d50e 3153 spin_lock_init(&cinfo->card_lock);
963118ee 3154 cinfo->intr_enabled = 0;
3046d50e 3155
963118ee
JS		 3156 cinfo->ports = kcalloc(cinfo->nports, sizeof(*cinfo->ports),
3157 GFP_KERNEL);
dd025c0c
JS		 3158 if (cinfo->ports == NULL) {
3159 printk(KERN_ERR "Cyclades: cannot allocate ports\n");
3160 return -ENOMEM;
3161 }
3162
f0eefdc3
JS		 3163 for (channel = 0, port = cinfo->first_line; channel < cinfo->nports;
3164 channel++, port++) {
3165 info = &cinfo->ports[channel];
44b7d1b3 3166 tty_port_init(&info->port);
3046d50e 3167 info->magic = CYCLADES_MAGIC;
875b206b 3168 info->card = cinfo;
3046d50e 3169 info->line = port;
3046d50e 3170
44b7d1b3
AC		 3171 info->port.closing_wait = CLOSING_WAIT_DELAY;
3172 info->port.close_delay = 5 * HZ / 10;
77451e53 3173 info->port.flags = STD_COM_FLAGS;
2c7fea99 3174 init_completion(&info->shutdown_wait);
3046d50e
JS		 3175 init_waitqueue_head(&info->delta_msr_wait);
3176
2693f485 3177 if (cy_is_Z(cinfo)) {
f0eefdc3
JS		 3178 struct FIRM_ID *firm_id = cinfo->base_addr + ID_ADDRESS;
3179 struct ZFW_CTRL *zfw_ctrl;
3180
f0737579 3181 info->port.ops = &cyz_port_ops;
0809e267 3182 info->type = PORT_STARTECH;
f0eefdc3
JS		 3183
3184 zfw_ctrl = cinfo->base_addr +
3185 (readl(&firm_id->zfwctrl_addr) & 0xfffff);
3186 info->u.cyz.ch_ctrl = &zfw_ctrl->ch_ctrl[channel];
3187 info->u.cyz.buf_ctrl = &zfw_ctrl->buf_ctrl[channel];
3188
101b8159 3189 if (cinfo->hw_ver == ZO_V1)
0809e267
JS		 3190 info->xmit_fifo_size = CYZ_FIFO_SIZE;
3191 else
3046d50e 3192 info->xmit_fifo_size = 4 * CYZ_FIFO_SIZE;
0809e267 3193#ifdef CONFIG_CYZ_INTR
3991428d
JS		 3194 setup_timer(&cyz_rx_full_timer[port],
3195 cyz_rx_restart, (unsigned long)info);
0809e267 3196#endif
3046d50e 3197 } else {
f0eefdc3 3198 unsigned short chip_number;
963118ee 3199 int index = cinfo->bus_index;
f0eefdc3 3200
f0737579 3201 info->port.ops = &cyy_port_ops;
0809e267 3202 info->type = PORT_CIRRUS;
0809e267 3203 info->xmit_fifo_size = CyMAX_CHAR_FIFO;
3046d50e 3204 info->cor1 = CyPARITY_NONE | Cy_1_STOP | Cy_8_BITS;
0809e267
JS		 3205 info->cor2 = CyETC;
3206 info->cor3 = 0x08; /* _very_ small rcv threshold */
3046d50e 3207
f0eefdc3 3208 chip_number = channel / CyPORTS_PER_CHIP;
3aeea5b9
JS		 3209 info->u.cyy.base_addr = cinfo->base_addr +
3210 (cy_chip_offset[chip_number] << index);
3211 info->chip_rev = cyy_readb(info, CyGFRCR);
15ed6cc0
AC		 3212
3213 if (info->chip_rev >= CD1400_REV_J) {
0809e267
JS		 3214 /* It is a CD1400 rev. J or later */
3215 info->tbpr = baud_bpr_60[13]; /* Tx BPR */
3216 info->tco = baud_co_60[13]; /* Tx CO */
3217 info->rbpr = baud_bpr_60[13]; /* Rx BPR */
3218 info->rco = baud_co_60[13]; /* Rx CO */
0809e267
JS		 3219 info->rtsdtr_inv = 1;
3220 } else {
3221 info->tbpr = baud_bpr_25[13]; /* Tx BPR */
3222 info->tco = baud_co_25[13]; /* Tx CO */
3223 info->rbpr = baud_bpr_25[13]; /* Rx BPR */
3224 info->rco = baud_co_25[13]; /* Rx CO */
0809e267
JS		 3225 info->rtsdtr_inv = 0;
3226 }
3046d50e
JS		 3227 info->read_status_mask = CyTIMEOUT | CySPECHAR |
3228 CyBREAK | CyPARITY | CyFRAME | CyOVERRUN;
0809e267 3229 }
3046d50e 3230
0809e267 3231 }
3046d50e
JS		 3232
3233#ifndef CONFIG_CYZ_INTR
2693f485 3234 if (cy_is_Z(cinfo) && !timer_pending(&cyz_timerlist)) {
3046d50e
JS		 3235 mod_timer(&cyz_timerlist, jiffies + 1);
3236#ifdef CY_PCI_DEBUG
3237 printk(KERN_DEBUG "Cyclades-Z polling initialized\n");
3238#endif
3239 }
3240#endif
dd025c0c 3241 return 0;
0809e267
JS		 3242}
3243
1da177e4
LT		 3244/* initialize chips on Cyclom-Y card -- return number of valid
3245 chips (which is number of ports/4) */
31b4f0a1
JS		 3246static unsigned short __devinit cyy_init_card(void __iomem *true_base_addr,
3247 int index)
1da177e4 3248{
02f1175c
JS		 3249 unsigned int chip_number;
3250 void __iomem *base_addr;
3251
3252 cy_writeb(true_base_addr + (Cy_HwReset << index), 0);
3253 /* Cy_HwReset is 0x1400 */
3254 cy_writeb(true_base_addr + (Cy_ClrIntr << index), 0);
3255 /* Cy_ClrIntr is 0x1800 */
3256 udelay(500L);
3257
15ed6cc0
AC		 3258 for (chip_number = 0; chip_number < CyMAX_CHIPS_PER_CARD;
3259 chip_number++) {
02f1175c
JS		 3260 base_addr =
3261 true_base_addr + (cy_chip_offset[chip_number] << index);
3262 mdelay(1);
db05c3b1 3263 if (readb(base_addr + (CyCCR << index)) != 0x00) {
02f1175c
JS		 3264 /*************
3265 printk(" chip #%d at %#6lx is never idle (CCR != 0)\n",
3266 chip_number, (unsigned long)base_addr);
3267 *************/
3268 return chip_number;
3269 }
3270
3271 cy_writeb(base_addr + (CyGFRCR << index), 0);
3272 udelay(10L);
3273
3274 /* The Cyclom-16Y does not decode address bit 9 and therefore
3275 cannot distinguish between references to chip 0 and a non-
3276 existent chip 4. If the preceding clearing of the supposed
3277 chip 4 GFRCR register appears at chip 0, there is no chip 4
3278 and this must be a Cyclom-16Y, not a Cyclom-32Ye.
3279 */
db05c3b1 3280 if (chip_number == 4 && readb(true_base_addr +
02f1175c
JS		 3281 (cy_chip_offset[0] << index) +
3282 (CyGFRCR << index)) == 0) {
3283 return chip_number;
3284 }
3285
3286 cy_writeb(base_addr + (CyCCR << index), CyCHIP_RESET);
3287 mdelay(1);
3288
db05c3b1 3289 if (readb(base_addr + (CyGFRCR << index)) == 0x00) {
02f1175c
JS		 3290 /*
3291 printk(" chip #%d at %#6lx is not responding ",
3292 chip_number, (unsigned long)base_addr);
3293 printk("(GFRCR stayed 0)\n",
3294 */
3295 return chip_number;
3296 }
db05c3b1 3297 if ((0xf0 & (readb(base_addr + (CyGFRCR << index)))) !=
02f1175c
JS		 3298 0x40) {
3299 /*
3300 printk(" chip #%d at %#6lx is not valid (GFRCR == "
3301 "%#2x)\n",
3302 chip_number, (unsigned long)base_addr,
3303 base_addr[CyGFRCR<<index]);
3304 */
3305 return chip_number;
3306 }
3307 cy_writeb(base_addr + (CyGCR << index), CyCH0_SERIAL);
db05c3b1 3308 if (readb(base_addr + (CyGFRCR << index)) >= CD1400_REV_J) {
02f1175c
JS		 3309 /* It is a CD1400 rev. J or later */
3310 /* Impossible to reach 5ms with this chip.
3311 Changed to 2ms instead (f = 500 Hz). */
3312 cy_writeb(base_addr + (CyPPR << index), CyCLOCK_60_2MS);
3313 } else {
3314 /* f = 200 Hz */
3315 cy_writeb(base_addr + (CyPPR << index), CyCLOCK_25_5MS);
3316 }
1da177e4 3317
02f1175c
JS		 3318 /*
3319 printk(" chip #%d at %#6lx is rev 0x%2x\n",
3320 chip_number, (unsigned long)base_addr,
db05c3b1 3321 readb(base_addr+(CyGFRCR<<index)));
02f1175c
JS		 3322 */
3323 }
3324 return chip_number;
3325} /* cyy_init_card */
1da177e4
LT		 3326
3327/*
3328 * ---------------------------------------------------------------------
3329 * cy_detect_isa() - Probe for Cyclom-Y/ISA boards.
3330 * sets global variables and return the number of ISA boards found.
3331 * ---------------------------------------------------------------------
3332 */
02f1175c 3333static int __init cy_detect_isa(void)
1da177e4
LT		 3334{
3335#ifdef CONFIG_ISA
02f1175c
JS		 3336 unsigned short cy_isa_irq, nboard;
3337 void __iomem *cy_isa_address;
3338 unsigned short i, j, cy_isa_nchan;
1da177e4 3339#ifdef MODULE
02f1175c 3340 int isparam = 0;
1da177e4
LT		 3341#endif
3342
02f1175c 3343 nboard = 0;
1da177e4
LT		 3344
3345#ifdef MODULE
3346 /* Check for module parameters */
02f1175c
JS		 3347 for (i = 0; i < NR_CARDS; i++) {
3348 if (maddr[i] || i) {
3349 isparam = 1;
3350 cy_isa_addresses[i] = maddr[i];
3351 }
3352 if (!maddr[i])
3353 break;
1da177e4
LT		 3354 }
3355#endif
3356
02f1175c
JS		 3357 /* scan the address table probing for Cyclom-Y/ISA boards */
3358 for (i = 0; i < NR_ISA_ADDRS; i++) {
3359 unsigned int isa_address = cy_isa_addresses[i];
15ed6cc0 3360 if (isa_address == 0x0000)
096dcfce 3361 return nboard;
1da177e4 3362
02f1175c 3363 /* probe for CD1400... */
cd989b3a 3364 cy_isa_address = ioremap_nocache(isa_address, CyISA_Ywin);
3137553d
JS		 3365 if (cy_isa_address == NULL) {
3366 printk(KERN_ERR "Cyclom-Y/ISA: can't remap base "
3367 "address\n");
3368 continue;
3369 }
02f1175c
JS		 3370 cy_isa_nchan = CyPORTS_PER_CHIP *
3371 cyy_init_card(cy_isa_address, 0);
3372 if (cy_isa_nchan == 0) {
3137553d 3373 iounmap(cy_isa_address);
02f1175c
JS		 3374 continue;
3375 }
1da177e4
LT		 3376#ifdef MODULE
3377 if (isparam && irq[i])
02f1175c 3378 cy_isa_irq = irq[i];
1da177e4
LT		 3379 else
3380#endif
02f1175c
JS		 3381 /* find out the board's irq by probing */
3382 cy_isa_irq = detect_isa_irq(cy_isa_address);
3383 if (cy_isa_irq == 0) {
21719191
JS		 3384 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but the "
3385 "IRQ could not be detected.\n",
02f1175c 3386 (unsigned long)cy_isa_address);
3137553d 3387 iounmap(cy_isa_address);
02f1175c
JS		 3388 continue;
3389 }
3390
3391 if ((cy_next_channel + cy_isa_nchan) > NR_PORTS) {
21719191
JS		 3392 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
3393 "more channels are available. Change NR_PORTS "
3394 "in cyclades.c and recompile kernel.\n",
02f1175c 3395 (unsigned long)cy_isa_address);
3137553d 3396 iounmap(cy_isa_address);
096dcfce 3397 return nboard;
02f1175c
JS		 3398 }
3399 /* fill the next cy_card structure available */
3400 for (j = 0; j < NR_CARDS; j++) {
f7429034 3401 if (cy_card[j].base_addr == NULL)
02f1175c
JS		 3402 break;
3403 }
3404 if (j == NR_CARDS) { /* no more cy_cards available */
21719191
JS		 3405 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but no "
3406 "more cards can be used. Change NR_CARDS in "
3407 "cyclades.c and recompile kernel.\n",
02f1175c 3408 (unsigned long)cy_isa_address);
3137553d 3409 iounmap(cy_isa_address);
096dcfce 3410 return nboard;
02f1175c
JS		 3411 }
3412
3413 /* allocate IRQ */
3414 if (request_irq(cy_isa_irq, cyy_interrupt,
3415 IRQF_DISABLED, "Cyclom-Y", &cy_card[j])) {
21719191
JS		 3416 printk(KERN_ERR "Cyclom-Y/ISA found at 0x%lx, but "
3417 "could not allocate IRQ#%d.\n",
3418 (unsigned long)cy_isa_address, cy_isa_irq);
3137553d 3419 iounmap(cy_isa_address);
096dcfce 3420 return nboard;
02f1175c
JS		 3421 }
3422
3423 /* set cy_card */
3424 cy_card[j].base_addr = cy_isa_address;
97e87f8e 3425 cy_card[j].ctl_addr.p9050 = NULL;
02f1175c
JS		 3426 cy_card[j].irq = (int)cy_isa_irq;
3427 cy_card[j].bus_index = 0;
3428 cy_card[j].first_line = cy_next_channel;
963118ee
JS		 3429 cy_card[j].num_chips = cy_isa_nchan / CyPORTS_PER_CHIP;
3430 cy_card[j].nports = cy_isa_nchan;
3137553d
JS		 3431 if (cy_init_card(&cy_card[j])) {
3432 cy_card[j].base_addr = NULL;
3433 free_irq(cy_isa_irq, &cy_card[j]);
3434 iounmap(cy_isa_address);
3435 continue;
3436 }
02f1175c
JS		 3437 nboard++;
3438
21719191
JS		 3439 printk(KERN_INFO "Cyclom-Y/ISA #%d: 0x%lx-0x%lx, IRQ%d found: "
3440 "%d channels starting from port %d\n",
02f1175c
JS		 3441 j + 1, (unsigned long)cy_isa_address,
3442 (unsigned long)(cy_isa_address + (CyISA_Ywin - 1)),
21719191
JS		 3443 cy_isa_irq, cy_isa_nchan, cy_next_channel);
3444
6ad1ccc1
JS		 3445 for (j = cy_next_channel;
3446 j < cy_next_channel + cy_isa_nchan; j++)
3447 tty_register_device(cy_serial_driver, j, NULL);
02f1175c
JS		 3448 cy_next_channel += cy_isa_nchan;
3449 }
096dcfce 3450 return nboard;
1da177e4 3451#else
096dcfce 3452 return 0;
02f1175c
JS		 3453#endif /* CONFIG_ISA */
3454} /* cy_detect_isa */
1da177e4 3455
58936d8d 3456#ifdef CONFIG_PCI
054f5b0a
JS		 3457static inline int __devinit cyc_isfwstr(const char *str, unsigned int size)
3458{
3459 unsigned int a;
3460
3461 for (a = 0; a < size && *str; a++, str++)
3462 if (*str & 0x80)
3463 return -EINVAL;
3464
3465 for (; a < size; a++, str++)
3466 if (*str)
3467 return -EINVAL;
3468
3469 return 0;
3470}
3471
f61e761e 3472static inline void __devinit cyz_fpga_copy(void __iomem *fpga, const u8 *data,
054f5b0a
JS		 3473 unsigned int size)
3474{
3475 for (; size > 0; size--) {
3476 cy_writel(fpga, *data++);
3477 udelay(10);
3478 }
3479}
3480
3481static void __devinit plx_init(struct pci_dev *pdev, int irq,
3482 struct RUNTIME_9060 __iomem *addr)
1da177e4 3483{
02f1175c 3484 /* Reset PLX */
054f5b0a 3485 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x40000000);
02f1175c 3486 udelay(100L);
054f5b0a 3487 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x40000000);
02f1175c
JS		 3488
3489 /* Reload Config. Registers from EEPROM */
054f5b0a 3490 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) | 0x20000000);
02f1175c 3491 udelay(100L);
054f5b0a
JS		 3492 cy_writel(&addr->init_ctrl, readl(&addr->init_ctrl) & ~0x20000000);
3493
3494 /* For some yet unknown reason, once the PLX9060 reloads the EEPROM,
3495 * the IRQ is lost and, thus, we have to re-write it to the PCI config.
3496 * registers. This will remain here until we find a permanent fix.
3497 */
3498 pci_write_config_byte(pdev, PCI_INTERRUPT_LINE, irq);
3499}
3500
3501static int __devinit __cyz_load_fw(const struct firmware *fw,
3502 const char *name, const u32 mailbox, void __iomem *base,
3503 void __iomem *fpga)
3504{
f61e761e
DW		 3505 const void *ptr = fw->data;
3506 const struct zfile_header *h = ptr;
3507 const struct zfile_config *c, *cs;
3508 const struct zfile_block *b, *bs;
054f5b0a
JS		 3509 unsigned int a, tmp, len = fw->size;
3510#define BAD_FW KERN_ERR "Bad firmware: "
3511 if (len < sizeof(*h)) {
3512 printk(BAD_FW "too short: %u<%zu\n", len, sizeof(*h));
3513 return -EINVAL;
3514 }
3515
3516 cs = ptr + h->config_offset;
3517 bs = ptr + h->block_offset;
3518
3519 if ((void *)(cs + h->n_config) > ptr + len ||
3520 (void *)(bs + h->n_blocks) > ptr + len) {
3521 printk(BAD_FW "too short");
3522 return -EINVAL;
3523 }
3524
3525 if (cyc_isfwstr(h->name, sizeof(h->name)) ||
3526 cyc_isfwstr(h->date, sizeof(h->date))) {
3527 printk(BAD_FW "bad formatted header string\n");
3528 return -EINVAL;
3529 }
3530
3531 if (strncmp(name, h->name, sizeof(h->name))) {
3532 printk(BAD_FW "bad name '%s' (expected '%s')\n", h->name, name);
3533 return -EINVAL;
3534 }
3535
3536 tmp = 0;
3537 for (c = cs; c < cs + h->n_config; c++) {
3538 for (a = 0; a < c->n_blocks; a++)
3539 if (c->block_list[a] > h->n_blocks) {
3540 printk(BAD_FW "bad block ref number in cfgs\n");
3541 return -EINVAL;
3542 }
3543 if (c->mailbox == mailbox && c->function == 0) /* 0 is normal */
3544 tmp++;
3545 }
3546 if (!tmp) {
3547 printk(BAD_FW "nothing appropriate\n");
3548 return -EINVAL;
3549 }
3550
3551 for (b = bs; b < bs + h->n_blocks; b++)
3552 if (b->file_offset + b->size > len) {
3553 printk(BAD_FW "bad block data offset\n");
3554 return -EINVAL;
3555 }
3556
3557 /* everything is OK, let's seek'n'load it */
3558 for (c = cs; c < cs + h->n_config; c++)
3559 if (c->mailbox == mailbox && c->function == 0)
3560 break;
3561
3562 for (a = 0; a < c->n_blocks; a++) {
3563 b = &bs[c->block_list[a]];
3564 if (b->type == ZBLOCK_FPGA) {
3565 if (fpga != NULL)
3566 cyz_fpga_copy(fpga, ptr + b->file_offset,
3567 b->size);
3568 } else {
3569 if (base != NULL)
3570 memcpy_toio(base + b->ram_offset,
3571 ptr + b->file_offset, b->size);
3572 }
3573 }
3574#undef BAD_FW
3575 return 0;
3576}
3577
3578static int __devinit cyz_load_fw(struct pci_dev *pdev, void __iomem *base_addr,
3579 struct RUNTIME_9060 __iomem *ctl_addr, int irq)
3580{
3581 const struct firmware *fw;
3582 struct FIRM_ID __iomem *fid = base_addr + ID_ADDRESS;
3583 struct CUSTOM_REG __iomem *cust = base_addr;
3584 struct ZFW_CTRL __iomem *pt_zfwctrl;
c4923b4f 3585 void __iomem *tmp;
963118ee 3586 u32 mailbox, status, nchan;
054f5b0a
JS		 3587 unsigned int i;
3588 int retval;
3589
3590 retval = request_firmware(&fw, "cyzfirm.bin", &pdev->dev);
3591 if (retval) {
3592 dev_err(&pdev->dev, "can't get firmware\n");
3593 goto err;
3594 }
3595
3596 /* Check whether the firmware is already loaded and running. If
3597 positive, skip this board */
2693f485 3598 if (__cyz_fpga_loaded(ctl_addr) && readl(&fid->signature) == ZFIRM_ID) {
054f5b0a
JS		 3599 u32 cntval = readl(base_addr + 0x190);
3600
3601 udelay(100);
3602 if (cntval != readl(base_addr + 0x190)) {
3603 /* FW counter is working, FW is running */
3604 dev_dbg(&pdev->dev, "Cyclades-Z FW already loaded. "
3605 "Skipping board.\n");
3606 retval = 0;
3607 goto err_rel;
3608 }
3609 }
3610
3611 /* start boot */
3612 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) &
3613 ~0x00030800UL);
3614
3615 mailbox = readl(&ctl_addr->mail_box_0);
3616
2693f485 3617 if (mailbox == 0 || __cyz_fpga_loaded(ctl_addr)) {
054f5b0a
JS		 3618 /* stops CPU and set window to beginning of RAM */
3619 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3620 cy_writel(&cust->cpu_stop, 0);
3621 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3622 udelay(100);
3623 }
3624
3625 plx_init(pdev, irq, ctl_addr);
3626
3627 if (mailbox != 0) {
3628 /* load FPGA */
3629 retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, NULL,
3630 base_addr);
3631 if (retval)
3632 goto err_rel;
2693f485 3633 if (!__cyz_fpga_loaded(ctl_addr)) {
054f5b0a
JS		 3634 dev_err(&pdev->dev, "fw upload successful, but fw is "
3635 "not loaded\n");
3636 goto err_rel;
3637 }
3638 }
3639
3640 /* stops CPU and set window to beginning of RAM */
3641 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3642 cy_writel(&cust->cpu_stop, 0);
3643 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3644 udelay(100);
3645
3646 /* clear memory */
c4923b4f 3647 for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
054f5b0a
JS		 3648 cy_writeb(tmp, 255);
3649 if (mailbox != 0) {
3650 /* set window to last 512K of RAM */
3651 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM + RAM_SIZE);
c4923b4f 3652 for (tmp = base_addr; tmp < base_addr + RAM_SIZE; tmp++)
054f5b0a
JS		 3653 cy_writeb(tmp, 255);
3654 /* set window to beginning of RAM */
3655 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
054f5b0a
JS		 3656 }
3657
3658 retval = __cyz_load_fw(fw, "Cyclom-Z", mailbox, base_addr, NULL);
3659 release_firmware(fw);
3660 if (retval)
3661 goto err;
3662
3663 /* finish boot and start boards */
3664 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3665 cy_writel(&cust->cpu_start, 0);
3666 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3667 i = 0;
3668 while ((status = readl(&fid->signature)) != ZFIRM_ID && i++ < 40)
3669 msleep(100);
3670 if (status != ZFIRM_ID) {
3671 if (status == ZFIRM_HLT) {
3672 dev_err(&pdev->dev, "you need an external power supply "
3673 "for this number of ports. Firmware halted and "
3674 "board reset.\n");
3675 retval = -EIO;
3676 goto err;
3677 }
3678 dev_warn(&pdev->dev, "fid->signature = 0x%x... Waiting "
3679 "some more time\n", status);
3680 while ((status = readl(&fid->signature)) != ZFIRM_ID &&
3681 i++ < 200)
3682 msleep(100);
3683 if (status != ZFIRM_ID) {
3684 dev_err(&pdev->dev, "Board not started in 20 seconds! "
3685 "Giving up. (fid->signature = 0x%x)\n",
3686 status);
3687 dev_info(&pdev->dev, "*** Warning ***: if you are "
3688 "upgrading the FW, please power cycle the "
3689 "system before loading the new FW to the "
3690 "Cyclades-Z.\n");
3691
2693f485 3692 if (__cyz_fpga_loaded(ctl_addr))
054f5b0a
JS		 3693 plx_init(pdev, irq, ctl_addr);
3694
3695 retval = -EIO;
3696 goto err;
3697 }
3698 dev_dbg(&pdev->dev, "Firmware started after %d seconds.\n",
3699 i / 10);
3700 }
3701 pt_zfwctrl = base_addr + readl(&fid->zfwctrl_addr);
3702
3703 dev_dbg(&pdev->dev, "fid=> %p, zfwctrl_addr=> %x, npt_zfwctrl=> %p\n",
3704 base_addr + ID_ADDRESS, readl(&fid->zfwctrl_addr),
3705 base_addr + readl(&fid->zfwctrl_addr));
3706
963118ee 3707 nchan = readl(&pt_zfwctrl->board_ctrl.n_channel);
054f5b0a 3708 dev_info(&pdev->dev, "Cyclades-Z FW loaded: version = %x, ports = %u\n",
963118ee 3709 readl(&pt_zfwctrl->board_ctrl.fw_version), nchan);
054f5b0a 3710
963118ee 3711 if (nchan == 0) {
054f5b0a
JS		 3712 dev_warn(&pdev->dev, "no Cyclades-Z ports were found. Please "
3713 "check the connection between the Z host card and the "
3714 "serial expanders.\n");
3715
2693f485 3716 if (__cyz_fpga_loaded(ctl_addr))
054f5b0a
JS		 3717 plx_init(pdev, irq, ctl_addr);
3718
3719 dev_info(&pdev->dev, "Null number of ports detected. Board "
3720 "reset.\n");
3721 retval = 0;
3722 goto err;
3723 }
3724
3725 cy_writel(&pt_zfwctrl->board_ctrl.op_system, C_OS_LINUX);
3726 cy_writel(&pt_zfwctrl->board_ctrl.dr_version, DRIVER_VERSION);
3727
3728 /*
3729 Early firmware failed to start looking for commands.
3730 This enables firmware interrupts for those commands.
3731 */
3732 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
3733 (1 << 17));
3734 cy_writel(&ctl_addr->intr_ctrl_stat, readl(&ctl_addr->intr_ctrl_stat) |
3735 0x00030800UL);
3736
963118ee 3737 return nchan;
054f5b0a
JS		 3738err_rel:
3739 release_firmware(fw);
3740err:
3741 return retval;
1da177e4
LT		 3742}
3743
58936d8d
JS		 3744static int __devinit cy_pci_probe(struct pci_dev *pdev,
3745 const struct pci_device_id *ent)
1da177e4 3746{
3137553d
JS		 3747 void __iomem *addr0 = NULL, *addr2 = NULL;
3748 char *card_name = NULL;
101b8159 3749 u32 uninitialized_var(mailbox);
3137553d
JS		 3750 unsigned int device_id, nchan = 0, card_no, i;
3751 unsigned char plx_ver;
3752 int retval, irq;
02f1175c 3753
58936d8d
JS		 3754 retval = pci_enable_device(pdev);
3755 if (retval) {
3756 dev_err(&pdev->dev, "cannot enable device\n");
3137553d 3757 goto err;
58936d8d 3758 }
1da177e4 3759
58936d8d 3760 /* read PCI configuration area */
3137553d 3761 irq = pdev->irq;
58936d8d 3762 device_id = pdev->device & ~PCI_DEVICE_ID_MASK;
1da177e4 3763
3137553d
JS		 3764#if defined(__alpha__)
3765 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo) { /* below 1M? */
3766 dev_err(&pdev->dev, "Cyclom-Y/PCI not supported for low "
3767 "addresses on Alpha systems.\n");
3768 retval = -EIO;
3769 goto err_dis;
3770 }
3771#endif
3772 if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Lo) {
3773 dev_err(&pdev->dev, "Cyclades-Z/PCI not supported for low "
3774 "addresses\n");
3775 retval = -EIO;
3776 goto err_dis;
3777 }
3778
3779 if (pci_resource_flags(pdev, 2) & IORESOURCE_IO) {
3780 dev_warn(&pdev->dev, "PCI I/O bit incorrectly set. Ignoring "
3781 "it...\n");
3782 pdev->resource[2].flags &= ~IORESOURCE_IO;
3783 }
3784
3785 retval = pci_request_regions(pdev, "cyclades");
3786 if (retval) {
3787 dev_err(&pdev->dev, "failed to reserve resources\n");
3788 goto err_dis;
3789 }
3790
3791 retval = -EIO;
58936d8d
JS		 3792 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3793 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3137553d 3794 card_name = "Cyclom-Y";
1da177e4 3795
24e6fd4c
JS		 3796 addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
3797 CyPCI_Yctl);
3137553d
JS		 3798 if (addr0 == NULL) {
3799 dev_err(&pdev->dev, "can't remap ctl region\n");
3800 goto err_reg;
58936d8d 3801 }
24e6fd4c
JS		 3802 addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
3803 CyPCI_Ywin);
3137553d
JS		 3804 if (addr2 == NULL) {
3805 dev_err(&pdev->dev, "can't remap base region\n");
3806 goto err_unmap;
58936d8d 3807 }
1da177e4 3808
3137553d
JS		 3809 nchan = CyPORTS_PER_CHIP * cyy_init_card(addr2, 1);
3810 if (nchan == 0) {
21719191
JS		 3811 dev_err(&pdev->dev, "Cyclom-Y PCI host card with no "
3812 "Serial-Modules\n");
c847d47c 3813 goto err_unmap;
58936d8d 3814 }
58936d8d 3815 } else if (device_id == PCI_DEVICE_ID_CYCLOM_Z_Hi) {
3137553d 3816 struct RUNTIME_9060 __iomem *ctl_addr;
21719191 3817
24e6fd4c
JS		 3818 ctl_addr = addr0 = ioremap_nocache(pci_resource_start(pdev, 0),
3819 CyPCI_Zctl);
3137553d
JS		 3820 if (addr0 == NULL) {
3821 dev_err(&pdev->dev, "can't remap ctl region\n");
3822 goto err_reg;
3823 }
58936d8d
JS		 3824
3825 /* Disable interrupts on the PLX before resetting it */
97e87f8e
JS		 3826 cy_writew(&ctl_addr->intr_ctrl_stat,
3827 readw(&ctl_addr->intr_ctrl_stat) & ~0x0900);
58936d8d 3828
054f5b0a 3829 plx_init(pdev, irq, addr0);
02f1175c 3830
101b8159 3831 mailbox = readl(&ctl_addr->mail_box_0);
58936d8d 3832
24e6fd4c
JS		 3833 addr2 = ioremap_nocache(pci_resource_start(pdev, 2),
3834 mailbox == ZE_V1 ? CyPCI_Ze_win : CyPCI_Zwin);
3137553d
JS		 3835 if (addr2 == NULL) {
3836 dev_err(&pdev->dev, "can't remap base region\n");
3837 goto err_unmap;
58936d8d
JS		 3838 }
3839
3840 if (mailbox == ZE_V1) {
3137553d 3841 card_name = "Cyclades-Ze";
58936d8d 3842 } else {
3137553d 3843 card_name = "Cyclades-8Zo";
1da177e4 3844#ifdef CY_PCI_DEBUG
3137553d
JS		 3845 if (mailbox == ZO_V1) {
3846 cy_writel(&ctl_addr->loc_addr_base, WIN_CREG);
3847 dev_info(&pdev->dev, "Cyclades-8Zo/PCI: FPGA "
3848 "id %lx, ver %lx\n", (ulong)(0xff &
3849 readl(&((struct CUSTOM_REG *)addr2)->
3850 fpga_id)), (ulong)(0xff &
3851 readl(&((struct CUSTOM_REG *)addr2)->
3852 fpga_version)));
3853 cy_writel(&ctl_addr->loc_addr_base, WIN_RAM);
3854 } else {
3855 dev_info(&pdev->dev, "Cyclades-Z/PCI: New "
3856 "Cyclades-Z board. FPGA not loaded\n");
3857 }
1da177e4 3858#endif
3137553d
JS		 3859 /* The following clears the firmware id word. This
3860 ensures that the driver will not attempt to talk to
3861 the board until it has been properly initialized.
3862 */
3863 if ((mailbox == ZO_V1) || (mailbox == ZO_V2))
3864 cy_writel(addr2 + ID_ADDRESS, 0L);
58936d8d 3865 }
ace08c3c
JS		 3866
3867 retval = cyz_load_fw(pdev, addr2, addr0, irq);
963118ee 3868 if (retval <= 0)
ace08c3c 3869 goto err_unmap;
963118ee 3870 nchan = retval;
3137553d
JS		 3871 }
3872
3873 if ((cy_next_channel + nchan) > NR_PORTS) {
3874 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
3875 "channels are available. Change NR_PORTS in "
3876 "cyclades.c and recompile kernel.\n");
3877 goto err_unmap;
3878 }
3879 /* fill the next cy_card structure available */
3880 for (card_no = 0; card_no < NR_CARDS; card_no++) {
3881 if (cy_card[card_no].base_addr == NULL)
3882 break;
3883 }
3884 if (card_no == NR_CARDS) { /* no more cy_cards available */
3885 dev_err(&pdev->dev, "Cyclades-8Zo/PCI found, but no "
3886 "more cards can be used. Change NR_CARDS in "
3887 "cyclades.c and recompile kernel.\n");
3888 goto err_unmap;
3889 }
3890
3891 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3892 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3893 /* allocate IRQ */
3894 retval = request_irq(irq, cyy_interrupt,
3895 IRQF_SHARED, "Cyclom-Y", &cy_card[card_no]);
3896 if (retval) {
3897 dev_err(&pdev->dev, "could not allocate IRQ\n");
3898 goto err_unmap;
58936d8d 3899 }
963118ee 3900 cy_card[card_no].num_chips = nchan / CyPORTS_PER_CHIP;
3137553d 3901 } else {
f0eefdc3
JS		 3902 struct FIRM_ID __iomem *firm_id = addr2 + ID_ADDRESS;
3903 struct ZFW_CTRL __iomem *zfw_ctrl;
3904
3905 zfw_ctrl = addr2 + (readl(&firm_id->zfwctrl_addr) & 0xfffff);
3906
101b8159
JS		 3907 cy_card[card_no].hw_ver = mailbox;
3908 cy_card[card_no].num_chips = (unsigned int)-1;
f0eefdc3 3909 cy_card[card_no].board_ctrl = &zfw_ctrl->board_ctrl;
02f1175c 3910#ifdef CONFIG_CYZ_INTR
58936d8d 3911 /* allocate IRQ only if board has an IRQ */
3137553d
JS		 3912 if (irq != 0 && irq != 255) {
3913 retval = request_irq(irq, cyz_interrupt,
58936d8d 3914 IRQF_SHARED, "Cyclades-Z",
3137553d 3915 &cy_card[card_no]);
58936d8d 3916 if (retval) {
21719191 3917 dev_err(&pdev->dev, "could not allocate IRQ\n");
3137553d 3918 goto err_unmap;
02f1175c 3919 }
58936d8d 3920 }
02f1175c 3921#endif /* CONFIG_CYZ_INTR */
3137553d 3922 }
02f1175c 3923
3137553d
JS		 3924 /* set cy_card */
3925 cy_card[card_no].base_addr = addr2;
97e87f8e 3926 cy_card[card_no].ctl_addr.p9050 = addr0;
3137553d
JS		 3927 cy_card[card_no].irq = irq;
3928 cy_card[card_no].bus_index = 1;
3929 cy_card[card_no].first_line = cy_next_channel;
963118ee 3930 cy_card[card_no].nports = nchan;
3137553d
JS		 3931 retval = cy_init_card(&cy_card[card_no]);
3932 if (retval)
3933 goto err_null;
58936d8d 3934
3137553d 3935 pci_set_drvdata(pdev, &cy_card[card_no]);
58936d8d 3936
3137553d
JS		 3937 if (device_id == PCI_DEVICE_ID_CYCLOM_Y_Lo ||
3938 device_id == PCI_DEVICE_ID_CYCLOM_Y_Hi) {
3939 /* enable interrupts in the PCI interface */
3940 plx_ver = readb(addr2 + CyPLX_VER) & 0x0f;
3941 switch (plx_ver) {
3942 case PLX_9050:
3137553d
JS		 3943 cy_writeb(addr0 + 0x4c, 0x43);
3944 break;
3945
3946 case PLX_9060:
3947 case PLX_9080:
3948 default: /* Old boards, use PLX_9060 */
97e87f8e
JS		 3949 {
3950 struct RUNTIME_9060 __iomem *ctl_addr = addr0;
3951 plx_init(pdev, irq, ctl_addr);
3952 cy_writew(&ctl_addr->intr_ctrl_stat,
3953 readw(&ctl_addr->intr_ctrl_stat) | 0x0900);
3137553d
JS		 3954 break;
3955 }
97e87f8e 3956 }
58936d8d
JS		 3957 }
3958
3137553d
JS		 3959 dev_info(&pdev->dev, "%s/PCI #%d found: %d channels starting from "
3960 "port %d.\n", card_name, card_no + 1, nchan, cy_next_channel);
3961 for (i = cy_next_channel; i < cy_next_channel + nchan; i++)
3962 tty_register_device(cy_serial_driver, i, &pdev->dev);
3963 cy_next_channel += nchan;
3964
58936d8d 3965 return 0;
3137553d
JS		 3966err_null:
3967 cy_card[card_no].base_addr = NULL;
3968 free_irq(irq, &cy_card[card_no]);
3969err_unmap:
24e6fd4c 3970 iounmap(addr0);
3137553d 3971 if (addr2)
24e6fd4c 3972 iounmap(addr2);
3137553d
JS		 3973err_reg:
3974 pci_release_regions(pdev);
3975err_dis:
3976 pci_disable_device(pdev);
3977err:
3978 return retval;
58936d8d 3979}
58936d8d 3980
6747cd93 3981static void __devexit cy_pci_remove(struct pci_dev *pdev)
58936d8d 3982{
38d09093 3983 struct cyclades_card *cinfo = pci_get_drvdata(pdev);
f3851e73 3984 unsigned int i;
38d09093 3985
85c93fa9 3986 /* non-Z with old PLX */
2693f485 3987 if (!cy_is_Z(cinfo) && (readb(cinfo->base_addr + CyPLX_VER) & 0x0f) ==
c2ad4c75 3988 PLX_9050)
97e87f8e 3989 cy_writeb(cinfo->ctl_addr.p9050 + 0x4c, 0);
85c93fa9
JS		 3990 else
3991#ifndef CONFIG_CYZ_INTR
2693f485 3992 if (!cy_is_Z(cinfo))
85c93fa9 3993#endif
97e87f8e
JS		 3994 cy_writew(&cinfo->ctl_addr.p9060->intr_ctrl_stat,
3995 readw(&cinfo->ctl_addr.p9060->intr_ctrl_stat) &
3996 ~0x0900);
85c93fa9 3997
24e6fd4c 3998 iounmap(cinfo->base_addr);
97e87f8e
JS		 3999 if (cinfo->ctl_addr.p9050)
4000 iounmap(cinfo->ctl_addr.p9050);
38d09093
JS		 4001 if (cinfo->irq
4002#ifndef CONFIG_CYZ_INTR
2693f485 4003 && !cy_is_Z(cinfo)
38d09093
JS		 4004#endif /* CONFIG_CYZ_INTR */
4005 )
4006 free_irq(cinfo->irq, cinfo);
4007 pci_release_regions(pdev);
4008
4009 cinfo->base_addr = NULL;
6ad1ccc1
JS		 4010 for (i = cinfo->first_line; i < cinfo->first_line +
4011 cinfo->nports; i++)
4012 tty_unregister_device(cy_serial_driver, i);
dd025c0c
JS		 4013 cinfo->nports = 0;
4014 kfree(cinfo->ports);
38d09093
JS		 4015}
4016
6747cd93
JS		 4017static struct pci_driver cy_pci_driver = {
4018 .name = "cyclades",
4019 .id_table = cy_pci_dev_id,
4020 .probe = cy_pci_probe,
4021 .remove = __devexit_p(cy_pci_remove)
4022};
4023#endif
4024
444697d6 4025static int cyclades_proc_show(struct seq_file *m, void *v)
1da177e4 4026{
02f1175c 4027 struct cyclades_port *info;
dd025c0c 4028 unsigned int i, j;
02f1175c
JS		 4029 __u32 cur_jifs = jiffies;
4030
444697d6 4031 seq_puts(m, "Dev TimeOpen BytesOut IdleOut BytesIn "
02f1175c
JS		 4032 "IdleIn Overruns Ldisc\n");
4033
02f1175c 4034 /* Output one line for each known port */
dd025c0c
JS		 4035 for (i = 0; i < NR_CARDS; i++)
4036 for (j = 0; j < cy_card[i].nports; j++) {
4037 info = &cy_card[i].ports[j];
4038
d13549f8
JS		 4039 if (info->port.count) {
4040 /* XXX is the ldisc num worth this? */
4041 struct tty_struct *tty;
4042 struct tty_ldisc *ld;
4043 int num = 0;
4044 tty = tty_port_tty_get(&info->port);
4045 if (tty) {
4046 ld = tty_ldisc_ref(tty);
4047 if (ld) {
4048 num = ld->ops->num;
4049 tty_ldisc_deref(ld);
4050 }
4051 tty_kref_put(tty);
4052 }
444697d6 4053 seq_printf(m, "%3d %8lu %10lu %8lu "
d13549f8 4054 "%10lu %8lu %9lu %6d\n", info->line,
dd025c0c
JS		 4055 (cur_jifs - info->idle_stats.in_use) /
4056 HZ, info->idle_stats.xmit_bytes,
4057 (cur_jifs - info->idle_stats.xmit_idle)/
4058 HZ, info->idle_stats.recv_bytes,
4059 (cur_jifs - info->idle_stats.recv_idle)/
4060 HZ, info->idle_stats.overruns,
d13549f8
JS		 4061 num);
4062 } else
444697d6 4063 seq_printf(m, "%3d %8lu %10lu %8lu "
dd025c0c
JS		 4064 "%10lu %8lu %9lu %6ld\n",
4065 info->line, 0L, 0L, 0L, 0L, 0L, 0L, 0L);
02f1175c 4066 }
444697d6
AD		 4067 return 0;
4068}
4069
4070static int cyclades_proc_open(struct inode *inode, struct file *file)
4071{
4072 return single_open(file, cyclades_proc_show, NULL);
1da177e4
LT		 4073}
4074
444697d6
AD		 4075static const struct file_operations cyclades_proc_fops = {
4076 .owner = THIS_MODULE,
4077 .open = cyclades_proc_open,
4078 .read = seq_read,
4079 .llseek = seq_lseek,
4080 .release = single_release,
4081};
4082
1da177e4
LT		 4083/* The serial driver boot-time initialization code!
4084 Hardware I/O ports are mapped to character special devices on a
4085 first found, first allocated manner. That is, this code searches
4086 for Cyclom cards in the system. As each is found, it is probed
4087 to discover how many chips (and thus how many ports) are present.
4088 These ports are mapped to the tty ports 32 and upward in monotonic
4089 fashion. If an 8-port card is replaced with a 16-port card, the
4090 port mapping on a following card will shift.
4091
4092 This approach is different from what is used in the other serial
4093 device driver because the Cyclom is more properly a multiplexer,
4094 not just an aggregation of serial ports on one card.
4095
4096 If there are more cards with more ports than have been
4097 statically allocated above, a warning is printed and the
4098 extra ports are ignored.
4099 */
4100
b68e31d0 4101static const struct tty_operations cy_ops = {
02f1175c
JS		 4102 .open = cy_open,
4103 .close = cy_close,
4104 .write = cy_write,
4105 .put_char = cy_put_char,
4106 .flush_chars = cy_flush_chars,
4107 .write_room = cy_write_room,
4108 .chars_in_buffer = cy_chars_in_buffer,
4109 .flush_buffer = cy_flush_buffer,
4110 .ioctl = cy_ioctl,
4111 .throttle = cy_throttle,
4112 .unthrottle = cy_unthrottle,
4113 .set_termios = cy_set_termios,
4114 .stop = cy_stop,
4115 .start = cy_start,
4116 .hangup = cy_hangup,
4117 .break_ctl = cy_break,
4118 .wait_until_sent = cy_wait_until_sent,
02f1175c
JS		 4119 .tiocmget = cy_tiocmget,
4120 .tiocmset = cy_tiocmset,
444697d6 4121 .proc_fops = &cyclades_proc_fops,
1da177e4
LT		 4122};
4123
02f1175c 4124static int __init cy_init(void)
1da177e4 4125{
dd025c0c 4126 unsigned int nboards;
9dacf3b2 4127 int retval = -ENOMEM;
02f1175c
JS		 4128
4129 cy_serial_driver = alloc_tty_driver(NR_PORTS);
4130 if (!cy_serial_driver)
9dacf3b2 4131 goto err;
21719191
JS		 4132
4133 printk(KERN_INFO "Cyclades driver " CY_VERSION " (built %s %s)\n",
4134 __DATE__, __TIME__);
02f1175c
JS		 4135
4136 /* Initialize the tty_driver structure */
4137
4138 cy_serial_driver->owner = THIS_MODULE;
4139 cy_serial_driver->driver_name = "cyclades";
4140 cy_serial_driver->name = "ttyC";
4141 cy_serial_driver->major = CYCLADES_MAJOR;
4142 cy_serial_driver->minor_start = 0;
4143 cy_serial_driver->type = TTY_DRIVER_TYPE_SERIAL;
4144 cy_serial_driver->subtype = SERIAL_TYPE_NORMAL;
4145 cy_serial_driver->init_termios = tty_std_termios;
4146 cy_serial_driver->init_termios.c_cflag =
4147 B9600 | CS8 | CREAD | HUPCL | CLOCAL;
6ad1ccc1 4148 cy_serial_driver->flags = TTY_DRIVER_REAL_RAW | TTY_DRIVER_DYNAMIC_DEV;
02f1175c
JS		 4149 tty_set_operations(cy_serial_driver, &cy_ops);
4150
9dacf3b2
JS		 4151 retval = tty_register_driver(cy_serial_driver);
4152 if (retval) {
4153 printk(KERN_ERR "Couldn't register Cyclades serial driver\n");
4154 goto err_frtty;
4155 }
02f1175c 4156
02f1175c
JS		 4157 /* the code below is responsible to find the boards. Each different
4158 type of board has its own detection routine. If a board is found,
4159 the next cy_card structure available is set by the detection
4160 routine. These functions are responsible for checking the
4161 availability of cy_card and cy_port data structures and updating
4162 the cy_next_channel. */
4163
4164 /* look for isa boards */
14a55a67 4165 nboards = cy_detect_isa();
02f1175c 4166
6747cd93 4167#ifdef CONFIG_PCI
02f1175c 4168 /* look for pci boards */
6747cd93 4169 retval = pci_register_driver(&cy_pci_driver);
d941ea7d
JJ		 4170 if (retval && !nboards) {
4171 tty_unregister_driver(cy_serial_driver);
4172 goto err_frtty;
4173 }
6747cd93 4174#endif
9dacf3b2
JS		 4175
4176 return 0;
9dacf3b2
JS		 4177err_frtty:
4178 put_tty_driver(cy_serial_driver);
4179err:
4180 return retval;
02f1175c 4181} /* cy_init */
1da177e4 4182
02f1175c 4183static void __exit cy_cleanup_module(void)
1da177e4 4184{
dd025c0c 4185 struct cyclades_card *card;
65f76a82 4186 unsigned int i, e1;
1da177e4
LT		 4187
4188#ifndef CONFIG_CYZ_INTR
b7050906 4189 del_timer_sync(&cyz_timerlist);
1da177e4
LT		 4190#endif /* CONFIG_CYZ_INTR */
4191
15ed6cc0
AC		 4192 e1 = tty_unregister_driver(cy_serial_driver);
4193 if (e1)
21719191
JS		 4194 printk(KERN_ERR "failed to unregister Cyclades serial "
4195 "driver(%d)\n", e1);
1da177e4 4196
6747cd93
JS		 4197#ifdef CONFIG_PCI
4198 pci_unregister_driver(&cy_pci_driver);
4199#endif
4200
02f1175c 4201 for (i = 0; i < NR_CARDS; i++) {
dd025c0c
JS		 4202 card = &cy_card[i];
4203 if (card->base_addr) {
85c93fa9 4204 /* clear interrupt */
dd025c0c
JS		 4205 cy_writeb(card->base_addr + Cy_ClrIntr, 0);
4206 iounmap(card->base_addr);
97e87f8e
JS		 4207 if (card->ctl_addr.p9050)
4208 iounmap(card->ctl_addr.p9050);
dd025c0c 4209 if (card->irq
1da177e4 4210#ifndef CONFIG_CYZ_INTR
2693f485 4211 && !cy_is_Z(card)
1da177e4 4212#endif /* CONFIG_CYZ_INTR */
02f1175c 4213 )
dd025c0c 4214 free_irq(card->irq, card);
65f76a82 4215 for (e1 = card->first_line; e1 < card->first_line +
dd025c0c 4216 card->nports; e1++)
6ad1ccc1 4217 tty_unregister_device(cy_serial_driver, e1);
dd025c0c 4218 kfree(card->ports);
02f1175c
JS		 4219 }
4220 }
f2462bfe
JS		 4221
4222 put_tty_driver(cy_serial_driver);
1da177e4
LT		 4223} /* cy_cleanup_module */
4224
4225module_init(cy_init);
4226module_exit(cy_cleanup_module);
4227
4228MODULE_LICENSE("GPL");
c8e1693a 4229MODULE_VERSION(CY_VERSION);
9f56fad7 4230MODULE_ALIAS_CHARDEV_MAJOR(CYCLADES_MAJOR);
Linux kernel - Deliverables
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