Loading...
1/*
2 * icom.c
3 *
4 * Copyright (C) 2001 IBM Corporation. All rights reserved.
5 *
6 * Serial device driver.
7 *
8 * Based on code from serial.c
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25#include <linux/module.h>
26#include <linux/kernel.h>
27#include <linux/errno.h>
28#include <linux/signal.h>
29#include <linux/timer.h>
30#include <linux/interrupt.h>
31#include <linux/tty.h>
32#include <linux/termios.h>
33#include <linux/fs.h>
34#include <linux/tty_flip.h>
35#include <linux/serial.h>
36#include <linux/serial_reg.h>
37#include <linux/major.h>
38#include <linux/string.h>
39#include <linux/fcntl.h>
40#include <linux/ptrace.h>
41#include <linux/ioport.h>
42#include <linux/mm.h>
43#include <linux/slab.h>
44#include <linux/init.h>
45#include <linux/delay.h>
46#include <linux/pci.h>
47#include <linux/vmalloc.h>
48#include <linux/smp.h>
49#include <linux/spinlock.h>
50#include <linux/kref.h>
51#include <linux/firmware.h>
52#include <linux/bitops.h>
53
54#include <asm/io.h>
55#include <asm/irq.h>
56#include <asm/uaccess.h>
57
58#include "icom.h"
59
60/*#define ICOM_TRACE enable port trace capabilities */
61
62#define ICOM_DRIVER_NAME "icom"
63#define ICOM_VERSION_STR "1.3.1"
64#define NR_PORTS 128
65#define ICOM_PORT ((struct icom_port *)port)
66#define to_icom_adapter(d) container_of(d, struct icom_adapter, kref)
67
68static const struct pci_device_id icom_pci_table[] = {
69 {
70 .vendor = PCI_VENDOR_ID_IBM,
71 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_1,
72 .subvendor = PCI_ANY_ID,
73 .subdevice = PCI_ANY_ID,
74 .driver_data = ADAPTER_V1,
75 },
76 {
77 .vendor = PCI_VENDOR_ID_IBM,
78 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
79 .subvendor = PCI_VENDOR_ID_IBM,
80 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_TWO_PORTS_RVX,
81 .driver_data = ADAPTER_V2,
82 },
83 {
84 .vendor = PCI_VENDOR_ID_IBM,
85 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
86 .subvendor = PCI_VENDOR_ID_IBM,
87 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM,
88 .driver_data = ADAPTER_V2,
89 },
90 {
91 .vendor = PCI_VENDOR_ID_IBM,
92 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
93 .subvendor = PCI_VENDOR_ID_IBM,
94 .subdevice = PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL,
95 .driver_data = ADAPTER_V2,
96 },
97 {
98 .vendor = PCI_VENDOR_ID_IBM,
99 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
100 .subvendor = PCI_VENDOR_ID_IBM,
101 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM_PCIE,
102 .driver_data = ADAPTER_V2,
103 },
104 {}
105};
106
107static struct lookup_proc_table start_proc[4] = {
108 {NULL, ICOM_CONTROL_START_A},
109 {NULL, ICOM_CONTROL_START_B},
110 {NULL, ICOM_CONTROL_START_C},
111 {NULL, ICOM_CONTROL_START_D}
112};
113
114
115static struct lookup_proc_table stop_proc[4] = {
116 {NULL, ICOM_CONTROL_STOP_A},
117 {NULL, ICOM_CONTROL_STOP_B},
118 {NULL, ICOM_CONTROL_STOP_C},
119 {NULL, ICOM_CONTROL_STOP_D}
120};
121
122static struct lookup_int_table int_mask_tbl[4] = {
123 {NULL, ICOM_INT_MASK_PRC_A},
124 {NULL, ICOM_INT_MASK_PRC_B},
125 {NULL, ICOM_INT_MASK_PRC_C},
126 {NULL, ICOM_INT_MASK_PRC_D},
127};
128
129
130MODULE_DEVICE_TABLE(pci, icom_pci_table);
131
132static LIST_HEAD(icom_adapter_head);
133
134/* spinlock for adapter initialization and changing adapter operations */
135static spinlock_t icom_lock;
136
137#ifdef ICOM_TRACE
138static inline void trace(struct icom_port *icom_port, char *trace_pt,
139 unsigned long trace_data)
140{
141 dev_info(&icom_port->adapter->pci_dev->dev, ":%d:%s - %lx\n",
142 icom_port->port, trace_pt, trace_data);
143}
144#else
145static inline void trace(struct icom_port *icom_port, char *trace_pt, unsigned long trace_data) {};
146#endif
147static void icom_kref_release(struct kref *kref);
148
149static void free_port_memory(struct icom_port *icom_port)
150{
151 struct pci_dev *dev = icom_port->adapter->pci_dev;
152
153 trace(icom_port, "RET_PORT_MEM", 0);
154 if (icom_port->recv_buf) {
155 pci_free_consistent(dev, 4096, icom_port->recv_buf,
156 icom_port->recv_buf_pci);
157 icom_port->recv_buf = NULL;
158 }
159 if (icom_port->xmit_buf) {
160 pci_free_consistent(dev, 4096, icom_port->xmit_buf,
161 icom_port->xmit_buf_pci);
162 icom_port->xmit_buf = NULL;
163 }
164 if (icom_port->statStg) {
165 pci_free_consistent(dev, 4096, icom_port->statStg,
166 icom_port->statStg_pci);
167 icom_port->statStg = NULL;
168 }
169
170 if (icom_port->xmitRestart) {
171 pci_free_consistent(dev, 4096, icom_port->xmitRestart,
172 icom_port->xmitRestart_pci);
173 icom_port->xmitRestart = NULL;
174 }
175}
176
177static int get_port_memory(struct icom_port *icom_port)
178{
179 int index;
180 unsigned long stgAddr;
181 unsigned long startStgAddr;
182 unsigned long offset;
183 struct pci_dev *dev = icom_port->adapter->pci_dev;
184
185 icom_port->xmit_buf =
186 pci_alloc_consistent(dev, 4096, &icom_port->xmit_buf_pci);
187 if (!icom_port->xmit_buf) {
188 dev_err(&dev->dev, "Can not allocate Transmit buffer\n");
189 return -ENOMEM;
190 }
191
192 trace(icom_port, "GET_PORT_MEM",
193 (unsigned long) icom_port->xmit_buf);
194
195 icom_port->recv_buf =
196 pci_alloc_consistent(dev, 4096, &icom_port->recv_buf_pci);
197 if (!icom_port->recv_buf) {
198 dev_err(&dev->dev, "Can not allocate Receive buffer\n");
199 free_port_memory(icom_port);
200 return -ENOMEM;
201 }
202 trace(icom_port, "GET_PORT_MEM",
203 (unsigned long) icom_port->recv_buf);
204
205 icom_port->statStg =
206 pci_alloc_consistent(dev, 4096, &icom_port->statStg_pci);
207 if (!icom_port->statStg) {
208 dev_err(&dev->dev, "Can not allocate Status buffer\n");
209 free_port_memory(icom_port);
210 return -ENOMEM;
211 }
212 trace(icom_port, "GET_PORT_MEM",
213 (unsigned long) icom_port->statStg);
214
215 icom_port->xmitRestart =
216 pci_alloc_consistent(dev, 4096, &icom_port->xmitRestart_pci);
217 if (!icom_port->xmitRestart) {
218 dev_err(&dev->dev,
219 "Can not allocate xmit Restart buffer\n");
220 free_port_memory(icom_port);
221 return -ENOMEM;
222 }
223
224 memset(icom_port->statStg, 0, 4096);
225
226 /* FODs: Frame Out Descriptor Queue, this is a FIFO queue that
227 indicates that frames are to be transmitted
228 */
229
230 stgAddr = (unsigned long) icom_port->statStg;
231 for (index = 0; index < NUM_XBUFFS; index++) {
232 trace(icom_port, "FOD_ADDR", stgAddr);
233 stgAddr = stgAddr + sizeof(icom_port->statStg->xmit[0]);
234 if (index < (NUM_XBUFFS - 1)) {
235 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
236 icom_port->statStg->xmit[index].leLengthASD =
237 (unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
238 trace(icom_port, "FOD_ADDR", stgAddr);
239 trace(icom_port, "FOD_XBUFF",
240 (unsigned long) icom_port->xmit_buf);
241 icom_port->statStg->xmit[index].leBuffer =
242 cpu_to_le32(icom_port->xmit_buf_pci);
243 } else if (index == (NUM_XBUFFS - 1)) {
244 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
245 icom_port->statStg->xmit[index].leLengthASD =
246 (unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
247 trace(icom_port, "FOD_XBUFF",
248 (unsigned long) icom_port->xmit_buf);
249 icom_port->statStg->xmit[index].leBuffer =
250 cpu_to_le32(icom_port->xmit_buf_pci);
251 } else {
252 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
253 }
254 }
255 /* FIDs */
256 startStgAddr = stgAddr;
257
258 /* fill in every entry, even if no buffer */
259 for (index = 0; index < NUM_RBUFFS; index++) {
260 trace(icom_port, "FID_ADDR", stgAddr);
261 stgAddr = stgAddr + sizeof(icom_port->statStg->rcv[0]);
262 icom_port->statStg->rcv[index].leLength = 0;
263 icom_port->statStg->rcv[index].WorkingLength =
264 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
265 if (index < (NUM_RBUFFS - 1) ) {
266 offset = stgAddr - (unsigned long) icom_port->statStg;
267 icom_port->statStg->rcv[index].leNext =
268 cpu_to_le32(icom_port-> statStg_pci + offset);
269 trace(icom_port, "FID_RBUFF",
270 (unsigned long) icom_port->recv_buf);
271 icom_port->statStg->rcv[index].leBuffer =
272 cpu_to_le32(icom_port->recv_buf_pci);
273 } else if (index == (NUM_RBUFFS -1) ) {
274 offset = startStgAddr - (unsigned long) icom_port->statStg;
275 icom_port->statStg->rcv[index].leNext =
276 cpu_to_le32(icom_port-> statStg_pci + offset);
277 trace(icom_port, "FID_RBUFF",
278 (unsigned long) icom_port->recv_buf + 2048);
279 icom_port->statStg->rcv[index].leBuffer =
280 cpu_to_le32(icom_port->recv_buf_pci + 2048);
281 } else {
282 icom_port->statStg->rcv[index].leNext = 0;
283 icom_port->statStg->rcv[index].leBuffer = 0;
284 }
285 }
286
287 return 0;
288}
289
290static void stop_processor(struct icom_port *icom_port)
291{
292 unsigned long temp;
293 unsigned long flags;
294 int port;
295
296 spin_lock_irqsave(&icom_lock, flags);
297
298 port = icom_port->port;
299 if (port >= ARRAY_SIZE(stop_proc)) {
300 dev_err(&icom_port->adapter->pci_dev->dev,
301 "Invalid port assignment\n");
302 goto unlock;
303 }
304
305 if (port == 0 || port == 1)
306 stop_proc[port].global_control_reg = &icom_port->global_reg->control;
307 else
308 stop_proc[port].global_control_reg = &icom_port->global_reg->control_2;
309
310 temp = readl(stop_proc[port].global_control_reg);
311 temp = (temp & ~start_proc[port].processor_id) | stop_proc[port].processor_id;
312 writel(temp, stop_proc[port].global_control_reg);
313
314 /* write flush */
315 readl(stop_proc[port].global_control_reg);
316
317unlock:
318 spin_unlock_irqrestore(&icom_lock, flags);
319}
320
321static void start_processor(struct icom_port *icom_port)
322{
323 unsigned long temp;
324 unsigned long flags;
325 int port;
326
327 spin_lock_irqsave(&icom_lock, flags);
328
329 port = icom_port->port;
330 if (port >= ARRAY_SIZE(start_proc)) {
331 dev_err(&icom_port->adapter->pci_dev->dev,
332 "Invalid port assignment\n");
333 goto unlock;
334 }
335
336 if (port == 0 || port == 1)
337 start_proc[port].global_control_reg = &icom_port->global_reg->control;
338 else
339 start_proc[port].global_control_reg = &icom_port->global_reg->control_2;
340
341 temp = readl(start_proc[port].global_control_reg);
342 temp = (temp & ~stop_proc[port].processor_id) | start_proc[port].processor_id;
343 writel(temp, start_proc[port].global_control_reg);
344
345 /* write flush */
346 readl(start_proc[port].global_control_reg);
347
348unlock:
349 spin_unlock_irqrestore(&icom_lock, flags);
350}
351
352static void load_code(struct icom_port *icom_port)
353{
354 const struct firmware *fw;
355 char __iomem *iram_ptr;
356 int index;
357 int status = 0;
358 void __iomem *dram_ptr = icom_port->dram;
359 dma_addr_t temp_pci;
360 unsigned char *new_page = NULL;
361 unsigned char cable_id = NO_CABLE;
362 struct pci_dev *dev = icom_port->adapter->pci_dev;
363
364 /* Clear out any pending interrupts */
365 writew(0x3FFF, icom_port->int_reg);
366
367 trace(icom_port, "CLEAR_INTERRUPTS", 0);
368
369 /* Stop processor */
370 stop_processor(icom_port);
371
372 /* Zero out DRAM */
373 memset_io(dram_ptr, 0, 512);
374
375 /* Load Call Setup into Adapter */
376 if (request_firmware(&fw, "icom_call_setup.bin", &dev->dev) < 0) {
377 dev_err(&dev->dev,"Unable to load icom_call_setup.bin firmware image\n");
378 status = -1;
379 goto load_code_exit;
380 }
381
382 if (fw->size > ICOM_DCE_IRAM_OFFSET) {
383 dev_err(&dev->dev, "Invalid firmware image for icom_call_setup.bin found.\n");
384 release_firmware(fw);
385 status = -1;
386 goto load_code_exit;
387 }
388
389 iram_ptr = (char __iomem *)icom_port->dram + ICOM_IRAM_OFFSET;
390 for (index = 0; index < fw->size; index++)
391 writeb(fw->data[index], &iram_ptr[index]);
392
393 release_firmware(fw);
394
395 /* Load Resident DCE portion of Adapter */
396 if (request_firmware(&fw, "icom_res_dce.bin", &dev->dev) < 0) {
397 dev_err(&dev->dev,"Unable to load icom_res_dce.bin firmware image\n");
398 status = -1;
399 goto load_code_exit;
400 }
401
402 if (fw->size > ICOM_IRAM_SIZE) {
403 dev_err(&dev->dev, "Invalid firmware image for icom_res_dce.bin found.\n");
404 release_firmware(fw);
405 status = -1;
406 goto load_code_exit;
407 }
408
409 iram_ptr = (char __iomem *) icom_port->dram + ICOM_IRAM_OFFSET;
410 for (index = ICOM_DCE_IRAM_OFFSET; index < fw->size; index++)
411 writeb(fw->data[index], &iram_ptr[index]);
412
413 release_firmware(fw);
414
415 /* Set Hardware level */
416 if (icom_port->adapter->version == ADAPTER_V2)
417 writeb(V2_HARDWARE, &(icom_port->dram->misc_flags));
418
419 /* Start the processor in Adapter */
420 start_processor(icom_port);
421
422 writeb((HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL),
423 &(icom_port->dram->HDLCConfigReg));
424 writeb(0x04, &(icom_port->dram->FlagFillIdleTimer)); /* 0.5 seconds */
425 writeb(0x00, &(icom_port->dram->CmdReg));
426 writeb(0x10, &(icom_port->dram->async_config3));
427 writeb((ICOM_ACFG_DRIVE1 | ICOM_ACFG_NO_PARITY | ICOM_ACFG_8BPC |
428 ICOM_ACFG_1STOP_BIT), &(icom_port->dram->async_config2));
429
430 /*Set up data in icom DRAM to indicate where personality
431 *code is located and its length.
432 */
433 new_page = pci_alloc_consistent(dev, 4096, &temp_pci);
434
435 if (!new_page) {
436 dev_err(&dev->dev, "Can not allocate DMA buffer\n");
437 status = -1;
438 goto load_code_exit;
439 }
440
441 if (request_firmware(&fw, "icom_asc.bin", &dev->dev) < 0) {
442 dev_err(&dev->dev,"Unable to load icom_asc.bin firmware image\n");
443 status = -1;
444 goto load_code_exit;
445 }
446
447 if (fw->size > ICOM_DCE_IRAM_OFFSET) {
448 dev_err(&dev->dev, "Invalid firmware image for icom_asc.bin found.\n");
449 release_firmware(fw);
450 status = -1;
451 goto load_code_exit;
452 }
453
454 for (index = 0; index < fw->size; index++)
455 new_page[index] = fw->data[index];
456
457 writeb((char) ((fw->size + 16)/16), &icom_port->dram->mac_length);
458 writel(temp_pci, &icom_port->dram->mac_load_addr);
459
460 release_firmware(fw);
461
462 /*Setting the syncReg to 0x80 causes adapter to start downloading
463 the personality code into adapter instruction RAM.
464 Once code is loaded, it will begin executing and, based on
465 information provided above, will start DMAing data from
466 shared memory to adapter DRAM.
467 */
468 /* the wait loop below verifies this write operation has been done
469 and processed
470 */
471 writeb(START_DOWNLOAD, &icom_port->dram->sync);
472
473 /* Wait max 1 Sec for data download and processor to start */
474 for (index = 0; index < 10; index++) {
475 msleep(100);
476 if (readb(&icom_port->dram->misc_flags) & ICOM_HDW_ACTIVE)
477 break;
478 }
479
480 if (index == 10)
481 status = -1;
482
483 /*
484 * check Cable ID
485 */
486 cable_id = readb(&icom_port->dram->cable_id);
487
488 if (cable_id & ICOM_CABLE_ID_VALID) {
489 /* Get cable ID into the lower 4 bits (standard form) */
490 cable_id = (cable_id & ICOM_CABLE_ID_MASK) >> 4;
491 icom_port->cable_id = cable_id;
492 } else {
493 dev_err(&dev->dev,"Invalid or no cable attached\n");
494 icom_port->cable_id = NO_CABLE;
495 }
496
497 load_code_exit:
498
499 if (status != 0) {
500 /* Clear out any pending interrupts */
501 writew(0x3FFF, icom_port->int_reg);
502
503 /* Turn off port */
504 writeb(ICOM_DISABLE, &(icom_port->dram->disable));
505
506 /* Stop processor */
507 stop_processor(icom_port);
508
509 dev_err(&icom_port->adapter->pci_dev->dev,"Port not operational\n");
510 }
511
512 if (new_page != NULL)
513 pci_free_consistent(dev, 4096, new_page, temp_pci);
514}
515
516static int startup(struct icom_port *icom_port)
517{
518 unsigned long temp;
519 unsigned char cable_id, raw_cable_id;
520 unsigned long flags;
521 int port;
522
523 trace(icom_port, "STARTUP", 0);
524
525 if (!icom_port->dram) {
526 /* should NEVER be NULL */
527 dev_err(&icom_port->adapter->pci_dev->dev,
528 "Unusable Port, port configuration missing\n");
529 return -ENODEV;
530 }
531
532 /*
533 * check Cable ID
534 */
535 raw_cable_id = readb(&icom_port->dram->cable_id);
536 trace(icom_port, "CABLE_ID", raw_cable_id);
537
538 /* Get cable ID into the lower 4 bits (standard form) */
539 cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
540
541 /* Check for valid Cable ID */
542 if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
543 (cable_id != icom_port->cable_id)) {
544
545 /* reload adapter code, pick up any potential changes in cable id */
546 load_code(icom_port);
547
548 /* still no sign of cable, error out */
549 raw_cable_id = readb(&icom_port->dram->cable_id);
550 cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
551 if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
552 (icom_port->cable_id == NO_CABLE))
553 return -EIO;
554 }
555
556 /*
557 * Finally, clear and enable interrupts
558 */
559 spin_lock_irqsave(&icom_lock, flags);
560 port = icom_port->port;
561 if (port >= ARRAY_SIZE(int_mask_tbl)) {
562 dev_err(&icom_port->adapter->pci_dev->dev,
563 "Invalid port assignment\n");
564 goto unlock;
565 }
566
567 if (port == 0 || port == 1)
568 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
569 else
570 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
571
572 if (port == 0 || port == 2)
573 writew(0x00FF, icom_port->int_reg);
574 else
575 writew(0x3F00, icom_port->int_reg);
576
577 temp = readl(int_mask_tbl[port].global_int_mask);
578 writel(temp & ~int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
579
580 /* write flush */
581 readl(int_mask_tbl[port].global_int_mask);
582
583unlock:
584 spin_unlock_irqrestore(&icom_lock, flags);
585 return 0;
586}
587
588static void shutdown(struct icom_port *icom_port)
589{
590 unsigned long temp;
591 unsigned char cmdReg;
592 unsigned long flags;
593 int port;
594
595 spin_lock_irqsave(&icom_lock, flags);
596 trace(icom_port, "SHUTDOWN", 0);
597
598 /*
599 * disable all interrupts
600 */
601 port = icom_port->port;
602 if (port >= ARRAY_SIZE(int_mask_tbl)) {
603 dev_err(&icom_port->adapter->pci_dev->dev,
604 "Invalid port assignment\n");
605 goto unlock;
606 }
607 if (port == 0 || port == 1)
608 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
609 else
610 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
611
612 temp = readl(int_mask_tbl[port].global_int_mask);
613 writel(temp | int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
614
615 /* write flush */
616 readl(int_mask_tbl[port].global_int_mask);
617
618unlock:
619 spin_unlock_irqrestore(&icom_lock, flags);
620
621 /*
622 * disable break condition
623 */
624 cmdReg = readb(&icom_port->dram->CmdReg);
625 if (cmdReg & CMD_SND_BREAK) {
626 writeb(cmdReg & ~CMD_SND_BREAK, &icom_port->dram->CmdReg);
627 }
628}
629
630static int icom_write(struct uart_port *port)
631{
632 unsigned long data_count;
633 unsigned char cmdReg;
634 unsigned long offset;
635 int temp_tail = port->state->xmit.tail;
636
637 trace(ICOM_PORT, "WRITE", 0);
638
639 if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
640 SA_FLAGS_READY_TO_XMIT) {
641 trace(ICOM_PORT, "WRITE_FULL", 0);
642 return 0;
643 }
644
645 data_count = 0;
646 while ((port->state->xmit.head != temp_tail) &&
647 (data_count <= XMIT_BUFF_SZ)) {
648
649 ICOM_PORT->xmit_buf[data_count++] =
650 port->state->xmit.buf[temp_tail];
651
652 temp_tail++;
653 temp_tail &= (UART_XMIT_SIZE - 1);
654 }
655
656 if (data_count) {
657 ICOM_PORT->statStg->xmit[0].flags =
658 cpu_to_le16(SA_FLAGS_READY_TO_XMIT);
659 ICOM_PORT->statStg->xmit[0].leLength =
660 cpu_to_le16(data_count);
661 offset =
662 (unsigned long) &ICOM_PORT->statStg->xmit[0] -
663 (unsigned long) ICOM_PORT->statStg;
664 *ICOM_PORT->xmitRestart =
665 cpu_to_le32(ICOM_PORT->statStg_pci + offset);
666 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
667 writeb(cmdReg | CMD_XMIT_RCV_ENABLE,
668 &ICOM_PORT->dram->CmdReg);
669 writeb(START_XMIT, &ICOM_PORT->dram->StartXmitCmd);
670 trace(ICOM_PORT, "WRITE_START", data_count);
671 /* write flush */
672 readb(&ICOM_PORT->dram->StartXmitCmd);
673 }
674
675 return data_count;
676}
677
678static inline void check_modem_status(struct icom_port *icom_port)
679{
680 static char old_status = 0;
681 char delta_status;
682 unsigned char status;
683
684 spin_lock(&icom_port->uart_port.lock);
685
686 /*modem input register */
687 status = readb(&icom_port->dram->isr);
688 trace(icom_port, "CHECK_MODEM", status);
689 delta_status = status ^ old_status;
690 if (delta_status) {
691 if (delta_status & ICOM_RI)
692 icom_port->uart_port.icount.rng++;
693 if (delta_status & ICOM_DSR)
694 icom_port->uart_port.icount.dsr++;
695 if (delta_status & ICOM_DCD)
696 uart_handle_dcd_change(&icom_port->uart_port,
697 delta_status & ICOM_DCD);
698 if (delta_status & ICOM_CTS)
699 uart_handle_cts_change(&icom_port->uart_port,
700 delta_status & ICOM_CTS);
701
702 wake_up_interruptible(&icom_port->uart_port.state->
703 port.delta_msr_wait);
704 old_status = status;
705 }
706 spin_unlock(&icom_port->uart_port.lock);
707}
708
709static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port)
710{
711 unsigned short int count;
712 int i;
713
714 if (port_int_reg & (INT_XMIT_COMPLETED)) {
715 trace(icom_port, "XMIT_COMPLETE", 0);
716
717 /* clear buffer in use bit */
718 icom_port->statStg->xmit[0].flags &=
719 cpu_to_le16(~SA_FLAGS_READY_TO_XMIT);
720
721 count = (unsigned short int)
722 cpu_to_le16(icom_port->statStg->xmit[0].leLength);
723 icom_port->uart_port.icount.tx += count;
724
725 for (i=0; i<count &&
726 !uart_circ_empty(&icom_port->uart_port.state->xmit); i++) {
727
728 icom_port->uart_port.state->xmit.tail++;
729 icom_port->uart_port.state->xmit.tail &=
730 (UART_XMIT_SIZE - 1);
731 }
732
733 if (!icom_write(&icom_port->uart_port))
734 /* activate write queue */
735 uart_write_wakeup(&icom_port->uart_port);
736 } else
737 trace(icom_port, "XMIT_DISABLED", 0);
738}
739
740static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
741{
742 short int count, rcv_buff;
743 struct tty_port *port = &icom_port->uart_port.state->port;
744 unsigned short int status;
745 struct uart_icount *icount;
746 unsigned long offset;
747 unsigned char flag;
748
749 trace(icom_port, "RCV_COMPLETE", 0);
750 rcv_buff = icom_port->next_rcv;
751
752 status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
753 while (status & SA_FL_RCV_DONE) {
754 int first = -1;
755
756 trace(icom_port, "FID_STATUS", status);
757 count = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].leLength);
758
759 trace(icom_port, "RCV_COUNT", count);
760
761 trace(icom_port, "REAL_COUNT", count);
762
763 offset =
764 cpu_to_le32(icom_port->statStg->rcv[rcv_buff].leBuffer) -
765 icom_port->recv_buf_pci;
766
767 /* Block copy all but the last byte as this may have status */
768 if (count > 0) {
769 first = icom_port->recv_buf[offset];
770 tty_insert_flip_string(port, icom_port->recv_buf + offset, count - 1);
771 }
772
773 icount = &icom_port->uart_port.icount;
774 icount->rx += count;
775
776 /* Break detect logic */
777 if ((status & SA_FLAGS_FRAME_ERROR)
778 && first == 0) {
779 status &= ~SA_FLAGS_FRAME_ERROR;
780 status |= SA_FLAGS_BREAK_DET;
781 trace(icom_port, "BREAK_DET", 0);
782 }
783
784 flag = TTY_NORMAL;
785
786 if (status &
787 (SA_FLAGS_BREAK_DET | SA_FLAGS_PARITY_ERROR |
788 SA_FLAGS_FRAME_ERROR | SA_FLAGS_OVERRUN)) {
789
790 if (status & SA_FLAGS_BREAK_DET)
791 icount->brk++;
792 if (status & SA_FLAGS_PARITY_ERROR)
793 icount->parity++;
794 if (status & SA_FLAGS_FRAME_ERROR)
795 icount->frame++;
796 if (status & SA_FLAGS_OVERRUN)
797 icount->overrun++;
798
799 /*
800 * Now check to see if character should be
801 * ignored, and mask off conditions which
802 * should be ignored.
803 */
804 if (status & icom_port->ignore_status_mask) {
805 trace(icom_port, "IGNORE_CHAR", 0);
806 goto ignore_char;
807 }
808
809 status &= icom_port->read_status_mask;
810
811 if (status & SA_FLAGS_BREAK_DET) {
812 flag = TTY_BREAK;
813 } else if (status & SA_FLAGS_PARITY_ERROR) {
814 trace(icom_port, "PARITY_ERROR", 0);
815 flag = TTY_PARITY;
816 } else if (status & SA_FLAGS_FRAME_ERROR)
817 flag = TTY_FRAME;
818
819 }
820
821 tty_insert_flip_char(port, *(icom_port->recv_buf + offset + count - 1), flag);
822
823 if (status & SA_FLAGS_OVERRUN)
824 /*
825 * Overrun is special, since it's
826 * reported immediately, and doesn't
827 * affect the current character
828 */
829 tty_insert_flip_char(port, 0, TTY_OVERRUN);
830ignore_char:
831 icom_port->statStg->rcv[rcv_buff].flags = 0;
832 icom_port->statStg->rcv[rcv_buff].leLength = 0;
833 icom_port->statStg->rcv[rcv_buff].WorkingLength =
834 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
835
836 rcv_buff++;
837 if (rcv_buff == NUM_RBUFFS)
838 rcv_buff = 0;
839
840 status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
841 }
842 icom_port->next_rcv = rcv_buff;
843
844 spin_unlock(&icom_port->uart_port.lock);
845 tty_flip_buffer_push(port);
846 spin_lock(&icom_port->uart_port.lock);
847}
848
849static void process_interrupt(u16 port_int_reg,
850 struct icom_port *icom_port)
851{
852
853 spin_lock(&icom_port->uart_port.lock);
854 trace(icom_port, "INTERRUPT", port_int_reg);
855
856 if (port_int_reg & (INT_XMIT_COMPLETED | INT_XMIT_DISABLED))
857 xmit_interrupt(port_int_reg, icom_port);
858
859 if (port_int_reg & INT_RCV_COMPLETED)
860 recv_interrupt(port_int_reg, icom_port);
861
862 spin_unlock(&icom_port->uart_port.lock);
863}
864
865static irqreturn_t icom_interrupt(int irq, void *dev_id)
866{
867 void __iomem * int_reg;
868 u32 adapter_interrupts;
869 u16 port_int_reg;
870 struct icom_adapter *icom_adapter;
871 struct icom_port *icom_port;
872
873 /* find icom_port for this interrupt */
874 icom_adapter = (struct icom_adapter *) dev_id;
875
876 if (icom_adapter->version == ADAPTER_V2) {
877 int_reg = icom_adapter->base_addr + 0x8024;
878
879 adapter_interrupts = readl(int_reg);
880
881 if (adapter_interrupts & 0x00003FFF) {
882 /* port 2 interrupt, NOTE: for all ADAPTER_V2, port 2 will be active */
883 icom_port = &icom_adapter->port_info[2];
884 port_int_reg = (u16) adapter_interrupts;
885 process_interrupt(port_int_reg, icom_port);
886 check_modem_status(icom_port);
887 }
888 if (adapter_interrupts & 0x3FFF0000) {
889 /* port 3 interrupt */
890 icom_port = &icom_adapter->port_info[3];
891 if (icom_port->status == ICOM_PORT_ACTIVE) {
892 port_int_reg =
893 (u16) (adapter_interrupts >> 16);
894 process_interrupt(port_int_reg, icom_port);
895 check_modem_status(icom_port);
896 }
897 }
898
899 /* Clear out any pending interrupts */
900 writel(adapter_interrupts, int_reg);
901
902 int_reg = icom_adapter->base_addr + 0x8004;
903 } else {
904 int_reg = icom_adapter->base_addr + 0x4004;
905 }
906
907 adapter_interrupts = readl(int_reg);
908
909 if (adapter_interrupts & 0x00003FFF) {
910 /* port 0 interrupt, NOTE: for all adapters, port 0 will be active */
911 icom_port = &icom_adapter->port_info[0];
912 port_int_reg = (u16) adapter_interrupts;
913 process_interrupt(port_int_reg, icom_port);
914 check_modem_status(icom_port);
915 }
916 if (adapter_interrupts & 0x3FFF0000) {
917 /* port 1 interrupt */
918 icom_port = &icom_adapter->port_info[1];
919 if (icom_port->status == ICOM_PORT_ACTIVE) {
920 port_int_reg = (u16) (adapter_interrupts >> 16);
921 process_interrupt(port_int_reg, icom_port);
922 check_modem_status(icom_port);
923 }
924 }
925
926 /* Clear out any pending interrupts */
927 writel(adapter_interrupts, int_reg);
928
929 /* flush the write */
930 adapter_interrupts = readl(int_reg);
931
932 return IRQ_HANDLED;
933}
934
935/*
936 * ------------------------------------------------------------------
937 * Begin serial-core API
938 * ------------------------------------------------------------------
939 */
940static unsigned int icom_tx_empty(struct uart_port *port)
941{
942 int ret;
943 unsigned long flags;
944
945 spin_lock_irqsave(&port->lock, flags);
946 if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
947 SA_FLAGS_READY_TO_XMIT)
948 ret = TIOCSER_TEMT;
949 else
950 ret = 0;
951
952 spin_unlock_irqrestore(&port->lock, flags);
953 return ret;
954}
955
956static void icom_set_mctrl(struct uart_port *port, unsigned int mctrl)
957{
958 unsigned char local_osr;
959
960 trace(ICOM_PORT, "SET_MODEM", 0);
961 local_osr = readb(&ICOM_PORT->dram->osr);
962
963 if (mctrl & TIOCM_RTS) {
964 trace(ICOM_PORT, "RAISE_RTS", 0);
965 local_osr |= ICOM_RTS;
966 } else {
967 trace(ICOM_PORT, "LOWER_RTS", 0);
968 local_osr &= ~ICOM_RTS;
969 }
970
971 if (mctrl & TIOCM_DTR) {
972 trace(ICOM_PORT, "RAISE_DTR", 0);
973 local_osr |= ICOM_DTR;
974 } else {
975 trace(ICOM_PORT, "LOWER_DTR", 0);
976 local_osr &= ~ICOM_DTR;
977 }
978
979 writeb(local_osr, &ICOM_PORT->dram->osr);
980}
981
982static unsigned int icom_get_mctrl(struct uart_port *port)
983{
984 unsigned char status;
985 unsigned int result;
986
987 trace(ICOM_PORT, "GET_MODEM", 0);
988
989 status = readb(&ICOM_PORT->dram->isr);
990
991 result = ((status & ICOM_DCD) ? TIOCM_CAR : 0)
992 | ((status & ICOM_RI) ? TIOCM_RNG : 0)
993 | ((status & ICOM_DSR) ? TIOCM_DSR : 0)
994 | ((status & ICOM_CTS) ? TIOCM_CTS : 0);
995 return result;
996}
997
998static void icom_stop_tx(struct uart_port *port)
999{
1000 unsigned char cmdReg;
1001
1002 trace(ICOM_PORT, "STOP", 0);
1003 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1004 writeb(cmdReg | CMD_HOLD_XMIT, &ICOM_PORT->dram->CmdReg);
1005}
1006
1007static void icom_start_tx(struct uart_port *port)
1008{
1009 unsigned char cmdReg;
1010
1011 trace(ICOM_PORT, "START", 0);
1012 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1013 if ((cmdReg & CMD_HOLD_XMIT) == CMD_HOLD_XMIT)
1014 writeb(cmdReg & ~CMD_HOLD_XMIT,
1015 &ICOM_PORT->dram->CmdReg);
1016
1017 icom_write(port);
1018}
1019
1020static void icom_send_xchar(struct uart_port *port, char ch)
1021{
1022 unsigned char xdata;
1023 int index;
1024 unsigned long flags;
1025
1026 trace(ICOM_PORT, "SEND_XCHAR", ch);
1027
1028 /* wait .1 sec to send char */
1029 for (index = 0; index < 10; index++) {
1030 spin_lock_irqsave(&port->lock, flags);
1031 xdata = readb(&ICOM_PORT->dram->xchar);
1032 if (xdata == 0x00) {
1033 trace(ICOM_PORT, "QUICK_WRITE", 0);
1034 writeb(ch, &ICOM_PORT->dram->xchar);
1035
1036 /* flush write operation */
1037 xdata = readb(&ICOM_PORT->dram->xchar);
1038 spin_unlock_irqrestore(&port->lock, flags);
1039 break;
1040 }
1041 spin_unlock_irqrestore(&port->lock, flags);
1042 msleep(10);
1043 }
1044}
1045
1046static void icom_stop_rx(struct uart_port *port)
1047{
1048 unsigned char cmdReg;
1049
1050 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1051 writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1052}
1053
1054static void icom_break(struct uart_port *port, int break_state)
1055{
1056 unsigned char cmdReg;
1057 unsigned long flags;
1058
1059 spin_lock_irqsave(&port->lock, flags);
1060 trace(ICOM_PORT, "BREAK", 0);
1061 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1062 if (break_state == -1) {
1063 writeb(cmdReg | CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
1064 } else {
1065 writeb(cmdReg & ~CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
1066 }
1067 spin_unlock_irqrestore(&port->lock, flags);
1068}
1069
1070static int icom_open(struct uart_port *port)
1071{
1072 int retval;
1073
1074 kref_get(&ICOM_PORT->adapter->kref);
1075 retval = startup(ICOM_PORT);
1076
1077 if (retval) {
1078 kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
1079 trace(ICOM_PORT, "STARTUP_ERROR", 0);
1080 return retval;
1081 }
1082
1083 return 0;
1084}
1085
1086static void icom_close(struct uart_port *port)
1087{
1088 unsigned char cmdReg;
1089
1090 trace(ICOM_PORT, "CLOSE", 0);
1091
1092 /* stop receiver */
1093 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1094 writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1095
1096 shutdown(ICOM_PORT);
1097
1098 kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
1099}
1100
1101static void icom_set_termios(struct uart_port *port,
1102 struct ktermios *termios,
1103 struct ktermios *old_termios)
1104{
1105 int baud;
1106 unsigned cflag, iflag;
1107 char new_config2;
1108 char new_config3 = 0;
1109 char tmp_byte;
1110 int index;
1111 int rcv_buff, xmit_buff;
1112 unsigned long offset;
1113 unsigned long flags;
1114
1115 spin_lock_irqsave(&port->lock, flags);
1116 trace(ICOM_PORT, "CHANGE_SPEED", 0);
1117
1118 cflag = termios->c_cflag;
1119 iflag = termios->c_iflag;
1120
1121 new_config2 = ICOM_ACFG_DRIVE1;
1122
1123 /* byte size and parity */
1124 switch (cflag & CSIZE) {
1125 case CS5: /* 5 bits/char */
1126 new_config2 |= ICOM_ACFG_5BPC;
1127 break;
1128 case CS6: /* 6 bits/char */
1129 new_config2 |= ICOM_ACFG_6BPC;
1130 break;
1131 case CS7: /* 7 bits/char */
1132 new_config2 |= ICOM_ACFG_7BPC;
1133 break;
1134 case CS8: /* 8 bits/char */
1135 new_config2 |= ICOM_ACFG_8BPC;
1136 break;
1137 default:
1138 break;
1139 }
1140 if (cflag & CSTOPB) {
1141 /* 2 stop bits */
1142 new_config2 |= ICOM_ACFG_2STOP_BIT;
1143 }
1144 if (cflag & PARENB) {
1145 /* parity bit enabled */
1146 new_config2 |= ICOM_ACFG_PARITY_ENAB;
1147 trace(ICOM_PORT, "PARENB", 0);
1148 }
1149 if (cflag & PARODD) {
1150 /* odd parity */
1151 new_config2 |= ICOM_ACFG_PARITY_ODD;
1152 trace(ICOM_PORT, "PARODD", 0);
1153 }
1154
1155 /* Determine divisor based on baud rate */
1156 baud = uart_get_baud_rate(port, termios, old_termios,
1157 icom_acfg_baud[0],
1158 icom_acfg_baud[BAUD_TABLE_LIMIT]);
1159 if (!baud)
1160 baud = 9600; /* B0 transition handled in rs_set_termios */
1161
1162 for (index = 0; index < BAUD_TABLE_LIMIT; index++) {
1163 if (icom_acfg_baud[index] == baud) {
1164 new_config3 = index;
1165 break;
1166 }
1167 }
1168
1169 uart_update_timeout(port, cflag, baud);
1170
1171 /* CTS flow control flag and modem status interrupts */
1172 tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
1173 if (cflag & CRTSCTS)
1174 tmp_byte |= HDLC_HDW_FLOW;
1175 else
1176 tmp_byte &= ~HDLC_HDW_FLOW;
1177 writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
1178
1179 /*
1180 * Set up parity check flag
1181 */
1182 ICOM_PORT->read_status_mask = SA_FLAGS_OVERRUN | SA_FL_RCV_DONE;
1183 if (iflag & INPCK)
1184 ICOM_PORT->read_status_mask |=
1185 SA_FLAGS_FRAME_ERROR | SA_FLAGS_PARITY_ERROR;
1186
1187 if ((iflag & BRKINT) || (iflag & PARMRK))
1188 ICOM_PORT->read_status_mask |= SA_FLAGS_BREAK_DET;
1189
1190 /*
1191 * Characters to ignore
1192 */
1193 ICOM_PORT->ignore_status_mask = 0;
1194 if (iflag & IGNPAR)
1195 ICOM_PORT->ignore_status_mask |=
1196 SA_FLAGS_PARITY_ERROR | SA_FLAGS_FRAME_ERROR;
1197 if (iflag & IGNBRK) {
1198 ICOM_PORT->ignore_status_mask |= SA_FLAGS_BREAK_DET;
1199 /*
1200 * If we're ignore parity and break indicators, ignore
1201 * overruns too. (For real raw support).
1202 */
1203 if (iflag & IGNPAR)
1204 ICOM_PORT->ignore_status_mask |= SA_FLAGS_OVERRUN;
1205 }
1206
1207 /*
1208 * !!! ignore all characters if CREAD is not set
1209 */
1210 if ((cflag & CREAD) == 0)
1211 ICOM_PORT->ignore_status_mask |= SA_FL_RCV_DONE;
1212
1213 /* Turn off Receiver to prepare for reset */
1214 writeb(CMD_RCV_DISABLE, &ICOM_PORT->dram->CmdReg);
1215
1216 for (index = 0; index < 10; index++) {
1217 if (readb(&ICOM_PORT->dram->PrevCmdReg) == 0x00) {
1218 break;
1219 }
1220 }
1221
1222 /* clear all current buffers of data */
1223 for (rcv_buff = 0; rcv_buff < NUM_RBUFFS; rcv_buff++) {
1224 ICOM_PORT->statStg->rcv[rcv_buff].flags = 0;
1225 ICOM_PORT->statStg->rcv[rcv_buff].leLength = 0;
1226 ICOM_PORT->statStg->rcv[rcv_buff].WorkingLength =
1227 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
1228 }
1229
1230 for (xmit_buff = 0; xmit_buff < NUM_XBUFFS; xmit_buff++) {
1231 ICOM_PORT->statStg->xmit[xmit_buff].flags = 0;
1232 }
1233
1234 /* activate changes and start xmit and receiver here */
1235 /* Enable the receiver */
1236 writeb(new_config3, &(ICOM_PORT->dram->async_config3));
1237 writeb(new_config2, &(ICOM_PORT->dram->async_config2));
1238 tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
1239 tmp_byte |= HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL;
1240 writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
1241 writeb(0x04, &(ICOM_PORT->dram->FlagFillIdleTimer)); /* 0.5 seconds */
1242 writeb(0xFF, &(ICOM_PORT->dram->ier)); /* enable modem signal interrupts */
1243
1244 /* reset processor */
1245 writeb(CMD_RESTART, &ICOM_PORT->dram->CmdReg);
1246
1247 for (index = 0; index < 10; index++) {
1248 if (readb(&ICOM_PORT->dram->CmdReg) == 0x00) {
1249 break;
1250 }
1251 }
1252
1253 /* Enable Transmitter and Receiver */
1254 offset =
1255 (unsigned long) &ICOM_PORT->statStg->rcv[0] -
1256 (unsigned long) ICOM_PORT->statStg;
1257 writel(ICOM_PORT->statStg_pci + offset,
1258 &ICOM_PORT->dram->RcvStatusAddr);
1259 ICOM_PORT->next_rcv = 0;
1260 ICOM_PORT->put_length = 0;
1261 *ICOM_PORT->xmitRestart = 0;
1262 writel(ICOM_PORT->xmitRestart_pci,
1263 &ICOM_PORT->dram->XmitStatusAddr);
1264 trace(ICOM_PORT, "XR_ENAB", 0);
1265 writeb(CMD_XMIT_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1266
1267 spin_unlock_irqrestore(&port->lock, flags);
1268}
1269
1270static const char *icom_type(struct uart_port *port)
1271{
1272 return "icom";
1273}
1274
1275static void icom_release_port(struct uart_port *port)
1276{
1277}
1278
1279static int icom_request_port(struct uart_port *port)
1280{
1281 return 0;
1282}
1283
1284static void icom_config_port(struct uart_port *port, int flags)
1285{
1286 port->type = PORT_ICOM;
1287}
1288
1289static struct uart_ops icom_ops = {
1290 .tx_empty = icom_tx_empty,
1291 .set_mctrl = icom_set_mctrl,
1292 .get_mctrl = icom_get_mctrl,
1293 .stop_tx = icom_stop_tx,
1294 .start_tx = icom_start_tx,
1295 .send_xchar = icom_send_xchar,
1296 .stop_rx = icom_stop_rx,
1297 .break_ctl = icom_break,
1298 .startup = icom_open,
1299 .shutdown = icom_close,
1300 .set_termios = icom_set_termios,
1301 .type = icom_type,
1302 .release_port = icom_release_port,
1303 .request_port = icom_request_port,
1304 .config_port = icom_config_port,
1305};
1306
1307#define ICOM_CONSOLE NULL
1308
1309static struct uart_driver icom_uart_driver = {
1310 .owner = THIS_MODULE,
1311 .driver_name = ICOM_DRIVER_NAME,
1312 .dev_name = "ttyA",
1313 .major = ICOM_MAJOR,
1314 .minor = ICOM_MINOR_START,
1315 .nr = NR_PORTS,
1316 .cons = ICOM_CONSOLE,
1317};
1318
1319static int icom_init_ports(struct icom_adapter *icom_adapter)
1320{
1321 u32 subsystem_id = icom_adapter->subsystem_id;
1322 int i;
1323 struct icom_port *icom_port;
1324
1325 if (icom_adapter->version == ADAPTER_V1) {
1326 icom_adapter->numb_ports = 2;
1327
1328 for (i = 0; i < 2; i++) {
1329 icom_port = &icom_adapter->port_info[i];
1330 icom_port->port = i;
1331 icom_port->status = ICOM_PORT_ACTIVE;
1332 icom_port->imbed_modem = ICOM_UNKNOWN;
1333 }
1334 } else {
1335 if (subsystem_id == PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL) {
1336 icom_adapter->numb_ports = 4;
1337
1338 for (i = 0; i < 4; i++) {
1339 icom_port = &icom_adapter->port_info[i];
1340
1341 icom_port->port = i;
1342 icom_port->status = ICOM_PORT_ACTIVE;
1343 icom_port->imbed_modem = ICOM_IMBED_MODEM;
1344 }
1345 } else {
1346 icom_adapter->numb_ports = 4;
1347
1348 icom_adapter->port_info[0].port = 0;
1349 icom_adapter->port_info[0].status = ICOM_PORT_ACTIVE;
1350
1351 if (subsystem_id ==
1352 PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM) {
1353 icom_adapter->port_info[0].imbed_modem = ICOM_IMBED_MODEM;
1354 } else {
1355 icom_adapter->port_info[0].imbed_modem = ICOM_RVX;
1356 }
1357
1358 icom_adapter->port_info[1].status = ICOM_PORT_OFF;
1359
1360 icom_adapter->port_info[2].port = 2;
1361 icom_adapter->port_info[2].status = ICOM_PORT_ACTIVE;
1362 icom_adapter->port_info[2].imbed_modem = ICOM_RVX;
1363 icom_adapter->port_info[3].status = ICOM_PORT_OFF;
1364 }
1365 }
1366
1367 return 0;
1368}
1369
1370static void icom_port_active(struct icom_port *icom_port, struct icom_adapter *icom_adapter, int port_num)
1371{
1372 if (icom_adapter->version == ADAPTER_V1) {
1373 icom_port->global_reg = icom_adapter->base_addr + 0x4000;
1374 icom_port->int_reg = icom_adapter->base_addr +
1375 0x4004 + 2 - 2 * port_num;
1376 } else {
1377 icom_port->global_reg = icom_adapter->base_addr + 0x8000;
1378 if (icom_port->port < 2)
1379 icom_port->int_reg = icom_adapter->base_addr +
1380 0x8004 + 2 - 2 * icom_port->port;
1381 else
1382 icom_port->int_reg = icom_adapter->base_addr +
1383 0x8024 + 2 - 2 * (icom_port->port - 2);
1384 }
1385}
1386static int icom_load_ports(struct icom_adapter *icom_adapter)
1387{
1388 struct icom_port *icom_port;
1389 int port_num;
1390
1391 for (port_num = 0; port_num < icom_adapter->numb_ports; port_num++) {
1392
1393 icom_port = &icom_adapter->port_info[port_num];
1394
1395 if (icom_port->status == ICOM_PORT_ACTIVE) {
1396 icom_port_active(icom_port, icom_adapter, port_num);
1397 icom_port->dram = icom_adapter->base_addr +
1398 0x2000 * icom_port->port;
1399
1400 icom_port->adapter = icom_adapter;
1401
1402 /* get port memory */
1403 if (get_port_memory(icom_port) != 0) {
1404 dev_err(&icom_port->adapter->pci_dev->dev,
1405 "Memory allocation for port FAILED\n");
1406 }
1407 }
1408 }
1409 return 0;
1410}
1411
1412static int icom_alloc_adapter(struct icom_adapter
1413 **icom_adapter_ref)
1414{
1415 int adapter_count = 0;
1416 struct icom_adapter *icom_adapter;
1417 struct icom_adapter *cur_adapter_entry;
1418 struct list_head *tmp;
1419
1420 icom_adapter = kzalloc(sizeof(struct icom_adapter), GFP_KERNEL);
1421
1422 if (!icom_adapter) {
1423 return -ENOMEM;
1424 }
1425
1426 list_for_each(tmp, &icom_adapter_head) {
1427 cur_adapter_entry =
1428 list_entry(tmp, struct icom_adapter,
1429 icom_adapter_entry);
1430 if (cur_adapter_entry->index != adapter_count) {
1431 break;
1432 }
1433 adapter_count++;
1434 }
1435
1436 icom_adapter->index = adapter_count;
1437 list_add_tail(&icom_adapter->icom_adapter_entry, tmp);
1438
1439 *icom_adapter_ref = icom_adapter;
1440 return 0;
1441}
1442
1443static void icom_free_adapter(struct icom_adapter *icom_adapter)
1444{
1445 list_del(&icom_adapter->icom_adapter_entry);
1446 kfree(icom_adapter);
1447}
1448
1449static void icom_remove_adapter(struct icom_adapter *icom_adapter)
1450{
1451 struct icom_port *icom_port;
1452 int index;
1453
1454 for (index = 0; index < icom_adapter->numb_ports; index++) {
1455 icom_port = &icom_adapter->port_info[index];
1456
1457 if (icom_port->status == ICOM_PORT_ACTIVE) {
1458 dev_info(&icom_adapter->pci_dev->dev,
1459 "Device removed\n");
1460
1461 uart_remove_one_port(&icom_uart_driver,
1462 &icom_port->uart_port);
1463
1464 /* be sure that DTR and RTS are dropped */
1465 writeb(0x00, &icom_port->dram->osr);
1466
1467 /* Wait 0.1 Sec for simple Init to complete */
1468 msleep(100);
1469
1470 /* Stop proccessor */
1471 stop_processor(icom_port);
1472
1473 free_port_memory(icom_port);
1474 }
1475 }
1476
1477 free_irq(icom_adapter->pci_dev->irq, (void *) icom_adapter);
1478 iounmap(icom_adapter->base_addr);
1479 pci_release_regions(icom_adapter->pci_dev);
1480 icom_free_adapter(icom_adapter);
1481}
1482
1483static void icom_kref_release(struct kref *kref)
1484{
1485 struct icom_adapter *icom_adapter;
1486
1487 icom_adapter = to_icom_adapter(kref);
1488 icom_remove_adapter(icom_adapter);
1489}
1490
1491static int icom_probe(struct pci_dev *dev,
1492 const struct pci_device_id *ent)
1493{
1494 int index;
1495 unsigned int command_reg;
1496 int retval;
1497 struct icom_adapter *icom_adapter;
1498 struct icom_port *icom_port;
1499
1500 retval = pci_enable_device(dev);
1501 if (retval) {
1502 dev_err(&dev->dev, "Device enable FAILED\n");
1503 return retval;
1504 }
1505
1506 retval = pci_request_regions(dev, "icom");
1507 if (retval) {
1508 dev_err(&dev->dev, "pci_request_regions FAILED\n");
1509 pci_disable_device(dev);
1510 return retval;
1511 }
1512
1513 pci_set_master(dev);
1514
1515 retval = pci_read_config_dword(dev, PCI_COMMAND, &command_reg);
1516 if (retval) {
1517 dev_err(&dev->dev, "PCI Config read FAILED\n");
1518 return retval;
1519 }
1520
1521 pci_write_config_dword(dev, PCI_COMMAND,
1522 command_reg | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
1523 | PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
1524
1525 if (ent->driver_data == ADAPTER_V1) {
1526 pci_write_config_dword(dev, 0x44, 0x8300830A);
1527 } else {
1528 pci_write_config_dword(dev, 0x44, 0x42004200);
1529 pci_write_config_dword(dev, 0x48, 0x42004200);
1530 }
1531
1532
1533 retval = icom_alloc_adapter(&icom_adapter);
1534 if (retval) {
1535 dev_err(&dev->dev, "icom_alloc_adapter FAILED\n");
1536 retval = -EIO;
1537 goto probe_exit0;
1538 }
1539
1540 icom_adapter->base_addr_pci = pci_resource_start(dev, 0);
1541 icom_adapter->pci_dev = dev;
1542 icom_adapter->version = ent->driver_data;
1543 icom_adapter->subsystem_id = ent->subdevice;
1544
1545
1546 retval = icom_init_ports(icom_adapter);
1547 if (retval) {
1548 dev_err(&dev->dev, "Port configuration failed\n");
1549 goto probe_exit1;
1550 }
1551
1552 icom_adapter->base_addr = pci_ioremap_bar(dev, 0);
1553
1554 if (!icom_adapter->base_addr) {
1555 retval = -ENOMEM;
1556 goto probe_exit1;
1557 }
1558
1559 /* save off irq and request irq line */
1560 retval = request_irq(dev->irq, icom_interrupt, IRQF_SHARED, ICOM_DRIVER_NAME, (void *)icom_adapter);
1561 if (retval) {
1562 goto probe_exit2;
1563 }
1564
1565 retval = icom_load_ports(icom_adapter);
1566
1567 for (index = 0; index < icom_adapter->numb_ports; index++) {
1568 icom_port = &icom_adapter->port_info[index];
1569
1570 if (icom_port->status == ICOM_PORT_ACTIVE) {
1571 icom_port->uart_port.irq = icom_port->adapter->pci_dev->irq;
1572 icom_port->uart_port.type = PORT_ICOM;
1573 icom_port->uart_port.iotype = UPIO_MEM;
1574 icom_port->uart_port.membase =
1575 (unsigned char __iomem *)icom_adapter->base_addr_pci;
1576 icom_port->uart_port.fifosize = 16;
1577 icom_port->uart_port.ops = &icom_ops;
1578 icom_port->uart_port.line =
1579 icom_port->port + icom_adapter->index * 4;
1580 if (uart_add_one_port (&icom_uart_driver, &icom_port->uart_port)) {
1581 icom_port->status = ICOM_PORT_OFF;
1582 dev_err(&dev->dev, "Device add failed\n");
1583 } else
1584 dev_info(&dev->dev, "Device added\n");
1585 }
1586 }
1587
1588 kref_init(&icom_adapter->kref);
1589 return 0;
1590
1591probe_exit2:
1592 iounmap(icom_adapter->base_addr);
1593probe_exit1:
1594 icom_free_adapter(icom_adapter);
1595
1596probe_exit0:
1597 pci_release_regions(dev);
1598 pci_disable_device(dev);
1599
1600 return retval;
1601}
1602
1603static void icom_remove(struct pci_dev *dev)
1604{
1605 struct icom_adapter *icom_adapter;
1606 struct list_head *tmp;
1607
1608 list_for_each(tmp, &icom_adapter_head) {
1609 icom_adapter = list_entry(tmp, struct icom_adapter,
1610 icom_adapter_entry);
1611 if (icom_adapter->pci_dev == dev) {
1612 kref_put(&icom_adapter->kref, icom_kref_release);
1613 return;
1614 }
1615 }
1616
1617 dev_err(&dev->dev, "Unable to find device to remove\n");
1618}
1619
1620static struct pci_driver icom_pci_driver = {
1621 .name = ICOM_DRIVER_NAME,
1622 .id_table = icom_pci_table,
1623 .probe = icom_probe,
1624 .remove = icom_remove,
1625};
1626
1627static int __init icom_init(void)
1628{
1629 int ret;
1630
1631 spin_lock_init(&icom_lock);
1632
1633 ret = uart_register_driver(&icom_uart_driver);
1634 if (ret)
1635 return ret;
1636
1637 ret = pci_register_driver(&icom_pci_driver);
1638
1639 if (ret < 0)
1640 uart_unregister_driver(&icom_uart_driver);
1641
1642 return ret;
1643}
1644
1645static void __exit icom_exit(void)
1646{
1647 pci_unregister_driver(&icom_pci_driver);
1648 uart_unregister_driver(&icom_uart_driver);
1649}
1650
1651module_init(icom_init);
1652module_exit(icom_exit);
1653
1654MODULE_AUTHOR("Michael Anderson <mjanders@us.ibm.com>");
1655MODULE_DESCRIPTION("IBM iSeries Serial IOA driver");
1656MODULE_SUPPORTED_DEVICE
1657 ("IBM iSeries 2745, 2771, 2772, 2742, 2793 and 2805 Communications adapters");
1658MODULE_LICENSE("GPL");
1659MODULE_FIRMWARE("icom_call_setup.bin");
1660MODULE_FIRMWARE("icom_res_dce.bin");
1661MODULE_FIRMWARE("icom_asc.bin");
1/*
2 * icom.c
3 *
4 * Copyright (C) 2001 IBM Corporation. All rights reserved.
5 *
6 * Serial device driver.
7 *
8 * Based on code from serial.c
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 */
25#define SERIAL_DO_RESTART
26#include <linux/module.h>
27#include <linux/kernel.h>
28#include <linux/errno.h>
29#include <linux/signal.h>
30#include <linux/timer.h>
31#include <linux/interrupt.h>
32#include <linux/tty.h>
33#include <linux/termios.h>
34#include <linux/fs.h>
35#include <linux/tty_flip.h>
36#include <linux/serial.h>
37#include <linux/serial_reg.h>
38#include <linux/major.h>
39#include <linux/string.h>
40#include <linux/fcntl.h>
41#include <linux/ptrace.h>
42#include <linux/ioport.h>
43#include <linux/mm.h>
44#include <linux/slab.h>
45#include <linux/init.h>
46#include <linux/delay.h>
47#include <linux/pci.h>
48#include <linux/vmalloc.h>
49#include <linux/smp.h>
50#include <linux/spinlock.h>
51#include <linux/kref.h>
52#include <linux/firmware.h>
53#include <linux/bitops.h>
54
55#include <asm/io.h>
56#include <asm/irq.h>
57#include <asm/uaccess.h>
58
59#include "icom.h"
60
61/*#define ICOM_TRACE enable port trace capabilities */
62
63#define ICOM_DRIVER_NAME "icom"
64#define ICOM_VERSION_STR "1.3.1"
65#define NR_PORTS 128
66#define ICOM_PORT ((struct icom_port *)port)
67#define to_icom_adapter(d) container_of(d, struct icom_adapter, kref)
68
69static const struct pci_device_id icom_pci_table[] = {
70 {
71 .vendor = PCI_VENDOR_ID_IBM,
72 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_1,
73 .subvendor = PCI_ANY_ID,
74 .subdevice = PCI_ANY_ID,
75 .driver_data = ADAPTER_V1,
76 },
77 {
78 .vendor = PCI_VENDOR_ID_IBM,
79 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
80 .subvendor = PCI_VENDOR_ID_IBM,
81 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_TWO_PORTS_RVX,
82 .driver_data = ADAPTER_V2,
83 },
84 {
85 .vendor = PCI_VENDOR_ID_IBM,
86 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
87 .subvendor = PCI_VENDOR_ID_IBM,
88 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM,
89 .driver_data = ADAPTER_V2,
90 },
91 {
92 .vendor = PCI_VENDOR_ID_IBM,
93 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
94 .subvendor = PCI_VENDOR_ID_IBM,
95 .subdevice = PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL,
96 .driver_data = ADAPTER_V2,
97 },
98 {
99 .vendor = PCI_VENDOR_ID_IBM,
100 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
101 .subvendor = PCI_VENDOR_ID_IBM,
102 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM_PCIE,
103 .driver_data = ADAPTER_V2,
104 },
105 {}
106};
107
108struct lookup_proc_table start_proc[4] = {
109 {NULL, ICOM_CONTROL_START_A},
110 {NULL, ICOM_CONTROL_START_B},
111 {NULL, ICOM_CONTROL_START_C},
112 {NULL, ICOM_CONTROL_START_D}
113};
114
115
116struct lookup_proc_table stop_proc[4] = {
117 {NULL, ICOM_CONTROL_STOP_A},
118 {NULL, ICOM_CONTROL_STOP_B},
119 {NULL, ICOM_CONTROL_STOP_C},
120 {NULL, ICOM_CONTROL_STOP_D}
121};
122
123struct lookup_int_table int_mask_tbl[4] = {
124 {NULL, ICOM_INT_MASK_PRC_A},
125 {NULL, ICOM_INT_MASK_PRC_B},
126 {NULL, ICOM_INT_MASK_PRC_C},
127 {NULL, ICOM_INT_MASK_PRC_D},
128};
129
130
131MODULE_DEVICE_TABLE(pci, icom_pci_table);
132
133static LIST_HEAD(icom_adapter_head);
134
135/* spinlock for adapter initialization and changing adapter operations */
136static spinlock_t icom_lock;
137
138#ifdef ICOM_TRACE
139static inline void trace(struct icom_port *icom_port, char *trace_pt,
140 unsigned long trace_data)
141{
142 dev_info(&icom_port->adapter->pci_dev->dev, ":%d:%s - %lx\n",
143 icom_port->port, trace_pt, trace_data);
144}
145#else
146static inline void trace(struct icom_port *icom_port, char *trace_pt, unsigned long trace_data) {};
147#endif
148static void icom_kref_release(struct kref *kref);
149
150static void free_port_memory(struct icom_port *icom_port)
151{
152 struct pci_dev *dev = icom_port->adapter->pci_dev;
153
154 trace(icom_port, "RET_PORT_MEM", 0);
155 if (icom_port->recv_buf) {
156 pci_free_consistent(dev, 4096, icom_port->recv_buf,
157 icom_port->recv_buf_pci);
158 icom_port->recv_buf = NULL;
159 }
160 if (icom_port->xmit_buf) {
161 pci_free_consistent(dev, 4096, icom_port->xmit_buf,
162 icom_port->xmit_buf_pci);
163 icom_port->xmit_buf = NULL;
164 }
165 if (icom_port->statStg) {
166 pci_free_consistent(dev, 4096, icom_port->statStg,
167 icom_port->statStg_pci);
168 icom_port->statStg = NULL;
169 }
170
171 if (icom_port->xmitRestart) {
172 pci_free_consistent(dev, 4096, icom_port->xmitRestart,
173 icom_port->xmitRestart_pci);
174 icom_port->xmitRestart = NULL;
175 }
176}
177
178static int __devinit get_port_memory(struct icom_port *icom_port)
179{
180 int index;
181 unsigned long stgAddr;
182 unsigned long startStgAddr;
183 unsigned long offset;
184 struct pci_dev *dev = icom_port->adapter->pci_dev;
185
186 icom_port->xmit_buf =
187 pci_alloc_consistent(dev, 4096, &icom_port->xmit_buf_pci);
188 if (!icom_port->xmit_buf) {
189 dev_err(&dev->dev, "Can not allocate Transmit buffer\n");
190 return -ENOMEM;
191 }
192
193 trace(icom_port, "GET_PORT_MEM",
194 (unsigned long) icom_port->xmit_buf);
195
196 icom_port->recv_buf =
197 pci_alloc_consistent(dev, 4096, &icom_port->recv_buf_pci);
198 if (!icom_port->recv_buf) {
199 dev_err(&dev->dev, "Can not allocate Receive buffer\n");
200 free_port_memory(icom_port);
201 return -ENOMEM;
202 }
203 trace(icom_port, "GET_PORT_MEM",
204 (unsigned long) icom_port->recv_buf);
205
206 icom_port->statStg =
207 pci_alloc_consistent(dev, 4096, &icom_port->statStg_pci);
208 if (!icom_port->statStg) {
209 dev_err(&dev->dev, "Can not allocate Status buffer\n");
210 free_port_memory(icom_port);
211 return -ENOMEM;
212 }
213 trace(icom_port, "GET_PORT_MEM",
214 (unsigned long) icom_port->statStg);
215
216 icom_port->xmitRestart =
217 pci_alloc_consistent(dev, 4096, &icom_port->xmitRestart_pci);
218 if (!icom_port->xmitRestart) {
219 dev_err(&dev->dev,
220 "Can not allocate xmit Restart buffer\n");
221 free_port_memory(icom_port);
222 return -ENOMEM;
223 }
224
225 memset(icom_port->statStg, 0, 4096);
226
227 /* FODs: Frame Out Descriptor Queue, this is a FIFO queue that
228 indicates that frames are to be transmitted
229 */
230
231 stgAddr = (unsigned long) icom_port->statStg;
232 for (index = 0; index < NUM_XBUFFS; index++) {
233 trace(icom_port, "FOD_ADDR", stgAddr);
234 stgAddr = stgAddr + sizeof(icom_port->statStg->xmit[0]);
235 if (index < (NUM_XBUFFS - 1)) {
236 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
237 icom_port->statStg->xmit[index].leLengthASD =
238 (unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
239 trace(icom_port, "FOD_ADDR", stgAddr);
240 trace(icom_port, "FOD_XBUFF",
241 (unsigned long) icom_port->xmit_buf);
242 icom_port->statStg->xmit[index].leBuffer =
243 cpu_to_le32(icom_port->xmit_buf_pci);
244 } else if (index == (NUM_XBUFFS - 1)) {
245 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
246 icom_port->statStg->xmit[index].leLengthASD =
247 (unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
248 trace(icom_port, "FOD_XBUFF",
249 (unsigned long) icom_port->xmit_buf);
250 icom_port->statStg->xmit[index].leBuffer =
251 cpu_to_le32(icom_port->xmit_buf_pci);
252 } else {
253 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
254 }
255 }
256 /* FIDs */
257 startStgAddr = stgAddr;
258
259 /* fill in every entry, even if no buffer */
260 for (index = 0; index < NUM_RBUFFS; index++) {
261 trace(icom_port, "FID_ADDR", stgAddr);
262 stgAddr = stgAddr + sizeof(icom_port->statStg->rcv[0]);
263 icom_port->statStg->rcv[index].leLength = 0;
264 icom_port->statStg->rcv[index].WorkingLength =
265 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
266 if (index < (NUM_RBUFFS - 1) ) {
267 offset = stgAddr - (unsigned long) icom_port->statStg;
268 icom_port->statStg->rcv[index].leNext =
269 cpu_to_le32(icom_port-> statStg_pci + offset);
270 trace(icom_port, "FID_RBUFF",
271 (unsigned long) icom_port->recv_buf);
272 icom_port->statStg->rcv[index].leBuffer =
273 cpu_to_le32(icom_port->recv_buf_pci);
274 } else if (index == (NUM_RBUFFS -1) ) {
275 offset = startStgAddr - (unsigned long) icom_port->statStg;
276 icom_port->statStg->rcv[index].leNext =
277 cpu_to_le32(icom_port-> statStg_pci + offset);
278 trace(icom_port, "FID_RBUFF",
279 (unsigned long) icom_port->recv_buf + 2048);
280 icom_port->statStg->rcv[index].leBuffer =
281 cpu_to_le32(icom_port->recv_buf_pci + 2048);
282 } else {
283 icom_port->statStg->rcv[index].leNext = 0;
284 icom_port->statStg->rcv[index].leBuffer = 0;
285 }
286 }
287
288 return 0;
289}
290
291static void stop_processor(struct icom_port *icom_port)
292{
293 unsigned long temp;
294 unsigned long flags;
295 int port;
296
297 spin_lock_irqsave(&icom_lock, flags);
298
299 port = icom_port->port;
300 if (port == 0 || port == 1)
301 stop_proc[port].global_control_reg = &icom_port->global_reg->control;
302 else
303 stop_proc[port].global_control_reg = &icom_port->global_reg->control_2;
304
305
306 if (port < 4) {
307 temp = readl(stop_proc[port].global_control_reg);
308 temp =
309 (temp & ~start_proc[port].processor_id) | stop_proc[port].processor_id;
310 writel(temp, stop_proc[port].global_control_reg);
311
312 /* write flush */
313 readl(stop_proc[port].global_control_reg);
314 } else {
315 dev_err(&icom_port->adapter->pci_dev->dev,
316 "Invalid port assignment\n");
317 }
318
319 spin_unlock_irqrestore(&icom_lock, flags);
320}
321
322static void start_processor(struct icom_port *icom_port)
323{
324 unsigned long temp;
325 unsigned long flags;
326 int port;
327
328 spin_lock_irqsave(&icom_lock, flags);
329
330 port = icom_port->port;
331 if (port == 0 || port == 1)
332 start_proc[port].global_control_reg = &icom_port->global_reg->control;
333 else
334 start_proc[port].global_control_reg = &icom_port->global_reg->control_2;
335 if (port < 4) {
336 temp = readl(start_proc[port].global_control_reg);
337 temp =
338 (temp & ~stop_proc[port].processor_id) | start_proc[port].processor_id;
339 writel(temp, start_proc[port].global_control_reg);
340
341 /* write flush */
342 readl(start_proc[port].global_control_reg);
343 } else {
344 dev_err(&icom_port->adapter->pci_dev->dev,
345 "Invalid port assignment\n");
346 }
347
348 spin_unlock_irqrestore(&icom_lock, flags);
349}
350
351static void load_code(struct icom_port *icom_port)
352{
353 const struct firmware *fw;
354 char __iomem *iram_ptr;
355 int index;
356 int status = 0;
357 void __iomem *dram_ptr = icom_port->dram;
358 dma_addr_t temp_pci;
359 unsigned char *new_page = NULL;
360 unsigned char cable_id = NO_CABLE;
361 struct pci_dev *dev = icom_port->adapter->pci_dev;
362
363 /* Clear out any pending interrupts */
364 writew(0x3FFF, icom_port->int_reg);
365
366 trace(icom_port, "CLEAR_INTERRUPTS", 0);
367
368 /* Stop processor */
369 stop_processor(icom_port);
370
371 /* Zero out DRAM */
372 memset_io(dram_ptr, 0, 512);
373
374 /* Load Call Setup into Adapter */
375 if (request_firmware(&fw, "icom_call_setup.bin", &dev->dev) < 0) {
376 dev_err(&dev->dev,"Unable to load icom_call_setup.bin firmware image\n");
377 status = -1;
378 goto load_code_exit;
379 }
380
381 if (fw->size > ICOM_DCE_IRAM_OFFSET) {
382 dev_err(&dev->dev, "Invalid firmware image for icom_call_setup.bin found.\n");
383 release_firmware(fw);
384 status = -1;
385 goto load_code_exit;
386 }
387
388 iram_ptr = (char __iomem *)icom_port->dram + ICOM_IRAM_OFFSET;
389 for (index = 0; index < fw->size; index++)
390 writeb(fw->data[index], &iram_ptr[index]);
391
392 release_firmware(fw);
393
394 /* Load Resident DCE portion of Adapter */
395 if (request_firmware(&fw, "icom_res_dce.bin", &dev->dev) < 0) {
396 dev_err(&dev->dev,"Unable to load icom_res_dce.bin firmware image\n");
397 status = -1;
398 goto load_code_exit;
399 }
400
401 if (fw->size > ICOM_IRAM_SIZE) {
402 dev_err(&dev->dev, "Invalid firmware image for icom_res_dce.bin found.\n");
403 release_firmware(fw);
404 status = -1;
405 goto load_code_exit;
406 }
407
408 iram_ptr = (char __iomem *) icom_port->dram + ICOM_IRAM_OFFSET;
409 for (index = ICOM_DCE_IRAM_OFFSET; index < fw->size; index++)
410 writeb(fw->data[index], &iram_ptr[index]);
411
412 release_firmware(fw);
413
414 /* Set Hardware level */
415 if (icom_port->adapter->version == ADAPTER_V2)
416 writeb(V2_HARDWARE, &(icom_port->dram->misc_flags));
417
418 /* Start the processor in Adapter */
419 start_processor(icom_port);
420
421 writeb((HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL),
422 &(icom_port->dram->HDLCConfigReg));
423 writeb(0x04, &(icom_port->dram->FlagFillIdleTimer)); /* 0.5 seconds */
424 writeb(0x00, &(icom_port->dram->CmdReg));
425 writeb(0x10, &(icom_port->dram->async_config3));
426 writeb((ICOM_ACFG_DRIVE1 | ICOM_ACFG_NO_PARITY | ICOM_ACFG_8BPC |
427 ICOM_ACFG_1STOP_BIT), &(icom_port->dram->async_config2));
428
429 /*Set up data in icom DRAM to indicate where personality
430 *code is located and its length.
431 */
432 new_page = pci_alloc_consistent(dev, 4096, &temp_pci);
433
434 if (!new_page) {
435 dev_err(&dev->dev, "Can not allocate DMA buffer\n");
436 status = -1;
437 goto load_code_exit;
438 }
439
440 if (request_firmware(&fw, "icom_asc.bin", &dev->dev) < 0) {
441 dev_err(&dev->dev,"Unable to load icom_asc.bin firmware image\n");
442 status = -1;
443 goto load_code_exit;
444 }
445
446 if (fw->size > ICOM_DCE_IRAM_OFFSET) {
447 dev_err(&dev->dev, "Invalid firmware image for icom_asc.bin found.\n");
448 release_firmware(fw);
449 status = -1;
450 goto load_code_exit;
451 }
452
453 for (index = 0; index < fw->size; index++)
454 new_page[index] = fw->data[index];
455
456 release_firmware(fw);
457
458 writeb((char) ((fw->size + 16)/16), &icom_port->dram->mac_length);
459 writel(temp_pci, &icom_port->dram->mac_load_addr);
460
461 /*Setting the syncReg to 0x80 causes adapter to start downloading
462 the personality code into adapter instruction RAM.
463 Once code is loaded, it will begin executing and, based on
464 information provided above, will start DMAing data from
465 shared memory to adapter DRAM.
466 */
467 /* the wait loop below verifies this write operation has been done
468 and processed
469 */
470 writeb(START_DOWNLOAD, &icom_port->dram->sync);
471
472 /* Wait max 1 Sec for data download and processor to start */
473 for (index = 0; index < 10; index++) {
474 msleep(100);
475 if (readb(&icom_port->dram->misc_flags) & ICOM_HDW_ACTIVE)
476 break;
477 }
478
479 if (index == 10)
480 status = -1;
481
482 /*
483 * check Cable ID
484 */
485 cable_id = readb(&icom_port->dram->cable_id);
486
487 if (cable_id & ICOM_CABLE_ID_VALID) {
488 /* Get cable ID into the lower 4 bits (standard form) */
489 cable_id = (cable_id & ICOM_CABLE_ID_MASK) >> 4;
490 icom_port->cable_id = cable_id;
491 } else {
492 dev_err(&dev->dev,"Invalid or no cable attached\n");
493 icom_port->cable_id = NO_CABLE;
494 }
495
496 load_code_exit:
497
498 if (status != 0) {
499 /* Clear out any pending interrupts */
500 writew(0x3FFF, icom_port->int_reg);
501
502 /* Turn off port */
503 writeb(ICOM_DISABLE, &(icom_port->dram->disable));
504
505 /* Stop processor */
506 stop_processor(icom_port);
507
508 dev_err(&icom_port->adapter->pci_dev->dev,"Port not opertional\n");
509 }
510
511 if (new_page != NULL)
512 pci_free_consistent(dev, 4096, new_page, temp_pci);
513}
514
515static int startup(struct icom_port *icom_port)
516{
517 unsigned long temp;
518 unsigned char cable_id, raw_cable_id;
519 unsigned long flags;
520 int port;
521
522 trace(icom_port, "STARTUP", 0);
523
524 if (!icom_port->dram) {
525 /* should NEVER be NULL */
526 dev_err(&icom_port->adapter->pci_dev->dev,
527 "Unusable Port, port configuration missing\n");
528 return -ENODEV;
529 }
530
531 /*
532 * check Cable ID
533 */
534 raw_cable_id = readb(&icom_port->dram->cable_id);
535 trace(icom_port, "CABLE_ID", raw_cable_id);
536
537 /* Get cable ID into the lower 4 bits (standard form) */
538 cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
539
540 /* Check for valid Cable ID */
541 if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
542 (cable_id != icom_port->cable_id)) {
543
544 /* reload adapter code, pick up any potential changes in cable id */
545 load_code(icom_port);
546
547 /* still no sign of cable, error out */
548 raw_cable_id = readb(&icom_port->dram->cable_id);
549 cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
550 if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
551 (icom_port->cable_id == NO_CABLE))
552 return -EIO;
553 }
554
555 /*
556 * Finally, clear and enable interrupts
557 */
558 spin_lock_irqsave(&icom_lock, flags);
559 port = icom_port->port;
560 if (port == 0 || port == 1)
561 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
562 else
563 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
564
565 if (port == 0 || port == 2)
566 writew(0x00FF, icom_port->int_reg);
567 else
568 writew(0x3F00, icom_port->int_reg);
569 if (port < 4) {
570 temp = readl(int_mask_tbl[port].global_int_mask);
571 writel(temp & ~int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
572
573 /* write flush */
574 readl(int_mask_tbl[port].global_int_mask);
575 } else {
576 dev_err(&icom_port->adapter->pci_dev->dev,
577 "Invalid port assignment\n");
578 }
579
580 spin_unlock_irqrestore(&icom_lock, flags);
581 return 0;
582}
583
584static void shutdown(struct icom_port *icom_port)
585{
586 unsigned long temp;
587 unsigned char cmdReg;
588 unsigned long flags;
589 int port;
590
591 spin_lock_irqsave(&icom_lock, flags);
592 trace(icom_port, "SHUTDOWN", 0);
593
594 /*
595 * disable all interrupts
596 */
597 port = icom_port->port;
598 if (port == 0 || port == 1)
599 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
600 else
601 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
602
603 if (port < 4) {
604 temp = readl(int_mask_tbl[port].global_int_mask);
605 writel(temp | int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
606
607 /* write flush */
608 readl(int_mask_tbl[port].global_int_mask);
609 } else {
610 dev_err(&icom_port->adapter->pci_dev->dev,
611 "Invalid port assignment\n");
612 }
613 spin_unlock_irqrestore(&icom_lock, flags);
614
615 /*
616 * disable break condition
617 */
618 cmdReg = readb(&icom_port->dram->CmdReg);
619 if (cmdReg & CMD_SND_BREAK) {
620 writeb(cmdReg & ~CMD_SND_BREAK, &icom_port->dram->CmdReg);
621 }
622}
623
624static int icom_write(struct uart_port *port)
625{
626 unsigned long data_count;
627 unsigned char cmdReg;
628 unsigned long offset;
629 int temp_tail = port->state->xmit.tail;
630
631 trace(ICOM_PORT, "WRITE", 0);
632
633 if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
634 SA_FLAGS_READY_TO_XMIT) {
635 trace(ICOM_PORT, "WRITE_FULL", 0);
636 return 0;
637 }
638
639 data_count = 0;
640 while ((port->state->xmit.head != temp_tail) &&
641 (data_count <= XMIT_BUFF_SZ)) {
642
643 ICOM_PORT->xmit_buf[data_count++] =
644 port->state->xmit.buf[temp_tail];
645
646 temp_tail++;
647 temp_tail &= (UART_XMIT_SIZE - 1);
648 }
649
650 if (data_count) {
651 ICOM_PORT->statStg->xmit[0].flags =
652 cpu_to_le16(SA_FLAGS_READY_TO_XMIT);
653 ICOM_PORT->statStg->xmit[0].leLength =
654 cpu_to_le16(data_count);
655 offset =
656 (unsigned long) &ICOM_PORT->statStg->xmit[0] -
657 (unsigned long) ICOM_PORT->statStg;
658 *ICOM_PORT->xmitRestart =
659 cpu_to_le32(ICOM_PORT->statStg_pci + offset);
660 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
661 writeb(cmdReg | CMD_XMIT_RCV_ENABLE,
662 &ICOM_PORT->dram->CmdReg);
663 writeb(START_XMIT, &ICOM_PORT->dram->StartXmitCmd);
664 trace(ICOM_PORT, "WRITE_START", data_count);
665 /* write flush */
666 readb(&ICOM_PORT->dram->StartXmitCmd);
667 }
668
669 return data_count;
670}
671
672static inline void check_modem_status(struct icom_port *icom_port)
673{
674 static char old_status = 0;
675 char delta_status;
676 unsigned char status;
677
678 spin_lock(&icom_port->uart_port.lock);
679
680 /*modem input register */
681 status = readb(&icom_port->dram->isr);
682 trace(icom_port, "CHECK_MODEM", status);
683 delta_status = status ^ old_status;
684 if (delta_status) {
685 if (delta_status & ICOM_RI)
686 icom_port->uart_port.icount.rng++;
687 if (delta_status & ICOM_DSR)
688 icom_port->uart_port.icount.dsr++;
689 if (delta_status & ICOM_DCD)
690 uart_handle_dcd_change(&icom_port->uart_port,
691 delta_status & ICOM_DCD);
692 if (delta_status & ICOM_CTS)
693 uart_handle_cts_change(&icom_port->uart_port,
694 delta_status & ICOM_CTS);
695
696 wake_up_interruptible(&icom_port->uart_port.state->
697 port.delta_msr_wait);
698 old_status = status;
699 }
700 spin_unlock(&icom_port->uart_port.lock);
701}
702
703static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port)
704{
705 unsigned short int count;
706 int i;
707
708 if (port_int_reg & (INT_XMIT_COMPLETED)) {
709 trace(icom_port, "XMIT_COMPLETE", 0);
710
711 /* clear buffer in use bit */
712 icom_port->statStg->xmit[0].flags &=
713 cpu_to_le16(~SA_FLAGS_READY_TO_XMIT);
714
715 count = (unsigned short int)
716 cpu_to_le16(icom_port->statStg->xmit[0].leLength);
717 icom_port->uart_port.icount.tx += count;
718
719 for (i=0; i<count &&
720 !uart_circ_empty(&icom_port->uart_port.state->xmit); i++) {
721
722 icom_port->uart_port.state->xmit.tail++;
723 icom_port->uart_port.state->xmit.tail &=
724 (UART_XMIT_SIZE - 1);
725 }
726
727 if (!icom_write(&icom_port->uart_port))
728 /* activate write queue */
729 uart_write_wakeup(&icom_port->uart_port);
730 } else
731 trace(icom_port, "XMIT_DISABLED", 0);
732}
733
734static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
735{
736 short int count, rcv_buff;
737 struct tty_struct *tty = icom_port->uart_port.state->port.tty;
738 unsigned short int status;
739 struct uart_icount *icount;
740 unsigned long offset;
741 unsigned char flag;
742
743 trace(icom_port, "RCV_COMPLETE", 0);
744 rcv_buff = icom_port->next_rcv;
745
746 status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
747 while (status & SA_FL_RCV_DONE) {
748 int first = -1;
749
750 trace(icom_port, "FID_STATUS", status);
751 count = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].leLength);
752
753 trace(icom_port, "RCV_COUNT", count);
754
755 trace(icom_port, "REAL_COUNT", count);
756
757 offset =
758 cpu_to_le32(icom_port->statStg->rcv[rcv_buff].leBuffer) -
759 icom_port->recv_buf_pci;
760
761 /* Block copy all but the last byte as this may have status */
762 if (count > 0) {
763 first = icom_port->recv_buf[offset];
764 tty_insert_flip_string(tty, icom_port->recv_buf + offset, count - 1);
765 }
766
767 icount = &icom_port->uart_port.icount;
768 icount->rx += count;
769
770 /* Break detect logic */
771 if ((status & SA_FLAGS_FRAME_ERROR)
772 && first == 0) {
773 status &= ~SA_FLAGS_FRAME_ERROR;
774 status |= SA_FLAGS_BREAK_DET;
775 trace(icom_port, "BREAK_DET", 0);
776 }
777
778 flag = TTY_NORMAL;
779
780 if (status &
781 (SA_FLAGS_BREAK_DET | SA_FLAGS_PARITY_ERROR |
782 SA_FLAGS_FRAME_ERROR | SA_FLAGS_OVERRUN)) {
783
784 if (status & SA_FLAGS_BREAK_DET)
785 icount->brk++;
786 if (status & SA_FLAGS_PARITY_ERROR)
787 icount->parity++;
788 if (status & SA_FLAGS_FRAME_ERROR)
789 icount->frame++;
790 if (status & SA_FLAGS_OVERRUN)
791 icount->overrun++;
792
793 /*
794 * Now check to see if character should be
795 * ignored, and mask off conditions which
796 * should be ignored.
797 */
798 if (status & icom_port->ignore_status_mask) {
799 trace(icom_port, "IGNORE_CHAR", 0);
800 goto ignore_char;
801 }
802
803 status &= icom_port->read_status_mask;
804
805 if (status & SA_FLAGS_BREAK_DET) {
806 flag = TTY_BREAK;
807 } else if (status & SA_FLAGS_PARITY_ERROR) {
808 trace(icom_port, "PARITY_ERROR", 0);
809 flag = TTY_PARITY;
810 } else if (status & SA_FLAGS_FRAME_ERROR)
811 flag = TTY_FRAME;
812
813 }
814
815 tty_insert_flip_char(tty, *(icom_port->recv_buf + offset + count - 1), flag);
816
817 if (status & SA_FLAGS_OVERRUN)
818 /*
819 * Overrun is special, since it's
820 * reported immediately, and doesn't
821 * affect the current character
822 */
823 tty_insert_flip_char(tty, 0, TTY_OVERRUN);
824ignore_char:
825 icom_port->statStg->rcv[rcv_buff].flags = 0;
826 icom_port->statStg->rcv[rcv_buff].leLength = 0;
827 icom_port->statStg->rcv[rcv_buff].WorkingLength =
828 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
829
830 rcv_buff++;
831 if (rcv_buff == NUM_RBUFFS)
832 rcv_buff = 0;
833
834 status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
835 }
836 icom_port->next_rcv = rcv_buff;
837 tty_flip_buffer_push(tty);
838}
839
840static void process_interrupt(u16 port_int_reg,
841 struct icom_port *icom_port)
842{
843
844 spin_lock(&icom_port->uart_port.lock);
845 trace(icom_port, "INTERRUPT", port_int_reg);
846
847 if (port_int_reg & (INT_XMIT_COMPLETED | INT_XMIT_DISABLED))
848 xmit_interrupt(port_int_reg, icom_port);
849
850 if (port_int_reg & INT_RCV_COMPLETED)
851 recv_interrupt(port_int_reg, icom_port);
852
853 spin_unlock(&icom_port->uart_port.lock);
854}
855
856static irqreturn_t icom_interrupt(int irq, void *dev_id)
857{
858 void __iomem * int_reg;
859 u32 adapter_interrupts;
860 u16 port_int_reg;
861 struct icom_adapter *icom_adapter;
862 struct icom_port *icom_port;
863
864 /* find icom_port for this interrupt */
865 icom_adapter = (struct icom_adapter *) dev_id;
866
867 if (icom_adapter->version == ADAPTER_V2) {
868 int_reg = icom_adapter->base_addr + 0x8024;
869
870 adapter_interrupts = readl(int_reg);
871
872 if (adapter_interrupts & 0x00003FFF) {
873 /* port 2 interrupt, NOTE: for all ADAPTER_V2, port 2 will be active */
874 icom_port = &icom_adapter->port_info[2];
875 port_int_reg = (u16) adapter_interrupts;
876 process_interrupt(port_int_reg, icom_port);
877 check_modem_status(icom_port);
878 }
879 if (adapter_interrupts & 0x3FFF0000) {
880 /* port 3 interrupt */
881 icom_port = &icom_adapter->port_info[3];
882 if (icom_port->status == ICOM_PORT_ACTIVE) {
883 port_int_reg =
884 (u16) (adapter_interrupts >> 16);
885 process_interrupt(port_int_reg, icom_port);
886 check_modem_status(icom_port);
887 }
888 }
889
890 /* Clear out any pending interrupts */
891 writel(adapter_interrupts, int_reg);
892
893 int_reg = icom_adapter->base_addr + 0x8004;
894 } else {
895 int_reg = icom_adapter->base_addr + 0x4004;
896 }
897
898 adapter_interrupts = readl(int_reg);
899
900 if (adapter_interrupts & 0x00003FFF) {
901 /* port 0 interrupt, NOTE: for all adapters, port 0 will be active */
902 icom_port = &icom_adapter->port_info[0];
903 port_int_reg = (u16) adapter_interrupts;
904 process_interrupt(port_int_reg, icom_port);
905 check_modem_status(icom_port);
906 }
907 if (adapter_interrupts & 0x3FFF0000) {
908 /* port 1 interrupt */
909 icom_port = &icom_adapter->port_info[1];
910 if (icom_port->status == ICOM_PORT_ACTIVE) {
911 port_int_reg = (u16) (adapter_interrupts >> 16);
912 process_interrupt(port_int_reg, icom_port);
913 check_modem_status(icom_port);
914 }
915 }
916
917 /* Clear out any pending interrupts */
918 writel(adapter_interrupts, int_reg);
919
920 /* flush the write */
921 adapter_interrupts = readl(int_reg);
922
923 return IRQ_HANDLED;
924}
925
926/*
927 * ------------------------------------------------------------------
928 * Begin serial-core API
929 * ------------------------------------------------------------------
930 */
931static unsigned int icom_tx_empty(struct uart_port *port)
932{
933 int ret;
934 unsigned long flags;
935
936 spin_lock_irqsave(&port->lock, flags);
937 if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
938 SA_FLAGS_READY_TO_XMIT)
939 ret = TIOCSER_TEMT;
940 else
941 ret = 0;
942
943 spin_unlock_irqrestore(&port->lock, flags);
944 return ret;
945}
946
947static void icom_set_mctrl(struct uart_port *port, unsigned int mctrl)
948{
949 unsigned char local_osr;
950
951 trace(ICOM_PORT, "SET_MODEM", 0);
952 local_osr = readb(&ICOM_PORT->dram->osr);
953
954 if (mctrl & TIOCM_RTS) {
955 trace(ICOM_PORT, "RAISE_RTS", 0);
956 local_osr |= ICOM_RTS;
957 } else {
958 trace(ICOM_PORT, "LOWER_RTS", 0);
959 local_osr &= ~ICOM_RTS;
960 }
961
962 if (mctrl & TIOCM_DTR) {
963 trace(ICOM_PORT, "RAISE_DTR", 0);
964 local_osr |= ICOM_DTR;
965 } else {
966 trace(ICOM_PORT, "LOWER_DTR", 0);
967 local_osr &= ~ICOM_DTR;
968 }
969
970 writeb(local_osr, &ICOM_PORT->dram->osr);
971}
972
973static unsigned int icom_get_mctrl(struct uart_port *port)
974{
975 unsigned char status;
976 unsigned int result;
977
978 trace(ICOM_PORT, "GET_MODEM", 0);
979
980 status = readb(&ICOM_PORT->dram->isr);
981
982 result = ((status & ICOM_DCD) ? TIOCM_CAR : 0)
983 | ((status & ICOM_RI) ? TIOCM_RNG : 0)
984 | ((status & ICOM_DSR) ? TIOCM_DSR : 0)
985 | ((status & ICOM_CTS) ? TIOCM_CTS : 0);
986 return result;
987}
988
989static void icom_stop_tx(struct uart_port *port)
990{
991 unsigned char cmdReg;
992
993 trace(ICOM_PORT, "STOP", 0);
994 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
995 writeb(cmdReg | CMD_HOLD_XMIT, &ICOM_PORT->dram->CmdReg);
996}
997
998static void icom_start_tx(struct uart_port *port)
999{
1000 unsigned char cmdReg;
1001
1002 trace(ICOM_PORT, "START", 0);
1003 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1004 if ((cmdReg & CMD_HOLD_XMIT) == CMD_HOLD_XMIT)
1005 writeb(cmdReg & ~CMD_HOLD_XMIT,
1006 &ICOM_PORT->dram->CmdReg);
1007
1008 icom_write(port);
1009}
1010
1011static void icom_send_xchar(struct uart_port *port, char ch)
1012{
1013 unsigned char xdata;
1014 int index;
1015 unsigned long flags;
1016
1017 trace(ICOM_PORT, "SEND_XCHAR", ch);
1018
1019 /* wait .1 sec to send char */
1020 for (index = 0; index < 10; index++) {
1021 spin_lock_irqsave(&port->lock, flags);
1022 xdata = readb(&ICOM_PORT->dram->xchar);
1023 if (xdata == 0x00) {
1024 trace(ICOM_PORT, "QUICK_WRITE", 0);
1025 writeb(ch, &ICOM_PORT->dram->xchar);
1026
1027 /* flush write operation */
1028 xdata = readb(&ICOM_PORT->dram->xchar);
1029 spin_unlock_irqrestore(&port->lock, flags);
1030 break;
1031 }
1032 spin_unlock_irqrestore(&port->lock, flags);
1033 msleep(10);
1034 }
1035}
1036
1037static void icom_stop_rx(struct uart_port *port)
1038{
1039 unsigned char cmdReg;
1040
1041 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1042 writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1043}
1044
1045static void icom_enable_ms(struct uart_port *port)
1046{
1047 /* no-op */
1048}
1049
1050static void icom_break(struct uart_port *port, int break_state)
1051{
1052 unsigned char cmdReg;
1053 unsigned long flags;
1054
1055 spin_lock_irqsave(&port->lock, flags);
1056 trace(ICOM_PORT, "BREAK", 0);
1057 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1058 if (break_state == -1) {
1059 writeb(cmdReg | CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
1060 } else {
1061 writeb(cmdReg & ~CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
1062 }
1063 spin_unlock_irqrestore(&port->lock, flags);
1064}
1065
1066static int icom_open(struct uart_port *port)
1067{
1068 int retval;
1069
1070 kref_get(&ICOM_PORT->adapter->kref);
1071 retval = startup(ICOM_PORT);
1072
1073 if (retval) {
1074 kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
1075 trace(ICOM_PORT, "STARTUP_ERROR", 0);
1076 return retval;
1077 }
1078
1079 return 0;
1080}
1081
1082static void icom_close(struct uart_port *port)
1083{
1084 unsigned char cmdReg;
1085
1086 trace(ICOM_PORT, "CLOSE", 0);
1087
1088 /* stop receiver */
1089 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1090 writeb(cmdReg & (unsigned char) ~CMD_RCV_ENABLE,
1091 &ICOM_PORT->dram->CmdReg);
1092
1093 shutdown(ICOM_PORT);
1094
1095 kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
1096}
1097
1098static void icom_set_termios(struct uart_port *port,
1099 struct ktermios *termios,
1100 struct ktermios *old_termios)
1101{
1102 int baud;
1103 unsigned cflag, iflag;
1104 char new_config2;
1105 char new_config3 = 0;
1106 char tmp_byte;
1107 int index;
1108 int rcv_buff, xmit_buff;
1109 unsigned long offset;
1110 unsigned long flags;
1111
1112 spin_lock_irqsave(&port->lock, flags);
1113 trace(ICOM_PORT, "CHANGE_SPEED", 0);
1114
1115 cflag = termios->c_cflag;
1116 iflag = termios->c_iflag;
1117
1118 new_config2 = ICOM_ACFG_DRIVE1;
1119
1120 /* byte size and parity */
1121 switch (cflag & CSIZE) {
1122 case CS5: /* 5 bits/char */
1123 new_config2 |= ICOM_ACFG_5BPC;
1124 break;
1125 case CS6: /* 6 bits/char */
1126 new_config2 |= ICOM_ACFG_6BPC;
1127 break;
1128 case CS7: /* 7 bits/char */
1129 new_config2 |= ICOM_ACFG_7BPC;
1130 break;
1131 case CS8: /* 8 bits/char */
1132 new_config2 |= ICOM_ACFG_8BPC;
1133 break;
1134 default:
1135 break;
1136 }
1137 if (cflag & CSTOPB) {
1138 /* 2 stop bits */
1139 new_config2 |= ICOM_ACFG_2STOP_BIT;
1140 }
1141 if (cflag & PARENB) {
1142 /* parity bit enabled */
1143 new_config2 |= ICOM_ACFG_PARITY_ENAB;
1144 trace(ICOM_PORT, "PARENB", 0);
1145 }
1146 if (cflag & PARODD) {
1147 /* odd parity */
1148 new_config2 |= ICOM_ACFG_PARITY_ODD;
1149 trace(ICOM_PORT, "PARODD", 0);
1150 }
1151
1152 /* Determine divisor based on baud rate */
1153 baud = uart_get_baud_rate(port, termios, old_termios,
1154 icom_acfg_baud[0],
1155 icom_acfg_baud[BAUD_TABLE_LIMIT]);
1156 if (!baud)
1157 baud = 9600; /* B0 transition handled in rs_set_termios */
1158
1159 for (index = 0; index < BAUD_TABLE_LIMIT; index++) {
1160 if (icom_acfg_baud[index] == baud) {
1161 new_config3 = index;
1162 break;
1163 }
1164 }
1165
1166 uart_update_timeout(port, cflag, baud);
1167
1168 /* CTS flow control flag and modem status interrupts */
1169 tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
1170 if (cflag & CRTSCTS)
1171 tmp_byte |= HDLC_HDW_FLOW;
1172 else
1173 tmp_byte &= ~HDLC_HDW_FLOW;
1174 writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
1175
1176 /*
1177 * Set up parity check flag
1178 */
1179 ICOM_PORT->read_status_mask = SA_FLAGS_OVERRUN | SA_FL_RCV_DONE;
1180 if (iflag & INPCK)
1181 ICOM_PORT->read_status_mask |=
1182 SA_FLAGS_FRAME_ERROR | SA_FLAGS_PARITY_ERROR;
1183
1184 if ((iflag & BRKINT) || (iflag & PARMRK))
1185 ICOM_PORT->read_status_mask |= SA_FLAGS_BREAK_DET;
1186
1187 /*
1188 * Characters to ignore
1189 */
1190 ICOM_PORT->ignore_status_mask = 0;
1191 if (iflag & IGNPAR)
1192 ICOM_PORT->ignore_status_mask |=
1193 SA_FLAGS_PARITY_ERROR | SA_FLAGS_FRAME_ERROR;
1194 if (iflag & IGNBRK) {
1195 ICOM_PORT->ignore_status_mask |= SA_FLAGS_BREAK_DET;
1196 /*
1197 * If we're ignore parity and break indicators, ignore
1198 * overruns too. (For real raw support).
1199 */
1200 if (iflag & IGNPAR)
1201 ICOM_PORT->ignore_status_mask |= SA_FLAGS_OVERRUN;
1202 }
1203
1204 /*
1205 * !!! ignore all characters if CREAD is not set
1206 */
1207 if ((cflag & CREAD) == 0)
1208 ICOM_PORT->ignore_status_mask |= SA_FL_RCV_DONE;
1209
1210 /* Turn off Receiver to prepare for reset */
1211 writeb(CMD_RCV_DISABLE, &ICOM_PORT->dram->CmdReg);
1212
1213 for (index = 0; index < 10; index++) {
1214 if (readb(&ICOM_PORT->dram->PrevCmdReg) == 0x00) {
1215 break;
1216 }
1217 }
1218
1219 /* clear all current buffers of data */
1220 for (rcv_buff = 0; rcv_buff < NUM_RBUFFS; rcv_buff++) {
1221 ICOM_PORT->statStg->rcv[rcv_buff].flags = 0;
1222 ICOM_PORT->statStg->rcv[rcv_buff].leLength = 0;
1223 ICOM_PORT->statStg->rcv[rcv_buff].WorkingLength =
1224 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
1225 }
1226
1227 for (xmit_buff = 0; xmit_buff < NUM_XBUFFS; xmit_buff++) {
1228 ICOM_PORT->statStg->xmit[xmit_buff].flags = 0;
1229 }
1230
1231 /* activate changes and start xmit and receiver here */
1232 /* Enable the receiver */
1233 writeb(new_config3, &(ICOM_PORT->dram->async_config3));
1234 writeb(new_config2, &(ICOM_PORT->dram->async_config2));
1235 tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
1236 tmp_byte |= HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL;
1237 writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
1238 writeb(0x04, &(ICOM_PORT->dram->FlagFillIdleTimer)); /* 0.5 seconds */
1239 writeb(0xFF, &(ICOM_PORT->dram->ier)); /* enable modem signal interrupts */
1240
1241 /* reset processor */
1242 writeb(CMD_RESTART, &ICOM_PORT->dram->CmdReg);
1243
1244 for (index = 0; index < 10; index++) {
1245 if (readb(&ICOM_PORT->dram->CmdReg) == 0x00) {
1246 break;
1247 }
1248 }
1249
1250 /* Enable Transmitter and Receiver */
1251 offset =
1252 (unsigned long) &ICOM_PORT->statStg->rcv[0] -
1253 (unsigned long) ICOM_PORT->statStg;
1254 writel(ICOM_PORT->statStg_pci + offset,
1255 &ICOM_PORT->dram->RcvStatusAddr);
1256 ICOM_PORT->next_rcv = 0;
1257 ICOM_PORT->put_length = 0;
1258 *ICOM_PORT->xmitRestart = 0;
1259 writel(ICOM_PORT->xmitRestart_pci,
1260 &ICOM_PORT->dram->XmitStatusAddr);
1261 trace(ICOM_PORT, "XR_ENAB", 0);
1262 writeb(CMD_XMIT_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1263
1264 spin_unlock_irqrestore(&port->lock, flags);
1265}
1266
1267static const char *icom_type(struct uart_port *port)
1268{
1269 return "icom";
1270}
1271
1272static void icom_release_port(struct uart_port *port)
1273{
1274}
1275
1276static int icom_request_port(struct uart_port *port)
1277{
1278 return 0;
1279}
1280
1281static void icom_config_port(struct uart_port *port, int flags)
1282{
1283 port->type = PORT_ICOM;
1284}
1285
1286static struct uart_ops icom_ops = {
1287 .tx_empty = icom_tx_empty,
1288 .set_mctrl = icom_set_mctrl,
1289 .get_mctrl = icom_get_mctrl,
1290 .stop_tx = icom_stop_tx,
1291 .start_tx = icom_start_tx,
1292 .send_xchar = icom_send_xchar,
1293 .stop_rx = icom_stop_rx,
1294 .enable_ms = icom_enable_ms,
1295 .break_ctl = icom_break,
1296 .startup = icom_open,
1297 .shutdown = icom_close,
1298 .set_termios = icom_set_termios,
1299 .type = icom_type,
1300 .release_port = icom_release_port,
1301 .request_port = icom_request_port,
1302 .config_port = icom_config_port,
1303};
1304
1305#define ICOM_CONSOLE NULL
1306
1307static struct uart_driver icom_uart_driver = {
1308 .owner = THIS_MODULE,
1309 .driver_name = ICOM_DRIVER_NAME,
1310 .dev_name = "ttyA",
1311 .major = ICOM_MAJOR,
1312 .minor = ICOM_MINOR_START,
1313 .nr = NR_PORTS,
1314 .cons = ICOM_CONSOLE,
1315};
1316
1317static int __devinit icom_init_ports(struct icom_adapter *icom_adapter)
1318{
1319 u32 subsystem_id = icom_adapter->subsystem_id;
1320 int i;
1321 struct icom_port *icom_port;
1322
1323 if (icom_adapter->version == ADAPTER_V1) {
1324 icom_adapter->numb_ports = 2;
1325
1326 for (i = 0; i < 2; i++) {
1327 icom_port = &icom_adapter->port_info[i];
1328 icom_port->port = i;
1329 icom_port->status = ICOM_PORT_ACTIVE;
1330 icom_port->imbed_modem = ICOM_UNKNOWN;
1331 }
1332 } else {
1333 if (subsystem_id == PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL) {
1334 icom_adapter->numb_ports = 4;
1335
1336 for (i = 0; i < 4; i++) {
1337 icom_port = &icom_adapter->port_info[i];
1338
1339 icom_port->port = i;
1340 icom_port->status = ICOM_PORT_ACTIVE;
1341 icom_port->imbed_modem = ICOM_IMBED_MODEM;
1342 }
1343 } else {
1344 icom_adapter->numb_ports = 4;
1345
1346 icom_adapter->port_info[0].port = 0;
1347 icom_adapter->port_info[0].status = ICOM_PORT_ACTIVE;
1348
1349 if (subsystem_id ==
1350 PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM) {
1351 icom_adapter->port_info[0].imbed_modem = ICOM_IMBED_MODEM;
1352 } else {
1353 icom_adapter->port_info[0].imbed_modem = ICOM_RVX;
1354 }
1355
1356 icom_adapter->port_info[1].status = ICOM_PORT_OFF;
1357
1358 icom_adapter->port_info[2].port = 2;
1359 icom_adapter->port_info[2].status = ICOM_PORT_ACTIVE;
1360 icom_adapter->port_info[2].imbed_modem = ICOM_RVX;
1361 icom_adapter->port_info[3].status = ICOM_PORT_OFF;
1362 }
1363 }
1364
1365 return 0;
1366}
1367
1368static void icom_port_active(struct icom_port *icom_port, struct icom_adapter *icom_adapter, int port_num)
1369{
1370 if (icom_adapter->version == ADAPTER_V1) {
1371 icom_port->global_reg = icom_adapter->base_addr + 0x4000;
1372 icom_port->int_reg = icom_adapter->base_addr +
1373 0x4004 + 2 - 2 * port_num;
1374 } else {
1375 icom_port->global_reg = icom_adapter->base_addr + 0x8000;
1376 if (icom_port->port < 2)
1377 icom_port->int_reg = icom_adapter->base_addr +
1378 0x8004 + 2 - 2 * icom_port->port;
1379 else
1380 icom_port->int_reg = icom_adapter->base_addr +
1381 0x8024 + 2 - 2 * (icom_port->port - 2);
1382 }
1383}
1384static int __devinit icom_load_ports(struct icom_adapter *icom_adapter)
1385{
1386 struct icom_port *icom_port;
1387 int port_num;
1388
1389 for (port_num = 0; port_num < icom_adapter->numb_ports; port_num++) {
1390
1391 icom_port = &icom_adapter->port_info[port_num];
1392
1393 if (icom_port->status == ICOM_PORT_ACTIVE) {
1394 icom_port_active(icom_port, icom_adapter, port_num);
1395 icom_port->dram = icom_adapter->base_addr +
1396 0x2000 * icom_port->port;
1397
1398 icom_port->adapter = icom_adapter;
1399
1400 /* get port memory */
1401 if (get_port_memory(icom_port) != 0) {
1402 dev_err(&icom_port->adapter->pci_dev->dev,
1403 "Memory allocation for port FAILED\n");
1404 }
1405 }
1406 }
1407 return 0;
1408}
1409
1410static int __devinit icom_alloc_adapter(struct icom_adapter
1411 **icom_adapter_ref)
1412{
1413 int adapter_count = 0;
1414 struct icom_adapter *icom_adapter;
1415 struct icom_adapter *cur_adapter_entry;
1416 struct list_head *tmp;
1417
1418 icom_adapter = (struct icom_adapter *)
1419 kzalloc(sizeof(struct icom_adapter), GFP_KERNEL);
1420
1421 if (!icom_adapter) {
1422 return -ENOMEM;
1423 }
1424
1425 list_for_each(tmp, &icom_adapter_head) {
1426 cur_adapter_entry =
1427 list_entry(tmp, struct icom_adapter,
1428 icom_adapter_entry);
1429 if (cur_adapter_entry->index != adapter_count) {
1430 break;
1431 }
1432 adapter_count++;
1433 }
1434
1435 icom_adapter->index = adapter_count;
1436 list_add_tail(&icom_adapter->icom_adapter_entry, tmp);
1437
1438 *icom_adapter_ref = icom_adapter;
1439 return 0;
1440}
1441
1442static void icom_free_adapter(struct icom_adapter *icom_adapter)
1443{
1444 list_del(&icom_adapter->icom_adapter_entry);
1445 kfree(icom_adapter);
1446}
1447
1448static void icom_remove_adapter(struct icom_adapter *icom_adapter)
1449{
1450 struct icom_port *icom_port;
1451 int index;
1452
1453 for (index = 0; index < icom_adapter->numb_ports; index++) {
1454 icom_port = &icom_adapter->port_info[index];
1455
1456 if (icom_port->status == ICOM_PORT_ACTIVE) {
1457 dev_info(&icom_adapter->pci_dev->dev,
1458 "Device removed\n");
1459
1460 uart_remove_one_port(&icom_uart_driver,
1461 &icom_port->uart_port);
1462
1463 /* be sure that DTR and RTS are dropped */
1464 writeb(0x00, &icom_port->dram->osr);
1465
1466 /* Wait 0.1 Sec for simple Init to complete */
1467 msleep(100);
1468
1469 /* Stop proccessor */
1470 stop_processor(icom_port);
1471
1472 free_port_memory(icom_port);
1473 }
1474 }
1475
1476 free_irq(icom_adapter->pci_dev->irq, (void *) icom_adapter);
1477 iounmap(icom_adapter->base_addr);
1478 pci_release_regions(icom_adapter->pci_dev);
1479 icom_free_adapter(icom_adapter);
1480}
1481
1482static void icom_kref_release(struct kref *kref)
1483{
1484 struct icom_adapter *icom_adapter;
1485
1486 icom_adapter = to_icom_adapter(kref);
1487 icom_remove_adapter(icom_adapter);
1488}
1489
1490static int __devinit icom_probe(struct pci_dev *dev,
1491 const struct pci_device_id *ent)
1492{
1493 int index;
1494 unsigned int command_reg;
1495 int retval;
1496 struct icom_adapter *icom_adapter;
1497 struct icom_port *icom_port;
1498
1499 retval = pci_enable_device(dev);
1500 if (retval) {
1501 dev_err(&dev->dev, "Device enable FAILED\n");
1502 return retval;
1503 }
1504
1505 if ( (retval = pci_request_regions(dev, "icom"))) {
1506 dev_err(&dev->dev, "pci_request_regions FAILED\n");
1507 pci_disable_device(dev);
1508 return retval;
1509 }
1510
1511 pci_set_master(dev);
1512
1513 if ( (retval = pci_read_config_dword(dev, PCI_COMMAND, &command_reg))) {
1514 dev_err(&dev->dev, "PCI Config read FAILED\n");
1515 return retval;
1516 }
1517
1518 pci_write_config_dword(dev, PCI_COMMAND,
1519 command_reg | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
1520 | PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
1521
1522 if (ent->driver_data == ADAPTER_V1) {
1523 pci_write_config_dword(dev, 0x44, 0x8300830A);
1524 } else {
1525 pci_write_config_dword(dev, 0x44, 0x42004200);
1526 pci_write_config_dword(dev, 0x48, 0x42004200);
1527 }
1528
1529
1530 retval = icom_alloc_adapter(&icom_adapter);
1531 if (retval) {
1532 dev_err(&dev->dev, "icom_alloc_adapter FAILED\n");
1533 retval = -EIO;
1534 goto probe_exit0;
1535 }
1536
1537 icom_adapter->base_addr_pci = pci_resource_start(dev, 0);
1538 icom_adapter->pci_dev = dev;
1539 icom_adapter->version = ent->driver_data;
1540 icom_adapter->subsystem_id = ent->subdevice;
1541
1542
1543 retval = icom_init_ports(icom_adapter);
1544 if (retval) {
1545 dev_err(&dev->dev, "Port configuration failed\n");
1546 goto probe_exit1;
1547 }
1548
1549 icom_adapter->base_addr = pci_ioremap_bar(dev, 0);
1550
1551 if (!icom_adapter->base_addr)
1552 goto probe_exit1;
1553
1554 /* save off irq and request irq line */
1555 if ( (retval = request_irq(dev->irq, icom_interrupt,
1556 IRQF_SHARED, ICOM_DRIVER_NAME,
1557 (void *) icom_adapter))) {
1558 goto probe_exit2;
1559 }
1560
1561 retval = icom_load_ports(icom_adapter);
1562
1563 for (index = 0; index < icom_adapter->numb_ports; index++) {
1564 icom_port = &icom_adapter->port_info[index];
1565
1566 if (icom_port->status == ICOM_PORT_ACTIVE) {
1567 icom_port->uart_port.irq = icom_port->adapter->pci_dev->irq;
1568 icom_port->uart_port.type = PORT_ICOM;
1569 icom_port->uart_port.iotype = UPIO_MEM;
1570 icom_port->uart_port.membase =
1571 (char *) icom_adapter->base_addr_pci;
1572 icom_port->uart_port.fifosize = 16;
1573 icom_port->uart_port.ops = &icom_ops;
1574 icom_port->uart_port.line =
1575 icom_port->port + icom_adapter->index * 4;
1576 if (uart_add_one_port (&icom_uart_driver, &icom_port->uart_port)) {
1577 icom_port->status = ICOM_PORT_OFF;
1578 dev_err(&dev->dev, "Device add failed\n");
1579 } else
1580 dev_info(&dev->dev, "Device added\n");
1581 }
1582 }
1583
1584 kref_init(&icom_adapter->kref);
1585 return 0;
1586
1587probe_exit2:
1588 iounmap(icom_adapter->base_addr);
1589probe_exit1:
1590 icom_free_adapter(icom_adapter);
1591
1592probe_exit0:
1593 pci_release_regions(dev);
1594 pci_disable_device(dev);
1595
1596 return retval;
1597}
1598
1599static void __devexit icom_remove(struct pci_dev *dev)
1600{
1601 struct icom_adapter *icom_adapter;
1602 struct list_head *tmp;
1603
1604 list_for_each(tmp, &icom_adapter_head) {
1605 icom_adapter = list_entry(tmp, struct icom_adapter,
1606 icom_adapter_entry);
1607 if (icom_adapter->pci_dev == dev) {
1608 kref_put(&icom_adapter->kref, icom_kref_release);
1609 return;
1610 }
1611 }
1612
1613 dev_err(&dev->dev, "Unable to find device to remove\n");
1614}
1615
1616static struct pci_driver icom_pci_driver = {
1617 .name = ICOM_DRIVER_NAME,
1618 .id_table = icom_pci_table,
1619 .probe = icom_probe,
1620 .remove = __devexit_p(icom_remove),
1621};
1622
1623static int __init icom_init(void)
1624{
1625 int ret;
1626
1627 spin_lock_init(&icom_lock);
1628
1629 ret = uart_register_driver(&icom_uart_driver);
1630 if (ret)
1631 return ret;
1632
1633 ret = pci_register_driver(&icom_pci_driver);
1634
1635 if (ret < 0)
1636 uart_unregister_driver(&icom_uart_driver);
1637
1638 return ret;
1639}
1640
1641static void __exit icom_exit(void)
1642{
1643 pci_unregister_driver(&icom_pci_driver);
1644 uart_unregister_driver(&icom_uart_driver);
1645}
1646
1647module_init(icom_init);
1648module_exit(icom_exit);
1649
1650MODULE_AUTHOR("Michael Anderson <mjanders@us.ibm.com>");
1651MODULE_DESCRIPTION("IBM iSeries Serial IOA driver");
1652MODULE_SUPPORTED_DEVICE
1653 ("IBM iSeries 2745, 2771, 2772, 2742, 2793 and 2805 Communications adapters");
1654MODULE_LICENSE("GPL");
1655MODULE_FIRMWARE("icom_call_setup.bin");
1656MODULE_FIRMWARE("icom_res_dce.bin");
1657MODULE_FIRMWARE("icom_asc.bin");