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Diffstat (limited to 'drivers/scsi/psi240i.c')
-rw-r--r-- | drivers/scsi/psi240i.c | 685 |
1 files changed, 685 insertions, 0 deletions
diff --git a/drivers/scsi/psi240i.c b/drivers/scsi/psi240i.c new file mode 100644 index 000000000000..0f576d4ad0dd --- /dev/null +++ b/drivers/scsi/psi240i.c | |||
@@ -0,0 +1,685 @@ | |||
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" | ||