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Linux-2.6.12-rc2
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / scsi / psi240i.c
blob0f576d4ad0dd95e5880b716c55850c4bae5ffdc1
1 /*+M*************************************************************************
2 * Perceptive Solutions, Inc. PSI-240I device driver proc support for Linux.
3 *
4 * Copyright (c) 1997 Perceptive Solutions, Inc.
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2, or (at your option)
9 * any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; see the file COPYING. If not, write to
18 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
19 *
20 *
21 * File Name: psi240i.c
22 *
23 * Description: SCSI driver for the PSI240I EIDE interface card.
24 *
25 *-M*************************************************************************/
26
27 #include <linux/module.h>
28
29 #include <linux/blkdev.h>
30 #include <linux/kernel.h>
31 #include <linux/types.h>
32 #include <linux/string.h>
33 #include <linux/ioport.h>
34 #include <linux/delay.h>
35 #include <linux/interrupt.h>
36 #include <linux/proc_fs.h>
37 #include <linux/spinlock.h>
38 #include <linux/stat.h>
39
40 #include <asm/dma.h>
41 #include <asm/system.h>
42 #include <asm/io.h>
43 #include "scsi.h"
44 #include <scsi/scsi_host.h>
45
46 #include "psi240i.h"
47 #include "psi_chip.h"
48
49 //#define DEBUG 1
50
51 #ifdef DEBUG
52 #define DEB(x) x
53 #else
54 #define DEB(x)
55 #endif
56
57 #define MAXBOARDS 6 /* Increase this and the sizes of the arrays below, if you need more. */
58
59 #define PORT_DATA 0
60 #define PORT_ERROR 1
61 #define PORT_SECTOR_COUNT 2
62 #define PORT_LBA_0 3
63 #define PORT_LBA_8 4
64 #define PORT_LBA_16 5
65 #define PORT_LBA_24 6
66 #define PORT_STAT_CMD 7
67 #define PORT_SEL_FAIL 8
68 #define PORT_IRQ_STATUS 9
69 #define PORT_ADDRESS 10
70 #define PORT_FAIL 11
71 #define PORT_ALT_STAT 12
72
73 typedef struct
74 {
75 UCHAR device; // device code
76 UCHAR byte6; // device select register image
77 UCHAR spigot; // spigot number
78 UCHAR expectingIRQ; // flag for expecting and interrupt
79 USHORT sectors; // number of sectors per track
80 USHORT heads; // number of heads
81 USHORT cylinders; // number of cylinders for this device
82 USHORT spareword; // placeholder
83 ULONG blocks; // number of blocks on device
84 } OUR_DEVICE, *POUR_DEVICE;
85
86 typedef struct
87 {
88 USHORT ports[13];
89 OUR_DEVICE device[8];
90 Scsi_Cmnd *pSCmnd;
91 IDE_STRUCT ide;
92 ULONG startSector;
93 USHORT sectorCount;
94 Scsi_Cmnd *SCpnt;
95 VOID *buffer;
96 USHORT expectingIRQ;
97 } ADAPTER240I, *PADAPTER240I;
98
99 #define HOSTDATA(host) ((PADAPTER240I)&host->hostdata)
100
101 static struct Scsi_Host *PsiHost[6] = {NULL,}; /* One for each IRQ level (10-15) */
102 static IDENTIFY_DATA identifyData;
103 static SETUP ChipSetup;
104
105 static USHORT portAddr[6] = {CHIP_ADRS_0, CHIP_ADRS_1, CHIP_ADRS_2, CHIP_ADRS_3, CHIP_ADRS_4, CHIP_ADRS_5};
106
107 /****************************************************************
108 * Name: WriteData :LOCAL
109 *
110 * Description: Write data to device.
111 *
112 * Parameters: padapter - Pointer adapter data structure.
113 *
114 * Returns: TRUE if drive does not assert DRQ in time.
115 *
116 ****************************************************************/
117 static int WriteData (PADAPTER240I padapter)
118 {
119 ULONG timer;
120 USHORT *pports = padapter->ports;
121
122 timer = jiffies + TIMEOUT_DRQ; // calculate the timeout value
123 do {
124 if ( inb_p (pports[PORT_STAT_CMD]) & IDE_STATUS_DRQ )
125 {
126 outsw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ide[2] * 256);
127 return 0;
128 }
129 } while ( time_after(timer, jiffies) ); // test for timeout
130
131 padapter->ide.ide.ides.cmd = 0; // null out the command byte
132 return 1;
133 }
134 /****************************************************************
135 * Name: IdeCmd :LOCAL
136 *
137 * Description: Process a queued command from the SCSI manager.
138 *
139 * Parameters: padapter - Pointer adapter data structure.
140 *
141 * Returns: Zero if no error or status register contents on error.
142 *
143 ****************************************************************/
144 static UCHAR IdeCmd (PADAPTER240I padapter)
145 {
146 ULONG timer;
147 USHORT *pports = padapter->ports;
148 UCHAR status;
149
150 outb_p (padapter->ide.ide.ides.spigot, pports[PORT_SEL_FAIL]); // select the spigot
151 outb_p (padapter->ide.ide.ide[6], pports[PORT_LBA_24]); // select the drive
152 timer = jiffies + TIMEOUT_READY; // calculate the timeout value
153 do {
154 status = inb_p (padapter->ports[PORT_STAT_CMD]);
155 if ( status & IDE_STATUS_DRDY )
156 {
157 outb_p (padapter->ide.ide.ide[2], pports[PORT_SECTOR_COUNT]);
158 outb_p (padapter->ide.ide.ide[3], pports[PORT_LBA_0]);
159 outb_p (padapter->ide.ide.ide[4], pports[PORT_LBA_8]);
160 outb_p (padapter->ide.ide.ide[5], pports[PORT_LBA_16]);
161 padapter->expectingIRQ = 1;
162 outb_p (padapter->ide.ide.ide[7], pports[PORT_STAT_CMD]);
163
164 if ( padapter->ide.ide.ides.cmd == IDE_CMD_WRITE_MULTIPLE )
165 return (WriteData (padapter));
166
167 return 0;
168 }
169 } while ( time_after(timer, jiffies) ); // test for timeout
170
171 padapter->ide.ide.ides.cmd = 0; // null out the command byte
172 return status;
173 }
174 /****************************************************************
175 * Name: SetupTransfer :LOCAL
176 *
177 * Description: Setup a data transfer command.
178 *
179 * Parameters: padapter - Pointer adapter data structure.
180 * drive - Drive/head register upper nibble only.
181 *
182 * Returns: TRUE if no data to transfer.
183 *
184 ****************************************************************/
185 static int SetupTransfer (PADAPTER240I padapter, UCHAR drive)
186 {
187 if ( padapter->sectorCount )
188 {
189 *(ULONG *)padapter->ide.ide.ides.lba = padapter->startSector;
190 padapter->ide.ide.ide[6] |= drive;
191 padapter->ide.ide.ides.sectors = ( padapter->sectorCount > SECTORSXFER ) ? SECTORSXFER : padapter->sectorCount;
192 padapter->sectorCount -= padapter->ide.ide.ides.sectors; // bump the start and count for next xfer
193 padapter->startSector += padapter->ide.ide.ides.sectors;
194 return 0;
195 }
196 else
197 {
198 padapter->ide.ide.ides.cmd = 0; // null out the command byte
199 padapter->SCpnt = NULL;
200 return 1;
201 }
202 }
203 /****************************************************************
204 * Name: DecodeError :LOCAL
205 *
206 * Description: Decode and process device errors.
207 *
208 * Parameters: pshost - Pointer to host data block.
209 * status - Status register code.
210 *
211 * Returns: The driver status code.
212 *
213 ****************************************************************/
214 static ULONG DecodeError (struct Scsi_Host *pshost, UCHAR status)
215 {
216 PADAPTER240I padapter = HOSTDATA(pshost);
217 UCHAR error;
218
219 padapter->expectingIRQ = 0;
220 padapter->SCpnt = NULL;
221 if ( status & IDE_STATUS_WRITE_FAULT )
222 {
223 return DID_PARITY << 16;
224 }
225 if ( status & IDE_STATUS_BUSY )
226 return DID_BUS_BUSY << 16;
227
228 error = inb_p (padapter->ports[PORT_ERROR]);
229 DEB(printk ("\npsi240i error register: %x", error));
230 switch ( error )
231 {
232 case IDE_ERROR_AMNF:
233 case IDE_ERROR_TKONF:
234 case IDE_ERROR_ABRT:
235 case IDE_ERROR_IDFN:
236 case IDE_ERROR_UNC:
237 case IDE_ERROR_BBK:
238 default:
239 return DID_ERROR << 16;
240 }
241 return DID_ERROR << 16;
242 }
243 /****************************************************************
244 * Name: Irq_Handler :LOCAL
245 *
246 * Description: Interrupt handler.
247 *
248 * Parameters: irq - Hardware IRQ number.
249 * dev_id -
250 * regs -
251 *
252 * Returns: TRUE if drive is not ready in time.
253 *
254 ****************************************************************/
255 static void Irq_Handler (int irq, void *dev_id, struct pt_regs *regs)
256 {
257 struct Scsi_Host *shost; // Pointer to host data block
258 PADAPTER240I padapter; // Pointer to adapter control structure
259 USHORT *pports; // I/O port array
260 Scsi_Cmnd *SCpnt;
261 UCHAR status;
262 int z;
263
264 DEB(printk ("\npsi240i received interrupt\n"));
265
266 shost = PsiHost[irq - 10];
267 if ( !shost )
268 panic ("Splunge!");
269
270 padapter = HOSTDATA(shost);
271 pports = padapter->ports;
272 SCpnt = padapter->SCpnt;
273
274 if ( !padapter->expectingIRQ )
275 {
276 DEB(printk ("\npsi240i Unsolicited interrupt\n"));
277 return;
278 }
279 padapter->expectingIRQ = 0;
280
281 status = inb_p (padapter->ports[PORT_STAT_CMD]); // read the device status
282 if ( status & (IDE_STATUS_ERROR | IDE_STATUS_WRITE_FAULT) )
283 goto irqerror;
284
285 DEB(printk ("\npsi240i processing interrupt"));
286 switch ( padapter->ide.ide.ides.cmd ) // decide how to handle the interrupt
287 {
288 case IDE_CMD_READ_MULTIPLE:
289 if ( status & IDE_STATUS_DRQ )
290 {
291 insw (pports[PORT_DATA], padapter->buffer, (USHORT)padapter->ide.ide.ides.sectors * 256);
292 padapter->buffer += padapter->ide.ide.ides.sectors * 512;
293 if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) )
294 {
295 SCpnt->result = DID_OK << 16;
296 padapter->SCpnt = NULL;
297 SCpnt->scsi_done (SCpnt);
298 return;
299 }
300 if ( !(status = IdeCmd (padapter)) )
301 return;
302 }
303 break;
304
305 case IDE_CMD_WRITE_MULTIPLE:
306 padapter->buffer += padapter->ide.ide.ides.sectors * 512;
307 if ( SetupTransfer (padapter, padapter->ide.ide.ide[6] & 0xF0) )
308 {
309 SCpnt->result = DID_OK << 16;
310 padapter->SCpnt = NULL;
311 SCpnt->scsi_done (SCpnt);
312 return;
313 }
314 if ( !(status = IdeCmd (padapter)) )
315 return;
316 break;
317
318 case IDE_COMMAND_IDENTIFY:
319 {
320 PINQUIRYDATA pinquiryData = SCpnt->request_buffer;
321
322 if ( status & IDE_STATUS_DRQ )
323 {
324 insw (pports[PORT_DATA], &identifyData, sizeof (identifyData) >> 1);
325
326 memset (pinquiryData, 0, SCpnt->request_bufflen); // Zero INQUIRY data structure.
327 pinquiryData->DeviceType = 0;
328 pinquiryData->Versions = 2;
329 pinquiryData->AdditionalLength = 35 - 4;
330
331 // Fill in vendor identification fields.
332 for ( z = 0; z < 20; z += 2 )
333 {
334 pinquiryData->VendorId[z] = ((UCHAR *)identifyData.ModelNumber)[z + 1];
335 pinquiryData->VendorId[z + 1] = ((UCHAR *)identifyData.ModelNumber)[z];
336 }
337
338 // Initialize unused portion of product id.
339 for ( z = 0; z < 4; z++ )
340 pinquiryData->ProductId[12 + z] = ' ';
341
342 // Move firmware revision from IDENTIFY data to
343 // product revision in INQUIRY data.
344 for ( z = 0; z < 4; z += 2 )
345 {
346 pinquiryData->ProductRevisionLevel[z] = ((UCHAR *)identifyData.FirmwareRevision)[z + 1];
347 pinquiryData->ProductRevisionLevel[z + 1] = ((UCHAR *)identifyData.FirmwareRevision)[z];
348 }
349
350 SCpnt->result = DID_OK << 16;
351 padapter->SCpnt = NULL;
352 SCpnt->scsi_done (SCpnt);
353 return;
354 }
355 break;
356 }
357
358 default:
359 SCpnt->result = DID_OK << 16;
360 padapter->SCpnt = NULL;
361 SCpnt->scsi_done (SCpnt);
362 return;
363 }
364
365 irqerror:;
366 DEB(printk ("\npsi240i error Device Status: %X\n", status));
367 SCpnt->result = DecodeError (shost, status);
368 SCpnt->scsi_done (SCpnt);
369 }
370
371 static irqreturn_t do_Irq_Handler (int irq, void *dev_id, struct pt_regs *regs)
372 {
373 unsigned long flags;
374 struct Scsi_Host *dev = dev_id;
375
376 spin_lock_irqsave(dev->host_lock, flags);
377 Irq_Handler(irq, dev_id, regs);
378 spin_unlock_irqrestore(dev->host_lock, flags);
379 return IRQ_HANDLED;
380 }
381
382 /****************************************************************
383 * Name: Psi240i_QueueCommand
384 *
385 * Description: Process a queued command from the SCSI manager.
386 *
387 * Parameters: SCpnt - Pointer to SCSI command structure.
388 * done - Pointer to done function to call.
389 *
390 * Returns: Status code.
391 *
392 ****************************************************************/
393 static int Psi240i_QueueCommand (Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
394 {
395 UCHAR *cdb = (UCHAR *)SCpnt->cmnd; // Pointer to SCSI CDB
396 PADAPTER240I padapter = HOSTDATA (SCpnt->device->host); // Pointer to adapter control structure
397 POUR_DEVICE pdev = &padapter->device [SCpnt->device->id];// Pointer to device information
398 UCHAR rc; // command return code
399
400 SCpnt->scsi_done = done;
401 padapter->ide.ide.ides.spigot = pdev->spigot;
402 padapter->buffer = SCpnt->request_buffer;
403 if (done)
404 {
405 if ( !pdev->device )
406 {
407 SCpnt->result = DID_BAD_TARGET << 16;
408 done (SCpnt);
409 return 0;
410 }
411 }
412 else
413 {
414 printk("psi240i_queuecommand: %02X: done can't be NULL\n", *cdb);
415 return 0;
416 }
417
418 switch ( *cdb )
419 {
420 case SCSIOP_INQUIRY: // inquiry CDB
421 {
422 padapter->ide.ide.ide[6] = pdev->byte6;
423 padapter->ide.ide.ides.cmd = IDE_COMMAND_IDENTIFY;
424 break;
425 }
426
427 case SCSIOP_TEST_UNIT_READY: // test unit ready CDB
428 SCpnt->result = DID_OK << 16;
429 done (SCpnt);
430 return 0;
431
432 case SCSIOP_READ_CAPACITY: // read capctiy CDB
433 {
434 PREAD_CAPACITY_DATA pdata = (PREAD_CAPACITY_DATA)SCpnt->request_buffer;
435
436 pdata->blksiz = 0x20000;
437 XANY2SCSI ((UCHAR *)&pdata->blks, pdev->blocks);
438 SCpnt->result = DID_OK << 16;
439 done (SCpnt);
440 return 0;
441 }
442
443 case SCSIOP_VERIFY: // verify CDB
444 *(ULONG *)padapter->ide.ide.ides.lba = XSCSI2LONG (&cdb[2]);
445 padapter->ide.ide.ide[6] |= pdev->byte6;
446 padapter->ide.ide.ide[2] = (UCHAR)((USHORT)cdb[8] | ((USHORT)cdb[7] << 8));
447 padapter->ide.ide.ides.cmd = IDE_COMMAND_VERIFY;
448 break;
449
450 case SCSIOP_READ: // read10 CDB
451 padapter->startSector = XSCSI2LONG (&cdb[2]);
452 padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8);
453 SetupTransfer (padapter, pdev->byte6);
454 padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE;
455 break;
456
457 case SCSIOP_READ6: // read6 CDB
458 padapter->startSector = SCSI2LONG (&cdb[1]);
459 padapter->sectorCount = cdb[4];
460 SetupTransfer (padapter, pdev->byte6);
461 padapter->ide.ide.ides.cmd = IDE_CMD_READ_MULTIPLE;
462 break;
463
464 case SCSIOP_WRITE: // write10 CDB
465 padapter->startSector = XSCSI2LONG (&cdb[2]);
466 padapter->sectorCount = (USHORT)cdb[8] | ((USHORT)cdb[7] << 8);
467 SetupTransfer (padapter, pdev->byte6);
468 padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE;
469 break;
470 case SCSIOP_WRITE6: // write6 CDB
471 padapter->startSector = SCSI2LONG (&cdb[1]);
472 padapter->sectorCount = cdb[4];
473 SetupTransfer (padapter, pdev->byte6);
474 padapter->ide.ide.ides.cmd = IDE_CMD_WRITE_MULTIPLE;
475 break;
476
477 default:
478 DEB (printk ("psi240i_queuecommand: Unsupported command %02X\n", *cdb));
479 SCpnt->result = DID_ERROR << 16;
480 done (SCpnt);
481 return 0;
482 }
483
484 padapter->SCpnt = SCpnt; // Save this command data
485
486 rc = IdeCmd (padapter);
487 if ( rc )
488 {
489 padapter->expectingIRQ = 0;
490 DEB (printk ("psi240i_queuecommand: %02X, %02X: Device failed to respond for command\n", *cdb, padapter->ide.ide.ides.cmd));
491 SCpnt->result = DID_ERROR << 16;
492 done (SCpnt);
493 return 0;
494 }
495 DEB (printk("psi240i_queuecommand: %02X, %02X now waiting for interrupt ", *cdb, padapter->ide.ide.ides.cmd));
496 return 0;
497 }
498
499 /***************************************************************************
500 * Name: ReadChipMemory
501 *
502 * Description: Read information from controller memory.
503 *
504 * Parameters: psetup - Pointer to memory image of setup information.
505 * base - base address of memory.
506 * length - lenght of data space in bytes.
507 * port - I/O address of data port.
508 *
509 * Returns: Nothing.
510 *
511 **************************************************************************/
512 static void ReadChipMemory (void *pdata, USHORT base, USHORT length, USHORT port)
513 {
514 USHORT z, zz;
515 UCHAR *pd = (UCHAR *)pdata;
516 outb_p (SEL_NONE, port + REG_SEL_FAIL); // setup data port
517 zz = 0;
518 while ( zz < length )
519 {
520 outw_p (base, port + REG_ADDRESS); // setup address
521
522 for ( z = 0; z < 8; z++ )
523 {
524 if ( (zz + z) < length )
525 *pd++ = inb_p (port + z); // read data byte
526 }
527 zz += 8;
528 base += 8;
529 }
530 }
531 /****************************************************************
532 * Name: Psi240i_Detect
533 *
534 * Description: Detect and initialize our boards.
535 *
536 * Parameters: tpnt - Pointer to SCSI host template structure.
537 *
538 * Returns: Number of adapters found.
539 *
540 ****************************************************************/
541 static int Psi240i_Detect (Scsi_Host_Template *tpnt)
542 {
543 int board;
544 int count = 0;
545 int unit;
546 int z;
547 USHORT port, port_range = 16;
548 CHIP_CONFIG_N chipConfig;
549 CHIP_DEVICE_N chipDevice[8];
550 struct Scsi_Host *pshost;
551
552 for ( board = 0; board < MAXBOARDS; board++ ) // scan for I/O ports
553 {
554 pshost = NULL;
555 port = portAddr[board]; // get base address to test
556 if ( !request_region (port, port_range, "psi240i") )
557 continue;
558 if ( inb_p (port + REG_FAIL) != CHIP_ID ) // do the first test for likley hood that it is us
559 goto host_init_failure;
560 outb_p (SEL_NONE, port + REG_SEL_FAIL); // setup EEPROM/RAM access
561 outw (0, port + REG_ADDRESS); // setup EEPROM address zero
562 if ( inb_p (port) != 0x55 ) // test 1st byte
563 goto host_init_failure; // nope
564 if ( inb_p (port + 1) != 0xAA ) // test 2nd byte
565 goto host_init_failure; // nope
566
567 // at this point our board is found and can be accessed. Now we need to initialize
568 // our informatation and register with the kernel.
569
570
571 ReadChipMemory (&chipConfig, CHIP_CONFIG, sizeof (chipConfig), port);
572 ReadChipMemory (&chipDevice, CHIP_DEVICE, sizeof (chipDevice), port);
573 ReadChipMemory (&ChipSetup, CHIP_EEPROM_DATA, sizeof (ChipSetup), port);
574
575 if ( !chipConfig.numDrives ) // if no devices on this board
576 goto host_init_failure;
577
578 pshost = scsi_register (tpnt, sizeof(ADAPTER240I));
579 if(pshost == NULL)
580 goto host_init_failure;
581
582 PsiHost[chipConfig.irq - 10] = pshost;
583 pshost->unique_id = port;
584 pshost->io_port = port;
585 pshost->n_io_port = 16; /* Number of bytes of I/O space used */
586 pshost->irq = chipConfig.irq;
587
588 for ( z = 0; z < 11; z++ ) // build regester address array
589 HOSTDATA(pshost)->ports[z] = port + z;
590 HOSTDATA(pshost)->ports[11] = port + REG_FAIL;
591 HOSTDATA(pshost)->ports[12] = port + REG_ALT_STAT;
592 DEB (printk ("\nPorts ="));
593 DEB (for (z=0;z<13;z++) printk(" %#04X",HOSTDATA(pshost)->ports[z]););
594
595 for ( z = 0; z < chipConfig.numDrives; ++z )
596 {
597 unit = chipDevice[z].channel & 0x0F;
598 HOSTDATA(pshost)->device[unit].device = ChipSetup.setupDevice[unit].device;
599 HOSTDATA(pshost)->device[unit].byte6 = (UCHAR)(((unit & 1) << 4) | 0xE0);
600 HOSTDATA(pshost)->device[unit].spigot = (UCHAR)(1 << (unit >> 1));
601 HOSTDATA(pshost)->device[unit].sectors = ChipSetup.setupDevice[unit].sectors;
602 HOSTDATA(pshost)->device[unit].heads = ChipSetup.setupDevice[unit].heads;
603 HOSTDATA(pshost)->device[unit].cylinders = ChipSetup.setupDevice[unit].cylinders;
604 HOSTDATA(pshost)->device[unit].blocks = ChipSetup.setupDevice[unit].blocks;
605 DEB (printk ("\nHOSTDATA->device = %X", HOSTDATA(pshost)->device[unit].device));
606 DEB (printk ("\n byte6 = %X", HOSTDATA(pshost)->device[unit].byte6));
607 DEB (printk ("\n spigot = %X", HOSTDATA(pshost)->device[unit].spigot));
608 DEB (printk ("\n sectors = %X", HOSTDATA(pshost)->device[unit].sectors));
609 DEB (printk ("\n heads = %X", HOSTDATA(pshost)->device[unit].heads));
610 DEB (printk ("\n cylinders = %X", HOSTDATA(pshost)->device[unit].cylinders));
611 DEB (printk ("\n blocks = %lX", HOSTDATA(pshost)->device[unit].blocks));
612 }
613
614 if ( request_irq (chipConfig.irq, do_Irq_Handler, 0, "psi240i", pshost) == 0 )
615 {
616 printk("\nPSI-240I EIDE CONTROLLER: at I/O = %x IRQ = %d\n", port, chipConfig.irq);
617 printk("(C) 1997 Perceptive Solutions, Inc. All rights reserved\n\n");
618 count++;
619 continue;
620 }
621
622 printk ("Unable to allocate IRQ for PSI-240I controller.\n");
623
624 host_init_failure:
625
626 release_region (port, port_range);
627 if (pshost)
628 scsi_unregister (pshost);
629
630 }
631 return count;
632 }
633
634 static int Psi240i_Release(struct Scsi_Host *shost)
635 {
636 if (shost->irq)
637 free_irq(shost->irq, NULL);
638 if (shost->io_port && shost->n_io_port)
639 release_region(shost->io_port, shost->n_io_port);
640 scsi_unregister(shost);
641 return 0;
642 }
643
644 /****************************************************************
645 * Name: Psi240i_BiosParam
646 *
647 * Description: Process the biosparam request from the SCSI manager to
648 * return C/H/S data.
649 *
650 * Parameters: disk - Pointer to SCSI disk structure.
651 * dev - Major/minor number from kernel.
652 * geom - Pointer to integer array to place geometry data.
653 *
654 * Returns: zero.
655 *
656 ****************************************************************/
657 static int Psi240i_BiosParam (struct scsi_device *sdev, struct block_device *dev,
658 sector_t capacity, int geom[])
659 {
660 POUR_DEVICE pdev;
661
662 pdev = &(HOSTDATA(sdev->host)->device[sdev->id]);
663
664 geom[0] = pdev->heads;
665 geom[1] = pdev->sectors;
666 geom[2] = pdev->cylinders;
667 return 0;
668 }
669
670 MODULE_LICENSE("GPL");
671
672 static Scsi_Host_Template driver_template = {
673 .proc_name = "psi240i",
674 .name = "PSI-240I EIDE Disk Controller",
675 .detect = Psi240i_Detect,
676 .release = Psi240i_Release,
677 .queuecommand = Psi240i_QueueCommand,
678 .bios_param = Psi240i_BiosParam,
679 .can_queue = 1,
680 .this_id = -1,
681 .sg_tablesize = SG_NONE,
682 .cmd_per_lun = 1,
683 .use_clustering = DISABLE_CLUSTERING,
684 };
685 #include "scsi_module.c"
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree