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authorJonathan Herman <hermanjl@cs.unc.edu>2013-01-22 10:38:37 -0500
committerJonathan Herman <hermanjl@cs.unc.edu>2013-01-22 10:38:37 -0500
commitfcc9d2e5a6c89d22b8b773a64fb4ad21ac318446 (patch)
treea57612d1888735a2ec7972891b68c1ac5ec8faea /drivers/scsi
parent8dea78da5cee153b8af9c07a2745f6c55057fe12 (diff)
Added missing tegra files.HEADmaster
Diffstat (limited to 'drivers/scsi')
-rw-r--r--drivers/scsi/fd_mcs.c1355
-rw-r--r--drivers/scsi/ibmmca.c2380
-rw-r--r--drivers/scsi/ibmvscsi/iseries_vscsi.c173
-rw-r--r--drivers/scsi/ibmvscsi/rpa_vscsi.c368
-rw-r--r--drivers/scsi/isci/firmware/Makefile19
-rw-r--r--drivers/scsi/isci/firmware/README36
-rw-r--r--drivers/scsi/isci/firmware/create_fw.c99
-rw-r--r--drivers/scsi/isci/firmware/create_fw.h77
-rw-r--r--drivers/scsi/scsi_wait_scan.c42
9 files changed, 4549 insertions, 0 deletions
diff --git a/drivers/scsi/fd_mcs.c b/drivers/scsi/fd_mcs.c
new file mode 100644
index 00000000000..a2c6135d337
--- /dev/null
+++ b/drivers/scsi/fd_mcs.c
@@ -0,0 +1,1355 @@
1/* fd_mcs.c -- Future Domain MCS 600/700 (or IBM OEM) driver
2 *
3 * FutureDomain MCS-600/700 v0.2 03/11/1998 by ZP Gu (zpg@castle.net)
4 *
5 * This driver is cloned from fdomain.* to specifically support
6 * the Future Domain MCS 600/700 MCA SCSI adapters. Some PS/2s
7 * also equipped with IBM Fast SCSI Adapter/A which is an OEM
8 * of MCS 700.
9 *
10 * This driver also supports Reply SB16/SCSI card (the SCSI part).
11 *
12 * What makes this driver different is that this driver is MCA only
13 * and it supports multiple adapters in the same system, IRQ
14 * sharing, some driver statistics, and maps highest SCSI id to sda.
15 * All cards are auto-detected.
16 *
17 * Assumptions: TMC-1800/18C50/18C30, BIOS >= 3.4
18 *
19 * LILO command-line options:
20 * fd_mcs=<FIFO_COUNT>[,<FIFO_SIZE>]
21 *
22 * ********************************************************
23 * Please see Copyrights/Comments in fdomain.* for credits.
24 * Following is from fdomain.c for acknowledgement:
25 *
26 * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu
27 * Revised: Wed Oct 2 11:10:55 1996 by r.faith@ieee.org
28 * Author: Rickard E. Faith, faith@cs.unc.edu
29 * Copyright 1992, 1993, 1994, 1995, 1996 Rickard E. Faith
30 *
31 * $Id: fdomain.c,v 5.45 1996/10/02 15:13:06 root Exp $
32
33 * This program is free software; you can redistribute it and/or modify it
34 * under the terms of the GNU General Public License as published by the
35 * Free Software Foundation; either version 2, or (at your option) any
36 * later version.
37
38 * This program is distributed in the hope that it will be useful, but
39 * WITHOUT ANY WARRANTY; without even the implied warranty of
40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41 * General Public License for more details.
42
43 * You should have received a copy of the GNU General Public License along
44 * with this program; if not, write to the Free Software Foundation, Inc.,
45 * 675 Mass Ave, Cambridge, MA 02139, USA.
46
47 **************************************************************************
48
49 NOTES ON USER DEFINABLE OPTIONS:
50
51 DEBUG: This turns on the printing of various debug information.
52
53 ENABLE_PARITY: This turns on SCSI parity checking. With the current
54 driver, all attached devices must support SCSI parity. If none of your
55 devices support parity, then you can probably get the driver to work by
56 turning this option off. I have no way of testing this, however, and it
57 would appear that no one ever uses this option.
58
59 FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
60 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
61 the SCSI device, an interrupt will be raised. Therefore, this could be as
62 low as 0, or as high as 16. Note, however, that values which are too high
63 or too low seem to prevent any interrupts from occurring, and thereby lock
64 up the machine. I have found that 2 is a good number, but throughput may
65 be increased by changing this value to values which are close to 2.
66 Please let me know if you try any different values.
67 [*****Now a runtime option*****]
68
69 RESELECTION: This is no longer an option, since I gave up trying to
70 implement it in version 4.x of this driver. It did not improve
71 performance at all and made the driver unstable (because I never found one
72 of the two race conditions which were introduced by the multiple
73 outstanding command code). The instability seems a very high price to pay
74 just so that you don't have to wait for the tape to rewind. If you want
75 this feature implemented, send me patches. I'll be happy to send a copy
76 of my (broken) driver to anyone who would like to see a copy.
77
78 **************************************************************************/
79
80#include <linux/module.h>
81#include <linux/init.h>
82#include <linux/interrupt.h>
83#include <linux/blkdev.h>
84#include <linux/errno.h>
85#include <linux/string.h>
86#include <linux/ioport.h>
87#include <linux/proc_fs.h>
88#include <linux/delay.h>
89#include <linux/mca.h>
90#include <linux/spinlock.h>
91#include <linux/slab.h>
92#include <scsi/scsicam.h>
93#include <linux/mca-legacy.h>
94
95#include <asm/io.h>
96#include <asm/system.h>
97
98#include "scsi.h"
99#include <scsi/scsi_host.h>
100
101#define DRIVER_VERSION "v0.2 by ZP Gu<zpg@castle.net>"
102
103/* START OF USER DEFINABLE OPTIONS */
104
105#define DEBUG 0 /* Enable debugging output */
106#define ENABLE_PARITY 1 /* Enable SCSI Parity */
107
108/* END OF USER DEFINABLE OPTIONS */
109
110#if DEBUG
111#define EVERY_ACCESS 0 /* Write a line on every scsi access */
112#define ERRORS_ONLY 1 /* Only write a line if there is an error */
113#define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
114#define DEBUG_ABORT 1 /* Debug abort() routine */
115#define DEBUG_RESET 1 /* Debug reset() routine */
116#define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
117#else
118#define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
119#define ERRORS_ONLY 0
120#define DEBUG_MESSAGES 0
121#define DEBUG_ABORT 0
122#define DEBUG_RESET 0
123#define DEBUG_RACE 0
124#endif
125
126/* Errors are reported on the line, so we don't need to report them again */
127#if EVERY_ACCESS
128#undef ERRORS_ONLY
129#define ERRORS_ONLY 0
130#endif
131
132#if ENABLE_PARITY
133#define PARITY_MASK 0x08
134#else
135#define PARITY_MASK 0x00
136#endif
137
138enum chip_type {
139 unknown = 0x00,
140 tmc1800 = 0x01,
141 tmc18c50 = 0x02,
142 tmc18c30 = 0x03,
143};
144
145enum {
146 in_arbitration = 0x02,
147 in_selection = 0x04,
148 in_other = 0x08,
149 disconnect = 0x10,
150 aborted = 0x20,
151 sent_ident = 0x40,
152};
153
154enum in_port_type {
155 Read_SCSI_Data = 0,
156 SCSI_Status = 1,
157 TMC_Status = 2,
158 FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
159 Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
160 LSB_ID_Code = 5,
161 MSB_ID_Code = 6,
162 Read_Loopback = 7,
163 SCSI_Data_NoACK = 8,
164 Interrupt_Status = 9,
165 Configuration1 = 10,
166 Configuration2 = 11, /* tmc18c50/tmc18c30 only */
167 Read_FIFO = 12,
168 FIFO_Data_Count = 14
169};
170
171enum out_port_type {
172 Write_SCSI_Data = 0,
173 SCSI_Cntl = 1,
174 Interrupt_Cntl = 2,
175 SCSI_Mode_Cntl = 3,
176 TMC_Cntl = 4,
177 Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
178 Write_Loopback = 7,
179 IO_Control = 11, /* tmc18c30 only */
180 Write_FIFO = 12
181};
182
183struct fd_hostdata {
184 unsigned long _bios_base;
185 int _bios_major;
186 int _bios_minor;
187 volatile int _in_command;
188 Scsi_Cmnd *_current_SC;
189 enum chip_type _chip;
190 int _adapter_mask;
191 int _fifo_count; /* Number of 512 byte blocks before INTR */
192
193 char _adapter_name[64];
194#if DEBUG_RACE
195 volatile int _in_interrupt_flag;
196#endif
197
198 int _SCSI_Mode_Cntl_port;
199 int _FIFO_Data_Count_port;
200 int _Interrupt_Cntl_port;
201 int _Interrupt_Status_port;
202 int _Interrupt_Cond_port;
203 int _Read_FIFO_port;
204 int _Read_SCSI_Data_port;
205 int _SCSI_Cntl_port;
206 int _SCSI_Data_NoACK_port;
207 int _SCSI_Status_port;
208 int _TMC_Cntl_port;
209 int _TMC_Status_port;
210 int _Write_FIFO_port;
211 int _Write_SCSI_Data_port;
212
213 int _FIFO_Size; /* = 0x2000; 8k FIFO for
214 pre-tmc18c30 chips */
215 /* simple stats */
216 int _Bytes_Read;
217 int _Bytes_Written;
218 int _INTR_Processed;
219};
220
221#define FD_MAX_HOSTS 3 /* enough? */
222
223#define HOSTDATA(shpnt) ((struct fd_hostdata *) shpnt->hostdata)
224#define bios_base (HOSTDATA(shpnt)->_bios_base)
225#define bios_major (HOSTDATA(shpnt)->_bios_major)
226#define bios_minor (HOSTDATA(shpnt)->_bios_minor)
227#define in_command (HOSTDATA(shpnt)->_in_command)
228#define current_SC (HOSTDATA(shpnt)->_current_SC)
229#define chip (HOSTDATA(shpnt)->_chip)
230#define adapter_mask (HOSTDATA(shpnt)->_adapter_mask)
231#define FIFO_COUNT (HOSTDATA(shpnt)->_fifo_count)
232#define adapter_name (HOSTDATA(shpnt)->_adapter_name)
233#if DEBUG_RACE
234#define in_interrupt_flag (HOSTDATA(shpnt)->_in_interrupt_flag)
235#endif
236#define SCSI_Mode_Cntl_port (HOSTDATA(shpnt)->_SCSI_Mode_Cntl_port)
237#define FIFO_Data_Count_port (HOSTDATA(shpnt)->_FIFO_Data_Count_port)
238#define Interrupt_Cntl_port (HOSTDATA(shpnt)->_Interrupt_Cntl_port)
239#define Interrupt_Status_port (HOSTDATA(shpnt)->_Interrupt_Status_port)
240#define Interrupt_Cond_port (HOSTDATA(shpnt)->_Interrupt_Cond_port)
241#define Read_FIFO_port (HOSTDATA(shpnt)->_Read_FIFO_port)
242#define Read_SCSI_Data_port (HOSTDATA(shpnt)->_Read_SCSI_Data_port)
243#define SCSI_Cntl_port (HOSTDATA(shpnt)->_SCSI_Cntl_port)
244#define SCSI_Data_NoACK_port (HOSTDATA(shpnt)->_SCSI_Data_NoACK_port)
245#define SCSI_Status_port (HOSTDATA(shpnt)->_SCSI_Status_port)
246#define TMC_Cntl_port (HOSTDATA(shpnt)->_TMC_Cntl_port)
247#define TMC_Status_port (HOSTDATA(shpnt)->_TMC_Status_port)
248#define Write_FIFO_port (HOSTDATA(shpnt)->_Write_FIFO_port)
249#define Write_SCSI_Data_port (HOSTDATA(shpnt)->_Write_SCSI_Data_port)
250#define FIFO_Size (HOSTDATA(shpnt)->_FIFO_Size)
251#define Bytes_Read (HOSTDATA(shpnt)->_Bytes_Read)
252#define Bytes_Written (HOSTDATA(shpnt)->_Bytes_Written)
253#define INTR_Processed (HOSTDATA(shpnt)->_INTR_Processed)
254
255struct fd_mcs_adapters_struct {
256 char *name;
257 int id;
258 enum chip_type fd_chip;
259 int fifo_size;
260 int fifo_count;
261};
262
263#define REPLY_ID 0x5137
264
265static struct fd_mcs_adapters_struct fd_mcs_adapters[] = {
266 {"Future Domain SCSI Adapter MCS-700(18C50)",
267 0x60e9,
268 tmc18c50,
269 0x2000,
270 4},
271 {"Future Domain SCSI Adapter MCS-600/700(TMC-1800)",
272 0x6127,
273 tmc1800,
274 0x2000,
275 4},
276 {"Reply Sound Blaster/SCSI Adapter",
277 REPLY_ID,
278 tmc18c30,
279 0x800,
280 2},
281};
282
283#define FD_BRDS ARRAY_SIZE(fd_mcs_adapters)
284
285static irqreturn_t fd_mcs_intr(int irq, void *dev_id);
286
287static unsigned long addresses[] = { 0xc8000, 0xca000, 0xce000, 0xde000 };
288static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
289static unsigned short interrupts[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
290
291/* host information */
292static int found = 0;
293static struct Scsi_Host *hosts[FD_MAX_HOSTS + 1] = { NULL };
294
295static int user_fifo_count = 0;
296static int user_fifo_size = 0;
297
298#ifndef MODULE
299static int __init fd_mcs_setup(char *str)
300{
301 static int done_setup = 0;
302 int ints[3];
303
304 get_options(str, 3, ints);
305 if (done_setup++ || ints[0] < 1 || ints[0] > 2 || ints[1] < 1 || ints[1] > 16) {
306 printk("fd_mcs: usage: fd_mcs=FIFO_COUNT, FIFO_SIZE\n");
307 return 0;
308 }
309
310 user_fifo_count = ints[0] >= 1 ? ints[1] : 0;
311 user_fifo_size = ints[0] >= 2 ? ints[2] : 0;
312 return 1;
313}
314
315__setup("fd_mcs=", fd_mcs_setup);
316#endif /* !MODULE */
317
318static void print_banner(struct Scsi_Host *shpnt)
319{
320 printk("scsi%d <fd_mcs>: ", shpnt->host_no);
321
322 if (bios_base) {
323 printk("BIOS at 0x%lX", bios_base);
324 } else {
325 printk("No BIOS");
326 }
327
328 printk(", HostID %d, %s Chip, IRQ %d, IO 0x%lX\n", shpnt->this_id, chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? "TMC-18C30" : (chip == tmc1800 ? "TMC-1800" : "Unknown")), shpnt->irq, shpnt->io_port);
329}
330
331
332static void do_pause(unsigned amount)
333{ /* Pause for amount*10 milliseconds */
334 do {
335 mdelay(10);
336 } while (--amount);
337}
338
339static void fd_mcs_make_bus_idle(struct Scsi_Host *shpnt)
340{
341 outb(0, SCSI_Cntl_port);
342 outb(0, SCSI_Mode_Cntl_port);
343 if (chip == tmc18c50 || chip == tmc18c30)
344 outb(0x21 | PARITY_MASK, TMC_Cntl_port); /* Clear forced intr. */
345 else
346 outb(0x01 | PARITY_MASK, TMC_Cntl_port);
347}
348
349static int fd_mcs_detect(struct scsi_host_template * tpnt)
350{
351 int loop;
352 struct Scsi_Host *shpnt;
353
354 /* get id, port, bios, irq */
355 int slot;
356 u_char pos2, pos3, pos4;
357 int id, port, irq;
358 unsigned long bios;
359
360 /* if not MCA machine, return */
361 if (!MCA_bus)
362 return 0;
363
364 /* changeable? */
365 id = 7;
366
367 for (loop = 0; loop < FD_BRDS; loop++) {
368 slot = 0;
369 while (MCA_NOTFOUND != (slot = mca_find_adapter(fd_mcs_adapters[loop].id, slot))) {
370
371 /* if we get this far, an adapter has been detected and is
372 enabled */
373
374 printk(KERN_INFO "scsi <fd_mcs>: %s at slot %d\n", fd_mcs_adapters[loop].name, slot + 1);
375
376 pos2 = mca_read_stored_pos(slot, 2);
377 pos3 = mca_read_stored_pos(slot, 3);
378 pos4 = mca_read_stored_pos(slot, 4);
379
380 /* ready for next probe */
381 slot++;
382
383 if (fd_mcs_adapters[loop].id == REPLY_ID) { /* reply card */
384 static int reply_irq[] = { 10, 11, 14, 15 };
385
386 bios = 0; /* no bios */
387
388 if (pos2 & 0x2)
389 port = ports[pos4 & 0x3];
390 else
391 continue;
392
393 /* can't really disable it, same as irq=10 */
394 irq = reply_irq[((pos4 >> 2) & 0x1) + 2 * ((pos4 >> 4) & 0x1)];
395 } else {
396 bios = addresses[pos2 >> 6];
397 port = ports[(pos2 >> 4) & 0x03];
398 irq = interrupts[(pos2 >> 1) & 0x07];
399 }
400
401 if (irq) {
402 /* claim the slot */
403 mca_set_adapter_name(slot - 1, fd_mcs_adapters[loop].name);
404
405 /* check irq/region */
406 if (request_irq(irq, fd_mcs_intr, IRQF_SHARED, "fd_mcs", hosts)) {
407 printk(KERN_ERR "fd_mcs: interrupt is not available, skipping...\n");
408 continue;
409 }
410
411 /* request I/O region */
412 if (request_region(port, 0x10, "fd_mcs")) {
413 printk(KERN_ERR "fd_mcs: I/O region is already in use, skipping...\n");
414 continue;
415 }
416 /* register */
417 if (!(shpnt = scsi_register(tpnt, sizeof(struct fd_hostdata)))) {
418 printk(KERN_ERR "fd_mcs: scsi_register() failed\n");
419 release_region(port, 0x10);
420 free_irq(irq, hosts);
421 continue;
422 }
423
424
425 /* save name */
426 strcpy(adapter_name, fd_mcs_adapters[loop].name);
427
428 /* chip/fifo */
429 chip = fd_mcs_adapters[loop].fd_chip;
430 /* use boot time value if available */
431 FIFO_COUNT = user_fifo_count ? user_fifo_count : fd_mcs_adapters[loop].fifo_count;
432 FIFO_Size = user_fifo_size ? user_fifo_size : fd_mcs_adapters[loop].fifo_size;
433
434/* FIXME: Do we need to keep this bit of code inside NOT_USED around at all? */
435#ifdef NOT_USED
436 /* *************************************************** */
437 /* Try to toggle 32-bit mode. This only
438 works on an 18c30 chip. (User reports
439 say this works, so we should switch to
440 it in the near future.) */
441 outb(0x80, port + IO_Control);
442 if ((inb(port + Configuration2) & 0x80) == 0x80) {
443 outb(0x00, port + IO_Control);
444 if ((inb(port + Configuration2) & 0x80) == 0x00) {
445 chip = tmc18c30;
446 FIFO_Size = 0x800; /* 2k FIFO */
447
448 printk("FIRST: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size);
449 }
450 }
451
452 /* That should have worked, but appears to
453 have problems. Let's assume it is an
454 18c30 if the RAM is disabled. */
455
456 if (inb(port + Configuration2) & 0x02) {
457 chip = tmc18c30;
458 FIFO_Size = 0x800; /* 2k FIFO */
459
460 printk("SECOND: chip=%s, fifo_size=0x%x\n", (chip == tmc18c30) ? "tmc18c30" : "tmc18c50", FIFO_Size);
461 }
462 /* *************************************************** */
463#endif
464
465 /* IBM/ANSI scsi scan ordering */
466 /* Stick this back in when the scsi.c changes are there */
467 shpnt->reverse_ordering = 1;
468
469
470 /* saving info */
471 hosts[found++] = shpnt;
472
473 shpnt->this_id = id;
474 shpnt->irq = irq;
475 shpnt->io_port = port;
476 shpnt->n_io_port = 0x10;
477
478 /* save */
479 bios_base = bios;
480 adapter_mask = (1 << id);
481
482 /* save more */
483 SCSI_Mode_Cntl_port = port + SCSI_Mode_Cntl;
484 FIFO_Data_Count_port = port + FIFO_Data_Count;
485 Interrupt_Cntl_port = port + Interrupt_Cntl;
486 Interrupt_Status_port = port + Interrupt_Status;
487 Interrupt_Cond_port = port + Interrupt_Cond;
488 Read_FIFO_port = port + Read_FIFO;
489 Read_SCSI_Data_port = port + Read_SCSI_Data;
490 SCSI_Cntl_port = port + SCSI_Cntl;
491 SCSI_Data_NoACK_port = port + SCSI_Data_NoACK;
492 SCSI_Status_port = port + SCSI_Status;
493 TMC_Cntl_port = port + TMC_Cntl;
494 TMC_Status_port = port + TMC_Status;
495 Write_FIFO_port = port + Write_FIFO;
496 Write_SCSI_Data_port = port + Write_SCSI_Data;
497
498 Bytes_Read = 0;
499 Bytes_Written = 0;
500 INTR_Processed = 0;
501
502 /* say something */
503 print_banner(shpnt);
504
505 /* reset */
506 outb(1, SCSI_Cntl_port);
507 do_pause(2);
508 outb(0, SCSI_Cntl_port);
509 do_pause(115);
510 outb(0, SCSI_Mode_Cntl_port);
511 outb(PARITY_MASK, TMC_Cntl_port);
512 /* done reset */
513 }
514 }
515
516 if (found == FD_MAX_HOSTS) {
517 printk("fd_mcs: detecting reached max=%d host adapters.\n", FD_MAX_HOSTS);
518 break;
519 }
520 }
521
522 return found;
523}
524
525static const char *fd_mcs_info(struct Scsi_Host *shpnt)
526{
527 return adapter_name;
528}
529
530static int TOTAL_INTR = 0;
531
532/*
533 * inout : decides on the direction of the dataflow and the meaning of the
534 * variables
535 * buffer: If inout==FALSE data is being written to it else read from it
536 * *start: If inout==FALSE start of the valid data in the buffer
537 * offset: If inout==FALSE offset from the beginning of the imaginary file
538 * from which we start writing into the buffer
539 * length: If inout==FALSE max number of bytes to be written into the buffer
540 * else number of bytes in the buffer
541 */
542static int fd_mcs_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout)
543{
544 int len = 0;
545
546 if (inout)
547 return (-ENOSYS);
548
549 *start = buffer + offset;
550
551 len += sprintf(buffer + len, "Future Domain MCS-600/700 Driver %s\n", DRIVER_VERSION);
552 len += sprintf(buffer + len, "HOST #%d: %s\n", shpnt->host_no, adapter_name);
553 len += sprintf(buffer + len, "FIFO Size=0x%x, FIFO Count=%d\n", FIFO_Size, FIFO_COUNT);
554 len += sprintf(buffer + len, "DriverCalls=%d, Interrupts=%d, BytesRead=%d, BytesWrite=%d\n\n", TOTAL_INTR, INTR_Processed, Bytes_Read, Bytes_Written);
555
556 if ((len -= offset) <= 0)
557 return 0;
558 if (len > length)
559 len = length;
560 return len;
561}
562
563static int fd_mcs_select(struct Scsi_Host *shpnt, int target)
564{
565 int status;
566 unsigned long timeout;
567
568 outb(0x82, SCSI_Cntl_port); /* Bus Enable + Select */
569 outb(adapter_mask | (1 << target), SCSI_Data_NoACK_port);
570
571 /* Stop arbitration and enable parity */
572 outb(PARITY_MASK, TMC_Cntl_port);
573
574 timeout = 350; /* 350mS -- because of timeouts
575 (was 250mS) */
576
577 do {
578 status = inb(SCSI_Status_port); /* Read adapter status */
579 if (status & 1) { /* Busy asserted */
580 /* Enable SCSI Bus (on error, should make bus idle with 0) */
581 outb(0x80, SCSI_Cntl_port);
582 return 0;
583 }
584 udelay(1000); /* wait one msec */
585 } while (--timeout);
586
587 /* Make bus idle */
588 fd_mcs_make_bus_idle(shpnt);
589#if EVERY_ACCESS
590 if (!target)
591 printk("Selection failed\n");
592#endif
593#if ERRORS_ONLY
594 if (!target) {
595 static int flag = 0;
596
597 if (!flag) /* Skip first failure for all chips. */
598 ++flag;
599 else
600 printk("fd_mcs: Selection failed\n");
601 }
602#endif
603 return 1;
604}
605
606static void my_done(struct Scsi_Host *shpnt, int error)
607{
608 if (in_command) {
609 in_command = 0;
610 outb(0x00, Interrupt_Cntl_port);
611 fd_mcs_make_bus_idle(shpnt);
612 current_SC->result = error;
613 current_SC->scsi_done(current_SC);
614 } else {
615 panic("fd_mcs: my_done() called outside of command\n");
616 }
617#if DEBUG_RACE
618 in_interrupt_flag = 0;
619#endif
620}
621
622/* only my_done needs to be protected */
623static irqreturn_t fd_mcs_intr(int irq, void *dev_id)
624{
625 unsigned long flags;
626 int status;
627 int done = 0;
628 unsigned data_count, tmp_count;
629
630 int i = 0;
631 struct Scsi_Host *shpnt;
632
633 TOTAL_INTR++;
634
635 /* search for one adapter-response on shared interrupt */
636 while ((shpnt = hosts[i++])) {
637 if ((inb(TMC_Status_port)) & 1)
638 break;
639 }
640
641 /* return if some other device on this IRQ caused the interrupt */
642 if (!shpnt) {
643 return IRQ_NONE;
644 }
645
646 INTR_Processed++;
647
648 outb(0x00, Interrupt_Cntl_port);
649
650 /* Abort calls my_done, so we do nothing here. */
651 if (current_SC->SCp.phase & aborted) {
652#if DEBUG_ABORT
653 printk("Interrupt after abort, ignoring\n");
654#endif
655 /* return IRQ_HANDLED; */
656 }
657#if DEBUG_RACE
658 ++in_interrupt_flag;
659#endif
660
661 if (current_SC->SCp.phase & in_arbitration) {
662 status = inb(TMC_Status_port); /* Read adapter status */
663 if (!(status & 0x02)) {
664#if EVERY_ACCESS
665 printk(" AFAIL ");
666#endif
667 spin_lock_irqsave(shpnt->host_lock, flags);
668 my_done(shpnt, DID_BUS_BUSY << 16);
669 spin_unlock_irqrestore(shpnt->host_lock, flags);
670 return IRQ_HANDLED;
671 }
672 current_SC->SCp.phase = in_selection;
673
674 outb(0x40 | FIFO_COUNT, Interrupt_Cntl_port);
675
676 outb(0x82, SCSI_Cntl_port); /* Bus Enable + Select */
677 outb(adapter_mask | (1 << scmd_id(current_SC)), SCSI_Data_NoACK_port);
678
679 /* Stop arbitration and enable parity */
680 outb(0x10 | PARITY_MASK, TMC_Cntl_port);
681#if DEBUG_RACE
682 in_interrupt_flag = 0;
683#endif
684 return IRQ_HANDLED;
685 } else if (current_SC->SCp.phase & in_selection) {
686 status = inb(SCSI_Status_port);
687 if (!(status & 0x01)) {
688 /* Try again, for slow devices */
689 if (fd_mcs_select(shpnt, scmd_id(current_SC))) {
690#if EVERY_ACCESS
691 printk(" SFAIL ");
692#endif
693 spin_lock_irqsave(shpnt->host_lock, flags);
694 my_done(shpnt, DID_NO_CONNECT << 16);
695 spin_unlock_irqrestore(shpnt->host_lock, flags);
696 return IRQ_HANDLED;
697 } else {
698#if EVERY_ACCESS
699 printk(" AltSel ");
700#endif
701 /* Stop arbitration and enable parity */
702 outb(0x10 | PARITY_MASK, TMC_Cntl_port);
703 }
704 }
705 current_SC->SCp.phase = in_other;
706 outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port);
707 outb(0x80, SCSI_Cntl_port);
708#if DEBUG_RACE
709 in_interrupt_flag = 0;
710#endif
711 return IRQ_HANDLED;
712 }
713
714 /* current_SC->SCp.phase == in_other: this is the body of the routine */
715
716 status = inb(SCSI_Status_port);
717
718 if (status & 0x10) { /* REQ */
719
720 switch (status & 0x0e) {
721
722 case 0x08: /* COMMAND OUT */
723 outb(current_SC->cmnd[current_SC->SCp.sent_command++], Write_SCSI_Data_port);
724#if EVERY_ACCESS
725 printk("CMD = %x,", current_SC->cmnd[current_SC->SCp.sent_command - 1]);
726#endif
727 break;
728 case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
729 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
730 current_SC->SCp.have_data_in = -1;
731 outb(0xd0 | PARITY_MASK, TMC_Cntl_port);
732 }
733 break;
734 case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
735 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
736 current_SC->SCp.have_data_in = 1;
737 outb(0x90 | PARITY_MASK, TMC_Cntl_port);
738 }
739 break;
740 case 0x0c: /* STATUS IN */
741 current_SC->SCp.Status = inb(Read_SCSI_Data_port);
742#if EVERY_ACCESS
743 printk("Status = %x, ", current_SC->SCp.Status);
744#endif
745#if ERRORS_ONLY
746 if (current_SC->SCp.Status && current_SC->SCp.Status != 2 && current_SC->SCp.Status != 8) {
747 printk("ERROR fd_mcs: target = %d, command = %x, status = %x\n", current_SC->device->id, current_SC->cmnd[0], current_SC->SCp.Status);
748 }
749#endif
750 break;
751 case 0x0a: /* MESSAGE OUT */
752 outb(MESSAGE_REJECT, Write_SCSI_Data_port); /* Reject */
753 break;
754 case 0x0e: /* MESSAGE IN */
755 current_SC->SCp.Message = inb(Read_SCSI_Data_port);
756#if EVERY_ACCESS
757 printk("Message = %x, ", current_SC->SCp.Message);
758#endif
759 if (!current_SC->SCp.Message)
760 ++done;
761#if DEBUG_MESSAGES || EVERY_ACCESS
762 if (current_SC->SCp.Message) {
763 printk("fd_mcs: message = %x\n", current_SC->SCp.Message);
764 }
765#endif
766 break;
767 }
768 }
769
770 if (chip == tmc1800 && !current_SC->SCp.have_data_in && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
771 /* We have to get the FIFO direction
772 correct, so I've made a table based
773 on the SCSI Standard of which commands
774 appear to require a DATA OUT phase.
775 */
776 /*
777 p. 94: Command for all device types
778 CHANGE DEFINITION 40 DATA OUT
779 COMPARE 39 DATA OUT
780 COPY 18 DATA OUT
781 COPY AND VERIFY 3a DATA OUT
782 INQUIRY 12
783 LOG SELECT 4c DATA OUT
784 LOG SENSE 4d
785 MODE SELECT (6) 15 DATA OUT
786 MODE SELECT (10) 55 DATA OUT
787 MODE SENSE (6) 1a
788 MODE SENSE (10) 5a
789 READ BUFFER 3c
790 RECEIVE DIAGNOSTIC RESULTS 1c
791 REQUEST SENSE 03
792 SEND DIAGNOSTIC 1d DATA OUT
793 TEST UNIT READY 00
794 WRITE BUFFER 3b DATA OUT
795
796 p.178: Commands for direct-access devices (not listed on p. 94)
797 FORMAT UNIT 04 DATA OUT
798 LOCK-UNLOCK CACHE 36
799 PRE-FETCH 34
800 PREVENT-ALLOW MEDIUM REMOVAL 1e
801 READ (6)/RECEIVE 08
802 READ (10) 3c
803 READ CAPACITY 25
804 READ DEFECT DATA (10) 37
805 READ LONG 3e
806 REASSIGN BLOCKS 07 DATA OUT
807 RELEASE 17
808 RESERVE 16 DATA OUT
809 REZERO UNIT/REWIND 01
810 SEARCH DATA EQUAL (10) 31 DATA OUT
811 SEARCH DATA HIGH (10) 30 DATA OUT
812 SEARCH DATA LOW (10) 32 DATA OUT
813 SEEK (6) 0b
814 SEEK (10) 2b
815 SET LIMITS (10) 33
816 START STOP UNIT 1b
817 SYNCHRONIZE CACHE 35
818 VERIFY (10) 2f
819 WRITE (6)/PRINT/SEND 0a DATA OUT
820 WRITE (10)/SEND 2a DATA OUT
821 WRITE AND VERIFY (10) 2e DATA OUT
822 WRITE LONG 3f DATA OUT
823 WRITE SAME 41 DATA OUT ?
824
825 p. 261: Commands for sequential-access devices (not previously listed)
826 ERASE 19
827 LOAD UNLOAD 1b
828 LOCATE 2b
829 READ BLOCK LIMITS 05
830 READ POSITION 34
831 READ REVERSE 0f
832 RECOVER BUFFERED DATA 14
833 SPACE 11
834 WRITE FILEMARKS 10 ?
835
836 p. 298: Commands for printer devices (not previously listed)
837 ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) *****
838 SLEW AND PRINT 0b DATA OUT -- same as seek
839 STOP PRINT 1b
840 SYNCHRONIZE BUFFER 10
841
842 p. 315: Commands for processor devices (not previously listed)
843
844 p. 321: Commands for write-once devices (not previously listed)
845 MEDIUM SCAN 38
846 READ (12) a8
847 SEARCH DATA EQUAL (12) b1 DATA OUT
848 SEARCH DATA HIGH (12) b0 DATA OUT
849 SEARCH DATA LOW (12) b2 DATA OUT
850 SET LIMITS (12) b3
851 VERIFY (12) af
852 WRITE (12) aa DATA OUT
853 WRITE AND VERIFY (12) ae DATA OUT
854
855 p. 332: Commands for CD-ROM devices (not previously listed)
856 PAUSE/RESUME 4b
857 PLAY AUDIO (10) 45
858 PLAY AUDIO (12) a5
859 PLAY AUDIO MSF 47
860 PLAY TRACK RELATIVE (10) 49
861 PLAY TRACK RELATIVE (12) a9
862 READ HEADER 44
863 READ SUB-CHANNEL 42
864 READ TOC 43
865
866 p. 370: Commands for scanner devices (not previously listed)
867 GET DATA BUFFER STATUS 34
868 GET WINDOW 25
869 OBJECT POSITION 31
870 SCAN 1b
871 SET WINDOW 24 DATA OUT
872
873 p. 391: Commands for optical memory devices (not listed)
874 ERASE (10) 2c
875 ERASE (12) ac
876 MEDIUM SCAN 38 DATA OUT
877 READ DEFECT DATA (12) b7
878 READ GENERATION 29
879 READ UPDATED BLOCK 2d
880 UPDATE BLOCK 3d DATA OUT
881
882 p. 419: Commands for medium changer devices (not listed)
883 EXCHANGE MEDIUM 46
884 INITIALIZE ELEMENT STATUS 07
885 MOVE MEDIUM a5
886 POSITION TO ELEMENT 2b
887 READ ELEMENT STATUS b8
888 REQUEST VOL. ELEMENT ADDRESS b5
889 SEND VOLUME TAG b6 DATA OUT
890
891 p. 454: Commands for communications devices (not listed previously)
892 GET MESSAGE (6) 08
893 GET MESSAGE (10) 28
894 GET MESSAGE (12) a8
895 */
896
897 switch (current_SC->cmnd[0]) {
898 case CHANGE_DEFINITION:
899 case COMPARE:
900 case COPY:
901 case COPY_VERIFY:
902 case LOG_SELECT:
903 case MODE_SELECT:
904 case MODE_SELECT_10:
905 case SEND_DIAGNOSTIC:
906 case WRITE_BUFFER:
907
908 case FORMAT_UNIT:
909 case REASSIGN_BLOCKS:
910 case RESERVE:
911 case SEARCH_EQUAL:
912 case SEARCH_HIGH:
913 case SEARCH_LOW:
914 case WRITE_6:
915 case WRITE_10:
916 case WRITE_VERIFY:
917 case 0x3f:
918 case 0x41:
919
920 case 0xb1:
921 case 0xb0:
922 case 0xb2:
923 case 0xaa:
924 case 0xae:
925
926 case 0x24:
927
928 case 0x38:
929 case 0x3d:
930
931 case 0xb6:
932
933 case 0xea: /* alternate number for WRITE LONG */
934
935 current_SC->SCp.have_data_in = -1;
936 outb(0xd0 | PARITY_MASK, TMC_Cntl_port);
937 break;
938
939 case 0x00:
940 default:
941
942 current_SC->SCp.have_data_in = 1;
943 outb(0x90 | PARITY_MASK, TMC_Cntl_port);
944 break;
945 }
946 }
947
948 if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
949 while ((data_count = FIFO_Size - inw(FIFO_Data_Count_port)) > 512) {
950#if EVERY_ACCESS
951 printk("DC=%d, ", data_count);
952#endif
953 if (data_count > current_SC->SCp.this_residual)
954 data_count = current_SC->SCp.this_residual;
955 if (data_count > 0) {
956#if EVERY_ACCESS
957 printk("%d OUT, ", data_count);
958#endif
959 if (data_count == 1) {
960 Bytes_Written++;
961
962 outb(*current_SC->SCp.ptr++, Write_FIFO_port);
963 --current_SC->SCp.this_residual;
964 } else {
965 data_count >>= 1;
966 tmp_count = data_count << 1;
967 outsw(Write_FIFO_port, current_SC->SCp.ptr, data_count);
968 current_SC->SCp.ptr += tmp_count;
969 Bytes_Written += tmp_count;
970 current_SC->SCp.this_residual -= tmp_count;
971 }
972 }
973 if (!current_SC->SCp.this_residual) {
974 if (current_SC->SCp.buffers_residual) {
975 --current_SC->SCp.buffers_residual;
976 ++current_SC->SCp.buffer;
977 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
978 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
979 } else
980 break;
981 }
982 }
983 } else if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
984 while ((data_count = inw(FIFO_Data_Count_port)) > 0) {
985#if EVERY_ACCESS
986 printk("DC=%d, ", data_count);
987#endif
988 if (data_count > current_SC->SCp.this_residual)
989 data_count = current_SC->SCp.this_residual;
990 if (data_count) {
991#if EVERY_ACCESS
992 printk("%d IN, ", data_count);
993#endif
994 if (data_count == 1) {
995 Bytes_Read++;
996 *current_SC->SCp.ptr++ = inb(Read_FIFO_port);
997 --current_SC->SCp.this_residual;
998 } else {
999 data_count >>= 1; /* Number of words */
1000 tmp_count = data_count << 1;
1001 insw(Read_FIFO_port, current_SC->SCp.ptr, data_count);
1002 current_SC->SCp.ptr += tmp_count;
1003 Bytes_Read += tmp_count;
1004 current_SC->SCp.this_residual -= tmp_count;
1005 }
1006 }
1007 if (!current_SC->SCp.this_residual && current_SC->SCp.buffers_residual) {
1008 --current_SC->SCp.buffers_residual;
1009 ++current_SC->SCp.buffer;
1010 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1011 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1012 }
1013 }
1014 }
1015
1016 if (done) {
1017#if EVERY_ACCESS
1018 printk(" ** IN DONE %d ** ", current_SC->SCp.have_data_in);
1019#endif
1020
1021#if EVERY_ACCESS
1022 printk("BEFORE MY_DONE. . .");
1023#endif
1024 spin_lock_irqsave(shpnt->host_lock, flags);
1025 my_done(shpnt, (current_SC->SCp.Status & 0xff)
1026 | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16));
1027 spin_unlock_irqrestore(shpnt->host_lock, flags);
1028#if EVERY_ACCESS
1029 printk("RETURNING.\n");
1030#endif
1031
1032 } else {
1033 if (current_SC->SCp.phase & disconnect) {
1034 outb(0xd0 | FIFO_COUNT, Interrupt_Cntl_port);
1035 outb(0x00, SCSI_Cntl_port);
1036 } else {
1037 outb(0x90 | FIFO_COUNT, Interrupt_Cntl_port);
1038 }
1039 }
1040#if DEBUG_RACE
1041 in_interrupt_flag = 0;
1042#endif
1043 return IRQ_HANDLED;
1044}
1045
1046static int fd_mcs_release(struct Scsi_Host *shpnt)
1047{
1048 int i, this_host, irq_usage;
1049
1050 release_region(shpnt->io_port, shpnt->n_io_port);
1051
1052 this_host = -1;
1053 irq_usage = 0;
1054 for (i = 0; i < found; i++) {
1055 if (shpnt == hosts[i])
1056 this_host = i;
1057 if (shpnt->irq == hosts[i]->irq)
1058 irq_usage++;
1059 }
1060
1061 /* only for the last one */
1062 if (1 == irq_usage)
1063 free_irq(shpnt->irq, hosts);
1064
1065 found--;
1066
1067 for (i = this_host; i < found; i++)
1068 hosts[i] = hosts[i + 1];
1069
1070 hosts[found] = NULL;
1071
1072 return 0;
1073}
1074
1075static int fd_mcs_queue_lck(Scsi_Cmnd * SCpnt, void (*done) (Scsi_Cmnd *))
1076{
1077 struct Scsi_Host *shpnt = SCpnt->device->host;
1078
1079 if (in_command) {
1080 panic("fd_mcs: fd_mcs_queue() NOT REENTRANT!\n");
1081 }
1082#if EVERY_ACCESS
1083 printk("queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1084 SCpnt->target, *(unsigned char *) SCpnt->cmnd,
1085 scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
1086#endif
1087
1088 fd_mcs_make_bus_idle(shpnt);
1089
1090 SCpnt->scsi_done = done; /* Save this for the done function */
1091 current_SC = SCpnt;
1092
1093 /* Initialize static data */
1094
1095 if (scsi_bufflen(current_SC)) {
1096 current_SC->SCp.buffer = scsi_sglist(current_SC);
1097 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1098 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1099 current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1;
1100 } else {
1101 current_SC->SCp.ptr = NULL;
1102 current_SC->SCp.this_residual = 0;
1103 current_SC->SCp.buffer = NULL;
1104 current_SC->SCp.buffers_residual = 0;
1105 }
1106
1107
1108 current_SC->SCp.Status = 0;
1109 current_SC->SCp.Message = 0;
1110 current_SC->SCp.have_data_in = 0;
1111 current_SC->SCp.sent_command = 0;
1112 current_SC->SCp.phase = in_arbitration;
1113
1114 /* Start arbitration */
1115 outb(0x00, Interrupt_Cntl_port);
1116 outb(0x00, SCSI_Cntl_port); /* Disable data drivers */
1117 outb(adapter_mask, SCSI_Data_NoACK_port); /* Set our id bit */
1118 in_command = 1;
1119 outb(0x20, Interrupt_Cntl_port);
1120 outb(0x14 | PARITY_MASK, TMC_Cntl_port); /* Start arbitration */
1121
1122 return 0;
1123}
1124
1125static DEF_SCSI_QCMD(fd_mcs_queue)
1126
1127#if DEBUG_ABORT || DEBUG_RESET
1128static void fd_mcs_print_info(Scsi_Cmnd * SCpnt)
1129{
1130 unsigned int imr;
1131 unsigned int irr;
1132 unsigned int isr;
1133 struct Scsi_Host *shpnt = SCpnt->host;
1134
1135 if (!SCpnt || !SCpnt->host) {
1136 printk("fd_mcs: cannot provide detailed information\n");
1137 }
1138
1139 printk("%s\n", fd_mcs_info(SCpnt->host));
1140 print_banner(SCpnt->host);
1141 switch (SCpnt->SCp.phase) {
1142 case in_arbitration:
1143 printk("arbitration ");
1144 break;
1145 case in_selection:
1146 printk("selection ");
1147 break;
1148 case in_other:
1149 printk("other ");
1150 break;
1151 default:
1152 printk("unknown ");
1153 break;
1154 }
1155
1156 printk("(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1157 SCpnt->SCp.phase, SCpnt->device->id, *(unsigned char *) SCpnt->cmnd,
1158 scsi_sg_count(SCpnt), scsi_bufflen(SCpnt));
1159 printk("sent_command = %d, have_data_in = %d, timeout = %d\n", SCpnt->SCp.sent_command, SCpnt->SCp.have_data_in, SCpnt->timeout);
1160#if DEBUG_RACE
1161 printk("in_interrupt_flag = %d\n", in_interrupt_flag);
1162#endif
1163
1164 imr = (inb(0x0a1) << 8) + inb(0x21);
1165 outb(0x0a, 0xa0);
1166 irr = inb(0xa0) << 8;
1167 outb(0x0a, 0x20);
1168 irr += inb(0x20);
1169 outb(0x0b, 0xa0);
1170 isr = inb(0xa0) << 8;
1171 outb(0x0b, 0x20);
1172 isr += inb(0x20);
1173
1174 /* Print out interesting information */
1175 printk("IMR = 0x%04x", imr);
1176 if (imr & (1 << shpnt->irq))
1177 printk(" (masked)");
1178 printk(", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr);
1179
1180 printk("SCSI Status = 0x%02x\n", inb(SCSI_Status_port));
1181 printk("TMC Status = 0x%02x", inb(TMC_Status_port));
1182 if (inb(TMC_Status_port) & 1)
1183 printk(" (interrupt)");
1184 printk("\n");
1185 printk("Interrupt Status = 0x%02x", inb(Interrupt_Status_port));
1186 if (inb(Interrupt_Status_port) & 0x08)
1187 printk(" (enabled)");
1188 printk("\n");
1189 if (chip == tmc18c50 || chip == tmc18c30) {
1190 printk("FIFO Status = 0x%02x\n", inb(shpnt->io_port + FIFO_Status));
1191 printk("Int. Condition = 0x%02x\n", inb(shpnt->io_port + Interrupt_Cond));
1192 }
1193 printk("Configuration 1 = 0x%02x\n", inb(shpnt->io_port + Configuration1));
1194 if (chip == tmc18c50 || chip == tmc18c30)
1195 printk("Configuration 2 = 0x%02x\n", inb(shpnt->io_port + Configuration2));
1196}
1197#endif
1198
1199static int fd_mcs_abort(Scsi_Cmnd * SCpnt)
1200{
1201 struct Scsi_Host *shpnt = SCpnt->device->host;
1202
1203 unsigned long flags;
1204#if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
1205 printk("fd_mcs: abort ");
1206#endif
1207
1208 spin_lock_irqsave(shpnt->host_lock, flags);
1209 if (!in_command) {
1210#if EVERY_ACCESS || ERRORS_ONLY
1211 printk(" (not in command)\n");
1212#endif
1213 spin_unlock_irqrestore(shpnt->host_lock, flags);
1214 return FAILED;
1215 } else
1216 printk("\n");
1217
1218#if DEBUG_ABORT
1219 fd_mcs_print_info(SCpnt);
1220#endif
1221
1222 fd_mcs_make_bus_idle(shpnt);
1223
1224 current_SC->SCp.phase |= aborted;
1225
1226 current_SC->result = DID_ABORT << 16;
1227
1228 /* Aborts are not done well. . . */
1229 my_done(shpnt, DID_ABORT << 16);
1230
1231 spin_unlock_irqrestore(shpnt->host_lock, flags);
1232 return SUCCESS;
1233}
1234
1235static int fd_mcs_bus_reset(Scsi_Cmnd * SCpnt) {
1236 struct Scsi_Host *shpnt = SCpnt->device->host;
1237 unsigned long flags;
1238
1239#if DEBUG_RESET
1240 static int called_once = 0;
1241#endif
1242
1243#if ERRORS_ONLY
1244 if (SCpnt)
1245 printk("fd_mcs: SCSI Bus Reset\n");
1246#endif
1247
1248#if DEBUG_RESET
1249 if (called_once)
1250 fd_mcs_print_info(current_SC);
1251 called_once = 1;
1252#endif
1253
1254 spin_lock_irqsave(shpnt->host_lock, flags);
1255
1256 outb(1, SCSI_Cntl_port);
1257 do_pause(2);
1258 outb(0, SCSI_Cntl_port);
1259 do_pause(115);
1260 outb(0, SCSI_Mode_Cntl_port);
1261 outb(PARITY_MASK, TMC_Cntl_port);
1262
1263 spin_unlock_irqrestore(shpnt->host_lock, flags);
1264
1265 /* Unless this is the very first call (i.e., SCPnt == NULL), everything
1266 is probably hosed at this point. We will, however, try to keep
1267 things going by informing the high-level code that we need help. */
1268 return SUCCESS;
1269}
1270
1271#include <scsi/scsi_ioctl.h>
1272
1273static int fd_mcs_biosparam(struct scsi_device * disk, struct block_device *bdev,
1274 sector_t capacity, int *info_array)
1275{
1276 unsigned char *p = scsi_bios_ptable(bdev);
1277 int size = capacity;
1278
1279 /* BIOS >= 3.4 for MCA cards */
1280 /* This algorithm was provided by Future Domain (much thanks!). */
1281
1282 if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
1283 && p[4]) { /* Partition type */
1284 /* The partition table layout is as follows:
1285
1286 Start: 0x1b3h
1287 Offset: 0 = partition status
1288 1 = starting head
1289 2 = starting sector and cylinder (word, encoded)
1290 4 = partition type
1291 5 = ending head
1292 6 = ending sector and cylinder (word, encoded)
1293 8 = starting absolute sector (double word)
1294 c = number of sectors (double word)
1295 Signature: 0x1fe = 0x55aa
1296
1297 So, this algorithm assumes:
1298 1) the first partition table is in use,
1299 2) the data in the first entry is correct, and
1300 3) partitions never divide cylinders
1301
1302 Note that (1) may be FALSE for NetBSD (and other BSD flavors),
1303 as well as for Linux. Note also, that Linux doesn't pay any
1304 attention to the fields that are used by this algorithm -- it
1305 only uses the absolute sector data. Recent versions of Linux's
1306 fdisk(1) will fill this data in correctly, and forthcoming
1307 versions will check for consistency.
1308
1309 Checking for a non-zero partition type is not part of the
1310 Future Domain algorithm, but it seemed to be a reasonable thing
1311 to do, especially in the Linux and BSD worlds. */
1312
1313 info_array[0] = p[5] + 1; /* heads */
1314 info_array[1] = p[6] & 0x3f; /* sectors */
1315 } else {
1316 /* Note that this new method guarantees that there will always be
1317 less than 1024 cylinders on a platter. This is good for drives
1318 up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
1319 if ((unsigned int) size >= 0x7e0000U)
1320 {
1321 info_array[0] = 0xff; /* heads = 255 */
1322 info_array[1] = 0x3f; /* sectors = 63 */
1323 } else if ((unsigned int) size >= 0x200000U) {
1324 info_array[0] = 0x80; /* heads = 128 */
1325 info_array[1] = 0x3f; /* sectors = 63 */
1326 } else {
1327 info_array[0] = 0x40; /* heads = 64 */
1328 info_array[1] = 0x20; /* sectors = 32 */
1329 }
1330 }
1331 /* For both methods, compute the cylinders */
1332 info_array[2] = (unsigned int) size / (info_array[0] * info_array[1]);
1333 kfree(p);
1334 return 0;
1335}
1336
1337static struct scsi_host_template driver_template = {
1338 .proc_name = "fd_mcs",
1339 .proc_info = fd_mcs_proc_info,
1340 .detect = fd_mcs_detect,
1341 .release = fd_mcs_release,
1342 .info = fd_mcs_info,
1343 .queuecommand = fd_mcs_queue,
1344 .eh_abort_handler = fd_mcs_abort,
1345 .eh_bus_reset_handler = fd_mcs_bus_reset,
1346 .bios_param = fd_mcs_biosparam,
1347 .can_queue = 1,
1348 .this_id = 7,
1349 .sg_tablesize = 64,
1350 .cmd_per_lun = 1,
1351 .use_clustering = DISABLE_CLUSTERING,
1352};
1353#include "scsi_module.c"
1354
1355MODULE_LICENSE("GPL");
diff --git a/drivers/scsi/ibmmca.c b/drivers/scsi/ibmmca.c
new file mode 100644
index 00000000000..67fc8ffd52e
--- /dev/null
+++ b/drivers/scsi/ibmmca.c
@@ -0,0 +1,2380 @@
1/*
2 Low Level Linux Driver for the IBM Microchannel SCSI Subsystem for
3 Linux Kernel >= 2.4.0.
4 Copyright (c) 1995 Strom Systems, Inc. under the terms of the GNU
5 General Public License. Written by Martin Kolinek, December 1995.
6 Further development by: Chris Beauregard, Klaus Kudielka, Michael Lang
7 See the file Documentation/scsi/ibmmca.txt for a detailed description
8 of this driver, the commandline arguments and the history of its
9 development.
10 See the WWW-page: http://www.uni-mainz.de/~langm000/linux.html for latest
11 updates, info and ADF-files for adapters supported by this driver.
12
13 Alan Cox <alan@lxorguk.ukuu.org.uk>
14 Updated for Linux 2.5.45 to use the new error handler, cleaned up the
15 lock macros and did a few unavoidable locking tweaks, plus one locking
16 fix in the irq and completion path.
17
18 */
19
20#include <linux/module.h>
21#include <linux/kernel.h>
22#include <linux/types.h>
23#include <linux/ctype.h>
24#include <linux/string.h>
25#include <linux/interrupt.h>
26#include <linux/ioport.h>
27#include <linux/delay.h>
28#include <linux/blkdev.h>
29#include <linux/proc_fs.h>
30#include <linux/stat.h>
31#include <linux/mca.h>
32#include <linux/spinlock.h>
33#include <linux/init.h>
34
35#include <asm/system.h>
36#include <asm/io.h>
37
38#include "scsi.h"
39#include <scsi/scsi_host.h>
40
41/* Common forward declarations for all Linux-versions: */
42static int ibmmca_queuecommand (struct Scsi_Host *, struct scsi_cmnd *);
43static int ibmmca_abort (Scsi_Cmnd *);
44static int ibmmca_host_reset (Scsi_Cmnd *);
45static int ibmmca_biosparam (struct scsi_device *, struct block_device *, sector_t, int *);
46static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout);
47
48
49
50/* current version of this driver-source: */
51#define IBMMCA_SCSI_DRIVER_VERSION "4.0b-ac"
52
53/* driver configuration */
54#define IM_MAX_HOSTS 8 /* maximum number of host adapters */
55#define IM_RESET_DELAY 60 /* seconds allowed for a reset */
56
57/* driver debugging - #undef all for normal operation */
58/* if defined: count interrupts and ignore this special one: */
59#undef IM_DEBUG_TIMEOUT //50
60#define TIMEOUT_PUN 0
61#define TIMEOUT_LUN 0
62/* verbose interrupt: */
63#undef IM_DEBUG_INT
64/* verbose queuecommand: */
65#undef IM_DEBUG_CMD
66/* verbose queucommand for specific SCSI-device type: */
67#undef IM_DEBUG_CMD_SPEC_DEV
68/* verbose device probing */
69#undef IM_DEBUG_PROBE
70
71/* device type that shall be displayed on syslog (only during debugging): */
72#define IM_DEBUG_CMD_DEVICE TYPE_TAPE
73
74/* relative addresses of hardware registers on a subsystem */
75#define IM_CMD_REG(h) ((h)->io_port) /*Command Interface, (4 bytes long) */
76#define IM_ATTN_REG(h) ((h)->io_port+4) /*Attention (1 byte) */
77#define IM_CTR_REG(h) ((h)->io_port+5) /*Basic Control (1 byte) */
78#define IM_INTR_REG(h) ((h)->io_port+6) /*Interrupt Status (1 byte, r/o) */
79#define IM_STAT_REG(h) ((h)->io_port+7) /*Basic Status (1 byte, read only) */
80
81/* basic I/O-port of first adapter */
82#define IM_IO_PORT 0x3540
83/* maximum number of hosts that can be found */
84#define IM_N_IO_PORT 8
85
86/*requests going into the upper nibble of the Attention register */
87/*note: the lower nibble specifies the device(0-14), or subsystem(15) */
88#define IM_IMM_CMD 0x10 /*immediate command */
89#define IM_SCB 0x30 /*Subsystem Control Block command */
90#define IM_LONG_SCB 0x40 /*long Subsystem Control Block command */
91#define IM_EOI 0xe0 /*end-of-interrupt request */
92
93/*values for bits 7,1,0 of Basic Control reg. (bits 6-2 reserved) */
94#define IM_HW_RESET 0x80 /*hardware reset */
95#define IM_ENABLE_DMA 0x02 /*enable subsystem's busmaster DMA */
96#define IM_ENABLE_INTR 0x01 /*enable interrupts to the system */
97
98/*to interpret the upper nibble of Interrupt Status register */
99/*note: the lower nibble specifies the device(0-14), or subsystem(15) */
100#define IM_SCB_CMD_COMPLETED 0x10
101#define IM_SCB_CMD_COMPLETED_WITH_RETRIES 0x50
102#define IM_LOOP_SCATTER_BUFFER_FULL 0x60
103#define IM_ADAPTER_HW_FAILURE 0x70
104#define IM_IMMEDIATE_CMD_COMPLETED 0xa0
105#define IM_CMD_COMPLETED_WITH_FAILURE 0xc0
106#define IM_CMD_ERROR 0xe0
107#define IM_SOFTWARE_SEQUENCING_ERROR 0xf0
108
109/*to interpret bits 3-0 of Basic Status register (bits 7-4 reserved) */
110#define IM_CMD_REG_FULL 0x08
111#define IM_CMD_REG_EMPTY 0x04
112#define IM_INTR_REQUEST 0x02
113#define IM_BUSY 0x01
114
115/*immediate commands (word written into low 2 bytes of command reg) */
116#define IM_RESET_IMM_CMD 0x0400
117#define IM_FEATURE_CTR_IMM_CMD 0x040c
118#define IM_DMA_PACING_IMM_CMD 0x040d
119#define IM_ASSIGN_IMM_CMD 0x040e
120#define IM_ABORT_IMM_CMD 0x040f
121#define IM_FORMAT_PREP_IMM_CMD 0x0417
122
123/*SCB (Subsystem Control Block) structure */
124struct im_scb {
125 unsigned short command; /*command word (read, etc.) */
126 unsigned short enable; /*enable word, modifies cmd */
127 union {
128 unsigned long log_blk_adr; /*block address on SCSI device */
129 unsigned char scsi_cmd_length; /*6,10,12, for other scsi cmd */
130 } u1;
131 unsigned long sys_buf_adr; /*physical system memory adr */
132 unsigned long sys_buf_length; /*size of sys mem buffer */
133 unsigned long tsb_adr; /*Termination Status Block adr */
134 unsigned long scb_chain_adr; /*optional SCB chain address */
135 union {
136 struct {
137 unsigned short count; /*block count, on SCSI device */
138 unsigned short length; /*block length, on SCSI device */
139 } blk;
140 unsigned char scsi_command[12]; /*other scsi command */
141 } u2;
142};
143
144/*structure scatter-gather element (for list of system memory areas) */
145struct im_sge {
146 void *address;
147 unsigned long byte_length;
148};
149
150/*structure returned by a get_pos_info command: */
151struct im_pos_info {
152 unsigned short pos_id; /* adapter id */
153 unsigned char pos_3a; /* pos 3 (if pos 6 = 0) */
154 unsigned char pos_2; /* pos 2 */
155 unsigned char int_level; /* interrupt level IRQ 11 or 14 */
156 unsigned char pos_4a; /* pos 4 (if pos 6 = 0) */
157 unsigned short connector_size; /* MCA connector size: 16 or 32 Bit */
158 unsigned char num_luns; /* number of supported luns per device */
159 unsigned char num_puns; /* number of supported puns */
160 unsigned char pacing_factor; /* pacing factor */
161 unsigned char num_ldns; /* number of ldns available */
162 unsigned char eoi_off; /* time EOI and interrupt inactive */
163 unsigned char max_busy; /* time between reset and busy on */
164 unsigned short cache_stat; /* ldn cachestat. Bit=1 = not cached */
165 unsigned short retry_stat; /* retry status of ldns. Bit=1=disabled */
166 unsigned char pos_4b; /* pos 4 (if pos 6 = 1) */
167 unsigned char pos_3b; /* pos 3 (if pos 6 = 1) */
168 unsigned char pos_6; /* pos 6 */
169 unsigned char pos_5; /* pos 5 */
170 unsigned short max_overlap; /* maximum overlapping requests */
171 unsigned short num_bus; /* number of SCSI-busses */
172};
173
174/*values for SCB command word */
175#define IM_NO_SYNCHRONOUS 0x0040 /*flag for any command */
176#define IM_NO_DISCONNECT 0x0080 /*flag for any command */
177#define IM_READ_DATA_CMD 0x1c01
178#define IM_WRITE_DATA_CMD 0x1c02
179#define IM_READ_VERIFY_CMD 0x1c03
180#define IM_WRITE_VERIFY_CMD 0x1c04
181#define IM_REQUEST_SENSE_CMD 0x1c08
182#define IM_READ_CAPACITY_CMD 0x1c09
183#define IM_DEVICE_INQUIRY_CMD 0x1c0b
184#define IM_READ_LOGICAL_CMD 0x1c2a
185#define IM_OTHER_SCSI_CMD_CMD 0x241f
186
187/* unused, but supported, SCB commands */
188#define IM_GET_COMMAND_COMPLETE_STATUS_CMD 0x1c07 /* command status */
189#define IM_GET_POS_INFO_CMD 0x1c0a /* returns neat stuff */
190#define IM_READ_PREFETCH_CMD 0x1c31 /* caching controller only */
191#define IM_FOMAT_UNIT_CMD 0x1c16 /* format unit */
192#define IM_REASSIGN_BLOCK_CMD 0x1c18 /* in case of error */
193
194/*values to set bits in the enable word of SCB */
195#define IM_READ_CONTROL 0x8000
196#define IM_REPORT_TSB_ONLY_ON_ERROR 0x4000
197#define IM_RETRY_ENABLE 0x2000
198#define IM_POINTER_TO_LIST 0x1000
199#define IM_SUPRESS_EXCEPTION_SHORT 0x0400
200#define IM_BYPASS_BUFFER 0x0200
201#define IM_CHAIN_ON_NO_ERROR 0x0001
202
203/*TSB (Termination Status Block) structure */
204struct im_tsb {
205 unsigned short end_status;
206 unsigned short reserved1;
207 unsigned long residual_byte_count;
208 unsigned long sg_list_element_adr;
209 unsigned short status_length;
210 unsigned char dev_status;
211 unsigned char cmd_status;
212 unsigned char dev_error;
213 unsigned char cmd_error;
214 unsigned short reserved2;
215 unsigned short reserved3;
216 unsigned short low_of_last_scb_adr;
217 unsigned short high_of_last_scb_adr;
218};
219
220/*subsystem uses interrupt request level 14 */
221#define IM_IRQ 14
222/*SCSI-2 F/W may evade to interrupt 11 */
223#define IM_IRQ_FW 11
224
225/* Model 95 has an additional alphanumeric display, which can be used
226 to display SCSI-activities. 8595 models do not have any disk led, which
227 makes this feature quite useful.
228 The regular PS/2 disk led is turned on/off by bits 6,7 of system
229 control port. */
230
231/* LED display-port (actually, last LED on display) */
232#define MOD95_LED_PORT 0x108
233/* system-control-register of PS/2s with diskindicator */
234#define PS2_SYS_CTR 0x92
235/* activity displaying methods */
236#define LED_DISP 1
237#define LED_ADISP 2
238#define LED_ACTIVITY 4
239/* failed intr */
240#define CMD_FAIL 255
241
242/* The SCSI-ID(!) of the accessed SCSI-device is shown on PS/2-95 machines' LED
243 displays. ldn is no longer displayed here, because the ldn mapping is now
244 done dynamically and the ldn <-> pun,lun maps can be looked-up at boottime
245 or during uptime in /proc/scsi/ibmmca/<host_no> in case of trouble,
246 interest, debugging or just for having fun. The left number gives the
247 host-adapter number and the right shows the accessed SCSI-ID. */
248
249/* display_mode is set by the ibmmcascsi= command line arg */
250static int display_mode = 0;
251/* set default adapter timeout */
252static unsigned int adapter_timeout = 45;
253/* for probing on feature-command: */
254static unsigned int global_command_error_excuse = 0;
255/* global setting by command line for adapter_speed */
256static int global_adapter_speed = 0; /* full speed by default */
257
258/* Panel / LED on, do it right for F/W addressin, too. adisplay will
259 * just ignore ids>7, as the panel has only 7 digits available */
260#define PS2_DISK_LED_ON(ad,id) { if (display_mode & LED_DISP) { if (id>9) \
261 outw((ad+48)|((id+55)<<8), MOD95_LED_PORT ); else \
262 outw((ad+48)|((id+48)<<8), MOD95_LED_PORT ); } else \
263 if (display_mode & LED_ADISP) { if (id<7) outb((char)(id+48),MOD95_LED_PORT+1+id); \
264 outb((char)(ad+48), MOD95_LED_PORT); } \
265 if ((display_mode & LED_ACTIVITY)||(!display_mode)) \
266 outb(inb(PS2_SYS_CTR) | 0xc0, PS2_SYS_CTR); }
267
268/* Panel / LED off */
269/* bug fixed, Dec 15, 1997, where | was replaced by & here */
270#define PS2_DISK_LED_OFF() { if (display_mode & LED_DISP) \
271 outw(0x2020, MOD95_LED_PORT ); else if (display_mode & LED_ADISP) { \
272 outl(0x20202020,MOD95_LED_PORT); outl(0x20202020,MOD95_LED_PORT+4); } \
273 if ((display_mode & LED_ACTIVITY)||(!display_mode)) \
274 outb(inb(PS2_SYS_CTR) & 0x3f, PS2_SYS_CTR); }
275
276/* types of different supported hardware that goes to hostdata special */
277#define IBM_SCSI2_FW 0
278#define IBM_7568_WCACHE 1
279#define IBM_EXP_UNIT 2
280#define IBM_SCSI_WCACHE 3
281#define IBM_SCSI 4
282#define IBM_INTEGSCSI 5
283
284/* other special flags for hostdata structure */
285#define FORCED_DETECTION 100
286#define INTEGRATED_SCSI 101
287
288/* List of possible IBM-SCSI-adapters */
289static short ibmmca_id_table[] = {
290 0x8efc,
291 0x8efd,
292 0x8ef8,
293 0x8eff,
294 0x8efe,
295 /* No entry for integrated SCSI, that's part of the register */
296 0
297};
298
299static const char *ibmmca_description[] = {
300 "IBM SCSI-2 F/W Adapter", /* special = 0 */
301 "IBM 7568 Industrial Computer SCSI Adapter w/Cache", /* special = 1 */
302 "IBM Expansion Unit SCSI Controller", /* special = 2 */
303 "IBM SCSI Adapter w/Cache", /* special = 3 */
304 "IBM SCSI Adapter", /* special = 4 */
305 "IBM Integrated SCSI Controller", /* special = 5 */
306};
307
308/* Max number of logical devices (can be up from 0 to 14). 15 is the address
309of the adapter itself. */
310#define MAX_LOG_DEV 15
311
312/*local data for a logical device */
313struct logical_device {
314 struct im_scb scb; /* SCSI-subsystem-control-block structure */
315 struct im_tsb tsb; /* SCSI command complete status block structure */
316 struct im_sge sge[16]; /* scatter gather list structure */
317 unsigned char buf[256]; /* SCSI command return data buffer */
318 Scsi_Cmnd *cmd; /* SCSI-command that is currently in progress */
319 int device_type; /* type of the SCSI-device. See include/scsi/scsi.h
320 for interpretation of the possible values */
321 int block_length; /* blocksize of a particular logical SCSI-device */
322 int cache_flag; /* 1 if this is uncached, 0 if cache is present for ldn */
323 int retry_flag; /* 1 if adapter retry is disabled, 0 if enabled */
324};
325
326/* statistics of the driver during operations (for proc_info) */
327struct Driver_Statistics {
328 /* SCSI statistics on the adapter */
329 int ldn_access[MAX_LOG_DEV + 1]; /* total accesses on a ldn */
330 int ldn_read_access[MAX_LOG_DEV + 1]; /* total read-access on a ldn */
331 int ldn_write_access[MAX_LOG_DEV + 1]; /* total write-access on a ldn */
332 int ldn_inquiry_access[MAX_LOG_DEV + 1]; /* total inquiries on a ldn */
333 int ldn_modeselect_access[MAX_LOG_DEV + 1]; /* total mode selects on ldn */
334 int scbs; /* short SCBs queued */
335 int long_scbs; /* long SCBs queued */
336 int total_accesses; /* total accesses on all ldns */
337 int total_interrupts; /* total interrupts (should be
338 same as total_accesses) */
339 int total_errors; /* command completed with error */
340 /* dynamical assignment statistics */
341 int total_scsi_devices; /* number of physical pun,lun */
342 int dyn_flag; /* flag showing dynamical mode */
343 int dynamical_assignments; /* number of remappings of ldns */
344 int ldn_assignments[MAX_LOG_DEV + 1]; /* number of remappings of each
345 ldn */
346};
347
348/* data structure for each host adapter */
349struct ibmmca_hostdata {
350 /* array of logical devices: */
351 struct logical_device _ld[MAX_LOG_DEV + 1];
352 /* array to convert (pun, lun) into logical device number: */
353 unsigned char _get_ldn[16][8];
354 /*array that contains the information about the physical SCSI-devices
355 attached to this host adapter: */
356 unsigned char _get_scsi[16][8];
357 /* used only when checking logical devices: */
358 int _local_checking_phase_flag;
359 /* report received interrupt: */
360 int _got_interrupt;
361 /* report termination-status of SCSI-command: */
362 int _stat_result;
363 /* reset status (used only when doing reset): */
364 int _reset_status;
365 /* code of the last SCSI command (needed for panic info): */
366 int _last_scsi_command[MAX_LOG_DEV + 1];
367 /* identifier of the last SCSI-command type */
368 int _last_scsi_type[MAX_LOG_DEV + 1];
369 /* last blockcount */
370 int _last_scsi_blockcount[MAX_LOG_DEV + 1];
371 /* last locgical block address */
372 unsigned long _last_scsi_logical_block[MAX_LOG_DEV + 1];
373 /* Counter that points on the next reassignable ldn for dynamical
374 remapping. The default value is 7, that is the first reassignable
375 number in the list at boottime: */
376 int _next_ldn;
377 /* Statistics-structure for this IBM-SCSI-host: */
378 struct Driver_Statistics _IBM_DS;
379 /* This hostadapters pos-registers pos2 until pos6 */
380 unsigned int _pos[8];
381 /* assign a special variable, that contains dedicated info about the
382 adaptertype */
383 int _special;
384 /* connector size on the MCA bus */
385 int _connector_size;
386 /* synchronous SCSI transfer rate bitpattern */
387 int _adapter_speed;
388};
389
390/* macros to access host data structure */
391#define subsystem_pun(h) ((h)->this_id)
392#define subsystem_maxid(h) ((h)->max_id)
393#define ld(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_ld)
394#define get_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_ldn)
395#define get_scsi(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_get_scsi)
396#define local_checking_phase_flag(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_local_checking_phase_flag)
397#define got_interrupt(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_got_interrupt)
398#define stat_result(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_stat_result)
399#define reset_status(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_reset_status)
400#define last_scsi_command(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_command)
401#define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type)
402#define last_scsi_blockcount(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_blockcount)
403#define last_scsi_logical_block(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_logical_block)
404#define last_scsi_type(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_last_scsi_type)
405#define next_ldn(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_next_ldn)
406#define IBM_DS(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_IBM_DS)
407#define special(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_special)
408#define subsystem_connector_size(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_connector_size)
409#define adapter_speed(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_adapter_speed)
410#define pos2(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[2])
411#define pos3(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[3])
412#define pos4(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[4])
413#define pos5(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[5])
414#define pos6(h) (((struct ibmmca_hostdata *) (h)->hostdata)->_pos[6])
415
416/* Define a arbitrary number as subsystem-marker-type. This number is, as
417 described in the ANSI-SCSI-standard, not occupied by other device-types. */
418#define TYPE_IBM_SCSI_ADAPTER 0x2F
419
420/* Define 0xFF for no device type, because this type is not defined within
421 the ANSI-SCSI-standard, therefore, it can be used and should not cause any
422 harm. */
423#define TYPE_NO_DEVICE 0xFF
424
425/* define medium-changer. If this is not defined previously, e.g. Linux
426 2.0.x, define this type here. */
427#ifndef TYPE_MEDIUM_CHANGER
428#define TYPE_MEDIUM_CHANGER 0x08
429#endif
430
431/* define possible operations for the immediate_assign command */
432#define SET_LDN 0
433#define REMOVE_LDN 1
434
435/* ldn which is used to probe the SCSI devices */
436#define PROBE_LDN 0
437
438/* reset status flag contents */
439#define IM_RESET_NOT_IN_PROGRESS 0
440#define IM_RESET_IN_PROGRESS 1
441#define IM_RESET_FINISHED_OK 2
442#define IM_RESET_FINISHED_FAIL 3
443#define IM_RESET_NOT_IN_PROGRESS_NO_INT 4
444#define IM_RESET_FINISHED_OK_NO_INT 5
445
446/* define undefined SCSI-command */
447#define NO_SCSI 0xffff
448
449/*-----------------------------------------------------------------------*/
450
451/* if this is nonzero, ibmmcascsi option has been passed to the kernel */
452static int io_port[IM_MAX_HOSTS] = { 0, 0, 0, 0, 0, 0, 0, 0 };
453static int scsi_id[IM_MAX_HOSTS] = { 7, 7, 7, 7, 7, 7, 7, 7 };
454
455/* fill module-parameters only, when this define is present.
456 (that is kernel version 2.1.x) */
457#if defined(MODULE)
458static char *boot_options = NULL;
459module_param(boot_options, charp, 0);
460module_param_array(io_port, int, NULL, 0);
461module_param_array(scsi_id, int, NULL, 0);
462
463MODULE_LICENSE("GPL");
464#endif
465/*counter of concurrent disk read/writes, to turn on/off disk led */
466static int disk_rw_in_progress = 0;
467
468static unsigned int pos[8]; /* whole pos register-line for diagnosis */
469/* Taking into account the additions, made by ZP Gu.
470 * This selects now the preset value from the configfile and
471 * offers the 'normal' commandline option to be accepted */
472#ifdef CONFIG_IBMMCA_SCSI_ORDER_STANDARD
473static char ibm_ansi_order = 1;
474#else
475static char ibm_ansi_order = 0;
476#endif
477
478static void issue_cmd(struct Scsi_Host *, unsigned long, unsigned char);
479static void internal_done(Scsi_Cmnd * cmd);
480static void check_devices(struct Scsi_Host *, int);
481static int immediate_assign(struct Scsi_Host *, unsigned int, unsigned int, unsigned int, unsigned int);
482static int immediate_feature(struct Scsi_Host *, unsigned int, unsigned int);
483#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
484static int immediate_reset(struct Scsi_Host *, unsigned int);
485#endif
486static int device_inquiry(struct Scsi_Host *, int);
487static int read_capacity(struct Scsi_Host *, int);
488static int get_pos_info(struct Scsi_Host *);
489static char *ti_p(int);
490static char *ti_l(int);
491static char *ibmrate(unsigned int, int);
492static int probe_display(int);
493static int probe_bus_mode(struct Scsi_Host *);
494static int device_exists(struct Scsi_Host *, int, int *, int *);
495static int option_setup(char *);
496/* local functions needed for proc_info */
497static int ldn_access_load(struct Scsi_Host *, int);
498static int ldn_access_total_read_write(struct Scsi_Host *);
499
500static irqreturn_t interrupt_handler(int irq, void *dev_id)
501{
502 unsigned int intr_reg;
503 unsigned int cmd_result;
504 unsigned int ldn;
505 unsigned long flags;
506 Scsi_Cmnd *cmd;
507 int lastSCSI;
508 struct device *dev = dev_id;
509 struct Scsi_Host *shpnt = dev_get_drvdata(dev);
510
511 spin_lock_irqsave(shpnt->host_lock, flags);
512
513 if(!(inb(IM_STAT_REG(shpnt)) & IM_INTR_REQUEST)) {
514 spin_unlock_irqrestore(shpnt->host_lock, flags);
515 return IRQ_NONE;
516 }
517
518 /* the reset-function already did all the job, even ints got
519 renabled on the subsystem, so just return */
520 if ((reset_status(shpnt) == IM_RESET_NOT_IN_PROGRESS_NO_INT) || (reset_status(shpnt) == IM_RESET_FINISHED_OK_NO_INT)) {
521 reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS;
522 spin_unlock_irqrestore(shpnt->host_lock, flags);
523 return IRQ_HANDLED;
524 }
525
526 /*must wait for attention reg not busy, then send EOI to subsystem */
527 while (1) {
528 if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
529 break;
530 cpu_relax();
531 }
532
533 /*get command result and logical device */
534 intr_reg = (unsigned char) (inb(IM_INTR_REG(shpnt)));
535 cmd_result = intr_reg & 0xf0;
536 ldn = intr_reg & 0x0f;
537 /* get the last_scsi_command here */
538 lastSCSI = last_scsi_command(shpnt)[ldn];
539 outb(IM_EOI | ldn, IM_ATTN_REG(shpnt));
540
541 /*these should never happen (hw fails, or a local programming bug) */
542 if (!global_command_error_excuse) {
543 switch (cmd_result) {
544 /* Prevent from Ooopsing on error to show the real reason */
545 case IM_ADAPTER_HW_FAILURE:
546 case IM_SOFTWARE_SEQUENCING_ERROR:
547 case IM_CMD_ERROR:
548 printk(KERN_ERR "IBM MCA SCSI: Fatal Subsystem ERROR!\n");
549 printk(KERN_ERR " Last cmd=0x%x, ena=%x, len=", lastSCSI, ld(shpnt)[ldn].scb.enable);
550 if (ld(shpnt)[ldn].cmd)
551 printk("%ld/%ld,", (long) (scsi_bufflen(ld(shpnt)[ldn].cmd)), (long) (ld(shpnt)[ldn].scb.sys_buf_length));
552 else
553 printk("none,");
554 if (ld(shpnt)[ldn].cmd)
555 printk("Blocksize=%d", ld(shpnt)[ldn].scb.u2.blk.length);
556 else
557 printk("Blocksize=none");
558 printk(", host=%p, ldn=0x%x\n", shpnt, ldn);
559 if (ld(shpnt)[ldn].cmd) {
560 printk(KERN_ERR "Blockcount=%d/%d\n", last_scsi_blockcount(shpnt)[ldn], ld(shpnt)[ldn].scb.u2.blk.count);
561 printk(KERN_ERR "Logical block=%lx/%lx\n", last_scsi_logical_block(shpnt)[ldn], ld(shpnt)[ldn].scb.u1.log_blk_adr);
562 }
563 printk(KERN_ERR "Reason given: %s\n", (cmd_result == IM_ADAPTER_HW_FAILURE) ? "HARDWARE FAILURE" : (cmd_result == IM_SOFTWARE_SEQUENCING_ERROR) ? "SOFTWARE SEQUENCING ERROR" : (cmd_result == IM_CMD_ERROR) ? "COMMAND ERROR" : "UNKNOWN");
564 /* if errors appear, enter this section to give detailed info */
565 printk(KERN_ERR "IBM MCA SCSI: Subsystem Error-Status follows:\n");
566 printk(KERN_ERR " Command Type................: %x\n", last_scsi_type(shpnt)[ldn]);
567 printk(KERN_ERR " Attention Register..........: %x\n", inb(IM_ATTN_REG(shpnt)));
568 printk(KERN_ERR " Basic Control Register......: %x\n", inb(IM_CTR_REG(shpnt)));
569 printk(KERN_ERR " Interrupt Status Register...: %x\n", intr_reg);
570 printk(KERN_ERR " Basic Status Register.......: %x\n", inb(IM_STAT_REG(shpnt)));
571 if ((last_scsi_type(shpnt)[ldn] == IM_SCB) || (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB)) {
572 printk(KERN_ERR " SCB-Command.................: %x\n", ld(shpnt)[ldn].scb.command);
573 printk(KERN_ERR " SCB-Enable..................: %x\n", ld(shpnt)[ldn].scb.enable);
574 printk(KERN_ERR " SCB-logical block address...: %lx\n", ld(shpnt)[ldn].scb.u1.log_blk_adr);
575 printk(KERN_ERR " SCB-system buffer address...: %lx\n", ld(shpnt)[ldn].scb.sys_buf_adr);
576 printk(KERN_ERR " SCB-system buffer length....: %lx\n", ld(shpnt)[ldn].scb.sys_buf_length);
577 printk(KERN_ERR " SCB-tsb address.............: %lx\n", ld(shpnt)[ldn].scb.tsb_adr);
578 printk(KERN_ERR " SCB-Chain address...........: %lx\n", ld(shpnt)[ldn].scb.scb_chain_adr);
579 printk(KERN_ERR " SCB-block count.............: %x\n", ld(shpnt)[ldn].scb.u2.blk.count);
580 printk(KERN_ERR " SCB-block length............: %x\n", ld(shpnt)[ldn].scb.u2.blk.length);
581 }
582 printk(KERN_ERR " Send this report to the maintainer.\n");
583 panic("IBM MCA SCSI: Fatal error message from the subsystem (0x%X,0x%X)!\n", lastSCSI, cmd_result);
584 break;
585 }
586 } else {
587 /* The command error handling is made silent, but we tell the
588 * calling function, that there is a reported error from the
589 * adapter. */
590 switch (cmd_result) {
591 case IM_ADAPTER_HW_FAILURE:
592 case IM_SOFTWARE_SEQUENCING_ERROR:
593 case IM_CMD_ERROR:
594 global_command_error_excuse = CMD_FAIL;
595 break;
596 default:
597 global_command_error_excuse = 0;
598 break;
599 }
600 }
601 /* if no panic appeared, increase the interrupt-counter */
602 IBM_DS(shpnt).total_interrupts++;
603 /*only for local checking phase */
604 if (local_checking_phase_flag(shpnt)) {
605 stat_result(shpnt) = cmd_result;
606 got_interrupt(shpnt) = 1;
607 reset_status(shpnt) = IM_RESET_FINISHED_OK;
608 last_scsi_command(shpnt)[ldn] = NO_SCSI;
609 spin_unlock_irqrestore(shpnt->host_lock, flags);
610 return IRQ_HANDLED;
611 }
612 /* handling of commands coming from upper level of scsi driver */
613 if (last_scsi_type(shpnt)[ldn] == IM_IMM_CMD) {
614 /* verify ldn, and may handle rare reset immediate command */
615 if ((reset_status(shpnt) == IM_RESET_IN_PROGRESS) && (last_scsi_command(shpnt)[ldn] == IM_RESET_IMM_CMD)) {
616 if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) {
617 disk_rw_in_progress = 0;
618 PS2_DISK_LED_OFF();
619 reset_status(shpnt) = IM_RESET_FINISHED_FAIL;
620 } else {
621 /*reset disk led counter, turn off disk led */
622 disk_rw_in_progress = 0;
623 PS2_DISK_LED_OFF();
624 reset_status(shpnt) = IM_RESET_FINISHED_OK;
625 }
626 stat_result(shpnt) = cmd_result;
627 last_scsi_command(shpnt)[ldn] = NO_SCSI;
628 last_scsi_type(shpnt)[ldn] = 0;
629 spin_unlock_irqrestore(shpnt->host_lock, flags);
630 return IRQ_HANDLED;
631 } else if (last_scsi_command(shpnt)[ldn] == IM_ABORT_IMM_CMD) {
632 /* react on SCSI abort command */
633#ifdef IM_DEBUG_PROBE
634 printk("IBM MCA SCSI: Interrupt from SCSI-abort.\n");
635#endif
636 disk_rw_in_progress = 0;
637 PS2_DISK_LED_OFF();
638 cmd = ld(shpnt)[ldn].cmd;
639 ld(shpnt)[ldn].cmd = NULL;
640 if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE)
641 cmd->result = DID_NO_CONNECT << 16;
642 else
643 cmd->result = DID_ABORT << 16;
644 stat_result(shpnt) = cmd_result;
645 last_scsi_command(shpnt)[ldn] = NO_SCSI;
646 last_scsi_type(shpnt)[ldn] = 0;
647 if (cmd->scsi_done)
648 (cmd->scsi_done) (cmd); /* should be the internal_done */
649 spin_unlock_irqrestore(shpnt->host_lock, flags);
650 return IRQ_HANDLED;
651 } else {
652 disk_rw_in_progress = 0;
653 PS2_DISK_LED_OFF();
654 reset_status(shpnt) = IM_RESET_FINISHED_OK;
655 stat_result(shpnt) = cmd_result;
656 last_scsi_command(shpnt)[ldn] = NO_SCSI;
657 spin_unlock_irqrestore(shpnt->host_lock, flags);
658 return IRQ_HANDLED;
659 }
660 }
661 last_scsi_command(shpnt)[ldn] = NO_SCSI;
662 last_scsi_type(shpnt)[ldn] = 0;
663 cmd = ld(shpnt)[ldn].cmd;
664 ld(shpnt)[ldn].cmd = NULL;
665#ifdef IM_DEBUG_TIMEOUT
666 if (cmd) {
667 if ((cmd->target == TIMEOUT_PUN) && (cmd->device->lun == TIMEOUT_LUN)) {
668 spin_unlock_irqsave(shpnt->host_lock, flags);
669 printk("IBM MCA SCSI: Ignoring interrupt from pun=%x, lun=%x.\n", cmd->target, cmd->device->lun);
670 return IRQ_HANDLED;
671 }
672 }
673#endif
674 /*if no command structure, just return, else clear cmd */
675 if (!cmd)
676 {
677 spin_unlock_irqrestore(shpnt->host_lock, flags);
678 return IRQ_HANDLED;
679 }
680
681#ifdef IM_DEBUG_INT
682 printk("cmd=%02x ireg=%02x ds=%02x cs=%02x de=%02x ce=%02x\n", cmd->cmnd[0], intr_reg, ld(shpnt)[ldn].tsb.dev_status, ld(shpnt)[ldn].tsb.cmd_status, ld(shpnt)[ldn].tsb.dev_error, ld(shpnt)[ldn].tsb.cmd_error);
683#endif
684 /*if this is end of media read/write, may turn off PS/2 disk led */
685 if ((ld(shpnt)[ldn].device_type != TYPE_NO_LUN) && (ld(shpnt)[ldn].device_type != TYPE_NO_DEVICE)) {
686 /* only access this, if there was a valid device addressed */
687 if (--disk_rw_in_progress == 0)
688 PS2_DISK_LED_OFF();
689 }
690
691 /* IBM describes the status-mask to be 0x1e, but this is not conform
692 * with SCSI-definition, I suppose, the reason for it is that IBM
693 * adapters do not support CMD_TERMINATED, TASK_SET_FULL and
694 * ACA_ACTIVE as returning statusbyte information. (ML) */
695 if (cmd_result == IM_CMD_COMPLETED_WITH_FAILURE) {
696 cmd->result = (unsigned char) (ld(shpnt)[ldn].tsb.dev_status & 0x1e);
697 IBM_DS(shpnt).total_errors++;
698 } else
699 cmd->result = 0;
700 /* write device status into cmd->result, and call done function */
701 if (lastSCSI == NO_SCSI) { /* unexpected interrupt :-( */
702 cmd->result |= DID_BAD_INTR << 16;
703 printk("IBM MCA SCSI: WARNING - Interrupt from non-pending SCSI-command!\n");
704 } else /* things went right :-) */
705 cmd->result |= DID_OK << 16;
706 if (cmd->scsi_done)
707 (cmd->scsi_done) (cmd);
708 spin_unlock_irqrestore(shpnt->host_lock, flags);
709 return IRQ_HANDLED;
710}
711
712static void issue_cmd(struct Scsi_Host *shpnt, unsigned long cmd_reg,
713 unsigned char attn_reg)
714{
715 unsigned long flags;
716 /* must wait for attention reg not busy */
717 while (1) {
718 spin_lock_irqsave(shpnt->host_lock, flags);
719 if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
720 break;
721 spin_unlock_irqrestore(shpnt->host_lock, flags);
722 }
723 /* write registers and enable system interrupts */
724 outl(cmd_reg, IM_CMD_REG(shpnt));
725 outb(attn_reg, IM_ATTN_REG(shpnt));
726 spin_unlock_irqrestore(shpnt->host_lock, flags);
727}
728
729static void internal_done(Scsi_Cmnd * cmd)
730{
731 cmd->SCp.Status++;
732 return;
733}
734
735/* SCSI-SCB-command for device_inquiry */
736static int device_inquiry(struct Scsi_Host *shpnt, int ldn)
737{
738 int retr;
739 struct im_scb *scb;
740 struct im_tsb *tsb;
741 unsigned char *buf;
742
743 scb = &(ld(shpnt)[ldn].scb);
744 tsb = &(ld(shpnt)[ldn].tsb);
745 buf = (unsigned char *) (&(ld(shpnt)[ldn].buf));
746 ld(shpnt)[ldn].tsb.dev_status = 0; /* prepare statusblock */
747 for (retr = 0; retr < 3; retr++) {
748 /* fill scb with inquiry command */
749 scb->command = IM_DEVICE_INQUIRY_CMD | IM_NO_DISCONNECT;
750 scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_RETRY_ENABLE | IM_BYPASS_BUFFER;
751 last_scsi_command(shpnt)[ldn] = IM_DEVICE_INQUIRY_CMD;
752 last_scsi_type(shpnt)[ldn] = IM_SCB;
753 scb->sys_buf_adr = isa_virt_to_bus(buf);
754 scb->sys_buf_length = 255; /* maximum bufferlength gives max info */
755 scb->tsb_adr = isa_virt_to_bus(tsb);
756 /* issue scb to passed ldn, and busy wait for interrupt */
757 got_interrupt(shpnt) = 0;
758 issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn);
759 while (!got_interrupt(shpnt))
760 barrier();
761
762 /*if command successful, break */
763 if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES))
764 return 1;
765 }
766 /*if all three retries failed, return "no device at this ldn" */
767 if (retr >= 3)
768 return 0;
769 else
770 return 1;
771}
772
773static int read_capacity(struct Scsi_Host *shpnt, int ldn)
774{
775 int retr;
776 struct im_scb *scb;
777 struct im_tsb *tsb;
778 unsigned char *buf;
779
780 scb = &(ld(shpnt)[ldn].scb);
781 tsb = &(ld(shpnt)[ldn].tsb);
782 buf = (unsigned char *) (&(ld(shpnt)[ldn].buf));
783 ld(shpnt)[ldn].tsb.dev_status = 0;
784 for (retr = 0; retr < 3; retr++) {
785 /*fill scb with read capacity command */
786 scb->command = IM_READ_CAPACITY_CMD;
787 scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_READ_CONTROL | IM_RETRY_ENABLE | IM_BYPASS_BUFFER;
788 last_scsi_command(shpnt)[ldn] = IM_READ_CAPACITY_CMD;
789 last_scsi_type(shpnt)[ldn] = IM_SCB;
790 scb->sys_buf_adr = isa_virt_to_bus(buf);
791 scb->sys_buf_length = 8;
792 scb->tsb_adr = isa_virt_to_bus(tsb);
793 /*issue scb to passed ldn, and busy wait for interrupt */
794 got_interrupt(shpnt) = 0;
795 issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn);
796 while (!got_interrupt(shpnt))
797 barrier();
798
799 /*if got capacity, get block length and return one device found */
800 if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES))
801 return 1;
802 }
803 /*if all three retries failed, return "no device at this ldn" */
804 if (retr >= 3)
805 return 0;
806 else
807 return 1;
808}
809
810static int get_pos_info(struct Scsi_Host *shpnt)
811{
812 int retr;
813 struct im_scb *scb;
814 struct im_tsb *tsb;
815 unsigned char *buf;
816
817 scb = &(ld(shpnt)[MAX_LOG_DEV].scb);
818 tsb = &(ld(shpnt)[MAX_LOG_DEV].tsb);
819 buf = (unsigned char *) (&(ld(shpnt)[MAX_LOG_DEV].buf));
820 ld(shpnt)[MAX_LOG_DEV].tsb.dev_status = 0;
821 for (retr = 0; retr < 3; retr++) {
822 /*fill scb with get_pos_info command */
823 scb->command = IM_GET_POS_INFO_CMD;
824 scb->enable = IM_READ_CONTROL | IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE | IM_BYPASS_BUFFER;
825 last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_GET_POS_INFO_CMD;
826 last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_SCB;
827 scb->sys_buf_adr = isa_virt_to_bus(buf);
828 if (special(shpnt) == IBM_SCSI2_FW)
829 scb->sys_buf_length = 256; /* get all info from F/W adapter */
830 else
831 scb->sys_buf_length = 18; /* get exactly 18 bytes for other SCSI */
832 scb->tsb_adr = isa_virt_to_bus(tsb);
833 /*issue scb to ldn=15, and busy wait for interrupt */
834 got_interrupt(shpnt) = 0;
835 issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | MAX_LOG_DEV);
836
837 /* FIXME: timeout */
838 while (!got_interrupt(shpnt))
839 barrier();
840
841 /*if got POS-stuff, get block length and return one device found */
842 if ((stat_result(shpnt) == IM_SCB_CMD_COMPLETED) || (stat_result(shpnt) == IM_SCB_CMD_COMPLETED_WITH_RETRIES))
843 return 1;
844 }
845 /* if all three retries failed, return "no device at this ldn" */
846 if (retr >= 3)
847 return 0;
848 else
849 return 1;
850}
851
852/* SCSI-immediate-command for assign. This functions maps/unmaps specific
853 ldn-numbers on SCSI (PUN,LUN). It is needed for presetting of the
854 subsystem and for dynamical remapping od ldns. */
855static int immediate_assign(struct Scsi_Host *shpnt, unsigned int pun,
856 unsigned int lun, unsigned int ldn,
857 unsigned int operation)
858{
859 int retr;
860 unsigned long imm_cmd;
861
862 for (retr = 0; retr < 3; retr++) {
863 /* select mutation level of the SCSI-adapter */
864 switch (special(shpnt)) {
865 case IBM_SCSI2_FW:
866 imm_cmd = (unsigned long) (IM_ASSIGN_IMM_CMD);
867 imm_cmd |= (unsigned long) ((lun & 7) << 24);
868 imm_cmd |= (unsigned long) ((operation & 1) << 23);
869 imm_cmd |= (unsigned long) ((pun & 7) << 20) | ((pun & 8) << 24);
870 imm_cmd |= (unsigned long) ((ldn & 15) << 16);
871 break;
872 default:
873 imm_cmd = inl(IM_CMD_REG(shpnt));
874 imm_cmd &= (unsigned long) (0xF8000000); /* keep reserved bits */
875 imm_cmd |= (unsigned long) (IM_ASSIGN_IMM_CMD);
876 imm_cmd |= (unsigned long) ((lun & 7) << 24);
877 imm_cmd |= (unsigned long) ((operation & 1) << 23);
878 imm_cmd |= (unsigned long) ((pun & 7) << 20);
879 imm_cmd |= (unsigned long) ((ldn & 15) << 16);
880 break;
881 }
882 last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_ASSIGN_IMM_CMD;
883 last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD;
884 got_interrupt(shpnt) = 0;
885 issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV);
886 while (!got_interrupt(shpnt))
887 barrier();
888
889 /*if command successful, break */
890 if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED)
891 return 1;
892 }
893 if (retr >= 3)
894 return 0;
895 else
896 return 1;
897}
898
899static int immediate_feature(struct Scsi_Host *shpnt, unsigned int speed, unsigned int timeout)
900{
901 int retr;
902 unsigned long imm_cmd;
903
904 for (retr = 0; retr < 3; retr++) {
905 /* select mutation level of the SCSI-adapter */
906 imm_cmd = IM_FEATURE_CTR_IMM_CMD;
907 imm_cmd |= (unsigned long) ((speed & 0x7) << 29);
908 imm_cmd |= (unsigned long) ((timeout & 0x1fff) << 16);
909 last_scsi_command(shpnt)[MAX_LOG_DEV] = IM_FEATURE_CTR_IMM_CMD;
910 last_scsi_type(shpnt)[MAX_LOG_DEV] = IM_IMM_CMD;
911 got_interrupt(shpnt) = 0;
912 /* we need to run into command errors in order to probe for the
913 * right speed! */
914 global_command_error_excuse = 1;
915 issue_cmd(shpnt, (unsigned long) (imm_cmd), IM_IMM_CMD | MAX_LOG_DEV);
916
917 /* FIXME: timeout */
918 while (!got_interrupt(shpnt))
919 barrier();
920 if (global_command_error_excuse == CMD_FAIL) {
921 global_command_error_excuse = 0;
922 return 2;
923 } else
924 global_command_error_excuse = 0;
925 /*if command successful, break */
926 if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED)
927 return 1;
928 }
929 if (retr >= 3)
930 return 0;
931 else
932 return 1;
933}
934
935#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
936static int immediate_reset(struct Scsi_Host *shpnt, unsigned int ldn)
937{
938 int retries;
939 int ticks;
940 unsigned long imm_command;
941
942 for (retries = 0; retries < 3; retries++) {
943 imm_command = inl(IM_CMD_REG(shpnt));
944 imm_command &= (unsigned long) (0xFFFF0000); /* keep reserved bits */
945 imm_command |= (unsigned long) (IM_RESET_IMM_CMD);
946 last_scsi_command(shpnt)[ldn] = IM_RESET_IMM_CMD;
947 last_scsi_type(shpnt)[ldn] = IM_IMM_CMD;
948 got_interrupt(shpnt) = 0;
949 reset_status(shpnt) = IM_RESET_IN_PROGRESS;
950 issue_cmd(shpnt, (unsigned long) (imm_command), IM_IMM_CMD | ldn);
951 ticks = IM_RESET_DELAY * HZ;
952 while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks) {
953 udelay((1 + 999 / HZ) * 1000);
954 barrier();
955 }
956 /* if reset did not complete, just complain */
957 if (!ticks) {
958 printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY);
959 reset_status(shpnt) = IM_RESET_FINISHED_OK;
960 /* did not work, finish */
961 return 1;
962 }
963 /*if command successful, break */
964 if (stat_result(shpnt) == IM_IMMEDIATE_CMD_COMPLETED)
965 return 1;
966 }
967 if (retries >= 3)
968 return 0;
969 else
970 return 1;
971}
972#endif
973
974/* type-interpreter for physical device numbers */
975static char *ti_p(int dev)
976{
977 switch (dev) {
978 case TYPE_IBM_SCSI_ADAPTER:
979 return ("A");
980 case TYPE_DISK:
981 return ("D");
982 case TYPE_TAPE:
983 return ("T");
984 case TYPE_PROCESSOR:
985 return ("P");
986 case TYPE_WORM:
987 return ("W");
988 case TYPE_ROM:
989 return ("R");
990 case TYPE_SCANNER:
991 return ("S");
992 case TYPE_MOD:
993 return ("M");
994 case TYPE_MEDIUM_CHANGER:
995 return ("C");
996 case TYPE_NO_LUN:
997 return ("+"); /* show NO_LUN */
998 }
999 return ("-"); /* TYPE_NO_DEVICE and others */
1000}
1001
1002/* interpreter for logical device numbers (ldn) */
1003static char *ti_l(int val)
1004{
1005 const char hex[16] = "0123456789abcdef";
1006 static char answer[2];
1007
1008 answer[1] = (char) (0x0);
1009 if (val <= MAX_LOG_DEV)
1010 answer[0] = hex[val];
1011 else
1012 answer[0] = '-';
1013 return (char *) &answer;
1014}
1015
1016/* transfers bitpattern of the feature command to values in MHz */
1017static char *ibmrate(unsigned int speed, int i)
1018{
1019 switch (speed) {
1020 case 0:
1021 return i ? "5.00" : "10.00";
1022 case 1:
1023 return i ? "4.00" : "8.00";
1024 case 2:
1025 return i ? "3.33" : "6.66";
1026 case 3:
1027 return i ? "2.86" : "5.00";
1028 case 4:
1029 return i ? "2.50" : "4.00";
1030 case 5:
1031 return i ? "2.22" : "3.10";
1032 case 6:
1033 return i ? "2.00" : "2.50";
1034 case 7:
1035 return i ? "1.82" : "2.00";
1036 }
1037 return "---";
1038}
1039
1040static int probe_display(int what)
1041{
1042 static int rotator = 0;
1043 const char rotor[] = "|/-\\";
1044
1045 if (!(display_mode & LED_DISP))
1046 return 0;
1047 if (!what) {
1048 outl(0x20202020, MOD95_LED_PORT);
1049 outl(0x20202020, MOD95_LED_PORT + 4);
1050 } else {
1051 outb('S', MOD95_LED_PORT + 7);
1052 outb('C', MOD95_LED_PORT + 6);
1053 outb('S', MOD95_LED_PORT + 5);
1054 outb('I', MOD95_LED_PORT + 4);
1055 outb('i', MOD95_LED_PORT + 3);
1056 outb('n', MOD95_LED_PORT + 2);
1057 outb('i', MOD95_LED_PORT + 1);
1058 outb((char) (rotor[rotator]), MOD95_LED_PORT);
1059 rotator++;
1060 if (rotator > 3)
1061 rotator = 0;
1062 }
1063 return 0;
1064}
1065
1066static int probe_bus_mode(struct Scsi_Host *shpnt)
1067{
1068 struct im_pos_info *info;
1069 int num_bus = 0;
1070 int ldn;
1071
1072 info = (struct im_pos_info *) (&(ld(shpnt)[MAX_LOG_DEV].buf));
1073 if (get_pos_info(shpnt)) {
1074 if (info->connector_size & 0xf000)
1075 subsystem_connector_size(shpnt) = 16;
1076 else
1077 subsystem_connector_size(shpnt) = 32;
1078 num_bus |= (info->pos_4b & 8) >> 3;
1079 for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
1080 if ((special(shpnt) == IBM_SCSI_WCACHE) || (special(shpnt) == IBM_7568_WCACHE)) {
1081 if (!((info->cache_stat >> ldn) & 1))
1082 ld(shpnt)[ldn].cache_flag = 0;
1083 }
1084 if (!((info->retry_stat >> ldn) & 1))
1085 ld(shpnt)[ldn].retry_flag = 0;
1086 }
1087#ifdef IM_DEBUG_PROBE
1088 printk("IBM MCA SCSI: SCSI-Cache bits: ");
1089 for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
1090 printk("%d", ld(shpnt)[ldn].cache_flag);
1091 }
1092 printk("\nIBM MCA SCSI: SCSI-Retry bits: ");
1093 for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
1094 printk("%d", ld(shpnt)[ldn].retry_flag);
1095 }
1096 printk("\n");
1097#endif
1098 }
1099 return num_bus;
1100}
1101
1102/* probing scsi devices */
1103static void check_devices(struct Scsi_Host *shpnt, int adaptertype)
1104{
1105 int id, lun, ldn, ticks;
1106 int count_devices; /* local counter for connected device */
1107 int max_pun;
1108 int num_bus;
1109 int speedrun; /* local adapter_speed check variable */
1110
1111 /* assign default values to certain variables */
1112 ticks = 0;
1113 count_devices = 0;
1114 IBM_DS(shpnt).dyn_flag = 0; /* normally no need for dynamical ldn management */
1115 IBM_DS(shpnt).total_errors = 0; /* set errorcounter to 0 */
1116 next_ldn(shpnt) = 7; /* next ldn to be assigned is 7, because 0-6 is 'hardwired' */
1117
1118 /* initialize the very important driver-informational arrays/structs */
1119 memset(ld(shpnt), 0, sizeof(ld(shpnt)));
1120 for (ldn = 0; ldn <= MAX_LOG_DEV; ldn++) {
1121 last_scsi_command(shpnt)[ldn] = NO_SCSI; /* emptify last SCSI-command storage */
1122 last_scsi_type(shpnt)[ldn] = 0;
1123 ld(shpnt)[ldn].cache_flag = 1;
1124 ld(shpnt)[ldn].retry_flag = 1;
1125 }
1126 memset(get_ldn(shpnt), TYPE_NO_DEVICE, sizeof(get_ldn(shpnt))); /* this is essential ! */
1127 memset(get_scsi(shpnt), TYPE_NO_DEVICE, sizeof(get_scsi(shpnt))); /* this is essential ! */
1128 for (lun = 0; lun < 8; lun++) {
1129 /* mark the adapter at its pun on all luns */
1130 get_scsi(shpnt)[subsystem_pun(shpnt)][lun] = TYPE_IBM_SCSI_ADAPTER;
1131 get_ldn(shpnt)[subsystem_pun(shpnt)][lun] = MAX_LOG_DEV; /* make sure, the subsystem
1132 ldn is active for all
1133 luns. */
1134 }
1135 probe_display(0); /* Supercool display usage during SCSI-probing. */
1136 /* This makes sense, when booting without any */
1137 /* monitor connected on model XX95. */
1138
1139 /* STEP 1: */
1140 adapter_speed(shpnt) = global_adapter_speed;
1141 speedrun = adapter_speed(shpnt);
1142 while (immediate_feature(shpnt, speedrun, adapter_timeout) == 2) {
1143 probe_display(1);
1144 if (speedrun == 7)
1145 panic("IBM MCA SCSI: Cannot set Synchronous-Transfer-Rate!\n");
1146 speedrun++;
1147 if (speedrun > 7)
1148 speedrun = 7;
1149 }
1150 adapter_speed(shpnt) = speedrun;
1151 /* Get detailed information about the current adapter, necessary for
1152 * device operations: */
1153 num_bus = probe_bus_mode(shpnt);
1154
1155 /* num_bus contains only valid data for the F/W adapter! */
1156 if (adaptertype == IBM_SCSI2_FW) { /* F/W SCSI adapter: */
1157 /* F/W adapter PUN-space extension evaluation: */
1158 if (num_bus) {
1159 printk(KERN_INFO "IBM MCA SCSI: Separate bus mode (wide-addressing enabled)\n");
1160 subsystem_maxid(shpnt) = 16;
1161 } else {
1162 printk(KERN_INFO "IBM MCA SCSI: Combined bus mode (wide-addressing disabled)\n");
1163 subsystem_maxid(shpnt) = 8;
1164 }
1165 printk(KERN_INFO "IBM MCA SCSI: Sync.-Rate (F/W: 20, Int.: 10, Ext.: %s) MBytes/s\n", ibmrate(speedrun, adaptertype));
1166 } else /* all other IBM SCSI adapters: */
1167 printk(KERN_INFO "IBM MCA SCSI: Synchronous-SCSI-Transfer-Rate: %s MBytes/s\n", ibmrate(speedrun, adaptertype));
1168
1169 /* assign correct PUN device space */
1170 max_pun = subsystem_maxid(shpnt);
1171
1172#ifdef IM_DEBUG_PROBE
1173 printk("IBM MCA SCSI: Current SCSI-host index: %d\n", shpnt);
1174 printk("IBM MCA SCSI: Removing default logical SCSI-device mapping.");
1175#else
1176 printk(KERN_INFO "IBM MCA SCSI: Dev. Order: %s, Mapping (takes <2min): ", (ibm_ansi_order) ? "ANSI" : "New");
1177#endif
1178 for (ldn = 0; ldn < MAX_LOG_DEV; ldn++) {
1179 probe_display(1);
1180#ifdef IM_DEBUG_PROBE
1181 printk(".");
1182#endif
1183 immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN); /* remove ldn (wherever) */
1184 }
1185 lun = 0; /* default lun is 0 */
1186#ifndef IM_DEBUG_PROBE
1187 printk("cleared,");
1188#endif
1189 /* STEP 2: */
1190#ifdef IM_DEBUG_PROBE
1191 printk("\nIBM MCA SCSI: Scanning SCSI-devices.");
1192#endif
1193 for (id = 0; id < max_pun; id++)
1194#ifdef CONFIG_SCSI_MULTI_LUN
1195 for (lun = 0; lun < 8; lun++)
1196#endif
1197 {
1198 probe_display(1);
1199#ifdef IM_DEBUG_PROBE
1200 printk(".");
1201#endif
1202 if (id != subsystem_pun(shpnt)) {
1203 /* if pun is not the adapter: */
1204 /* set ldn=0 to pun,lun */
1205 immediate_assign(shpnt, id, lun, PROBE_LDN, SET_LDN);
1206 if (device_inquiry(shpnt, PROBE_LDN)) { /* probe device */
1207 get_scsi(shpnt)[id][lun] = (unsigned char) (ld(shpnt)[PROBE_LDN].buf[0]);
1208 /* entry, even for NO_LUN */
1209 if (ld(shpnt)[PROBE_LDN].buf[0] != TYPE_NO_LUN)
1210 count_devices++; /* a existing device is found */
1211 }
1212 /* remove ldn */
1213 immediate_assign(shpnt, id, lun, PROBE_LDN, REMOVE_LDN);
1214 }
1215 }
1216#ifndef IM_DEBUG_PROBE
1217 printk("scanned,");
1218#endif
1219 /* STEP 3: */
1220#ifdef IM_DEBUG_PROBE
1221 printk("\nIBM MCA SCSI: Mapping SCSI-devices.");
1222#endif
1223 ldn = 0;
1224 lun = 0;
1225#ifdef CONFIG_SCSI_MULTI_LUN
1226 for (lun = 0; lun < 8 && ldn < MAX_LOG_DEV; lun++)
1227#endif
1228 for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) {
1229 probe_display(1);
1230#ifdef IM_DEBUG_PROBE
1231 printk(".");
1232#endif
1233 if (id != subsystem_pun(shpnt)) {
1234 if (get_scsi(shpnt)[id][lun] != TYPE_NO_LUN && get_scsi(shpnt)[id][lun] != TYPE_NO_DEVICE) {
1235 /* Only map if accepted type. Always enter for
1236 lun == 0 to get no gaps into ldn-mapping for ldn<7. */
1237 immediate_assign(shpnt, id, lun, ldn, SET_LDN);
1238 get_ldn(shpnt)[id][lun] = ldn; /* map ldn */
1239 if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) {
1240#ifdef CONFIG_IBMMCA_SCSI_DEV_RESET
1241 printk("resetting device at ldn=%x ... ", ldn);
1242 immediate_reset(shpnt, ldn);
1243#endif
1244 ldn++;
1245 } else {
1246 /* device vanished, probably because we don't know how to
1247 * handle it or because it has problems */
1248 if (lun > 0) {
1249 /* remove mapping */
1250 get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE;
1251 immediate_assign(shpnt, 0, 0, ldn, REMOVE_LDN);
1252 } else
1253 ldn++;
1254 }
1255 } else if (lun == 0) {
1256 /* map lun == 0, even if no device exists */
1257 immediate_assign(shpnt, id, lun, ldn, SET_LDN);
1258 get_ldn(shpnt)[id][lun] = ldn; /* map ldn */
1259 ldn++;
1260 }
1261 }
1262 }
1263 /* STEP 4: */
1264
1265 /* map remaining ldns to non-existing devices */
1266 for (lun = 1; lun < 8 && ldn < MAX_LOG_DEV; lun++)
1267 for (id = 0; id < max_pun && ldn < MAX_LOG_DEV; id++) {
1268 if (get_scsi(shpnt)[id][lun] == TYPE_NO_LUN || get_scsi(shpnt)[id][lun] == TYPE_NO_DEVICE) {
1269 probe_display(1);
1270 /* Map remaining ldns only to NON-existing pun,lun
1271 combinations to make sure an inquiry will fail.
1272 For MULTI_LUN, it is needed to avoid adapter autonome
1273 SCSI-remapping. */
1274 immediate_assign(shpnt, id, lun, ldn, SET_LDN);
1275 get_ldn(shpnt)[id][lun] = ldn;
1276 ldn++;
1277 }
1278 }
1279#ifndef IM_DEBUG_PROBE
1280 printk("mapped.");
1281#endif
1282 printk("\n");
1283#ifdef IM_DEBUG_PROBE
1284 if (ibm_ansi_order)
1285 printk("IBM MCA SCSI: Device order: IBM/ANSI (pun=7 is first).\n");
1286 else
1287 printk("IBM MCA SCSI: Device order: New Industry Standard (pun=0 is first).\n");
1288#endif
1289
1290#ifdef IM_DEBUG_PROBE
1291 /* Show the physical and logical mapping during boot. */
1292 printk("IBM MCA SCSI: Determined SCSI-device-mapping:\n");
1293 printk(" Physical SCSI-Device Map Logical SCSI-Device Map\n");
1294 printk("ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n");
1295 for (id = 0; id < max_pun; id++) {
1296 printk("%2d ", id);
1297 for (lun = 0; lun < 8; lun++)
1298 printk("%2s ", ti_p(get_scsi(shpnt)[id][lun]));
1299 printk(" %2d ", id);
1300 for (lun = 0; lun < 8; lun++)
1301 printk("%2s ", ti_l(get_ldn(shpnt)[id][lun]));
1302 printk("\n");
1303 }
1304#endif
1305
1306 /* assign total number of found SCSI-devices to the statistics struct */
1307 IBM_DS(shpnt).total_scsi_devices = count_devices;
1308
1309 /* decide for output in /proc-filesystem, if the configuration of
1310 SCSI-devices makes dynamical reassignment of devices necessary */
1311 if (count_devices >= MAX_LOG_DEV)
1312 IBM_DS(shpnt).dyn_flag = 1; /* dynamical assignment is necessary */
1313 else
1314 IBM_DS(shpnt).dyn_flag = 0; /* dynamical assignment is not necessary */
1315
1316 /* If no SCSI-devices are assigned, return 1 in order to cause message. */
1317 if (ldn == 0)
1318 printk("IBM MCA SCSI: Warning: No SCSI-devices found/assigned!\n");
1319
1320 /* reset the counters for statistics on the current adapter */
1321 IBM_DS(shpnt).scbs = 0;
1322 IBM_DS(shpnt).long_scbs = 0;
1323 IBM_DS(shpnt).total_accesses = 0;
1324 IBM_DS(shpnt).total_interrupts = 0;
1325 IBM_DS(shpnt).dynamical_assignments = 0;
1326 memset(IBM_DS(shpnt).ldn_access, 0x0, sizeof(IBM_DS(shpnt).ldn_access));
1327 memset(IBM_DS(shpnt).ldn_read_access, 0x0, sizeof(IBM_DS(shpnt).ldn_read_access));
1328 memset(IBM_DS(shpnt).ldn_write_access, 0x0, sizeof(IBM_DS(shpnt).ldn_write_access));
1329 memset(IBM_DS(shpnt).ldn_inquiry_access, 0x0, sizeof(IBM_DS(shpnt).ldn_inquiry_access));
1330 memset(IBM_DS(shpnt).ldn_modeselect_access, 0x0, sizeof(IBM_DS(shpnt).ldn_modeselect_access));
1331 memset(IBM_DS(shpnt).ldn_assignments, 0x0, sizeof(IBM_DS(shpnt).ldn_assignments));
1332 probe_display(0);
1333 return;
1334}
1335
1336static int device_exists(struct Scsi_Host *shpnt, int ldn, int *block_length, int *device_type)
1337{
1338 unsigned char *buf;
1339 /* if no valid device found, return immediately with 0 */
1340 if (!(device_inquiry(shpnt, ldn)))
1341 return 0;
1342 buf = (unsigned char *) (&(ld(shpnt)[ldn].buf));
1343 if (*buf == TYPE_ROM) {
1344 *device_type = TYPE_ROM;
1345 *block_length = 2048; /* (standard blocksize for yellow-/red-book) */
1346 return 1;
1347 }
1348 if (*buf == TYPE_WORM) {
1349 *device_type = TYPE_WORM;
1350 *block_length = 2048;
1351 return 1;
1352 }
1353 if (*buf == TYPE_DISK) {
1354 *device_type = TYPE_DISK;
1355 if (read_capacity(shpnt, ldn)) {
1356 *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24);
1357 return 1;
1358 } else
1359 return 0;
1360 }
1361 if (*buf == TYPE_MOD) {
1362 *device_type = TYPE_MOD;
1363 if (read_capacity(shpnt, ldn)) {
1364 *block_length = *(buf + 7) + (*(buf + 6) << 8) + (*(buf + 5) << 16) + (*(buf + 4) << 24);
1365 return 1;
1366 } else
1367 return 0;
1368 }
1369 if (*buf == TYPE_TAPE) {
1370 *device_type = TYPE_TAPE;
1371 *block_length = 0; /* not in use (setting by mt and mtst in op.) */
1372 return 1;
1373 }
1374 if (*buf == TYPE_PROCESSOR) {
1375 *device_type = TYPE_PROCESSOR;
1376 *block_length = 0; /* they set their stuff on drivers */
1377 return 1;
1378 }
1379 if (*buf == TYPE_SCANNER) {
1380 *device_type = TYPE_SCANNER;
1381 *block_length = 0; /* they set their stuff on drivers */
1382 return 1;
1383 }
1384 if (*buf == TYPE_MEDIUM_CHANGER) {
1385 *device_type = TYPE_MEDIUM_CHANGER;
1386 *block_length = 0; /* One never knows, what to expect on a medium
1387 changer device. */
1388 return 1;
1389 }
1390 return 0;
1391}
1392
1393static void internal_ibmmca_scsi_setup(char *str, int *ints)
1394{
1395 int i, j, io_base, id_base;
1396 char *token;
1397
1398 io_base = 0;
1399 id_base = 0;
1400 if (str) {
1401 j = 0;
1402 while ((token = strsep(&str, ",")) != NULL) {
1403 if (!strcmp(token, "activity"))
1404 display_mode |= LED_ACTIVITY;
1405 if (!strcmp(token, "display"))
1406 display_mode |= LED_DISP;
1407 if (!strcmp(token, "adisplay"))
1408 display_mode |= LED_ADISP;
1409 if (!strcmp(token, "normal"))
1410 ibm_ansi_order = 0;
1411 if (!strcmp(token, "ansi"))
1412 ibm_ansi_order = 1;
1413 if (!strcmp(token, "fast"))
1414 global_adapter_speed = 0;
1415 if (!strcmp(token, "medium"))
1416 global_adapter_speed = 4;
1417 if (!strcmp(token, "slow"))
1418 global_adapter_speed = 7;
1419 if ((*token == '-') || (isdigit(*token))) {
1420 if (!(j % 2) && (io_base < IM_MAX_HOSTS))
1421 io_port[io_base++] = simple_strtoul(token, NULL, 0);
1422 if ((j % 2) && (id_base < IM_MAX_HOSTS))
1423 scsi_id[id_base++] = simple_strtoul(token, NULL, 0);
1424 j++;
1425 }
1426 }
1427 } else if (ints) {
1428 for (i = 0; i < IM_MAX_HOSTS && 2 * i + 2 < ints[0]; i++) {
1429 io_port[i] = ints[2 * i + 2];
1430 scsi_id[i] = ints[2 * i + 2];
1431 }
1432 }
1433 return;
1434}
1435
1436#if 0
1437 FIXME NEED TO MOVE TO SYSFS
1438
1439static int ibmmca_getinfo(char *buf, int slot, void *dev_id)
1440{
1441 struct Scsi_Host *shpnt;
1442 int len, speciale, connectore, k;
1443 unsigned int pos[8];
1444 unsigned long flags;
1445 struct Scsi_Host *dev = dev_id;
1446
1447 spin_lock_irqsave(dev->host_lock, flags);
1448
1449 shpnt = dev; /* assign host-structure to local pointer */
1450 len = 0; /* set filled text-buffer index to 0 */
1451 /* get the _special contents of the hostdata structure */
1452 speciale = ((struct ibmmca_hostdata *) shpnt->hostdata)->_special;
1453 connectore = ((struct ibmmca_hostdata *) shpnt->hostdata)->_connector_size;
1454 for (k = 2; k < 4; k++)
1455 pos[k] = ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k];
1456 if (speciale == FORCED_DETECTION) { /* forced detection */
1457 len += sprintf(buf + len,
1458 "Adapter category: forced detected\n" "***************************************\n" "*** Forced detected SCSI Adapter ***\n" "*** No chip-information available ***\n" "***************************************\n");
1459 } else if (speciale == INTEGRATED_SCSI) {
1460 /* if the integrated subsystem has been found automatically: */
1461 len += sprintf(buf + len,
1462 "Adapter category: integrated\n" "Chip revision level: %d\n" "Chip status: %s\n" "8 kByte NVRAM status: %s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 1) ? "enabled" : "disabled", (pos[2] & 2) ? "locked" : "accessible");
1463 } else if ((speciale >= 0) && (speciale < ARRAY_SIZE(subsys_list))) {
1464 /* if the subsystem is a slot adapter */
1465 len += sprintf(buf + len, "Adapter category: slot-card\n" "ROM Segment Address: ");
1466 if ((pos[2] & 0xf0) == 0xf0)
1467 len += sprintf(buf + len, "off\n");
1468 else
1469 len += sprintf(buf + len, "0x%x\n", ((pos[2] & 0xf0) << 13) + 0xc0000);
1470 len += sprintf(buf + len, "Chip status: %s\n", (pos[2] & 1) ? "enabled" : "disabled");
1471 len += sprintf(buf + len, "Adapter I/O Offset: 0x%x\n", ((pos[2] & 0x0e) << 2));
1472 } else {
1473 len += sprintf(buf + len, "Adapter category: unknown\n");
1474 }
1475 /* common subsystem information to write to the slotn file */
1476 len += sprintf(buf + len, "Subsystem PUN: %d\n", shpnt->this_id);
1477 len += sprintf(buf + len, "I/O base address range: 0x%x-0x%x\n", (unsigned int) (shpnt->io_port), (unsigned int) (shpnt->io_port + 7));
1478 len += sprintf(buf + len, "MCA-slot size: %d bits", connectore);
1479 /* Now make sure, the bufferlength is devidable by 4 to avoid
1480 * paging problems of the buffer. */
1481 while (len % sizeof(int) != (sizeof(int) - 1))
1482 len += sprintf(buf + len, " ");
1483 len += sprintf(buf + len, "\n");
1484
1485 spin_unlock_irqrestore(shpnt->host_lock, flags);
1486
1487 return len;
1488}
1489#endif
1490
1491static struct scsi_host_template ibmmca_driver_template = {
1492 .proc_name = "ibmmca",
1493 .proc_info = ibmmca_proc_info,
1494 .name = "IBM SCSI-Subsystem",
1495 .queuecommand = ibmmca_queuecommand,
1496 .eh_abort_handler = ibmmca_abort,
1497 .eh_host_reset_handler = ibmmca_host_reset,
1498 .bios_param = ibmmca_biosparam,
1499 .can_queue = 16,
1500 .this_id = 7,
1501 .sg_tablesize = 16,
1502 .cmd_per_lun = 1,
1503 .use_clustering = ENABLE_CLUSTERING,
1504};
1505
1506static int ibmmca_probe(struct device *dev)
1507{
1508 struct Scsi_Host *shpnt;
1509 int port, id, i, j, k, irq, enabled, ret = -EINVAL;
1510 struct mca_device *mca_dev = to_mca_device(dev);
1511 const char *description = ibmmca_description[mca_dev->index];
1512
1513 /* First of all, print the version number of the driver. This is
1514 * important to allow better user bugreports in case of already
1515 * having problems with the MCA_bus probing. */
1516 printk(KERN_INFO "IBM MCA SCSI: Version %s\n", IBMMCA_SCSI_DRIVER_VERSION);
1517 /* The POS2-register of all PS/2 model SCSI-subsystems has the following
1518 * interpretation of bits:
1519 * Bit 7 - 4 : Chip Revision ID (Release)
1520 * Bit 3 - 2 : Reserved
1521 * Bit 1 : 8k NVRAM Disabled
1522 * Bit 0 : Chip Enable (EN-Signal)
1523 * The POS3-register is interpreted as follows:
1524 * Bit 7 - 5 : SCSI ID
1525 * Bit 4 : Reserved = 0
1526 * Bit 3 - 0 : Reserved = 0
1527 * (taken from "IBM, PS/2 Hardware Interface Technical Reference, Common
1528 * Interfaces (1991)").
1529 * In short words, this means, that IBM PS/2 machines only support
1530 * 1 single subsystem by default. The slot-adapters must have another
1531 * configuration on pos2. Here, one has to assume the following
1532 * things for POS2-register:
1533 * Bit 7 - 4 : Chip Revision ID (Release)
1534 * Bit 3 - 1 : port offset factor
1535 * Bit 0 : Chip Enable (EN-Signal)
1536 * As I found a patch here, setting the IO-registers to 0x3540 forced,
1537 * as there was a 0x05 in POS2 on a model 56, I assume, that the
1538 * port 0x3540 must be fix for integrated SCSI-controllers.
1539 * Ok, this discovery leads to the following implementation: (M.Lang) */
1540
1541 /* first look for the IBM SCSI integrated subsystem on the motherboard */
1542 for (j = 0; j < 8; j++) /* read the pos-information */
1543 pos[j] = mca_device_read_pos(mca_dev, j);
1544 id = (pos[3] & 0xe0) >> 5; /* this is correct and represents the PUN */
1545 enabled = (pos[2] &0x01);
1546 if (!enabled) {
1547 printk(KERN_WARNING "IBM MCA SCSI: WARNING - Your SCSI-subsystem is disabled!\n");
1548 printk(KERN_WARNING " SCSI-operations may not work.\n");
1549 }
1550
1551 /* pos2 = pos3 = 0xff if there is no integrated SCSI-subsystem present, but
1552 * if we ignore the settings of all surrounding pos registers, it is not
1553 * completely sufficient to only check pos2 and pos3. */
1554 /* Therefore, now the following if statement is used to
1555 * make sure, we see a real integrated onboard SCSI-interface and no
1556 * internal system information, which gets mapped to some pos registers
1557 * on models 95xx. */
1558 if (mca_dev->slot == MCA_INTEGSCSI &&
1559 ((!pos[0] && !pos[1] && pos[2] > 0 &&
1560 pos[3] > 0 && !pos[4] && !pos[5] &&
1561 !pos[6] && !pos[7]) ||
1562 (pos[0] == 0xff && pos[1] == 0xff &&
1563 pos[2] < 0xff && pos[3] < 0xff &&
1564 pos[4] == 0xff && pos[5] == 0xff &&
1565 pos[6] == 0xff && pos[7] == 0xff))) {
1566 irq = IM_IRQ;
1567 port = IM_IO_PORT;
1568 } else {
1569 irq = IM_IRQ;
1570 port = IM_IO_PORT + ((pos[2] &0x0e) << 2);
1571 if ((mca_dev->index == IBM_SCSI2_FW) && (pos[6] != 0)) {
1572 printk(KERN_ERR "IBM MCA SCSI: ERROR - Wrong POS(6)-register setting!\n");
1573 printk(KERN_ERR " Impossible to determine adapter PUN!\n");
1574 printk(KERN_ERR " Guessing adapter PUN = 7.\n");
1575 id = 7;
1576 } else {
1577 id = (pos[3] & 0xe0) >> 5; /* get subsystem PUN */
1578 if (mca_dev->index == IBM_SCSI2_FW) {
1579 id |= (pos[3] & 0x10) >> 1; /* get subsystem PUN high-bit
1580 * for F/W adapters */
1581 }
1582 }
1583 if ((mca_dev->index == IBM_SCSI2_FW) &&
1584 (pos[4] & 0x01) && (pos[6] == 0)) {
1585 /* IRQ11 is used by SCSI-2 F/W Adapter/A */
1586 printk(KERN_DEBUG "IBM MCA SCSI: SCSI-2 F/W adapter needs IRQ 11.\n");
1587 irq = IM_IRQ_FW;
1588 }
1589 }
1590
1591
1592
1593 /* give detailed information on the subsystem. This helps me
1594 * additionally during debugging and analyzing bug-reports. */
1595 printk(KERN_INFO "IBM MCA SCSI: %s found, io=0x%x, scsi id=%d,\n",
1596 description, port, id);
1597 if (mca_dev->slot == MCA_INTEGSCSI)
1598 printk(KERN_INFO " chip rev.=%d, 8K NVRAM=%s, subsystem=%s\n", ((pos[2] & 0xf0) >> 4), (pos[2] & 2) ? "locked" : "accessible", (pos[2] & 1) ? "enabled." : "disabled.");
1599 else {
1600 if ((pos[2] & 0xf0) == 0xf0)
1601 printk(KERN_DEBUG " ROM Addr.=off,");
1602 else
1603 printk(KERN_DEBUG " ROM Addr.=0x%x,", ((pos[2] & 0xf0) << 13) + 0xc0000);
1604
1605 printk(KERN_DEBUG " port-offset=0x%x, subsystem=%s\n", ((pos[2] & 0x0e) << 2), (pos[2] & 1) ? "enabled." : "disabled.");
1606 }
1607
1608 /* check I/O region */
1609 if (!request_region(port, IM_N_IO_PORT, description)) {
1610 printk(KERN_ERR "IBM MCA SCSI: Unable to get I/O region 0x%x-0x%x (%d ports).\n", port, port + IM_N_IO_PORT - 1, IM_N_IO_PORT);
1611 goto out_fail;
1612 }
1613
1614 /* register host */
1615 shpnt = scsi_host_alloc(&ibmmca_driver_template,
1616 sizeof(struct ibmmca_hostdata));
1617 if (!shpnt) {
1618 printk(KERN_ERR "IBM MCA SCSI: Unable to register host.\n");
1619 goto out_release;
1620 }
1621
1622 dev_set_drvdata(dev, shpnt);
1623 if(request_irq(irq, interrupt_handler, IRQF_SHARED, description, dev)) {
1624 printk(KERN_ERR "IBM MCA SCSI: failed to request interrupt %d\n", irq);
1625 goto out_free_host;
1626 }
1627
1628 /* request I/O region */
1629 special(shpnt) = mca_dev->index; /* important assignment or else crash! */
1630 subsystem_connector_size(shpnt) = 0; /* preset slot-size */
1631 shpnt->irq = irq; /* assign necessary stuff for the adapter */
1632 shpnt->io_port = port;
1633 shpnt->n_io_port = IM_N_IO_PORT;
1634 shpnt->this_id = id;
1635 shpnt->max_id = 8; /* 8 PUNs are default */
1636 /* now, the SCSI-subsystem is connected to Linux */
1637
1638#ifdef IM_DEBUG_PROBE
1639 ctrl = (unsigned int) (inb(IM_CTR_REG(found))); /* get control-register status */
1640 printk("IBM MCA SCSI: Control Register contents: %x, status: %x\n", ctrl, inb(IM_STAT_REG(found)));
1641 printk("IBM MCA SCSI: This adapters' POS-registers: ");
1642 for (i = 0; i < 8; i++)
1643 printk("%x ", pos[i]);
1644 printk("\n");
1645#endif
1646 reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS;
1647
1648 for (i = 0; i < 16; i++) /* reset the tables */
1649 for (j = 0; j < 8; j++)
1650 get_ldn(shpnt)[i][j] = MAX_LOG_DEV;
1651
1652 /* check which logical devices exist */
1653 /* after this line, local interrupting is possible: */
1654 local_checking_phase_flag(shpnt) = 1;
1655 check_devices(shpnt, mca_dev->index); /* call by value, using the global variable hosts */
1656 local_checking_phase_flag(shpnt) = 0;
1657
1658 /* an ibm mca subsystem has been detected */
1659
1660 for (k = 2; k < 7; k++)
1661 ((struct ibmmca_hostdata *) shpnt->hostdata)->_pos[k] = pos[k];
1662 ((struct ibmmca_hostdata *) shpnt->hostdata)->_special = INTEGRATED_SCSI;
1663 mca_device_set_name(mca_dev, description);
1664 /* FIXME: NEED TO REPLUMB TO SYSFS
1665 mca_set_adapter_procfn(MCA_INTEGSCSI, (MCA_ProcFn) ibmmca_getinfo, shpnt);
1666 */
1667 mca_device_set_claim(mca_dev, 1);
1668 if (scsi_add_host(shpnt, dev)) {
1669 dev_printk(KERN_ERR, dev, "IBM MCA SCSI: scsi_add_host failed\n");
1670 goto out_free_host;
1671 }
1672 scsi_scan_host(shpnt);
1673
1674 return 0;
1675 out_free_host:
1676 scsi_host_put(shpnt);
1677 out_release:
1678 release_region(port, IM_N_IO_PORT);
1679 out_fail:
1680 return ret;
1681}
1682
1683static int __devexit ibmmca_remove(struct device *dev)
1684{
1685 struct Scsi_Host *shpnt = dev_get_drvdata(dev);
1686 scsi_remove_host(shpnt);
1687 release_region(shpnt->io_port, shpnt->n_io_port);
1688 free_irq(shpnt->irq, dev);
1689 scsi_host_put(shpnt);
1690 return 0;
1691}
1692
1693/* The following routine is the SCSI command queue for the midlevel driver */
1694static int ibmmca_queuecommand_lck(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *))
1695{
1696 unsigned int ldn;
1697 unsigned int scsi_cmd;
1698 struct im_scb *scb;
1699 struct Scsi_Host *shpnt;
1700 int current_ldn;
1701 int id, lun;
1702 int target;
1703 int max_pun;
1704 int i;
1705 struct scatterlist *sg;
1706
1707 shpnt = cmd->device->host;
1708
1709 max_pun = subsystem_maxid(shpnt);
1710 if (ibm_ansi_order) {
1711 target = max_pun - 1 - cmd->device->id;
1712 if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt)))
1713 target--;
1714 else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt)))
1715 target++;
1716 } else
1717 target = cmd->device->id;
1718
1719 /* if (target,lun) is NO LUN or not existing at all, return error */
1720 if ((get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_LUN) || (get_scsi(shpnt)[target][cmd->device->lun] == TYPE_NO_DEVICE)) {
1721 cmd->result = DID_NO_CONNECT << 16;
1722 if (done)
1723 done(cmd);
1724 return 0;
1725 }
1726
1727 /*if (target,lun) unassigned, do further checks... */
1728 ldn = get_ldn(shpnt)[target][cmd->device->lun];
1729 if (ldn >= MAX_LOG_DEV) { /* on invalid ldn do special stuff */
1730 if (ldn > MAX_LOG_DEV) { /* dynamical remapping if ldn unassigned */
1731 current_ldn = next_ldn(shpnt); /* stop-value for one circle */
1732 while (ld(shpnt)[next_ldn(shpnt)].cmd) { /* search for a occupied, but not in */
1733 /* command-processing ldn. */
1734 next_ldn(shpnt)++;
1735 if (next_ldn(shpnt) >= MAX_LOG_DEV)
1736 next_ldn(shpnt) = 7;
1737 if (current_ldn == next_ldn(shpnt)) { /* One circle done ? */
1738 /* no non-processing ldn found */
1739 scmd_printk(KERN_WARNING, cmd,
1740 "IBM MCA SCSI: Cannot assign SCSI-device dynamically!\n"
1741 " On ldn 7-14 SCSI-commands everywhere in progress.\n"
1742 " Reporting DID_NO_CONNECT for device.\n");
1743 cmd->result = DID_NO_CONNECT << 16; /* return no connect */
1744 if (done)
1745 done(cmd);
1746 return 0;
1747 }
1748 }
1749
1750 /* unmap non-processing ldn */
1751 for (id = 0; id < max_pun; id++)
1752 for (lun = 0; lun < 8; lun++) {
1753 if (get_ldn(shpnt)[id][lun] == next_ldn(shpnt)) {
1754 get_ldn(shpnt)[id][lun] = TYPE_NO_DEVICE;
1755 get_scsi(shpnt)[id][lun] = TYPE_NO_DEVICE;
1756 /* unmap entry */
1757 }
1758 }
1759 /* set reduced interrupt_handler-mode for checking */
1760 local_checking_phase_flag(shpnt) = 1;
1761 /* map found ldn to pun,lun */
1762 get_ldn(shpnt)[target][cmd->device->lun] = next_ldn(shpnt);
1763 /* change ldn to the right value, that is now next_ldn */
1764 ldn = next_ldn(shpnt);
1765 /* unassign all ldns (pun,lun,ldn does not matter for remove) */
1766 immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN);
1767 /* set only LDN for remapped device */
1768 immediate_assign(shpnt, target, cmd->device->lun, ldn, SET_LDN);
1769 /* get device information for ld[ldn] */
1770 if (device_exists(shpnt, ldn, &ld(shpnt)[ldn].block_length, &ld(shpnt)[ldn].device_type)) {
1771 ld(shpnt)[ldn].cmd = NULL; /* To prevent panic set 0, because
1772 devices that were not assigned,
1773 should have nothing in progress. */
1774 get_scsi(shpnt)[target][cmd->device->lun] = ld(shpnt)[ldn].device_type;
1775 /* increase assignment counters for statistics in /proc */
1776 IBM_DS(shpnt).dynamical_assignments++;
1777 IBM_DS(shpnt).ldn_assignments[ldn]++;
1778 } else
1779 /* panic here, because a device, found at boottime has
1780 vanished */
1781 panic("IBM MCA SCSI: ldn=0x%x, SCSI-device on (%d,%d) vanished!\n", ldn, target, cmd->device->lun);
1782 /* unassign again all ldns (pun,lun,ldn does not matter for remove) */
1783 immediate_assign(shpnt, 0, 0, 0, REMOVE_LDN);
1784 /* remap all ldns, as written in the pun/lun table */
1785 lun = 0;
1786#ifdef CONFIG_SCSI_MULTI_LUN
1787 for (lun = 0; lun < 8; lun++)
1788#endif
1789 for (id = 0; id < max_pun; id++) {
1790 if (get_ldn(shpnt)[id][lun] <= MAX_LOG_DEV)
1791 immediate_assign(shpnt, id, lun, get_ldn(shpnt)[id][lun], SET_LDN);
1792 }
1793 /* set back to normal interrupt_handling */
1794 local_checking_phase_flag(shpnt) = 0;
1795#ifdef IM_DEBUG_PROBE
1796 /* Information on syslog terminal */
1797 printk("IBM MCA SCSI: ldn=0x%x dynamically reassigned to (%d,%d).\n", ldn, target, cmd->device->lun);
1798#endif
1799 /* increase next_ldn for next dynamical assignment */
1800 next_ldn(shpnt)++;
1801 if (next_ldn(shpnt) >= MAX_LOG_DEV)
1802 next_ldn(shpnt) = 7;
1803 } else { /* wall against Linux accesses to the subsystem adapter */
1804 cmd->result = DID_BAD_TARGET << 16;
1805 if (done)
1806 done(cmd);
1807 return 0;
1808 }
1809 }
1810
1811 /*verify there is no command already in progress for this log dev */
1812 if (ld(shpnt)[ldn].cmd)
1813 panic("IBM MCA SCSI: cmd already in progress for this ldn.\n");
1814
1815 /*save done in cmd, and save cmd for the interrupt handler */
1816 cmd->scsi_done = done;
1817 ld(shpnt)[ldn].cmd = cmd;
1818
1819 /*fill scb information independent of the scsi command */
1820 scb = &(ld(shpnt)[ldn].scb);
1821 ld(shpnt)[ldn].tsb.dev_status = 0;
1822 scb->enable = IM_REPORT_TSB_ONLY_ON_ERROR | IM_RETRY_ENABLE;
1823 scb->tsb_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].tsb));
1824 scsi_cmd = cmd->cmnd[0];
1825
1826 if (scsi_sg_count(cmd)) {
1827 BUG_ON(scsi_sg_count(cmd) > 16);
1828
1829 scsi_for_each_sg(cmd, sg, scsi_sg_count(cmd), i) {
1830 ld(shpnt)[ldn].sge[i].address = (void *) (isa_page_to_bus(sg_page(sg)) + sg->offset);
1831 ld(shpnt)[ldn].sge[i].byte_length = sg->length;
1832 }
1833 scb->enable |= IM_POINTER_TO_LIST;
1834 scb->sys_buf_adr = isa_virt_to_bus(&(ld(shpnt)[ldn].sge[0]));
1835 scb->sys_buf_length = scsi_sg_count(cmd) * sizeof(struct im_sge);
1836 } else {
1837 scb->sys_buf_adr = isa_virt_to_bus(scsi_sglist(cmd));
1838 /* recent Linux midlevel SCSI places 1024 byte for inquiry
1839 * command. Far too much for old PS/2 hardware. */
1840 switch (scsi_cmd) {
1841 /* avoid command errors by setting bufferlengths to
1842 * ANSI-standard. Beware of forcing it to 255,
1843 * this could SEGV the kernel!!! */
1844 case INQUIRY:
1845 case REQUEST_SENSE:
1846 case MODE_SENSE:
1847 case MODE_SELECT:
1848 if (scsi_bufflen(cmd) > 255)
1849 scb->sys_buf_length = 255;
1850 else
1851 scb->sys_buf_length = scsi_bufflen(cmd);
1852 break;
1853 case TEST_UNIT_READY:
1854 scb->sys_buf_length = 0;
1855 break;
1856 default:
1857 scb->sys_buf_length = scsi_bufflen(cmd);
1858 break;
1859 }
1860 }
1861 /*fill scb information dependent on scsi command */
1862
1863#ifdef IM_DEBUG_CMD
1864 printk("issue scsi cmd=%02x to ldn=%d\n", scsi_cmd, ldn);
1865#endif
1866
1867 /* for specific device-type debugging: */
1868#ifdef IM_DEBUG_CMD_SPEC_DEV
1869 if (ld(shpnt)[ldn].device_type == IM_DEBUG_CMD_DEVICE)
1870 printk("(SCSI-device-type=0x%x) issue scsi cmd=%02x to ldn=%d\n", ld(shpnt)[ldn].device_type, scsi_cmd, ldn);
1871#endif
1872
1873 /* for possible panics store current command */
1874 last_scsi_command(shpnt)[ldn] = scsi_cmd;
1875 last_scsi_type(shpnt)[ldn] = IM_SCB;
1876 /* update statistical info */
1877 IBM_DS(shpnt).total_accesses++;
1878 IBM_DS(shpnt).ldn_access[ldn]++;
1879
1880 switch (scsi_cmd) {
1881 case READ_6:
1882 case WRITE_6:
1883 case READ_10:
1884 case WRITE_10:
1885 case READ_12:
1886 case WRITE_12:
1887 /* Distinguish between disk and other devices. Only disks (that are the
1888 most frequently accessed devices) should be supported by the
1889 IBM-SCSI-Subsystem commands. */
1890 switch (ld(shpnt)[ldn].device_type) {
1891 case TYPE_DISK: /* for harddisks enter here ... */
1892 case TYPE_MOD: /* ... try it also for MO-drives (send flames as */
1893 /* you like, if this won't work.) */
1894 if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12) {
1895 /* read command preparations */
1896 scb->enable |= IM_READ_CONTROL;
1897 IBM_DS(shpnt).ldn_read_access[ldn]++; /* increase READ-access on ldn stat. */
1898 scb->command = IM_READ_DATA_CMD | IM_NO_DISCONNECT;
1899 } else { /* write command preparations */
1900 IBM_DS(shpnt).ldn_write_access[ldn]++; /* increase write-count on ldn stat. */
1901 scb->command = IM_WRITE_DATA_CMD | IM_NO_DISCONNECT;
1902 }
1903 if (scsi_cmd == READ_6 || scsi_cmd == WRITE_6) {
1904 scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[3]) << 0) | (((unsigned) cmd->cmnd[2]) << 8) | ((((unsigned) cmd->cmnd[1]) & 0x1f) << 16);
1905 scb->u2.blk.count = (unsigned) cmd->cmnd[4];
1906 } else {
1907 scb->u1.log_blk_adr = (((unsigned) cmd->cmnd[5]) << 0) | (((unsigned) cmd->cmnd[4]) << 8) | (((unsigned) cmd->cmnd[3]) << 16) | (((unsigned) cmd->cmnd[2]) << 24);
1908 scb->u2.blk.count = (((unsigned) cmd->cmnd[8]) << 0) | (((unsigned) cmd->cmnd[7]) << 8);
1909 }
1910 last_scsi_logical_block(shpnt)[ldn] = scb->u1.log_blk_adr;
1911 last_scsi_blockcount(shpnt)[ldn] = scb->u2.blk.count;
1912 scb->u2.blk.length = ld(shpnt)[ldn].block_length;
1913 break;
1914 /* for other devices, enter here. Other types are not known by
1915 Linux! TYPE_NO_LUN is forbidden as valid device. */
1916 case TYPE_ROM:
1917 case TYPE_TAPE:
1918 case TYPE_PROCESSOR:
1919 case TYPE_WORM:
1920 case TYPE_SCANNER:
1921 case TYPE_MEDIUM_CHANGER:
1922 /* If there is a sequential-device, IBM recommends to use
1923 IM_OTHER_SCSI_CMD_CMD instead of subsystem READ/WRITE.
1924 This includes CD-ROM devices, too, due to the partial sequential
1925 read capabilities. */
1926 scb->command = IM_OTHER_SCSI_CMD_CMD;
1927 if (scsi_cmd == READ_6 || scsi_cmd == READ_10 || scsi_cmd == READ_12)
1928 /* enable READ */
1929 scb->enable |= IM_READ_CONTROL;
1930 scb->enable |= IM_BYPASS_BUFFER;
1931 scb->u1.scsi_cmd_length = cmd->cmd_len;
1932 memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len);
1933 last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
1934 /* Read/write on this non-disk devices is also displayworthy,
1935 so flash-up the LED/display. */
1936 break;
1937 }
1938 break;
1939 case INQUIRY:
1940 IBM_DS(shpnt).ldn_inquiry_access[ldn]++;
1941 scb->command = IM_DEVICE_INQUIRY_CMD;
1942 scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
1943 scb->u1.log_blk_adr = 0;
1944 break;
1945 case TEST_UNIT_READY:
1946 scb->command = IM_OTHER_SCSI_CMD_CMD;
1947 scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
1948 scb->u1.log_blk_adr = 0;
1949 scb->u1.scsi_cmd_length = 6;
1950 memcpy(scb->u2.scsi_command, cmd->cmnd, 6);
1951 last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
1952 break;
1953 case READ_CAPACITY:
1954 /* the length of system memory buffer must be exactly 8 bytes */
1955 scb->command = IM_READ_CAPACITY_CMD;
1956 scb->enable |= IM_READ_CONTROL | IM_BYPASS_BUFFER;
1957 if (scb->sys_buf_length > 8)
1958 scb->sys_buf_length = 8;
1959 break;
1960 /* Commands that need read-only-mode (system <- device): */
1961 case REQUEST_SENSE:
1962 scb->command = IM_REQUEST_SENSE_CMD;
1963 scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
1964 break;
1965 /* Commands that need write-only-mode (system -> device): */
1966 case MODE_SELECT:
1967 case MODE_SELECT_10:
1968 IBM_DS(shpnt).ldn_modeselect_access[ldn]++;
1969 scb->command = IM_OTHER_SCSI_CMD_CMD;
1970 scb->enable |= IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER; /*Select needs WRITE-enabled */
1971 scb->u1.scsi_cmd_length = cmd->cmd_len;
1972 memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len);
1973 last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
1974 break;
1975 /* For other commands, read-only is useful. Most other commands are
1976 running without an input-data-block. */
1977 default:
1978 scb->command = IM_OTHER_SCSI_CMD_CMD;
1979 scb->enable |= IM_READ_CONTROL | IM_SUPRESS_EXCEPTION_SHORT | IM_BYPASS_BUFFER;
1980 scb->u1.scsi_cmd_length = cmd->cmd_len;
1981 memcpy(scb->u2.scsi_command, cmd->cmnd, cmd->cmd_len);
1982 last_scsi_type(shpnt)[ldn] = IM_LONG_SCB;
1983 break;
1984 }
1985 /*issue scb command, and return */
1986 if (++disk_rw_in_progress == 1)
1987 PS2_DISK_LED_ON(shpnt->host_no, target);
1988
1989 if (last_scsi_type(shpnt)[ldn] == IM_LONG_SCB) {
1990 issue_cmd(shpnt, isa_virt_to_bus(scb), IM_LONG_SCB | ldn);
1991 IBM_DS(shpnt).long_scbs++;
1992 } else {
1993 issue_cmd(shpnt, isa_virt_to_bus(scb), IM_SCB | ldn);
1994 IBM_DS(shpnt).scbs++;
1995 }
1996 return 0;
1997}
1998
1999static DEF_SCSI_QCMD(ibmmca_queuecommand)
2000
2001static int __ibmmca_abort(Scsi_Cmnd * cmd)
2002{
2003 /* Abort does not work, as the adapter never generates an interrupt on
2004 * whatever situation is simulated, even when really pending commands
2005 * are running on the adapters' hardware ! */
2006
2007 struct Scsi_Host *shpnt;
2008 unsigned int ldn;
2009 void (*saved_done) (Scsi_Cmnd *);
2010 int target;
2011 int max_pun;
2012 unsigned long imm_command;
2013
2014#ifdef IM_DEBUG_PROBE
2015 printk("IBM MCA SCSI: Abort subroutine called...\n");
2016#endif
2017
2018 shpnt = cmd->device->host;
2019
2020 max_pun = subsystem_maxid(shpnt);
2021 if (ibm_ansi_order) {
2022 target = max_pun - 1 - cmd->device->id;
2023 if ((target <= subsystem_pun(shpnt)) && (cmd->device->id <= subsystem_pun(shpnt)))
2024 target--;
2025 else if ((target >= subsystem_pun(shpnt)) && (cmd->device->id >= subsystem_pun(shpnt)))
2026 target++;
2027 } else
2028 target = cmd->device->id;
2029
2030 /* get logical device number, and disable system interrupts */
2031 printk(KERN_WARNING "IBM MCA SCSI: Sending abort to device pun=%d, lun=%d.\n", target, cmd->device->lun);
2032 ldn = get_ldn(shpnt)[target][cmd->device->lun];
2033
2034 /*if cmd for this ldn has already finished, no need to abort */
2035 if (!ld(shpnt)[ldn].cmd) {
2036 return SUCCESS;
2037 }
2038
2039 /* Clear ld.cmd, save done function, install internal done,
2040 * send abort immediate command (this enables sys. interrupts),
2041 * and wait until the interrupt arrives.
2042 */
2043 saved_done = cmd->scsi_done;
2044 cmd->scsi_done = internal_done;
2045 cmd->SCp.Status = 0;
2046 last_scsi_command(shpnt)[ldn] = IM_ABORT_IMM_CMD;
2047 last_scsi_type(shpnt)[ldn] = IM_IMM_CMD;
2048 imm_command = inl(IM_CMD_REG(shpnt));
2049 imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */
2050 imm_command |= (unsigned long) (IM_ABORT_IMM_CMD);
2051 /* must wait for attention reg not busy */
2052 /* FIXME - timeout, politeness */
2053 while (1) {
2054 if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
2055 break;
2056 }
2057 /* write registers and enable system interrupts */
2058 outl(imm_command, IM_CMD_REG(shpnt));
2059 outb(IM_IMM_CMD | ldn, IM_ATTN_REG(shpnt));
2060#ifdef IM_DEBUG_PROBE
2061 printk("IBM MCA SCSI: Abort queued to adapter...\n");
2062#endif
2063 spin_unlock_irq(shpnt->host_lock);
2064 while (!cmd->SCp.Status)
2065 yield();
2066 spin_lock_irq(shpnt->host_lock);
2067 cmd->scsi_done = saved_done;
2068#ifdef IM_DEBUG_PROBE
2069 printk("IBM MCA SCSI: Abort returned with adapter response...\n");
2070#endif
2071
2072 /*if abort went well, call saved done, then return success or error */
2073 if (cmd->result == (DID_ABORT << 16))
2074 {
2075 cmd->result |= DID_ABORT << 16;
2076 if (cmd->scsi_done)
2077 (cmd->scsi_done) (cmd);
2078 ld(shpnt)[ldn].cmd = NULL;
2079#ifdef IM_DEBUG_PROBE
2080 printk("IBM MCA SCSI: Abort finished with success.\n");
2081#endif
2082 return SUCCESS;
2083 } else {
2084 cmd->result |= DID_NO_CONNECT << 16;
2085 if (cmd->scsi_done)
2086 (cmd->scsi_done) (cmd);
2087 ld(shpnt)[ldn].cmd = NULL;
2088#ifdef IM_DEBUG_PROBE
2089 printk("IBM MCA SCSI: Abort failed.\n");
2090#endif
2091 return FAILED;
2092 }
2093}
2094
2095static int ibmmca_abort(Scsi_Cmnd * cmd)
2096{
2097 struct Scsi_Host *shpnt = cmd->device->host;
2098 int rc;
2099
2100 spin_lock_irq(shpnt->host_lock);
2101 rc = __ibmmca_abort(cmd);
2102 spin_unlock_irq(shpnt->host_lock);
2103
2104 return rc;
2105}
2106
2107static int __ibmmca_host_reset(Scsi_Cmnd * cmd)
2108{
2109 struct Scsi_Host *shpnt;
2110 Scsi_Cmnd *cmd_aid;
2111 int ticks, i;
2112 unsigned long imm_command;
2113
2114 BUG_ON(cmd == NULL);
2115
2116 ticks = IM_RESET_DELAY * HZ;
2117 shpnt = cmd->device->host;
2118
2119 if (local_checking_phase_flag(shpnt)) {
2120 printk(KERN_WARNING "IBM MCA SCSI: unable to reset while checking devices.\n");
2121 return FAILED;
2122 }
2123
2124 /* issue reset immediate command to subsystem, and wait for interrupt */
2125 printk("IBM MCA SCSI: resetting all devices.\n");
2126 reset_status(shpnt) = IM_RESET_IN_PROGRESS;
2127 last_scsi_command(shpnt)[0xf] = IM_RESET_IMM_CMD;
2128 last_scsi_type(shpnt)[0xf] = IM_IMM_CMD;
2129 imm_command = inl(IM_CMD_REG(shpnt));
2130 imm_command &= (unsigned long) (0xffff0000); /* mask reserved stuff */
2131 imm_command |= (unsigned long) (IM_RESET_IMM_CMD);
2132 /* must wait for attention reg not busy */
2133 while (1) {
2134 if (!(inb(IM_STAT_REG(shpnt)) & IM_BUSY))
2135 break;
2136 spin_unlock_irq(shpnt->host_lock);
2137 yield();
2138 spin_lock_irq(shpnt->host_lock);
2139 }
2140 /*write registers and enable system interrupts */
2141 outl(imm_command, IM_CMD_REG(shpnt));
2142 outb(IM_IMM_CMD | 0xf, IM_ATTN_REG(shpnt));
2143 /* wait for interrupt finished or intr_stat register to be set, as the
2144 * interrupt will not be executed, while we are in here! */
2145
2146 /* FIXME: This is really really icky we so want a sleeping version of this ! */
2147 while (reset_status(shpnt) == IM_RESET_IN_PROGRESS && --ticks && ((inb(IM_INTR_REG(shpnt)) & 0x8f) != 0x8f)) {
2148 udelay((1 + 999 / HZ) * 1000);
2149 barrier();
2150 }
2151 /* if reset did not complete, just return an error */
2152 if (!ticks) {
2153 printk(KERN_ERR "IBM MCA SCSI: reset did not complete within %d seconds.\n", IM_RESET_DELAY);
2154 reset_status(shpnt) = IM_RESET_FINISHED_FAIL;
2155 return FAILED;
2156 }
2157
2158 if ((inb(IM_INTR_REG(shpnt)) & 0x8f) == 0x8f) {
2159 /* analysis done by this routine and not by the intr-routine */
2160 if (inb(IM_INTR_REG(shpnt)) == 0xaf)
2161 reset_status(shpnt) = IM_RESET_FINISHED_OK_NO_INT;
2162 else if (inb(IM_INTR_REG(shpnt)) == 0xcf)
2163 reset_status(shpnt) = IM_RESET_FINISHED_FAIL;
2164 else /* failed, 4get it */
2165 reset_status(shpnt) = IM_RESET_NOT_IN_PROGRESS_NO_INT;
2166 outb(IM_EOI | 0xf, IM_ATTN_REG(shpnt));
2167 }
2168
2169 /* if reset failed, just return an error */
2170 if (reset_status(shpnt) == IM_RESET_FINISHED_FAIL) {
2171 printk(KERN_ERR "IBM MCA SCSI: reset failed.\n");
2172 return FAILED;
2173 }
2174
2175 /* so reset finished ok - call outstanding done's, and return success */
2176 printk(KERN_INFO "IBM MCA SCSI: Reset successfully completed.\n");
2177 for (i = 0; i < MAX_LOG_DEV; i++) {
2178 cmd_aid = ld(shpnt)[i].cmd;
2179 if (cmd_aid && cmd_aid->scsi_done) {
2180 ld(shpnt)[i].cmd = NULL;
2181 cmd_aid->result = DID_RESET << 16;
2182 }
2183 }
2184 return SUCCESS;
2185}
2186
2187static int ibmmca_host_reset(Scsi_Cmnd * cmd)
2188{
2189 struct Scsi_Host *shpnt = cmd->device->host;
2190 int rc;
2191
2192 spin_lock_irq(shpnt->host_lock);
2193 rc = __ibmmca_host_reset(cmd);
2194 spin_unlock_irq(shpnt->host_lock);
2195
2196 return rc;
2197}
2198
2199static int ibmmca_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int *info)
2200{
2201 int size = capacity;
2202 info[0] = 64;
2203 info[1] = 32;
2204 info[2] = size / (info[0] * info[1]);
2205 if (info[2] >= 1024) {
2206 info[0] = 128;
2207 info[1] = 63;
2208 info[2] = size / (info[0] * info[1]);
2209 if (info[2] >= 1024) {
2210 info[0] = 255;
2211 info[1] = 63;
2212 info[2] = size / (info[0] * info[1]);
2213 if (info[2] >= 1024)
2214 info[2] = 1023;
2215 }
2216 }
2217 return 0;
2218}
2219
2220/* calculate percentage of total accesses on a ldn */
2221static int ldn_access_load(struct Scsi_Host *shpnt, int ldn)
2222{
2223 if (IBM_DS(shpnt).total_accesses == 0)
2224 return (0);
2225 if (IBM_DS(shpnt).ldn_access[ldn] == 0)
2226 return (0);
2227 return (IBM_DS(shpnt).ldn_access[ldn] * 100) / IBM_DS(shpnt).total_accesses;
2228}
2229
2230/* calculate total amount of r/w-accesses */
2231static int ldn_access_total_read_write(struct Scsi_Host *shpnt)
2232{
2233 int a;
2234 int i;
2235
2236 a = 0;
2237 for (i = 0; i <= MAX_LOG_DEV; i++)
2238 a += IBM_DS(shpnt).ldn_read_access[i] + IBM_DS(shpnt).ldn_write_access[i];
2239 return (a);
2240}
2241
2242static int ldn_access_total_inquiry(struct Scsi_Host *shpnt)
2243{
2244 int a;
2245 int i;
2246
2247 a = 0;
2248 for (i = 0; i <= MAX_LOG_DEV; i++)
2249 a += IBM_DS(shpnt).ldn_inquiry_access[i];
2250 return (a);
2251}
2252
2253static int ldn_access_total_modeselect(struct Scsi_Host *shpnt)
2254{
2255 int a;
2256 int i;
2257
2258 a = 0;
2259 for (i = 0; i <= MAX_LOG_DEV; i++)
2260 a += IBM_DS(shpnt).ldn_modeselect_access[i];
2261 return (a);
2262}
2263
2264/* routine to display info in the proc-fs-structure (a deluxe feature) */
2265static int ibmmca_proc_info(struct Scsi_Host *shpnt, char *buffer, char **start, off_t offset, int length, int inout)
2266{
2267 int len = 0;
2268 int i, id, lun;
2269 unsigned long flags;
2270 int max_pun;
2271
2272
2273 spin_lock_irqsave(shpnt->host_lock, flags); /* Check it */
2274
2275 max_pun = subsystem_maxid(shpnt);
2276
2277 len += sprintf(buffer + len, "\n IBM-SCSI-Subsystem-Linux-Driver, Version %s\n\n\n", IBMMCA_SCSI_DRIVER_VERSION);
2278 len += sprintf(buffer + len, " SCSI Access-Statistics:\n");
2279 len += sprintf(buffer + len, " Device Scanning Order....: %s\n", (ibm_ansi_order) ? "IBM/ANSI" : "New Industry Standard");
2280#ifdef CONFIG_SCSI_MULTI_LUN
2281 len += sprintf(buffer + len, " Multiple LUN probing.....: Yes\n");
2282#else
2283 len += sprintf(buffer + len, " Multiple LUN probing.....: No\n");
2284#endif
2285 len += sprintf(buffer + len, " This Hostnumber..........: %d\n", shpnt->host_no);
2286 len += sprintf(buffer + len, " Base I/O-Port............: 0x%x\n", (unsigned int) (IM_CMD_REG(shpnt)));
2287 len += sprintf(buffer + len, " (Shared) IRQ.............: %d\n", IM_IRQ);
2288 len += sprintf(buffer + len, " Total Interrupts.........: %d\n", IBM_DS(shpnt).total_interrupts);
2289 len += sprintf(buffer + len, " Total SCSI Accesses......: %d\n", IBM_DS(shpnt).total_accesses);
2290 len += sprintf(buffer + len, " Total short SCBs.........: %d\n", IBM_DS(shpnt).scbs);
2291 len += sprintf(buffer + len, " Total long SCBs..........: %d\n", IBM_DS(shpnt).long_scbs);
2292 len += sprintf(buffer + len, " Total SCSI READ/WRITE..: %d\n", ldn_access_total_read_write(shpnt));
2293 len += sprintf(buffer + len, " Total SCSI Inquiries...: %d\n", ldn_access_total_inquiry(shpnt));
2294 len += sprintf(buffer + len, " Total SCSI Modeselects.: %d\n", ldn_access_total_modeselect(shpnt));
2295 len += sprintf(buffer + len, " Total SCSI other cmds..: %d\n", IBM_DS(shpnt).total_accesses - ldn_access_total_read_write(shpnt)
2296 - ldn_access_total_modeselect(shpnt)
2297 - ldn_access_total_inquiry(shpnt));
2298 len += sprintf(buffer + len, " Total SCSI command fails.: %d\n\n", IBM_DS(shpnt).total_errors);
2299 len += sprintf(buffer + len, " Logical-Device-Number (LDN) Access-Statistics:\n");
2300 len += sprintf(buffer + len, " LDN | Accesses [%%] | READ | WRITE | ASSIGNMENTS\n");
2301 len += sprintf(buffer + len, " -----|--------------|-----------|-----------|--------------\n");
2302 for (i = 0; i <= MAX_LOG_DEV; i++)
2303 len += sprintf(buffer + len, " %2X | %3d | %8d | %8d | %8d\n", i, ldn_access_load(shpnt, i), IBM_DS(shpnt).ldn_read_access[i], IBM_DS(shpnt).ldn_write_access[i], IBM_DS(shpnt).ldn_assignments[i]);
2304 len += sprintf(buffer + len, " -----------------------------------------------------------\n\n");
2305 len += sprintf(buffer + len, " Dynamical-LDN-Assignment-Statistics:\n");
2306 len += sprintf(buffer + len, " Number of physical SCSI-devices..: %d (+ Adapter)\n", IBM_DS(shpnt).total_scsi_devices);
2307 len += sprintf(buffer + len, " Dynamical Assignment necessary...: %s\n", IBM_DS(shpnt).dyn_flag ? "Yes" : "No ");
2308 len += sprintf(buffer + len, " Next LDN to be assigned..........: 0x%x\n", next_ldn(shpnt));
2309 len += sprintf(buffer + len, " Dynamical assignments done yet...: %d\n", IBM_DS(shpnt).dynamical_assignments);
2310 len += sprintf(buffer + len, "\n Current SCSI-Device-Mapping:\n");
2311 len += sprintf(buffer + len, " Physical SCSI-Device Map Logical SCSI-Device Map\n");
2312 len += sprintf(buffer + len, " ID\\LUN 0 1 2 3 4 5 6 7 ID\\LUN 0 1 2 3 4 5 6 7\n");
2313 for (id = 0; id < max_pun; id++) {
2314 len += sprintf(buffer + len, " %2d ", id);
2315 for (lun = 0; lun < 8; lun++)
2316 len += sprintf(buffer + len, "%2s ", ti_p(get_scsi(shpnt)[id][lun]));
2317 len += sprintf(buffer + len, " %2d ", id);
2318 for (lun = 0; lun < 8; lun++)
2319 len += sprintf(buffer + len, "%2s ", ti_l(get_ldn(shpnt)[id][lun]));
2320 len += sprintf(buffer + len, "\n");
2321 }
2322
2323 len += sprintf(buffer + len, "(A = IBM-Subsystem, D = Harddisk, T = Tapedrive, P = Processor, W = WORM,\n");
2324 len += sprintf(buffer + len, " R = CD-ROM, S = Scanner, M = MO-Drive, C = Medium-Changer, + = unprovided LUN,\n");
2325 len += sprintf(buffer + len, " - = nothing found, nothing assigned or unprobed LUN)\n\n");
2326
2327 *start = buffer + offset;
2328 len -= offset;
2329 if (len > length)
2330 len = length;
2331 spin_unlock_irqrestore(shpnt->host_lock, flags);
2332 return len;
2333}
2334
2335static int option_setup(char *str)
2336{
2337 int ints[IM_MAX_HOSTS];
2338 char *cur = str;
2339 int i = 1;
2340
2341 while (cur && isdigit(*cur) && i < IM_MAX_HOSTS) {
2342 ints[i++] = simple_strtoul(cur, NULL, 0);
2343 if ((cur = strchr(cur, ',')) != NULL)
2344 cur++;
2345 }
2346 ints[0] = i - 1;
2347 internal_ibmmca_scsi_setup(cur, ints);
2348 return 1;
2349}
2350
2351__setup("ibmmcascsi=", option_setup);
2352
2353static struct mca_driver ibmmca_driver = {
2354 .id_table = ibmmca_id_table,
2355 .driver = {
2356 .name = "ibmmca",
2357 .bus = &mca_bus_type,
2358 .probe = ibmmca_probe,
2359 .remove = __devexit_p(ibmmca_remove),
2360 },
2361};
2362
2363static int __init ibmmca_init(void)
2364{
2365#ifdef MODULE
2366 /* If the driver is run as module, read from conf.modules or cmd-line */
2367 if (boot_options)
2368 option_setup(boot_options);
2369#endif
2370
2371 return mca_register_driver_integrated(&ibmmca_driver, MCA_INTEGSCSI);
2372}
2373
2374static void __exit ibmmca_exit(void)
2375{
2376 mca_unregister_driver(&ibmmca_driver);
2377}
2378
2379module_init(ibmmca_init);
2380module_exit(ibmmca_exit);
diff --git a/drivers/scsi/ibmvscsi/iseries_vscsi.c b/drivers/scsi/ibmvscsi/iseries_vscsi.c
new file mode 100644
index 00000000000..f4776451a75
--- /dev/null
+++ b/drivers/scsi/ibmvscsi/iseries_vscsi.c
@@ -0,0 +1,173 @@
1/* ------------------------------------------------------------
2 * iSeries_vscsi.c
3 * (C) Copyright IBM Corporation 1994, 2003
4 * Authors: Colin DeVilbiss (devilbis@us.ibm.com)
5 * Santiago Leon (santil@us.ibm.com)
6 * Dave Boutcher (sleddog@us.ibm.com)
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
21 * USA
22 *
23 * ------------------------------------------------------------
24 * iSeries-specific functions of the SCSI host adapter for Virtual I/O devices
25 *
26 * This driver allows the Linux SCSI peripheral drivers to directly
27 * access devices in the hosting partition, either on an iSeries
28 * hypervisor system or a converged hypervisor system.
29 */
30
31#include <asm/iseries/vio.h>
32#include <asm/iseries/hv_lp_event.h>
33#include <asm/iseries/hv_types.h>
34#include <asm/iseries/hv_lp_config.h>
35#include <asm/vio.h>
36#include <linux/device.h>
37#include "ibmvscsi.h"
38
39/* global variables */
40static struct ibmvscsi_host_data *single_host_data;
41
42/* ------------------------------------------------------------
43 * Routines for direct interpartition interaction
44 */
45struct srp_lp_event {
46 struct HvLpEvent lpevt; /* 0x00-0x17 */
47 u32 reserved1; /* 0x18-0x1B; unused */
48 u16 version; /* 0x1C-0x1D; unused */
49 u16 subtype_rc; /* 0x1E-0x1F; unused */
50 struct viosrp_crq crq; /* 0x20-0x3F */
51};
52
53/**
54 * standard interface for handling logical partition events.
55 */
56static void iseriesvscsi_handle_event(struct HvLpEvent *lpevt)
57{
58 struct srp_lp_event *evt = (struct srp_lp_event *)lpevt;
59
60 if (!evt) {
61 printk(KERN_ERR "ibmvscsi: received null event\n");
62 return;
63 }
64
65 if (single_host_data == NULL) {
66 printk(KERN_ERR
67 "ibmvscsi: received event, no adapter present\n");
68 return;
69 }
70
71 ibmvscsi_handle_crq(&evt->crq, single_host_data);
72}
73
74/* ------------------------------------------------------------
75 * Routines for driver initialization
76 */
77static int iseriesvscsi_init_crq_queue(struct crq_queue *queue,
78 struct ibmvscsi_host_data *hostdata,
79 int max_requests)
80{
81 int rc;
82
83 single_host_data = hostdata;
84 rc = viopath_open(viopath_hostLp, viomajorsubtype_scsi, max_requests);
85 if (rc < 0) {
86 printk("viopath_open failed with rc %d in open_event_path\n",
87 rc);
88 goto viopath_open_failed;
89 }
90
91 rc = vio_setHandler(viomajorsubtype_scsi, iseriesvscsi_handle_event);
92 if (rc < 0) {
93 printk("vio_setHandler failed with rc %d in open_event_path\n",
94 rc);
95 goto vio_setHandler_failed;
96 }
97 return 0;
98
99 vio_setHandler_failed:
100 viopath_close(viopath_hostLp, viomajorsubtype_scsi, max_requests);
101 viopath_open_failed:
102 return -1;
103}
104
105static void iseriesvscsi_release_crq_queue(struct crq_queue *queue,
106 struct ibmvscsi_host_data *hostdata,
107 int max_requests)
108{
109 vio_clearHandler(viomajorsubtype_scsi);
110 viopath_close(viopath_hostLp, viomajorsubtype_scsi, max_requests);
111}
112
113/**
114 * reset_crq_queue: - resets a crq after a failure
115 * @queue: crq_queue to initialize and register
116 * @hostdata: ibmvscsi_host_data of host
117 *
118 * no-op for iSeries
119 */
120static int iseriesvscsi_reset_crq_queue(struct crq_queue *queue,
121 struct ibmvscsi_host_data *hostdata)
122{
123 return 0;
124}
125
126/**
127 * reenable_crq_queue: - reenables a crq after a failure
128 * @queue: crq_queue to initialize and register
129 * @hostdata: ibmvscsi_host_data of host
130 *
131 * no-op for iSeries
132 */
133static int iseriesvscsi_reenable_crq_queue(struct crq_queue *queue,
134 struct ibmvscsi_host_data *hostdata)
135{
136 return 0;
137}
138
139/**
140 * iseriesvscsi_send_crq: - Send a CRQ
141 * @hostdata: the adapter
142 * @word1: the first 64 bits of the data
143 * @word2: the second 64 bits of the data
144 */
145static int iseriesvscsi_send_crq(struct ibmvscsi_host_data *hostdata,
146 u64 word1, u64 word2)
147{
148 single_host_data = hostdata;
149 return HvCallEvent_signalLpEventFast(viopath_hostLp,
150 HvLpEvent_Type_VirtualIo,
151 viomajorsubtype_scsi,
152 HvLpEvent_AckInd_NoAck,
153 HvLpEvent_AckType_ImmediateAck,
154 viopath_sourceinst(viopath_hostLp),
155 viopath_targetinst(viopath_hostLp),
156 0,
157 VIOVERSION << 16, word1, word2, 0,
158 0);
159}
160
161static int iseriesvscsi_resume(struct ibmvscsi_host_data *hostdata)
162{
163 return 0;
164}
165
166struct ibmvscsi_ops iseriesvscsi_ops = {
167 .init_crq_queue = iseriesvscsi_init_crq_queue,
168 .release_crq_queue = iseriesvscsi_release_crq_queue,
169 .reset_crq_queue = iseriesvscsi_reset_crq_queue,
170 .reenable_crq_queue = iseriesvscsi_reenable_crq_queue,
171 .send_crq = iseriesvscsi_send_crq,
172 .resume = iseriesvscsi_resume,
173};
diff --git a/drivers/scsi/ibmvscsi/rpa_vscsi.c b/drivers/scsi/ibmvscsi/rpa_vscsi.c
new file mode 100644
index 00000000000..f48ae0190d9
--- /dev/null
+++ b/drivers/scsi/ibmvscsi/rpa_vscsi.c
@@ -0,0 +1,368 @@
1/* ------------------------------------------------------------
2 * rpa_vscsi.c
3 * (C) Copyright IBM Corporation 1994, 2003
4 * Authors: Colin DeVilbiss (devilbis@us.ibm.com)
5 * Santiago Leon (santil@us.ibm.com)
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20 * USA
21 *
22 * ------------------------------------------------------------
23 * RPA-specific functions of the SCSI host adapter for Virtual I/O devices
24 *
25 * This driver allows the Linux SCSI peripheral drivers to directly
26 * access devices in the hosting partition, either on an iSeries
27 * hypervisor system or a converged hypervisor system.
28 */
29
30#include <asm/vio.h>
31#include <asm/prom.h>
32#include <asm/iommu.h>
33#include <asm/hvcall.h>
34#include <linux/delay.h>
35#include <linux/dma-mapping.h>
36#include <linux/gfp.h>
37#include <linux/interrupt.h>
38#include "ibmvscsi.h"
39
40static char partition_name[97] = "UNKNOWN";
41static unsigned int partition_number = -1;
42
43/* ------------------------------------------------------------
44 * Routines for managing the command/response queue
45 */
46/**
47 * rpavscsi_handle_event: - Interrupt handler for crq events
48 * @irq: number of irq to handle, not used
49 * @dev_instance: ibmvscsi_host_data of host that received interrupt
50 *
51 * Disables interrupts and schedules srp_task
52 * Always returns IRQ_HANDLED
53 */
54static irqreturn_t rpavscsi_handle_event(int irq, void *dev_instance)
55{
56 struct ibmvscsi_host_data *hostdata =
57 (struct ibmvscsi_host_data *)dev_instance;
58 vio_disable_interrupts(to_vio_dev(hostdata->dev));
59 tasklet_schedule(&hostdata->srp_task);
60 return IRQ_HANDLED;
61}
62
63/**
64 * release_crq_queue: - Deallocates data and unregisters CRQ
65 * @queue: crq_queue to initialize and register
66 * @host_data: ibmvscsi_host_data of host
67 *
68 * Frees irq, deallocates a page for messages, unmaps dma, and unregisters
69 * the crq with the hypervisor.
70 */
71static void rpavscsi_release_crq_queue(struct crq_queue *queue,
72 struct ibmvscsi_host_data *hostdata,
73 int max_requests)
74{
75 long rc = 0;
76 struct vio_dev *vdev = to_vio_dev(hostdata->dev);
77 free_irq(vdev->irq, (void *)hostdata);
78 tasklet_kill(&hostdata->srp_task);
79 do {
80 if (rc)
81 msleep(100);
82 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
83 } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
84 dma_unmap_single(hostdata->dev,
85 queue->msg_token,
86 queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
87 free_page((unsigned long)queue->msgs);
88}
89
90/**
91 * crq_queue_next_crq: - Returns the next entry in message queue
92 * @queue: crq_queue to use
93 *
94 * Returns pointer to next entry in queue, or NULL if there are no new
95 * entried in the CRQ.
96 */
97static struct viosrp_crq *crq_queue_next_crq(struct crq_queue *queue)
98{
99 struct viosrp_crq *crq;
100 unsigned long flags;
101
102 spin_lock_irqsave(&queue->lock, flags);
103 crq = &queue->msgs[queue->cur];
104 if (crq->valid & 0x80) {
105 if (++queue->cur == queue->size)
106 queue->cur = 0;
107 } else
108 crq = NULL;
109 spin_unlock_irqrestore(&queue->lock, flags);
110
111 return crq;
112}
113
114/**
115 * rpavscsi_send_crq: - Send a CRQ
116 * @hostdata: the adapter
117 * @word1: the first 64 bits of the data
118 * @word2: the second 64 bits of the data
119 */
120static int rpavscsi_send_crq(struct ibmvscsi_host_data *hostdata,
121 u64 word1, u64 word2)
122{
123 struct vio_dev *vdev = to_vio_dev(hostdata->dev);
124
125 return plpar_hcall_norets(H_SEND_CRQ, vdev->unit_address, word1, word2);
126}
127
128/**
129 * rpavscsi_task: - Process srps asynchronously
130 * @data: ibmvscsi_host_data of host
131 */
132static void rpavscsi_task(void *data)
133{
134 struct ibmvscsi_host_data *hostdata = (struct ibmvscsi_host_data *)data;
135 struct vio_dev *vdev = to_vio_dev(hostdata->dev);
136 struct viosrp_crq *crq;
137 int done = 0;
138
139 while (!done) {
140 /* Pull all the valid messages off the CRQ */
141 while ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
142 ibmvscsi_handle_crq(crq, hostdata);
143 crq->valid = 0x00;
144 }
145
146 vio_enable_interrupts(vdev);
147 if ((crq = crq_queue_next_crq(&hostdata->queue)) != NULL) {
148 vio_disable_interrupts(vdev);
149 ibmvscsi_handle_crq(crq, hostdata);
150 crq->valid = 0x00;
151 } else {
152 done = 1;
153 }
154 }
155}
156
157static void gather_partition_info(void)
158{
159 struct device_node *rootdn;
160
161 const char *ppartition_name;
162 const unsigned int *p_number_ptr;
163
164 /* Retrieve information about this partition */
165 rootdn = of_find_node_by_path("/");
166 if (!rootdn) {
167 return;
168 }
169
170 ppartition_name = of_get_property(rootdn, "ibm,partition-name", NULL);
171 if (ppartition_name)
172 strncpy(partition_name, ppartition_name,
173 sizeof(partition_name));
174 p_number_ptr = of_get_property(rootdn, "ibm,partition-no", NULL);
175 if (p_number_ptr)
176 partition_number = *p_number_ptr;
177 of_node_put(rootdn);
178}
179
180static void set_adapter_info(struct ibmvscsi_host_data *hostdata)
181{
182 memset(&hostdata->madapter_info, 0x00,
183 sizeof(hostdata->madapter_info));
184
185 dev_info(hostdata->dev, "SRP_VERSION: %s\n", SRP_VERSION);
186 strcpy(hostdata->madapter_info.srp_version, SRP_VERSION);
187
188 strncpy(hostdata->madapter_info.partition_name, partition_name,
189 sizeof(hostdata->madapter_info.partition_name));
190
191 hostdata->madapter_info.partition_number = partition_number;
192
193 hostdata->madapter_info.mad_version = 1;
194 hostdata->madapter_info.os_type = 2;
195}
196
197/**
198 * reset_crq_queue: - resets a crq after a failure
199 * @queue: crq_queue to initialize and register
200 * @hostdata: ibmvscsi_host_data of host
201 *
202 */
203static int rpavscsi_reset_crq_queue(struct crq_queue *queue,
204 struct ibmvscsi_host_data *hostdata)
205{
206 int rc = 0;
207 struct vio_dev *vdev = to_vio_dev(hostdata->dev);
208
209 /* Close the CRQ */
210 do {
211 if (rc)
212 msleep(100);
213 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
214 } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
215
216 /* Clean out the queue */
217 memset(queue->msgs, 0x00, PAGE_SIZE);
218 queue->cur = 0;
219
220 set_adapter_info(hostdata);
221
222 /* And re-open it again */
223 rc = plpar_hcall_norets(H_REG_CRQ,
224 vdev->unit_address,
225 queue->msg_token, PAGE_SIZE);
226 if (rc == 2) {
227 /* Adapter is good, but other end is not ready */
228 dev_warn(hostdata->dev, "Partner adapter not ready\n");
229 } else if (rc != 0) {
230 dev_warn(hostdata->dev, "couldn't register crq--rc 0x%x\n", rc);
231 }
232 return rc;
233}
234
235/**
236 * initialize_crq_queue: - Initializes and registers CRQ with hypervisor
237 * @queue: crq_queue to initialize and register
238 * @hostdata: ibmvscsi_host_data of host
239 *
240 * Allocates a page for messages, maps it for dma, and registers
241 * the crq with the hypervisor.
242 * Returns zero on success.
243 */
244static int rpavscsi_init_crq_queue(struct crq_queue *queue,
245 struct ibmvscsi_host_data *hostdata,
246 int max_requests)
247{
248 int rc;
249 int retrc;
250 struct vio_dev *vdev = to_vio_dev(hostdata->dev);
251
252 queue->msgs = (struct viosrp_crq *)get_zeroed_page(GFP_KERNEL);
253
254 if (!queue->msgs)
255 goto malloc_failed;
256 queue->size = PAGE_SIZE / sizeof(*queue->msgs);
257
258 queue->msg_token = dma_map_single(hostdata->dev, queue->msgs,
259 queue->size * sizeof(*queue->msgs),
260 DMA_BIDIRECTIONAL);
261
262 if (dma_mapping_error(hostdata->dev, queue->msg_token))
263 goto map_failed;
264
265 gather_partition_info();
266 set_adapter_info(hostdata);
267
268 retrc = rc = plpar_hcall_norets(H_REG_CRQ,
269 vdev->unit_address,
270 queue->msg_token, PAGE_SIZE);
271 if (rc == H_RESOURCE)
272 /* maybe kexecing and resource is busy. try a reset */
273 rc = rpavscsi_reset_crq_queue(queue,
274 hostdata);
275
276 if (rc == 2) {
277 /* Adapter is good, but other end is not ready */
278 dev_warn(hostdata->dev, "Partner adapter not ready\n");
279 retrc = 0;
280 } else if (rc != 0) {
281 dev_warn(hostdata->dev, "Error %d opening adapter\n", rc);
282 goto reg_crq_failed;
283 }
284
285 queue->cur = 0;
286 spin_lock_init(&queue->lock);
287
288 tasklet_init(&hostdata->srp_task, (void *)rpavscsi_task,
289 (unsigned long)hostdata);
290
291 if (request_irq(vdev->irq,
292 rpavscsi_handle_event,
293 0, "ibmvscsi", (void *)hostdata) != 0) {
294 dev_err(hostdata->dev, "couldn't register irq 0x%x\n",
295 vdev->irq);
296 goto req_irq_failed;
297 }
298
299 rc = vio_enable_interrupts(vdev);
300 if (rc != 0) {
301 dev_err(hostdata->dev, "Error %d enabling interrupts!!!\n", rc);
302 goto req_irq_failed;
303 }
304
305 return retrc;
306
307 req_irq_failed:
308 tasklet_kill(&hostdata->srp_task);
309 rc = 0;
310 do {
311 if (rc)
312 msleep(100);
313 rc = plpar_hcall_norets(H_FREE_CRQ, vdev->unit_address);
314 } while ((rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
315 reg_crq_failed:
316 dma_unmap_single(hostdata->dev,
317 queue->msg_token,
318 queue->size * sizeof(*queue->msgs), DMA_BIDIRECTIONAL);
319 map_failed:
320 free_page((unsigned long)queue->msgs);
321 malloc_failed:
322 return -1;
323}
324
325/**
326 * reenable_crq_queue: - reenables a crq after
327 * @queue: crq_queue to initialize and register
328 * @hostdata: ibmvscsi_host_data of host
329 *
330 */
331static int rpavscsi_reenable_crq_queue(struct crq_queue *queue,
332 struct ibmvscsi_host_data *hostdata)
333{
334 int rc = 0;
335 struct vio_dev *vdev = to_vio_dev(hostdata->dev);
336
337 /* Re-enable the CRQ */
338 do {
339 if (rc)
340 msleep(100);
341 rc = plpar_hcall_norets(H_ENABLE_CRQ, vdev->unit_address);
342 } while ((rc == H_IN_PROGRESS) || (rc == H_BUSY) || (H_IS_LONG_BUSY(rc)));
343
344 if (rc)
345 dev_err(hostdata->dev, "Error %d enabling adapter\n", rc);
346 return rc;
347}
348
349/**
350 * rpavscsi_resume: - resume after suspend
351 * @hostdata: ibmvscsi_host_data of host
352 *
353 */
354static int rpavscsi_resume(struct ibmvscsi_host_data *hostdata)
355{
356 vio_disable_interrupts(to_vio_dev(hostdata->dev));
357 tasklet_schedule(&hostdata->srp_task);
358 return 0;
359}
360
361struct ibmvscsi_ops rpavscsi_ops = {
362 .init_crq_queue = rpavscsi_init_crq_queue,
363 .release_crq_queue = rpavscsi_release_crq_queue,
364 .reset_crq_queue = rpavscsi_reset_crq_queue,
365 .reenable_crq_queue = rpavscsi_reenable_crq_queue,
366 .send_crq = rpavscsi_send_crq,
367 .resume = rpavscsi_resume,
368};
diff --git a/drivers/scsi/isci/firmware/Makefile b/drivers/scsi/isci/firmware/Makefile
new file mode 100644
index 00000000000..5f54461cabc
--- /dev/null
+++ b/drivers/scsi/isci/firmware/Makefile
@@ -0,0 +1,19 @@
1# Makefile for create_fw
2#
3CC=gcc
4CFLAGS=-c -Wall -O2 -g
5LDFLAGS=
6SOURCES=create_fw.c
7OBJECTS=$(SOURCES:.cpp=.o)
8EXECUTABLE=create_fw
9
10all: $(SOURCES) $(EXECUTABLE)
11
12$(EXECUTABLE): $(OBJECTS)
13 $(CC) $(LDFLAGS) $(OBJECTS) -o $@
14
15.c.o:
16 $(CC) $(CFLAGS) $< -O $@
17
18clean:
19 rm -f *.o $(EXECUTABLE)
diff --git a/drivers/scsi/isci/firmware/README b/drivers/scsi/isci/firmware/README
new file mode 100644
index 00000000000..8056d2bd233
--- /dev/null
+++ b/drivers/scsi/isci/firmware/README
@@ -0,0 +1,36 @@
1This defines the temporary binary blow we are to pass to the SCU
2driver to emulate the binary firmware that we will eventually be
3able to access via NVRAM on the SCU controller.
4
5The current size of the binary blob is expected to be 149 bytes or larger
6
7Header Types:
80x1: Phy Masks
90x2: Phy Gens
100x3: SAS Addrs
110xff: End of Data
12
13ID string - u8[12]: "#SCU MAGIC#\0"
14Version - u8: 1
15SubVersion - u8: 0
16
17Header Type - u8: 0x1
18Size - u8: 8
19Phy Mask - u32[8]
20
21Header Type - u8: 0x2
22Size - u8: 8
23Phy Gen - u32[8]
24
25Header Type - u8: 0x3
26Size - u8: 8
27Sas Addr - u64[8]
28
29Header Type - u8: 0xf
30
31
32==============================================================================
33
34Place isci_firmware.bin in /lib/firmware
35Be sure to recreate the initramfs image to include the firmware.
36
diff --git a/drivers/scsi/isci/firmware/create_fw.c b/drivers/scsi/isci/firmware/create_fw.c
new file mode 100644
index 00000000000..c7a2887a7e9
--- /dev/null
+++ b/drivers/scsi/isci/firmware/create_fw.c
@@ -0,0 +1,99 @@
1#include <stdio.h>
2#include <stdlib.h>
3#include <unistd.h>
4#include <sys/types.h>
5#include <sys/stat.h>
6#include <fcntl.h>
7#include <string.h>
8#include <errno.h>
9#include <asm/types.h>
10#include <strings.h>
11#include <stdint.h>
12
13#include "create_fw.h"
14#include "../probe_roms.h"
15
16int write_blob(struct isci_orom *isci_orom)
17{
18 FILE *fd;
19 int err;
20 size_t count;
21
22 fd = fopen(blob_name, "w+");
23 if (!fd) {
24 perror("Open file for write failed");
25 fclose(fd);
26 return -EIO;
27 }
28
29 count = fwrite(isci_orom, sizeof(struct isci_orom), 1, fd);
30 if (count != 1) {
31 perror("Write data failed");
32 fclose(fd);
33 return -EIO;
34 }
35
36 fclose(fd);
37
38 return 0;
39}
40
41void set_binary_values(struct isci_orom *isci_orom)
42{
43 int ctrl_idx, phy_idx, port_idx;
44
45 /* setting OROM signature */
46 strncpy(isci_orom->hdr.signature, sig, strlen(sig));
47 isci_orom->hdr.version = version;
48 isci_orom->hdr.total_block_length = sizeof(struct isci_orom);
49 isci_orom->hdr.hdr_length = sizeof(struct sci_bios_oem_param_block_hdr);
50 isci_orom->hdr.num_elements = num_elements;
51
52 for (ctrl_idx = 0; ctrl_idx < 2; ctrl_idx++) {
53 isci_orom->ctrl[ctrl_idx].controller.mode_type = mode_type;
54 isci_orom->ctrl[ctrl_idx].controller.max_concurrent_dev_spin_up =
55 max_num_concurrent_dev_spin_up;
56 isci_orom->ctrl[ctrl_idx].controller.do_enable_ssc =
57 enable_ssc;
58
59 for (port_idx = 0; port_idx < 4; port_idx++)
60 isci_orom->ctrl[ctrl_idx].ports[port_idx].phy_mask =
61 phy_mask[ctrl_idx][port_idx];
62
63 for (phy_idx = 0; phy_idx < 4; phy_idx++) {
64 isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.high =
65 (__u32)(sas_addr[ctrl_idx][phy_idx] >> 32);
66 isci_orom->ctrl[ctrl_idx].phys[phy_idx].sas_address.low =
67 (__u32)(sas_addr[ctrl_idx][phy_idx]);
68
69 isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control0 =
70 afe_tx_amp_control0;
71 isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control1 =
72 afe_tx_amp_control1;
73 isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control2 =
74 afe_tx_amp_control2;
75 isci_orom->ctrl[ctrl_idx].phys[phy_idx].afe_tx_amp_control3 =
76 afe_tx_amp_control3;
77 }
78 }
79}
80
81int main(void)
82{
83 int err;
84 struct isci_orom *isci_orom;
85
86 isci_orom = malloc(sizeof(struct isci_orom));
87 memset(isci_orom, 0, sizeof(struct isci_orom));
88
89 set_binary_values(isci_orom);
90
91 err = write_blob(isci_orom);
92 if (err < 0) {
93 free(isci_orom);
94 return err;
95 }
96
97 free(isci_orom);
98 return 0;
99}
diff --git a/drivers/scsi/isci/firmware/create_fw.h b/drivers/scsi/isci/firmware/create_fw.h
new file mode 100644
index 00000000000..5f298828d22
--- /dev/null
+++ b/drivers/scsi/isci/firmware/create_fw.h
@@ -0,0 +1,77 @@
1#ifndef _CREATE_FW_H_
2#define _CREATE_FW_H_
3#include "../probe_roms.h"
4
5
6/* we are configuring for 2 SCUs */
7static const int num_elements = 2;
8
9/*
10 * For all defined arrays:
11 * elements 0-3 are for SCU0, ports 0-3
12 * elements 4-7 are for SCU1, ports 0-3
13 *
14 * valid configurations for one SCU are:
15 * P0 P1 P2 P3
16 * ----------------
17 * 0xF,0x0,0x0,0x0 # 1 x4 port
18 * 0x3,0x0,0x4,0x8 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are each x1
19 * # ports
20 * 0x1,0x2,0xC,0x0 # Phys 0 and 1 are each x1 ports, phy 2 and phy 3 are a x2
21 * # port
22 * 0x3,0x0,0xC,0x0 # Phys 0 and 1 are a x2 port, phy 2 and phy 3 are a x2 port
23 * 0x1,0x2,0x4,0x8 # Each phy is a x1 port (this is the default configuration)
24 *
25 * if there is a port/phy on which you do not wish to override the default
26 * values, use the value assigned to UNINIT_PARAM (255).
27 */
28
29/* discovery mode type (port auto config mode by default ) */
30
31/*
32 * if there is a port/phy on which you do not wish to override the default
33 * values, use the value "0000000000000000". SAS address of zero's is
34 * considered invalid and will not be used.
35 */
36#ifdef MPC
37static const int mode_type = SCIC_PORT_MANUAL_CONFIGURATION_MODE;
38static const __u8 phy_mask[2][4] = { {1, 2, 4, 8},
39 {1, 2, 4, 8} };
40static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFFF0000001ULL,
41 0x5FCFFFFFF0000002ULL,
42 0x5FCFFFFFF0000003ULL,
43 0x5FCFFFFFF0000004ULL },
44 { 0x5FCFFFFFF0000005ULL,
45 0x5FCFFFFFF0000006ULL,
46 0x5FCFFFFFF0000007ULL,
47 0x5FCFFFFFF0000008ULL } };
48#else /* APC (default) */
49static const int mode_type = SCIC_PORT_AUTOMATIC_CONFIGURATION_MODE;
50static const __u8 phy_mask[2][4];
51static const unsigned long long sas_addr[2][4] = { { 0x5FCFFFFF00000001ULL,
52 0x5FCFFFFF00000001ULL,
53 0x5FCFFFFF00000001ULL,
54 0x5FCFFFFF00000001ULL },
55 { 0x5FCFFFFF00000002ULL,
56 0x5FCFFFFF00000002ULL,
57 0x5FCFFFFF00000002ULL,
58 0x5FCFFFFF00000002ULL } };
59#endif
60
61/* Maximum number of concurrent device spin up */
62static const int max_num_concurrent_dev_spin_up = 1;
63
64/* enable of ssc operation */
65static const int enable_ssc;
66
67/* AFE_TX_AMP_CONTROL */
68static const unsigned int afe_tx_amp_control0 = 0x000bdd08;
69static const unsigned int afe_tx_amp_control1 = 0x000ffc00;
70static const unsigned int afe_tx_amp_control2 = 0x000b7c09;
71static const unsigned int afe_tx_amp_control3 = 0x000afc6e;
72
73static const char blob_name[] = "isci_firmware.bin";
74static const char sig[] = "ISCUOEMB";
75static const unsigned char version = 0x10;
76
77#endif
diff --git a/drivers/scsi/scsi_wait_scan.c b/drivers/scsi/scsi_wait_scan.c
new file mode 100644
index 00000000000..74708fcaf82
--- /dev/null
+++ b/drivers/scsi/scsi_wait_scan.c
@@ -0,0 +1,42 @@
1/*
2 * scsi_wait_scan.c
3 *
4 * Copyright (C) 2006 James Bottomley <James.Bottomley@SteelEye.com>
5 *
6 * This is a simple module to wait until all the async scans are
7 * complete. The idea is to use it in initrd/initramfs scripts. You
8 * modprobe it after all the modprobes of the root SCSI drivers and it
9 * will wait until they have all finished scanning their busses before
10 * allowing the boot to proceed
11 */
12
13#include <linux/module.h>
14#include <linux/device.h>
15#include <scsi/scsi_scan.h>
16
17static int __init wait_scan_init(void)
18{
19 /*
20 * First we need to wait for device probing to finish;
21 * the drivers we just loaded might just still be probing
22 * and might not yet have reached the scsi async scanning
23 */
24 wait_for_device_probe();
25 /*
26 * and then we wait for the actual asynchronous scsi scan
27 * to finish.
28 */
29 scsi_complete_async_scans();
30 return 0;
31}
32
33static void __exit wait_scan_exit(void)
34{
35}
36
37MODULE_DESCRIPTION("SCSI wait for scans");
38MODULE_AUTHOR("James Bottomley");
39MODULE_LICENSE("GPL");
40
41late_initcall(wait_scan_init);
42module_exit(wait_scan_exit);
generated by cgit v1.2.2 (git 2.25.0) at 2025-08-19 21:15:29 -0400