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1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * icom.c
4 *
5 * Copyright (C) 2001 IBM Corporation. All rights reserved.
6 *
7 * Serial device driver.
8 *
9 * Based on code from serial.c
10 */
11#include <linux/module.h>
12#include <linux/kernel.h>
13#include <linux/errno.h>
14#include <linux/signal.h>
15#include <linux/timer.h>
16#include <linux/interrupt.h>
17#include <linux/tty.h>
18#include <linux/termios.h>
19#include <linux/fs.h>
20#include <linux/tty_flip.h>
21#include <linux/serial.h>
22#include <linux/serial_reg.h>
23#include <linux/major.h>
24#include <linux/string.h>
25#include <linux/fcntl.h>
26#include <linux/ptrace.h>
27#include <linux/ioport.h>
28#include <linux/mm.h>
29#include <linux/slab.h>
30#include <linux/init.h>
31#include <linux/delay.h>
32#include <linux/pci.h>
33#include <linux/vmalloc.h>
34#include <linux/smp.h>
35#include <linux/spinlock.h>
36#include <linux/kref.h>
37#include <linux/firmware.h>
38#include <linux/bitops.h>
39
40#include <asm/io.h>
41#include <asm/irq.h>
42#include <linux/uaccess.h>
43
44#include "icom.h"
45
46/*#define ICOM_TRACE enable port trace capabilities */
47
48#define ICOM_DRIVER_NAME "icom"
49#define ICOM_VERSION_STR "1.3.1"
50#define NR_PORTS 128
51#define ICOM_PORT ((struct icom_port *)port)
52#define to_icom_adapter(d) container_of(d, struct icom_adapter, kref)
53
54static const struct pci_device_id icom_pci_table[] = {
55 {
56 .vendor = PCI_VENDOR_ID_IBM,
57 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_1,
58 .subvendor = PCI_ANY_ID,
59 .subdevice = PCI_ANY_ID,
60 .driver_data = ADAPTER_V1,
61 },
62 {
63 .vendor = PCI_VENDOR_ID_IBM,
64 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
65 .subvendor = PCI_VENDOR_ID_IBM,
66 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_TWO_PORTS_RVX,
67 .driver_data = ADAPTER_V2,
68 },
69 {
70 .vendor = PCI_VENDOR_ID_IBM,
71 .device = PCI_DEVICE_ID_IBM_ICOM_DEV_ID_2,
72 .subvendor = PCI_VENDOR_ID_IBM,
73 .subdevice = PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM,
74 .driver_data = ADAPTER_V2,
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_FOUR_PORT_MODEL,
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_PCIE,
88 .driver_data = ADAPTER_V2,
89 },
90 {}
91};
92
93static struct lookup_proc_table start_proc[4] = {
94 {NULL, ICOM_CONTROL_START_A},
95 {NULL, ICOM_CONTROL_START_B},
96 {NULL, ICOM_CONTROL_START_C},
97 {NULL, ICOM_CONTROL_START_D}
98};
99
100
101static struct lookup_proc_table stop_proc[4] = {
102 {NULL, ICOM_CONTROL_STOP_A},
103 {NULL, ICOM_CONTROL_STOP_B},
104 {NULL, ICOM_CONTROL_STOP_C},
105 {NULL, ICOM_CONTROL_STOP_D}
106};
107
108static struct lookup_int_table int_mask_tbl[4] = {
109 {NULL, ICOM_INT_MASK_PRC_A},
110 {NULL, ICOM_INT_MASK_PRC_B},
111 {NULL, ICOM_INT_MASK_PRC_C},
112 {NULL, ICOM_INT_MASK_PRC_D},
113};
114
115
116MODULE_DEVICE_TABLE(pci, icom_pci_table);
117
118static LIST_HEAD(icom_adapter_head);
119
120/* spinlock for adapter initialization and changing adapter operations */
121static spinlock_t icom_lock;
122
123#ifdef ICOM_TRACE
124static inline void trace(struct icom_port *icom_port, char *trace_pt,
125 unsigned long trace_data)
126{
127 dev_info(&icom_port->adapter->pci_dev->dev, ":%d:%s - %lx\n",
128 icom_port->port, trace_pt, trace_data);
129}
130#else
131static inline void trace(struct icom_port *icom_port, char *trace_pt, unsigned long trace_data) {};
132#endif
133static void icom_kref_release(struct kref *kref);
134
135static void free_port_memory(struct icom_port *icom_port)
136{
137 struct pci_dev *dev = icom_port->adapter->pci_dev;
138
139 trace(icom_port, "RET_PORT_MEM", 0);
140 if (icom_port->recv_buf) {
141 pci_free_consistent(dev, 4096, icom_port->recv_buf,
142 icom_port->recv_buf_pci);
143 icom_port->recv_buf = NULL;
144 }
145 if (icom_port->xmit_buf) {
146 pci_free_consistent(dev, 4096, icom_port->xmit_buf,
147 icom_port->xmit_buf_pci);
148 icom_port->xmit_buf = NULL;
149 }
150 if (icom_port->statStg) {
151 pci_free_consistent(dev, 4096, icom_port->statStg,
152 icom_port->statStg_pci);
153 icom_port->statStg = NULL;
154 }
155
156 if (icom_port->xmitRestart) {
157 pci_free_consistent(dev, 4096, icom_port->xmitRestart,
158 icom_port->xmitRestart_pci);
159 icom_port->xmitRestart = NULL;
160 }
161}
162
163static int get_port_memory(struct icom_port *icom_port)
164{
165 int index;
166 unsigned long stgAddr;
167 unsigned long startStgAddr;
168 unsigned long offset;
169 struct pci_dev *dev = icom_port->adapter->pci_dev;
170
171 icom_port->xmit_buf =
172 pci_alloc_consistent(dev, 4096, &icom_port->xmit_buf_pci);
173 if (!icom_port->xmit_buf) {
174 dev_err(&dev->dev, "Can not allocate Transmit buffer\n");
175 return -ENOMEM;
176 }
177
178 trace(icom_port, "GET_PORT_MEM",
179 (unsigned long) icom_port->xmit_buf);
180
181 icom_port->recv_buf =
182 pci_alloc_consistent(dev, 4096, &icom_port->recv_buf_pci);
183 if (!icom_port->recv_buf) {
184 dev_err(&dev->dev, "Can not allocate Receive buffer\n");
185 free_port_memory(icom_port);
186 return -ENOMEM;
187 }
188 trace(icom_port, "GET_PORT_MEM",
189 (unsigned long) icom_port->recv_buf);
190
191 icom_port->statStg =
192 pci_alloc_consistent(dev, 4096, &icom_port->statStg_pci);
193 if (!icom_port->statStg) {
194 dev_err(&dev->dev, "Can not allocate Status buffer\n");
195 free_port_memory(icom_port);
196 return -ENOMEM;
197 }
198 trace(icom_port, "GET_PORT_MEM",
199 (unsigned long) icom_port->statStg);
200
201 icom_port->xmitRestart =
202 pci_alloc_consistent(dev, 4096, &icom_port->xmitRestart_pci);
203 if (!icom_port->xmitRestart) {
204 dev_err(&dev->dev,
205 "Can not allocate xmit Restart buffer\n");
206 free_port_memory(icom_port);
207 return -ENOMEM;
208 }
209
210 /* FODs: Frame Out Descriptor Queue, this is a FIFO queue that
211 indicates that frames are to be transmitted
212 */
213
214 stgAddr = (unsigned long) icom_port->statStg;
215 for (index = 0; index < NUM_XBUFFS; index++) {
216 trace(icom_port, "FOD_ADDR", stgAddr);
217 stgAddr = stgAddr + sizeof(icom_port->statStg->xmit[0]);
218 if (index < (NUM_XBUFFS - 1)) {
219 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
220 icom_port->statStg->xmit[index].leLengthASD =
221 (unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
222 trace(icom_port, "FOD_ADDR", stgAddr);
223 trace(icom_port, "FOD_XBUFF",
224 (unsigned long) icom_port->xmit_buf);
225 icom_port->statStg->xmit[index].leBuffer =
226 cpu_to_le32(icom_port->xmit_buf_pci);
227 } else if (index == (NUM_XBUFFS - 1)) {
228 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
229 icom_port->statStg->xmit[index].leLengthASD =
230 (unsigned short int) cpu_to_le16(XMIT_BUFF_SZ);
231 trace(icom_port, "FOD_XBUFF",
232 (unsigned long) icom_port->xmit_buf);
233 icom_port->statStg->xmit[index].leBuffer =
234 cpu_to_le32(icom_port->xmit_buf_pci);
235 } else {
236 memset(&icom_port->statStg->xmit[index], 0, sizeof(struct xmit_status_area));
237 }
238 }
239 /* FIDs */
240 startStgAddr = stgAddr;
241
242 /* fill in every entry, even if no buffer */
243 for (index = 0; index < NUM_RBUFFS; index++) {
244 trace(icom_port, "FID_ADDR", stgAddr);
245 stgAddr = stgAddr + sizeof(icom_port->statStg->rcv[0]);
246 icom_port->statStg->rcv[index].leLength = 0;
247 icom_port->statStg->rcv[index].WorkingLength =
248 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
249 if (index < (NUM_RBUFFS - 1) ) {
250 offset = stgAddr - (unsigned long) icom_port->statStg;
251 icom_port->statStg->rcv[index].leNext =
252 cpu_to_le32(icom_port-> statStg_pci + offset);
253 trace(icom_port, "FID_RBUFF",
254 (unsigned long) icom_port->recv_buf);
255 icom_port->statStg->rcv[index].leBuffer =
256 cpu_to_le32(icom_port->recv_buf_pci);
257 } else if (index == (NUM_RBUFFS -1) ) {
258 offset = startStgAddr - (unsigned long) icom_port->statStg;
259 icom_port->statStg->rcv[index].leNext =
260 cpu_to_le32(icom_port-> statStg_pci + offset);
261 trace(icom_port, "FID_RBUFF",
262 (unsigned long) icom_port->recv_buf + 2048);
263 icom_port->statStg->rcv[index].leBuffer =
264 cpu_to_le32(icom_port->recv_buf_pci + 2048);
265 } else {
266 icom_port->statStg->rcv[index].leNext = 0;
267 icom_port->statStg->rcv[index].leBuffer = 0;
268 }
269 }
270
271 return 0;
272}
273
274static void stop_processor(struct icom_port *icom_port)
275{
276 unsigned long temp;
277 unsigned long flags;
278 int port;
279
280 spin_lock_irqsave(&icom_lock, flags);
281
282 port = icom_port->port;
283 if (port >= ARRAY_SIZE(stop_proc)) {
284 dev_err(&icom_port->adapter->pci_dev->dev,
285 "Invalid port assignment\n");
286 goto unlock;
287 }
288
289 if (port == 0 || port == 1)
290 stop_proc[port].global_control_reg = &icom_port->global_reg->control;
291 else
292 stop_proc[port].global_control_reg = &icom_port->global_reg->control_2;
293
294 temp = readl(stop_proc[port].global_control_reg);
295 temp = (temp & ~start_proc[port].processor_id) | stop_proc[port].processor_id;
296 writel(temp, stop_proc[port].global_control_reg);
297
298 /* write flush */
299 readl(stop_proc[port].global_control_reg);
300
301unlock:
302 spin_unlock_irqrestore(&icom_lock, flags);
303}
304
305static void start_processor(struct icom_port *icom_port)
306{
307 unsigned long temp;
308 unsigned long flags;
309 int port;
310
311 spin_lock_irqsave(&icom_lock, flags);
312
313 port = icom_port->port;
314 if (port >= ARRAY_SIZE(start_proc)) {
315 dev_err(&icom_port->adapter->pci_dev->dev,
316 "Invalid port assignment\n");
317 goto unlock;
318 }
319
320 if (port == 0 || port == 1)
321 start_proc[port].global_control_reg = &icom_port->global_reg->control;
322 else
323 start_proc[port].global_control_reg = &icom_port->global_reg->control_2;
324
325 temp = readl(start_proc[port].global_control_reg);
326 temp = (temp & ~stop_proc[port].processor_id) | start_proc[port].processor_id;
327 writel(temp, start_proc[port].global_control_reg);
328
329 /* write flush */
330 readl(start_proc[port].global_control_reg);
331
332unlock:
333 spin_unlock_irqrestore(&icom_lock, flags);
334}
335
336static void load_code(struct icom_port *icom_port)
337{
338 const struct firmware *fw;
339 char __iomem *iram_ptr;
340 int index;
341 int status = 0;
342 void __iomem *dram_ptr = icom_port->dram;
343 dma_addr_t temp_pci;
344 unsigned char *new_page = NULL;
345 unsigned char cable_id = NO_CABLE;
346 struct pci_dev *dev = icom_port->adapter->pci_dev;
347
348 /* Clear out any pending interrupts */
349 writew(0x3FFF, icom_port->int_reg);
350
351 trace(icom_port, "CLEAR_INTERRUPTS", 0);
352
353 /* Stop processor */
354 stop_processor(icom_port);
355
356 /* Zero out DRAM */
357 memset_io(dram_ptr, 0, 512);
358
359 /* Load Call Setup into Adapter */
360 if (request_firmware(&fw, "icom_call_setup.bin", &dev->dev) < 0) {
361 dev_err(&dev->dev,"Unable to load icom_call_setup.bin firmware image\n");
362 status = -1;
363 goto load_code_exit;
364 }
365
366 if (fw->size > ICOM_DCE_IRAM_OFFSET) {
367 dev_err(&dev->dev, "Invalid firmware image for icom_call_setup.bin found.\n");
368 release_firmware(fw);
369 status = -1;
370 goto load_code_exit;
371 }
372
373 iram_ptr = (char __iomem *)icom_port->dram + ICOM_IRAM_OFFSET;
374 for (index = 0; index < fw->size; index++)
375 writeb(fw->data[index], &iram_ptr[index]);
376
377 release_firmware(fw);
378
379 /* Load Resident DCE portion of Adapter */
380 if (request_firmware(&fw, "icom_res_dce.bin", &dev->dev) < 0) {
381 dev_err(&dev->dev,"Unable to load icom_res_dce.bin firmware image\n");
382 status = -1;
383 goto load_code_exit;
384 }
385
386 if (fw->size > ICOM_IRAM_SIZE) {
387 dev_err(&dev->dev, "Invalid firmware image for icom_res_dce.bin found.\n");
388 release_firmware(fw);
389 status = -1;
390 goto load_code_exit;
391 }
392
393 iram_ptr = (char __iomem *) icom_port->dram + ICOM_IRAM_OFFSET;
394 for (index = ICOM_DCE_IRAM_OFFSET; index < fw->size; index++)
395 writeb(fw->data[index], &iram_ptr[index]);
396
397 release_firmware(fw);
398
399 /* Set Hardware level */
400 if (icom_port->adapter->version == ADAPTER_V2)
401 writeb(V2_HARDWARE, &(icom_port->dram->misc_flags));
402
403 /* Start the processor in Adapter */
404 start_processor(icom_port);
405
406 writeb((HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL),
407 &(icom_port->dram->HDLCConfigReg));
408 writeb(0x04, &(icom_port->dram->FlagFillIdleTimer)); /* 0.5 seconds */
409 writeb(0x00, &(icom_port->dram->CmdReg));
410 writeb(0x10, &(icom_port->dram->async_config3));
411 writeb((ICOM_ACFG_DRIVE1 | ICOM_ACFG_NO_PARITY | ICOM_ACFG_8BPC |
412 ICOM_ACFG_1STOP_BIT), &(icom_port->dram->async_config2));
413
414 /*Set up data in icom DRAM to indicate where personality
415 *code is located and its length.
416 */
417 new_page = pci_alloc_consistent(dev, 4096, &temp_pci);
418
419 if (!new_page) {
420 dev_err(&dev->dev, "Can not allocate DMA buffer\n");
421 status = -1;
422 goto load_code_exit;
423 }
424
425 if (request_firmware(&fw, "icom_asc.bin", &dev->dev) < 0) {
426 dev_err(&dev->dev,"Unable to load icom_asc.bin firmware image\n");
427 status = -1;
428 goto load_code_exit;
429 }
430
431 if (fw->size > ICOM_DCE_IRAM_OFFSET) {
432 dev_err(&dev->dev, "Invalid firmware image for icom_asc.bin found.\n");
433 release_firmware(fw);
434 status = -1;
435 goto load_code_exit;
436 }
437
438 for (index = 0; index < fw->size; index++)
439 new_page[index] = fw->data[index];
440
441 writeb((char) ((fw->size + 16)/16), &icom_port->dram->mac_length);
442 writel(temp_pci, &icom_port->dram->mac_load_addr);
443
444 release_firmware(fw);
445
446 /*Setting the syncReg to 0x80 causes adapter to start downloading
447 the personality code into adapter instruction RAM.
448 Once code is loaded, it will begin executing and, based on
449 information provided above, will start DMAing data from
450 shared memory to adapter DRAM.
451 */
452 /* the wait loop below verifies this write operation has been done
453 and processed
454 */
455 writeb(START_DOWNLOAD, &icom_port->dram->sync);
456
457 /* Wait max 1 Sec for data download and processor to start */
458 for (index = 0; index < 10; index++) {
459 msleep(100);
460 if (readb(&icom_port->dram->misc_flags) & ICOM_HDW_ACTIVE)
461 break;
462 }
463
464 if (index == 10)
465 status = -1;
466
467 /*
468 * check Cable ID
469 */
470 cable_id = readb(&icom_port->dram->cable_id);
471
472 if (cable_id & ICOM_CABLE_ID_VALID) {
473 /* Get cable ID into the lower 4 bits (standard form) */
474 cable_id = (cable_id & ICOM_CABLE_ID_MASK) >> 4;
475 icom_port->cable_id = cable_id;
476 } else {
477 dev_err(&dev->dev,"Invalid or no cable attached\n");
478 icom_port->cable_id = NO_CABLE;
479 }
480
481 load_code_exit:
482
483 if (status != 0) {
484 /* Clear out any pending interrupts */
485 writew(0x3FFF, icom_port->int_reg);
486
487 /* Turn off port */
488 writeb(ICOM_DISABLE, &(icom_port->dram->disable));
489
490 /* Stop processor */
491 stop_processor(icom_port);
492
493 dev_err(&icom_port->adapter->pci_dev->dev,"Port not operational\n");
494 }
495
496 if (new_page != NULL)
497 pci_free_consistent(dev, 4096, new_page, temp_pci);
498}
499
500static int startup(struct icom_port *icom_port)
501{
502 unsigned long temp;
503 unsigned char cable_id, raw_cable_id;
504 unsigned long flags;
505 int port;
506
507 trace(icom_port, "STARTUP", 0);
508
509 if (!icom_port->dram) {
510 /* should NEVER be NULL */
511 dev_err(&icom_port->adapter->pci_dev->dev,
512 "Unusable Port, port configuration missing\n");
513 return -ENODEV;
514 }
515
516 /*
517 * check Cable ID
518 */
519 raw_cable_id = readb(&icom_port->dram->cable_id);
520 trace(icom_port, "CABLE_ID", raw_cable_id);
521
522 /* Get cable ID into the lower 4 bits (standard form) */
523 cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
524
525 /* Check for valid Cable ID */
526 if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
527 (cable_id != icom_port->cable_id)) {
528
529 /* reload adapter code, pick up any potential changes in cable id */
530 load_code(icom_port);
531
532 /* still no sign of cable, error out */
533 raw_cable_id = readb(&icom_port->dram->cable_id);
534 cable_id = (raw_cable_id & ICOM_CABLE_ID_MASK) >> 4;
535 if (!(raw_cable_id & ICOM_CABLE_ID_VALID) ||
536 (icom_port->cable_id == NO_CABLE))
537 return -EIO;
538 }
539
540 /*
541 * Finally, clear and enable interrupts
542 */
543 spin_lock_irqsave(&icom_lock, flags);
544 port = icom_port->port;
545 if (port >= ARRAY_SIZE(int_mask_tbl)) {
546 dev_err(&icom_port->adapter->pci_dev->dev,
547 "Invalid port assignment\n");
548 goto unlock;
549 }
550
551 if (port == 0 || port == 1)
552 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
553 else
554 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
555
556 if (port == 0 || port == 2)
557 writew(0x00FF, icom_port->int_reg);
558 else
559 writew(0x3F00, icom_port->int_reg);
560
561 temp = readl(int_mask_tbl[port].global_int_mask);
562 writel(temp & ~int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
563
564 /* write flush */
565 readl(int_mask_tbl[port].global_int_mask);
566
567unlock:
568 spin_unlock_irqrestore(&icom_lock, flags);
569 return 0;
570}
571
572static void shutdown(struct icom_port *icom_port)
573{
574 unsigned long temp;
575 unsigned char cmdReg;
576 unsigned long flags;
577 int port;
578
579 spin_lock_irqsave(&icom_lock, flags);
580 trace(icom_port, "SHUTDOWN", 0);
581
582 /*
583 * disable all interrupts
584 */
585 port = icom_port->port;
586 if (port >= ARRAY_SIZE(int_mask_tbl)) {
587 dev_err(&icom_port->adapter->pci_dev->dev,
588 "Invalid port assignment\n");
589 goto unlock;
590 }
591 if (port == 0 || port == 1)
592 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask;
593 else
594 int_mask_tbl[port].global_int_mask = &icom_port->global_reg->int_mask_2;
595
596 temp = readl(int_mask_tbl[port].global_int_mask);
597 writel(temp | int_mask_tbl[port].processor_id, int_mask_tbl[port].global_int_mask);
598
599 /* write flush */
600 readl(int_mask_tbl[port].global_int_mask);
601
602unlock:
603 spin_unlock_irqrestore(&icom_lock, flags);
604
605 /*
606 * disable break condition
607 */
608 cmdReg = readb(&icom_port->dram->CmdReg);
609 if (cmdReg & CMD_SND_BREAK) {
610 writeb(cmdReg & ~CMD_SND_BREAK, &icom_port->dram->CmdReg);
611 }
612}
613
614static int icom_write(struct uart_port *port)
615{
616 unsigned long data_count;
617 unsigned char cmdReg;
618 unsigned long offset;
619 int temp_tail = port->state->xmit.tail;
620
621 trace(ICOM_PORT, "WRITE", 0);
622
623 if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
624 SA_FLAGS_READY_TO_XMIT) {
625 trace(ICOM_PORT, "WRITE_FULL", 0);
626 return 0;
627 }
628
629 data_count = 0;
630 while ((port->state->xmit.head != temp_tail) &&
631 (data_count <= XMIT_BUFF_SZ)) {
632
633 ICOM_PORT->xmit_buf[data_count++] =
634 port->state->xmit.buf[temp_tail];
635
636 temp_tail++;
637 temp_tail &= (UART_XMIT_SIZE - 1);
638 }
639
640 if (data_count) {
641 ICOM_PORT->statStg->xmit[0].flags =
642 cpu_to_le16(SA_FLAGS_READY_TO_XMIT);
643 ICOM_PORT->statStg->xmit[0].leLength =
644 cpu_to_le16(data_count);
645 offset =
646 (unsigned long) &ICOM_PORT->statStg->xmit[0] -
647 (unsigned long) ICOM_PORT->statStg;
648 *ICOM_PORT->xmitRestart =
649 cpu_to_le32(ICOM_PORT->statStg_pci + offset);
650 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
651 writeb(cmdReg | CMD_XMIT_RCV_ENABLE,
652 &ICOM_PORT->dram->CmdReg);
653 writeb(START_XMIT, &ICOM_PORT->dram->StartXmitCmd);
654 trace(ICOM_PORT, "WRITE_START", data_count);
655 /* write flush */
656 readb(&ICOM_PORT->dram->StartXmitCmd);
657 }
658
659 return data_count;
660}
661
662static inline void check_modem_status(struct icom_port *icom_port)
663{
664 static char old_status = 0;
665 char delta_status;
666 unsigned char status;
667
668 spin_lock(&icom_port->uart_port.lock);
669
670 /*modem input register */
671 status = readb(&icom_port->dram->isr);
672 trace(icom_port, "CHECK_MODEM", status);
673 delta_status = status ^ old_status;
674 if (delta_status) {
675 if (delta_status & ICOM_RI)
676 icom_port->uart_port.icount.rng++;
677 if (delta_status & ICOM_DSR)
678 icom_port->uart_port.icount.dsr++;
679 if (delta_status & ICOM_DCD)
680 uart_handle_dcd_change(&icom_port->uart_port,
681 delta_status & ICOM_DCD);
682 if (delta_status & ICOM_CTS)
683 uart_handle_cts_change(&icom_port->uart_port,
684 delta_status & ICOM_CTS);
685
686 wake_up_interruptible(&icom_port->uart_port.state->
687 port.delta_msr_wait);
688 old_status = status;
689 }
690 spin_unlock(&icom_port->uart_port.lock);
691}
692
693static void xmit_interrupt(u16 port_int_reg, struct icom_port *icom_port)
694{
695 unsigned short int count;
696 int i;
697
698 if (port_int_reg & (INT_XMIT_COMPLETED)) {
699 trace(icom_port, "XMIT_COMPLETE", 0);
700
701 /* clear buffer in use bit */
702 icom_port->statStg->xmit[0].flags &=
703 cpu_to_le16(~SA_FLAGS_READY_TO_XMIT);
704
705 count = (unsigned short int)
706 cpu_to_le16(icom_port->statStg->xmit[0].leLength);
707 icom_port->uart_port.icount.tx += count;
708
709 for (i=0; i<count &&
710 !uart_circ_empty(&icom_port->uart_port.state->xmit); i++) {
711
712 icom_port->uart_port.state->xmit.tail++;
713 icom_port->uart_port.state->xmit.tail &=
714 (UART_XMIT_SIZE - 1);
715 }
716
717 if (!icom_write(&icom_port->uart_port))
718 /* activate write queue */
719 uart_write_wakeup(&icom_port->uart_port);
720 } else
721 trace(icom_port, "XMIT_DISABLED", 0);
722}
723
724static void recv_interrupt(u16 port_int_reg, struct icom_port *icom_port)
725{
726 short int count, rcv_buff;
727 struct tty_port *port = &icom_port->uart_port.state->port;
728 unsigned short int status;
729 struct uart_icount *icount;
730 unsigned long offset;
731 unsigned char flag;
732
733 trace(icom_port, "RCV_COMPLETE", 0);
734 rcv_buff = icom_port->next_rcv;
735
736 status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
737 while (status & SA_FL_RCV_DONE) {
738 int first = -1;
739
740 trace(icom_port, "FID_STATUS", status);
741 count = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].leLength);
742
743 trace(icom_port, "RCV_COUNT", count);
744
745 trace(icom_port, "REAL_COUNT", count);
746
747 offset =
748 cpu_to_le32(icom_port->statStg->rcv[rcv_buff].leBuffer) -
749 icom_port->recv_buf_pci;
750
751 /* Block copy all but the last byte as this may have status */
752 if (count > 0) {
753 first = icom_port->recv_buf[offset];
754 tty_insert_flip_string(port, icom_port->recv_buf + offset, count - 1);
755 }
756
757 icount = &icom_port->uart_port.icount;
758 icount->rx += count;
759
760 /* Break detect logic */
761 if ((status & SA_FLAGS_FRAME_ERROR)
762 && first == 0) {
763 status &= ~SA_FLAGS_FRAME_ERROR;
764 status |= SA_FLAGS_BREAK_DET;
765 trace(icom_port, "BREAK_DET", 0);
766 }
767
768 flag = TTY_NORMAL;
769
770 if (status &
771 (SA_FLAGS_BREAK_DET | SA_FLAGS_PARITY_ERROR |
772 SA_FLAGS_FRAME_ERROR | SA_FLAGS_OVERRUN)) {
773
774 if (status & SA_FLAGS_BREAK_DET)
775 icount->brk++;
776 if (status & SA_FLAGS_PARITY_ERROR)
777 icount->parity++;
778 if (status & SA_FLAGS_FRAME_ERROR)
779 icount->frame++;
780 if (status & SA_FLAGS_OVERRUN)
781 icount->overrun++;
782
783 /*
784 * Now check to see if character should be
785 * ignored, and mask off conditions which
786 * should be ignored.
787 */
788 if (status & icom_port->ignore_status_mask) {
789 trace(icom_port, "IGNORE_CHAR", 0);
790 goto ignore_char;
791 }
792
793 status &= icom_port->read_status_mask;
794
795 if (status & SA_FLAGS_BREAK_DET) {
796 flag = TTY_BREAK;
797 } else if (status & SA_FLAGS_PARITY_ERROR) {
798 trace(icom_port, "PARITY_ERROR", 0);
799 flag = TTY_PARITY;
800 } else if (status & SA_FLAGS_FRAME_ERROR)
801 flag = TTY_FRAME;
802
803 }
804
805 tty_insert_flip_char(port, *(icom_port->recv_buf + offset + count - 1), flag);
806
807 if (status & SA_FLAGS_OVERRUN)
808 /*
809 * Overrun is special, since it's
810 * reported immediately, and doesn't
811 * affect the current character
812 */
813 tty_insert_flip_char(port, 0, TTY_OVERRUN);
814ignore_char:
815 icom_port->statStg->rcv[rcv_buff].flags = 0;
816 icom_port->statStg->rcv[rcv_buff].leLength = 0;
817 icom_port->statStg->rcv[rcv_buff].WorkingLength =
818 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
819
820 rcv_buff++;
821 if (rcv_buff == NUM_RBUFFS)
822 rcv_buff = 0;
823
824 status = cpu_to_le16(icom_port->statStg->rcv[rcv_buff].flags);
825 }
826 icom_port->next_rcv = rcv_buff;
827
828 spin_unlock(&icom_port->uart_port.lock);
829 tty_flip_buffer_push(port);
830 spin_lock(&icom_port->uart_port.lock);
831}
832
833static void process_interrupt(u16 port_int_reg,
834 struct icom_port *icom_port)
835{
836
837 spin_lock(&icom_port->uart_port.lock);
838 trace(icom_port, "INTERRUPT", port_int_reg);
839
840 if (port_int_reg & (INT_XMIT_COMPLETED | INT_XMIT_DISABLED))
841 xmit_interrupt(port_int_reg, icom_port);
842
843 if (port_int_reg & INT_RCV_COMPLETED)
844 recv_interrupt(port_int_reg, icom_port);
845
846 spin_unlock(&icom_port->uart_port.lock);
847}
848
849static irqreturn_t icom_interrupt(int irq, void *dev_id)
850{
851 void __iomem * int_reg;
852 u32 adapter_interrupts;
853 u16 port_int_reg;
854 struct icom_adapter *icom_adapter;
855 struct icom_port *icom_port;
856
857 /* find icom_port for this interrupt */
858 icom_adapter = (struct icom_adapter *) dev_id;
859
860 if (icom_adapter->version == ADAPTER_V2) {
861 int_reg = icom_adapter->base_addr + 0x8024;
862
863 adapter_interrupts = readl(int_reg);
864
865 if (adapter_interrupts & 0x00003FFF) {
866 /* port 2 interrupt, NOTE: for all ADAPTER_V2, port 2 will be active */
867 icom_port = &icom_adapter->port_info[2];
868 port_int_reg = (u16) adapter_interrupts;
869 process_interrupt(port_int_reg, icom_port);
870 check_modem_status(icom_port);
871 }
872 if (adapter_interrupts & 0x3FFF0000) {
873 /* port 3 interrupt */
874 icom_port = &icom_adapter->port_info[3];
875 if (icom_port->status == ICOM_PORT_ACTIVE) {
876 port_int_reg =
877 (u16) (adapter_interrupts >> 16);
878 process_interrupt(port_int_reg, icom_port);
879 check_modem_status(icom_port);
880 }
881 }
882
883 /* Clear out any pending interrupts */
884 writel(adapter_interrupts, int_reg);
885
886 int_reg = icom_adapter->base_addr + 0x8004;
887 } else {
888 int_reg = icom_adapter->base_addr + 0x4004;
889 }
890
891 adapter_interrupts = readl(int_reg);
892
893 if (adapter_interrupts & 0x00003FFF) {
894 /* port 0 interrupt, NOTE: for all adapters, port 0 will be active */
895 icom_port = &icom_adapter->port_info[0];
896 port_int_reg = (u16) adapter_interrupts;
897 process_interrupt(port_int_reg, icom_port);
898 check_modem_status(icom_port);
899 }
900 if (adapter_interrupts & 0x3FFF0000) {
901 /* port 1 interrupt */
902 icom_port = &icom_adapter->port_info[1];
903 if (icom_port->status == ICOM_PORT_ACTIVE) {
904 port_int_reg = (u16) (adapter_interrupts >> 16);
905 process_interrupt(port_int_reg, icom_port);
906 check_modem_status(icom_port);
907 }
908 }
909
910 /* Clear out any pending interrupts */
911 writel(adapter_interrupts, int_reg);
912
913 /* flush the write */
914 adapter_interrupts = readl(int_reg);
915
916 return IRQ_HANDLED;
917}
918
919/*
920 * ------------------------------------------------------------------
921 * Begin serial-core API
922 * ------------------------------------------------------------------
923 */
924static unsigned int icom_tx_empty(struct uart_port *port)
925{
926 int ret;
927 unsigned long flags;
928
929 spin_lock_irqsave(&port->lock, flags);
930 if (cpu_to_le16(ICOM_PORT->statStg->xmit[0].flags) &
931 SA_FLAGS_READY_TO_XMIT)
932 ret = TIOCSER_TEMT;
933 else
934 ret = 0;
935
936 spin_unlock_irqrestore(&port->lock, flags);
937 return ret;
938}
939
940static void icom_set_mctrl(struct uart_port *port, unsigned int mctrl)
941{
942 unsigned char local_osr;
943
944 trace(ICOM_PORT, "SET_MODEM", 0);
945 local_osr = readb(&ICOM_PORT->dram->osr);
946
947 if (mctrl & TIOCM_RTS) {
948 trace(ICOM_PORT, "RAISE_RTS", 0);
949 local_osr |= ICOM_RTS;
950 } else {
951 trace(ICOM_PORT, "LOWER_RTS", 0);
952 local_osr &= ~ICOM_RTS;
953 }
954
955 if (mctrl & TIOCM_DTR) {
956 trace(ICOM_PORT, "RAISE_DTR", 0);
957 local_osr |= ICOM_DTR;
958 } else {
959 trace(ICOM_PORT, "LOWER_DTR", 0);
960 local_osr &= ~ICOM_DTR;
961 }
962
963 writeb(local_osr, &ICOM_PORT->dram->osr);
964}
965
966static unsigned int icom_get_mctrl(struct uart_port *port)
967{
968 unsigned char status;
969 unsigned int result;
970
971 trace(ICOM_PORT, "GET_MODEM", 0);
972
973 status = readb(&ICOM_PORT->dram->isr);
974
975 result = ((status & ICOM_DCD) ? TIOCM_CAR : 0)
976 | ((status & ICOM_RI) ? TIOCM_RNG : 0)
977 | ((status & ICOM_DSR) ? TIOCM_DSR : 0)
978 | ((status & ICOM_CTS) ? TIOCM_CTS : 0);
979 return result;
980}
981
982static void icom_stop_tx(struct uart_port *port)
983{
984 unsigned char cmdReg;
985
986 trace(ICOM_PORT, "STOP", 0);
987 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
988 writeb(cmdReg | CMD_HOLD_XMIT, &ICOM_PORT->dram->CmdReg);
989}
990
991static void icom_start_tx(struct uart_port *port)
992{
993 unsigned char cmdReg;
994
995 trace(ICOM_PORT, "START", 0);
996 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
997 if ((cmdReg & CMD_HOLD_XMIT) == CMD_HOLD_XMIT)
998 writeb(cmdReg & ~CMD_HOLD_XMIT,
999 &ICOM_PORT->dram->CmdReg);
1000
1001 icom_write(port);
1002}
1003
1004static void icom_send_xchar(struct uart_port *port, char ch)
1005{
1006 unsigned char xdata;
1007 int index;
1008 unsigned long flags;
1009
1010 trace(ICOM_PORT, "SEND_XCHAR", ch);
1011
1012 /* wait .1 sec to send char */
1013 for (index = 0; index < 10; index++) {
1014 spin_lock_irqsave(&port->lock, flags);
1015 xdata = readb(&ICOM_PORT->dram->xchar);
1016 if (xdata == 0x00) {
1017 trace(ICOM_PORT, "QUICK_WRITE", 0);
1018 writeb(ch, &ICOM_PORT->dram->xchar);
1019
1020 /* flush write operation */
1021 xdata = readb(&ICOM_PORT->dram->xchar);
1022 spin_unlock_irqrestore(&port->lock, flags);
1023 break;
1024 }
1025 spin_unlock_irqrestore(&port->lock, flags);
1026 msleep(10);
1027 }
1028}
1029
1030static void icom_stop_rx(struct uart_port *port)
1031{
1032 unsigned char cmdReg;
1033
1034 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1035 writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1036}
1037
1038static void icom_break(struct uart_port *port, int break_state)
1039{
1040 unsigned char cmdReg;
1041 unsigned long flags;
1042
1043 spin_lock_irqsave(&port->lock, flags);
1044 trace(ICOM_PORT, "BREAK", 0);
1045 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1046 if (break_state == -1) {
1047 writeb(cmdReg | CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
1048 } else {
1049 writeb(cmdReg & ~CMD_SND_BREAK, &ICOM_PORT->dram->CmdReg);
1050 }
1051 spin_unlock_irqrestore(&port->lock, flags);
1052}
1053
1054static int icom_open(struct uart_port *port)
1055{
1056 int retval;
1057
1058 kref_get(&ICOM_PORT->adapter->kref);
1059 retval = startup(ICOM_PORT);
1060
1061 if (retval) {
1062 kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
1063 trace(ICOM_PORT, "STARTUP_ERROR", 0);
1064 return retval;
1065 }
1066
1067 return 0;
1068}
1069
1070static void icom_close(struct uart_port *port)
1071{
1072 unsigned char cmdReg;
1073
1074 trace(ICOM_PORT, "CLOSE", 0);
1075
1076 /* stop receiver */
1077 cmdReg = readb(&ICOM_PORT->dram->CmdReg);
1078 writeb(cmdReg & ~CMD_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1079
1080 shutdown(ICOM_PORT);
1081
1082 kref_put(&ICOM_PORT->adapter->kref, icom_kref_release);
1083}
1084
1085static void icom_set_termios(struct uart_port *port,
1086 struct ktermios *termios,
1087 struct ktermios *old_termios)
1088{
1089 int baud;
1090 unsigned cflag, iflag;
1091 char new_config2;
1092 char new_config3 = 0;
1093 char tmp_byte;
1094 int index;
1095 int rcv_buff, xmit_buff;
1096 unsigned long offset;
1097 unsigned long flags;
1098
1099 spin_lock_irqsave(&port->lock, flags);
1100 trace(ICOM_PORT, "CHANGE_SPEED", 0);
1101
1102 cflag = termios->c_cflag;
1103 iflag = termios->c_iflag;
1104
1105 new_config2 = ICOM_ACFG_DRIVE1;
1106
1107 /* byte size and parity */
1108 switch (cflag & CSIZE) {
1109 case CS5: /* 5 bits/char */
1110 new_config2 |= ICOM_ACFG_5BPC;
1111 break;
1112 case CS6: /* 6 bits/char */
1113 new_config2 |= ICOM_ACFG_6BPC;
1114 break;
1115 case CS7: /* 7 bits/char */
1116 new_config2 |= ICOM_ACFG_7BPC;
1117 break;
1118 case CS8: /* 8 bits/char */
1119 new_config2 |= ICOM_ACFG_8BPC;
1120 break;
1121 default:
1122 break;
1123 }
1124 if (cflag & CSTOPB) {
1125 /* 2 stop bits */
1126 new_config2 |= ICOM_ACFG_2STOP_BIT;
1127 }
1128 if (cflag & PARENB) {
1129 /* parity bit enabled */
1130 new_config2 |= ICOM_ACFG_PARITY_ENAB;
1131 trace(ICOM_PORT, "PARENB", 0);
1132 }
1133 if (cflag & PARODD) {
1134 /* odd parity */
1135 new_config2 |= ICOM_ACFG_PARITY_ODD;
1136 trace(ICOM_PORT, "PARODD", 0);
1137 }
1138
1139 /* Determine divisor based on baud rate */
1140 baud = uart_get_baud_rate(port, termios, old_termios,
1141 icom_acfg_baud[0],
1142 icom_acfg_baud[BAUD_TABLE_LIMIT]);
1143 if (!baud)
1144 baud = 9600; /* B0 transition handled in rs_set_termios */
1145
1146 for (index = 0; index < BAUD_TABLE_LIMIT; index++) {
1147 if (icom_acfg_baud[index] == baud) {
1148 new_config3 = index;
1149 break;
1150 }
1151 }
1152
1153 uart_update_timeout(port, cflag, baud);
1154
1155 /* CTS flow control flag and modem status interrupts */
1156 tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
1157 if (cflag & CRTSCTS)
1158 tmp_byte |= HDLC_HDW_FLOW;
1159 else
1160 tmp_byte &= ~HDLC_HDW_FLOW;
1161 writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
1162
1163 /*
1164 * Set up parity check flag
1165 */
1166 ICOM_PORT->read_status_mask = SA_FLAGS_OVERRUN | SA_FL_RCV_DONE;
1167 if (iflag & INPCK)
1168 ICOM_PORT->read_status_mask |=
1169 SA_FLAGS_FRAME_ERROR | SA_FLAGS_PARITY_ERROR;
1170
1171 if ((iflag & BRKINT) || (iflag & PARMRK))
1172 ICOM_PORT->read_status_mask |= SA_FLAGS_BREAK_DET;
1173
1174 /*
1175 * Characters to ignore
1176 */
1177 ICOM_PORT->ignore_status_mask = 0;
1178 if (iflag & IGNPAR)
1179 ICOM_PORT->ignore_status_mask |=
1180 SA_FLAGS_PARITY_ERROR | SA_FLAGS_FRAME_ERROR;
1181 if (iflag & IGNBRK) {
1182 ICOM_PORT->ignore_status_mask |= SA_FLAGS_BREAK_DET;
1183 /*
1184 * If we're ignore parity and break indicators, ignore
1185 * overruns too. (For real raw support).
1186 */
1187 if (iflag & IGNPAR)
1188 ICOM_PORT->ignore_status_mask |= SA_FLAGS_OVERRUN;
1189 }
1190
1191 /*
1192 * !!! ignore all characters if CREAD is not set
1193 */
1194 if ((cflag & CREAD) == 0)
1195 ICOM_PORT->ignore_status_mask |= SA_FL_RCV_DONE;
1196
1197 /* Turn off Receiver to prepare for reset */
1198 writeb(CMD_RCV_DISABLE, &ICOM_PORT->dram->CmdReg);
1199
1200 for (index = 0; index < 10; index++) {
1201 if (readb(&ICOM_PORT->dram->PrevCmdReg) == 0x00) {
1202 break;
1203 }
1204 }
1205
1206 /* clear all current buffers of data */
1207 for (rcv_buff = 0; rcv_buff < NUM_RBUFFS; rcv_buff++) {
1208 ICOM_PORT->statStg->rcv[rcv_buff].flags = 0;
1209 ICOM_PORT->statStg->rcv[rcv_buff].leLength = 0;
1210 ICOM_PORT->statStg->rcv[rcv_buff].WorkingLength =
1211 (unsigned short int) cpu_to_le16(RCV_BUFF_SZ);
1212 }
1213
1214 for (xmit_buff = 0; xmit_buff < NUM_XBUFFS; xmit_buff++) {
1215 ICOM_PORT->statStg->xmit[xmit_buff].flags = 0;
1216 }
1217
1218 /* activate changes and start xmit and receiver here */
1219 /* Enable the receiver */
1220 writeb(new_config3, &(ICOM_PORT->dram->async_config3));
1221 writeb(new_config2, &(ICOM_PORT->dram->async_config2));
1222 tmp_byte = readb(&(ICOM_PORT->dram->HDLCConfigReg));
1223 tmp_byte |= HDLC_PPP_PURE_ASYNC | HDLC_FF_FILL;
1224 writeb(tmp_byte, &(ICOM_PORT->dram->HDLCConfigReg));
1225 writeb(0x04, &(ICOM_PORT->dram->FlagFillIdleTimer)); /* 0.5 seconds */
1226 writeb(0xFF, &(ICOM_PORT->dram->ier)); /* enable modem signal interrupts */
1227
1228 /* reset processor */
1229 writeb(CMD_RESTART, &ICOM_PORT->dram->CmdReg);
1230
1231 for (index = 0; index < 10; index++) {
1232 if (readb(&ICOM_PORT->dram->CmdReg) == 0x00) {
1233 break;
1234 }
1235 }
1236
1237 /* Enable Transmitter and Receiver */
1238 offset =
1239 (unsigned long) &ICOM_PORT->statStg->rcv[0] -
1240 (unsigned long) ICOM_PORT->statStg;
1241 writel(ICOM_PORT->statStg_pci + offset,
1242 &ICOM_PORT->dram->RcvStatusAddr);
1243 ICOM_PORT->next_rcv = 0;
1244 ICOM_PORT->put_length = 0;
1245 *ICOM_PORT->xmitRestart = 0;
1246 writel(ICOM_PORT->xmitRestart_pci,
1247 &ICOM_PORT->dram->XmitStatusAddr);
1248 trace(ICOM_PORT, "XR_ENAB", 0);
1249 writeb(CMD_XMIT_RCV_ENABLE, &ICOM_PORT->dram->CmdReg);
1250
1251 spin_unlock_irqrestore(&port->lock, flags);
1252}
1253
1254static const char *icom_type(struct uart_port *port)
1255{
1256 return "icom";
1257}
1258
1259static void icom_release_port(struct uart_port *port)
1260{
1261}
1262
1263static int icom_request_port(struct uart_port *port)
1264{
1265 return 0;
1266}
1267
1268static void icom_config_port(struct uart_port *port, int flags)
1269{
1270 port->type = PORT_ICOM;
1271}
1272
1273static const struct uart_ops icom_ops = {
1274 .tx_empty = icom_tx_empty,
1275 .set_mctrl = icom_set_mctrl,
1276 .get_mctrl = icom_get_mctrl,
1277 .stop_tx = icom_stop_tx,
1278 .start_tx = icom_start_tx,
1279 .send_xchar = icom_send_xchar,
1280 .stop_rx = icom_stop_rx,
1281 .break_ctl = icom_break,
1282 .startup = icom_open,
1283 .shutdown = icom_close,
1284 .set_termios = icom_set_termios,
1285 .type = icom_type,
1286 .release_port = icom_release_port,
1287 .request_port = icom_request_port,
1288 .config_port = icom_config_port,
1289};
1290
1291#define ICOM_CONSOLE NULL
1292
1293static struct uart_driver icom_uart_driver = {
1294 .owner = THIS_MODULE,
1295 .driver_name = ICOM_DRIVER_NAME,
1296 .dev_name = "ttyA",
1297 .major = ICOM_MAJOR,
1298 .minor = ICOM_MINOR_START,
1299 .nr = NR_PORTS,
1300 .cons = ICOM_CONSOLE,
1301};
1302
1303static int icom_init_ports(struct icom_adapter *icom_adapter)
1304{
1305 u32 subsystem_id = icom_adapter->subsystem_id;
1306 int i;
1307 struct icom_port *icom_port;
1308
1309 if (icom_adapter->version == ADAPTER_V1) {
1310 icom_adapter->numb_ports = 2;
1311
1312 for (i = 0; i < 2; i++) {
1313 icom_port = &icom_adapter->port_info[i];
1314 icom_port->port = i;
1315 icom_port->status = ICOM_PORT_ACTIVE;
1316 icom_port->imbed_modem = ICOM_UNKNOWN;
1317 }
1318 } else {
1319 if (subsystem_id == PCI_DEVICE_ID_IBM_ICOM_FOUR_PORT_MODEL) {
1320 icom_adapter->numb_ports = 4;
1321
1322 for (i = 0; i < 4; i++) {
1323 icom_port = &icom_adapter->port_info[i];
1324
1325 icom_port->port = i;
1326 icom_port->status = ICOM_PORT_ACTIVE;
1327 icom_port->imbed_modem = ICOM_IMBED_MODEM;
1328 }
1329 } else {
1330 icom_adapter->numb_ports = 4;
1331
1332 icom_adapter->port_info[0].port = 0;
1333 icom_adapter->port_info[0].status = ICOM_PORT_ACTIVE;
1334
1335 if (subsystem_id ==
1336 PCI_DEVICE_ID_IBM_ICOM_V2_ONE_PORT_RVX_ONE_PORT_MDM) {
1337 icom_adapter->port_info[0].imbed_modem = ICOM_IMBED_MODEM;
1338 } else {
1339 icom_adapter->port_info[0].imbed_modem = ICOM_RVX;
1340 }
1341
1342 icom_adapter->port_info[1].status = ICOM_PORT_OFF;
1343
1344 icom_adapter->port_info[2].port = 2;
1345 icom_adapter->port_info[2].status = ICOM_PORT_ACTIVE;
1346 icom_adapter->port_info[2].imbed_modem = ICOM_RVX;
1347 icom_adapter->port_info[3].status = ICOM_PORT_OFF;
1348 }
1349 }
1350
1351 return 0;
1352}
1353
1354static void icom_port_active(struct icom_port *icom_port, struct icom_adapter *icom_adapter, int port_num)
1355{
1356 if (icom_adapter->version == ADAPTER_V1) {
1357 icom_port->global_reg = icom_adapter->base_addr + 0x4000;
1358 icom_port->int_reg = icom_adapter->base_addr +
1359 0x4004 + 2 - 2 * port_num;
1360 } else {
1361 icom_port->global_reg = icom_adapter->base_addr + 0x8000;
1362 if (icom_port->port < 2)
1363 icom_port->int_reg = icom_adapter->base_addr +
1364 0x8004 + 2 - 2 * icom_port->port;
1365 else
1366 icom_port->int_reg = icom_adapter->base_addr +
1367 0x8024 + 2 - 2 * (icom_port->port - 2);
1368 }
1369}
1370static int icom_load_ports(struct icom_adapter *icom_adapter)
1371{
1372 struct icom_port *icom_port;
1373 int port_num;
1374
1375 for (port_num = 0; port_num < icom_adapter->numb_ports; port_num++) {
1376
1377 icom_port = &icom_adapter->port_info[port_num];
1378
1379 if (icom_port->status == ICOM_PORT_ACTIVE) {
1380 icom_port_active(icom_port, icom_adapter, port_num);
1381 icom_port->dram = icom_adapter->base_addr +
1382 0x2000 * icom_port->port;
1383
1384 icom_port->adapter = icom_adapter;
1385
1386 /* get port memory */
1387 if (get_port_memory(icom_port) != 0) {
1388 dev_err(&icom_port->adapter->pci_dev->dev,
1389 "Memory allocation for port FAILED\n");
1390 }
1391 }
1392 }
1393 return 0;
1394}
1395
1396static int icom_alloc_adapter(struct icom_adapter
1397 **icom_adapter_ref)
1398{
1399 int adapter_count = 0;
1400 struct icom_adapter *icom_adapter;
1401 struct icom_adapter *cur_adapter_entry;
1402 struct list_head *tmp;
1403
1404 icom_adapter = kzalloc(sizeof(struct icom_adapter), GFP_KERNEL);
1405
1406 if (!icom_adapter) {
1407 return -ENOMEM;
1408 }
1409
1410 list_for_each(tmp, &icom_adapter_head) {
1411 cur_adapter_entry =
1412 list_entry(tmp, struct icom_adapter,
1413 icom_adapter_entry);
1414 if (cur_adapter_entry->index != adapter_count) {
1415 break;
1416 }
1417 adapter_count++;
1418 }
1419
1420 icom_adapter->index = adapter_count;
1421 list_add_tail(&icom_adapter->icom_adapter_entry, tmp);
1422
1423 *icom_adapter_ref = icom_adapter;
1424 return 0;
1425}
1426
1427static void icom_free_adapter(struct icom_adapter *icom_adapter)
1428{
1429 list_del(&icom_adapter->icom_adapter_entry);
1430 kfree(icom_adapter);
1431}
1432
1433static void icom_remove_adapter(struct icom_adapter *icom_adapter)
1434{
1435 struct icom_port *icom_port;
1436 int index;
1437
1438 for (index = 0; index < icom_adapter->numb_ports; index++) {
1439 icom_port = &icom_adapter->port_info[index];
1440
1441 if (icom_port->status == ICOM_PORT_ACTIVE) {
1442 dev_info(&icom_adapter->pci_dev->dev,
1443 "Device removed\n");
1444
1445 uart_remove_one_port(&icom_uart_driver,
1446 &icom_port->uart_port);
1447
1448 /* be sure that DTR and RTS are dropped */
1449 writeb(0x00, &icom_port->dram->osr);
1450
1451 /* Wait 0.1 Sec for simple Init to complete */
1452 msleep(100);
1453
1454 /* Stop proccessor */
1455 stop_processor(icom_port);
1456
1457 free_port_memory(icom_port);
1458 }
1459 }
1460
1461 free_irq(icom_adapter->pci_dev->irq, (void *) icom_adapter);
1462 iounmap(icom_adapter->base_addr);
1463 pci_release_regions(icom_adapter->pci_dev);
1464 icom_free_adapter(icom_adapter);
1465}
1466
1467static void icom_kref_release(struct kref *kref)
1468{
1469 struct icom_adapter *icom_adapter;
1470
1471 icom_adapter = to_icom_adapter(kref);
1472 icom_remove_adapter(icom_adapter);
1473}
1474
1475static int icom_probe(struct pci_dev *dev,
1476 const struct pci_device_id *ent)
1477{
1478 int index;
1479 unsigned int command_reg;
1480 int retval;
1481 struct icom_adapter *icom_adapter;
1482 struct icom_port *icom_port;
1483
1484 retval = pci_enable_device(dev);
1485 if (retval) {
1486 dev_err(&dev->dev, "Device enable FAILED\n");
1487 return retval;
1488 }
1489
1490 retval = pci_request_regions(dev, "icom");
1491 if (retval) {
1492 dev_err(&dev->dev, "pci_request_regions FAILED\n");
1493 pci_disable_device(dev);
1494 return retval;
1495 }
1496
1497 pci_set_master(dev);
1498
1499 retval = pci_read_config_dword(dev, PCI_COMMAND, &command_reg);
1500 if (retval) {
1501 dev_err(&dev->dev, "PCI Config read FAILED\n");
1502 return retval;
1503 }
1504
1505 pci_write_config_dword(dev, PCI_COMMAND,
1506 command_reg | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER
1507 | PCI_COMMAND_PARITY | PCI_COMMAND_SERR);
1508
1509 if (ent->driver_data == ADAPTER_V1) {
1510 pci_write_config_dword(dev, 0x44, 0x8300830A);
1511 } else {
1512 pci_write_config_dword(dev, 0x44, 0x42004200);
1513 pci_write_config_dword(dev, 0x48, 0x42004200);
1514 }
1515
1516
1517 retval = icom_alloc_adapter(&icom_adapter);
1518 if (retval) {
1519 dev_err(&dev->dev, "icom_alloc_adapter FAILED\n");
1520 retval = -EIO;
1521 goto probe_exit0;
1522 }
1523
1524 icom_adapter->base_addr_pci = pci_resource_start(dev, 0);
1525 icom_adapter->pci_dev = dev;
1526 icom_adapter->version = ent->driver_data;
1527 icom_adapter->subsystem_id = ent->subdevice;
1528
1529
1530 retval = icom_init_ports(icom_adapter);
1531 if (retval) {
1532 dev_err(&dev->dev, "Port configuration failed\n");
1533 goto probe_exit1;
1534 }
1535
1536 icom_adapter->base_addr = pci_ioremap_bar(dev, 0);
1537
1538 if (!icom_adapter->base_addr) {
1539 retval = -ENOMEM;
1540 goto probe_exit1;
1541 }
1542
1543 /* save off irq and request irq line */
1544 retval = request_irq(dev->irq, icom_interrupt, IRQF_SHARED, ICOM_DRIVER_NAME, (void *)icom_adapter);
1545 if (retval) {
1546 goto probe_exit2;
1547 }
1548
1549 retval = icom_load_ports(icom_adapter);
1550
1551 for (index = 0; index < icom_adapter->numb_ports; index++) {
1552 icom_port = &icom_adapter->port_info[index];
1553
1554 if (icom_port->status == ICOM_PORT_ACTIVE) {
1555 icom_port->uart_port.irq = icom_port->adapter->pci_dev->irq;
1556 icom_port->uart_port.type = PORT_ICOM;
1557 icom_port->uart_port.iotype = UPIO_MEM;
1558 icom_port->uart_port.membase =
1559 (unsigned char __iomem *)icom_adapter->base_addr_pci;
1560 icom_port->uart_port.fifosize = 16;
1561 icom_port->uart_port.ops = &icom_ops;
1562 icom_port->uart_port.line =
1563 icom_port->port + icom_adapter->index * 4;
1564 if (uart_add_one_port (&icom_uart_driver, &icom_port->uart_port)) {
1565 icom_port->status = ICOM_PORT_OFF;
1566 dev_err(&dev->dev, "Device add failed\n");
1567 } else
1568 dev_info(&dev->dev, "Device added\n");
1569 }
1570 }
1571
1572 kref_init(&icom_adapter->kref);
1573 return 0;
1574
1575probe_exit2:
1576 iounmap(icom_adapter->base_addr);
1577probe_exit1:
1578 icom_free_adapter(icom_adapter);
1579
1580probe_exit0:
1581 pci_release_regions(dev);
1582 pci_disable_device(dev);
1583
1584 return retval;
1585}
1586
1587static void icom_remove(struct pci_dev *dev)
1588{
1589 struct icom_adapter *icom_adapter;
1590 struct list_head *tmp;
1591
1592 list_for_each(tmp, &icom_adapter_head) {
1593 icom_adapter = list_entry(tmp, struct icom_adapter,
1594 icom_adapter_entry);
1595 if (icom_adapter->pci_dev == dev) {
1596 kref_put(&icom_adapter->kref, icom_kref_release);
1597 return;
1598 }
1599 }
1600
1601 dev_err(&dev->dev, "Unable to find device to remove\n");
1602}
1603
1604static struct pci_driver icom_pci_driver = {
1605 .name = ICOM_DRIVER_NAME,
1606 .id_table = icom_pci_table,
1607 .probe = icom_probe,
1608 .remove = icom_remove,
1609};
1610
1611static int __init icom_init(void)
1612{
1613 int ret;
1614
1615 spin_lock_init(&icom_lock);
1616
1617 ret = uart_register_driver(&icom_uart_driver);
1618 if (ret)
1619 return ret;
1620
1621 ret = pci_register_driver(&icom_pci_driver);
1622
1623 if (ret < 0)
1624 uart_unregister_driver(&icom_uart_driver);
1625
1626 return ret;
1627}
1628
1629static void __exit icom_exit(void)
1630{
1631 pci_unregister_driver(&icom_pci_driver);
1632 uart_unregister_driver(&icom_uart_driver);
1633}
1634
1635module_init(icom_init);
1636module_exit(icom_exit);
1637
1638MODULE_AUTHOR("Michael Anderson <mjanders@us.ibm.com>");
1639MODULE_DESCRIPTION("IBM iSeries Serial IOA driver");
1640MODULE_SUPPORTED_DEVICE
1641 ("IBM iSeries 2745, 2771, 2772, 2742, 2793 and 2805 Communications adapters");
1642MODULE_LICENSE("GPL");
1643MODULE_FIRMWARE("icom_call_setup.bin");
1644MODULE_FIRMWARE("icom_res_dce.bin");
1645MODULE_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");