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