1 /* fd_mcs.c -- Future Domain MCS 600/700 (or IBM OEM) driver
3 * FutureDomain MCS-600/700 v0.2 03/11/1998 by ZP Gu (zpg@castle.net)
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
10 * This driver also supports Reply SB16/SCSI card (the SCSI part).
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.
17 * Assumptions: TMC-1800/18C50/18C30, BIOS >= 3.4
19 * LILO command-line options:
20 * fd_mcs=<FIFO_COUNT>[,<FIFO_SIZE>]
22 * ********************************************************
23 * Please see Copyrights/Comments in fdomain.* for credits.
24 * Following is from fdomain.c for acknowledgement:
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
31 * $Id: fd_mcs.c,v 1.1.1.1 2005/04/11 02:50:36 jack Exp $
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
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.
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.
47 **************************************************************************
49 NOTES ON USER DEFINABLE OPTIONS:
51 DEBUG: This turns on the printing of various debug information.
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.
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*****]
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.
78 **************************************************************************/
80 #include <linux/module.h>
82 #include <linux/sched.h>
83 #include <linux/blk.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>
92 #include <asm/system.h>
98 #define DRIVER_VERSION "v0.2 by ZP Gu<zpg@castle.net>"
100 /* START OF USER DEFINABLE OPTIONS */
102 #define DEBUG 0 /* Enable debugging output */
103 #define ENABLE_PARITY 1 /* Enable SCSI Parity */
104 #define DO_DETECT 0 /* Do device detection here (see scsi.c) */
106 /* END OF USER DEFINABLE OPTIONS */
109 #define EVERY_ACCESS 0 /* Write a line on every scsi access */
110 #define ERRORS_ONLY 1 /* Only write a line if there is an error */
111 #define DEBUG_DETECT 1 /* Debug fd_mcs_detect() */
112 #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
113 #define DEBUG_ABORT 1 /* Debug abort() routine */
114 #define DEBUG_RESET 1 /* Debug reset() routine */
115 #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
117 #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
118 #define ERRORS_ONLY 0
119 #define DEBUG_DETECT 0
120 #define DEBUG_MESSAGES 0
121 #define DEBUG_ABORT 0
122 #define DEBUG_RESET 0
126 /* Errors are reported on the line, so we don't need to report them again */
129 #define ERRORS_ONLY 0
133 #define PARITY_MASK 0x08
135 #define PARITY_MASK 0x00
146 in_arbitration = 0x02,
158 FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
159 Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
164 Interrupt_Status = 9,
166 Configuration2 = 11, /* tmc18c50/tmc18c30 only */
177 Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
179 IO_Control = 11, /* tmc18c30 only */
184 unsigned long _bios_base;
187 volatile int _in_command;
188 Scsi_Cmnd *_current_SC;
189 enum chip_type _chip;
191 int _fifo_count; /* Number of 512 byte blocks before INTR */
193 char _adapter_name[64];
195 volatile int _in_interrupt_flag;
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;
204 int _Read_SCSI_Data_port;
206 int _SCSI_Data_NoACK_port;
207 int _SCSI_Status_port;
209 int _TMC_Status_port;
210 int _Write_FIFO_port;
211 int _Write_SCSI_Data_port;
213 int _FIFO_Size; /* = 0x2000; 8k FIFO for
214 pre-tmc18c30 chips */
221 #define FD_MAX_HOSTS 3 /* enough? */
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)
234 #define in_interrupt_flag (HOSTDATA(shpnt)->_in_interrupt_flag)
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)
255 struct fd_mcs_adapters_struct {
258 enum chip_type fd_chip;
263 #define REPLY_ID 0x5137
265 static struct fd_mcs_adapters_struct fd_mcs_adapters[] = {
266 { "Future Domain SCSI Adapter MCS-700(18C50)",
271 { "Future Domain SCSI Adapter MCS-600/700(TMC-1800)",
276 { "Reply Sound Blaster/SCSI Adapter",
283 #define FD_BRDS sizeof(fd_mcs_adapters)/sizeof(struct fd_mcs_adapters_struct)
285 static void fd_mcs_intr( int irq, void *dev_id, struct pt_regs * regs );
287 static unsigned long addresses[] = {0xc8000, 0xca000, 0xce000, 0xde000};
288 static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
289 static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
291 /* host information */
292 static int found = 0;
293 static struct Scsi_Host *hosts[FD_MAX_HOSTS+1] = { NULL };
295 static int user_fifo_count = 0;
296 static int user_fifo_size = 0;
298 void fd_mcs_setup( char *str, int *ints )
300 static int done_setup = 0;
302 if (done_setup++ || ints[0] < 1 || ints[0] > 2 ||
303 ints[1] < 1 || ints[1] > 16) {
304 printk( "fd_mcs: usage: fd_mcs=FIFO_COUNT, FIFO_SIZE\n" );
307 user_fifo_count = ints[0] >= 1 ? ints[1] : 0;
308 user_fifo_size = ints[0] >= 2 ? ints[2] : 0;
311 static void print_banner( struct Scsi_Host *shpnt )
313 printk( "scsi%d <fd_mcs>: ", shpnt->host_no);
316 printk( "BIOS at 0x%lX", bios_base);
321 printk( ", HostID %d, %s Chip, IRQ %d, IO 0x%lX\n",
323 chip == tmc18c50 ? "TMC-18C50"
324 : (chip == tmc18c30 ? "TMC-18C30" :
325 (chip == tmc1800 ? "TMC-1800" : "Unknown")),
331 static void do_pause( unsigned amount ) /* Pause for amount*10 milliseconds */
338 inline static void fd_mcs_make_bus_idle( struct Scsi_Host *shpnt )
340 outb( 0, SCSI_Cntl_port );
341 outb( 0, SCSI_Mode_Cntl_port );
342 if (chip == tmc18c50 || chip == tmc18c30)
343 outb( 0x21 | PARITY_MASK, TMC_Cntl_port ); /* Clear forced intr. */
345 outb( 0x01 | PARITY_MASK, TMC_Cntl_port );
348 int fd_mcs_detect( Scsi_Host_Template *tpnt )
351 struct Scsi_Host *shpnt;
353 /* get id, port, bios, irq */
355 u_char pos2, pos3, pos4;
359 /* if not MCA machine, return */
366 for( loop = 0; loop < FD_BRDS; loop++ ) {
368 while ( MCA_NOTFOUND !=
369 (slot = mca_find_adapter(fd_mcs_adapters[loop].id,
372 /* if we get this far, an adapter has been detected and is
375 printk("scsi <fd_mcs>: %s at slot %d\n",
376 fd_mcs_adapters[loop].name, slot + 1 );
378 pos2 = mca_read_stored_pos( slot, 2 );
379 pos3 = mca_read_stored_pos( slot, 3 );
380 pos4 = mca_read_stored_pos( slot, 4);
382 /* ready for next probe */
385 if (fd_mcs_adapters[loop].id == REPLY_ID) { /* reply card */
386 static int reply_irq[] = {10, 11, 14, 15};
388 bios = 0; /* no bios */
391 port = ports[pos4 & 0x3];
395 /* can't really disable it, same as irq=10 */
396 irq = reply_irq[((pos4 >> 2) & 0x1) + 2*((pos4 >> 4) & 0x1)];
398 bios = addresses[pos2 >> 6];
399 port = ports[(pos2 >> 4) & 0x03];
400 irq = ints[(pos2 >> 1) & 0x07];
405 mca_set_adapter_name( slot-1, fd_mcs_adapters[loop].name );
407 /* check irq/region */
408 if (check_region(port, 0x10) ||
409 request_irq(irq, fd_mcs_intr,
410 SA_SHIRQ, "fd_mcs", hosts)) {
411 printk( "fd_mcs: check_region() || request_irq() failed, Skip it\n");
417 if (!(shpnt = scsi_register(tpnt, sizeof(struct fd_hostdata)))) {
418 printk( "fd_mcs: scsi_register() failed\n");
422 /* request I/O region */
423 request_region( port, 0x10, "fd_mcs" );
426 strcpy(adapter_name, fd_mcs_adapters[loop].name);
429 chip = fd_mcs_adapters[loop].fd_chip;
430 /* use boot time value if available */
432 user_fifo_count?user_fifo_count:fd_mcs_adapters[loop].fifo_count;
434 user_fifo_size?user_fifo_size:fd_mcs_adapters[loop].fifo_size;
437 /* *************************************************** */
438 /* Try to toggle 32-bit mode. This only
439 works on an 18c30 chip. (User reports
440 say this works, so we should switch to
441 it in the near future.) */
442 outb( 0x80, port + IO_Control );
443 if ((inb( port + Configuration2 ) & 0x80) == 0x80) {
444 outb( 0x00, port + IO_Control );
445 if ((inb( port + Configuration2 ) & 0x80) == 0x00) {
447 FIFO_Size = 0x800; /* 2k FIFO */
449 printk("FIRST: chip=%s, fifo_size=0x%x\n",
450 (chip == tmc18c30)?"tmc18c30":"tmc18c50", FIFO_Size);
454 /* That should have worked, but appears to
455 have problems. Let's assume it is an
456 18c30 if the RAM is disabled. */
458 if (inb( port + Configuration2 ) & 0x02) {
460 FIFO_Size = 0x800; /* 2k FIFO */
462 printk("SECOND: chip=%s, fifo_size=0x%x\n",
463 (chip == tmc18c30)?"tmc18c30":"tmc18c50", FIFO_Size);
465 /* *************************************************** */
468 /* IBM/ANSI scsi scan ordering */
469 /* Stick this back in when the scsi.c changes are there */
470 shpnt->reverse_ordering = 1;
474 hosts[found++] = shpnt;
478 shpnt->io_port = port;
479 shpnt->n_io_port = 0x10;
483 adapter_mask = (1 << id);
486 SCSI_Mode_Cntl_port = port + SCSI_Mode_Cntl;
487 FIFO_Data_Count_port = port + FIFO_Data_Count;
488 Interrupt_Cntl_port = port + Interrupt_Cntl;
489 Interrupt_Status_port = port + Interrupt_Status;
490 Interrupt_Cond_port = port + Interrupt_Cond;
491 Read_FIFO_port = port + Read_FIFO;
492 Read_SCSI_Data_port = port + Read_SCSI_Data;
493 SCSI_Cntl_port = port + SCSI_Cntl;
494 SCSI_Data_NoACK_port = port + SCSI_Data_NoACK;
495 SCSI_Status_port = port + SCSI_Status;
496 TMC_Cntl_port = port + TMC_Cntl;
497 TMC_Status_port = port + TMC_Status;
498 Write_FIFO_port = port + Write_FIFO;
499 Write_SCSI_Data_port = port + Write_SCSI_Data;
506 print_banner( shpnt );
509 outb( 1, SCSI_Cntl_port );
511 outb( 0, SCSI_Cntl_port );
513 outb( 0, SCSI_Mode_Cntl_port );
514 outb( PARITY_MASK, TMC_Cntl_port );
518 /* scan devices attached */
520 const int buflen = 255;
523 unsigned char do_inquiry[] = { INQUIRY, 0, 0, 0, buflen, 0 };
524 unsigned char do_request_sense[] = { REQUEST_SENSE,
525 0, 0, 0, buflen, 0 };
526 unsigned char do_read_capacity[] = { READ_CAPACITY,
527 0, 0, 0, 0, 0, 0, 0, 0, 0 };
528 unsigned char buf[buflen];
530 SCinit.request_buffer = SCinit.buffer = buf;
531 SCinit.request_bufflen = SCinit.bufflen = sizeof(buf)-1;
536 printk( "fd_mcs: detection routine scanning for devices:\n" );
537 for (i = 0; i < 8; i++) {
538 if (i == shpnt->this_id) /* Skip host adapter */
541 memcpy(SCinit.cmnd, do_request_sense,
542 sizeof(do_request_sense));
543 retcode = fd_mcs_command(&SCinit);
545 memcpy(SCinit.cmnd, do_inquiry, sizeof(do_inquiry));
546 retcode = fd_mcs_command(&SCinit);
548 printk( " SCSI ID %d: ", i );
549 for (j = 8; j < (buf[4] < 32 ? buf[4] : 32); j++)
550 printk( "%c", buf[j] >= 20 ? buf[j] : ' ' );
551 memcpy(SCinit.cmnd, do_read_capacity,
552 sizeof(do_read_capacity));
553 retcode = fd_mcs_command(&SCinit);
555 unsigned long blocks, size, capacity;
557 blocks = (buf[0] << 24) | (buf[1] << 16)
558 | (buf[2] << 8) | buf[3];
559 size = (buf[4] << 24) | (buf[5] << 16) |
560 (buf[6] << 8) | buf[7];
561 capacity = +( +(blocks / 1024L) * +(size * 10L)) / 1024L;
563 printk( "%lu MB (%lu byte blocks)\n",
564 ((capacity + 5L) / 10L), size );
574 if (found == FD_MAX_HOSTS) {
575 printk( "fd_mcs: detecting reached max=%d host adapters.\n",
584 const char *fd_mcs_info(struct Scsi_Host *shpnt)
589 static int TOTAL_INTR = 0;
592 * inout : decides on the direction of the dataflow and the meaning of the
594 * buffer: If inout==FALSE data is being written to it else read from it
595 * *start: If inout==FALSE start of the valid data in the buffer
596 * offset: If inout==FALSE offset from the beginning of the imaginary file
597 * from which we start writing into the buffer
598 * length: If inout==FALSE max number of bytes to be written into the buffer
599 * else number of bytes in the buffer
601 int fd_mcs_proc_info( char *buffer, char **start, off_t offset,
602 int length, int hostno, int inout )
604 struct Scsi_Host *shpnt;
611 *start = buffer + offset;
613 for (i = 0; hosts[i] && hosts[i]->host_no != hostno; i++);
619 len += sprintf(buffer+len, "Future Domain MCS-600/700 Driver %s\n",
622 len += sprintf(buffer+len, "HOST #%d: %s\n",
623 hostno, adapter_name);
625 len += sprintf(buffer+len, "FIFO Size=0x%x, FIFO Count=%d\n",
626 FIFO_Size, FIFO_COUNT);
628 len += sprintf(buffer+len, "DriverCalls=%d, Interrupts=%d, BytesRead=%d, BytesWrite=%d\n\n",
629 TOTAL_INTR, INTR_Processed, Bytes_Read, Bytes_Written);
632 if ((len -= offset) <= 0)
639 static int fd_mcs_select(struct Scsi_Host *shpnt, int target )
642 unsigned long timeout;
644 outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */
645 outb( adapter_mask | (1 << target), SCSI_Data_NoACK_port );
647 /* Stop arbitration and enable parity */
648 outb( PARITY_MASK, TMC_Cntl_port );
650 timeout = 350; /* 350mS -- because of timeouts
654 status = inb( SCSI_Status_port ); /* Read adapter status */
655 if (status & 1) { /* Busy asserted */
656 /* Enable SCSI Bus (on error, should make bus idle with 0) */
657 outb( 0x80, SCSI_Cntl_port );
660 udelay(1000); /* wait one msec */
664 fd_mcs_make_bus_idle(shpnt);
666 if (!target) printk( "Selection failed\n" );
672 if (!flag) /* Skip first failure for all chips. */
675 printk( "fd_mcs: Selection failed\n" );
681 static void my_done( struct Scsi_Host *shpnt, int error )
685 outb( 0x00, Interrupt_Cntl_port );
686 fd_mcs_make_bus_idle(shpnt);
687 current_SC->result = error;
688 current_SC->scsi_done( current_SC );
690 panic( "fd_mcs: my_done() called outside of command\n" );
693 in_interrupt_flag = 0;
697 /* only my_done needs to be protected */
698 static void fd_mcs_intr( int irq, void *dev_id, struct pt_regs * regs )
703 unsigned data_count, tmp_count;
706 struct Scsi_Host *shpnt;
710 /* search for one adapter-response on shared interrupt */
711 while ((shpnt = hosts[i++])) {
712 if ((inb(TMC_Status_port)) & 1)
716 /* return if some other device on this IRQ caused the interrupt */
723 outb( 0x00, Interrupt_Cntl_port );
725 /* Abort calls my_done, so we do nothing here. */
726 if (current_SC->SCp.phase & aborted) {
728 printk( "Interrupt after abort, ignoring\n" );
737 if (current_SC->SCp.phase & in_arbitration) {
738 status = inb( TMC_Status_port ); /* Read adapter status */
739 if (!(status & 0x02)) {
743 spin_lock_irqsave(&io_request_lock, flags);
744 my_done( shpnt, DID_BUS_BUSY << 16 );
745 spin_unlock_irqrestore(&io_request_lock, flags);
748 current_SC->SCp.phase = in_selection;
750 outb( 0x40 | FIFO_COUNT, Interrupt_Cntl_port );
752 outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */
753 outb( adapter_mask | (1 << current_SC->target), SCSI_Data_NoACK_port );
755 /* Stop arbitration and enable parity */
756 outb( 0x10 | PARITY_MASK, TMC_Cntl_port );
758 in_interrupt_flag = 0;
761 } else if (current_SC->SCp.phase & in_selection) {
762 status = inb( SCSI_Status_port );
763 if (!(status & 0x01)) {
764 /* Try again, for slow devices */
765 if (fd_mcs_select(shpnt, current_SC->target )) {
769 spin_lock_irqsave(&io_request_lock, flags);
770 my_done( shpnt, DID_NO_CONNECT << 16 );
771 spin_unlock_irqrestore(&io_request_lock, flags);
775 printk( " AltSel " );
777 /* Stop arbitration and enable parity */
778 outb( 0x10 | PARITY_MASK, TMC_Cntl_port );
781 current_SC->SCp.phase = in_other;
782 outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port );
783 outb( 0x80, SCSI_Cntl_port );
785 in_interrupt_flag = 0;
790 /* current_SC->SCp.phase == in_other: this is the body of the routine */
792 status = inb( SCSI_Status_port );
794 if (status & 0x10) { /* REQ */
796 switch (status & 0x0e) {
798 case 0x08: /* COMMAND OUT */
799 outb( current_SC->cmnd[current_SC->SCp.sent_command++],
800 Write_SCSI_Data_port );
803 current_SC->cmnd[ current_SC->SCp.sent_command - 1] );
806 case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
807 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
808 current_SC->SCp.have_data_in = -1;
809 outb( 0xd0 | PARITY_MASK, TMC_Cntl_port );
812 case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
813 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
814 current_SC->SCp.have_data_in = 1;
815 outb( 0x90 | PARITY_MASK, TMC_Cntl_port );
818 case 0x0c: /* STATUS IN */
819 current_SC->SCp.Status = inb( Read_SCSI_Data_port );
821 printk( "Status = %x, ", current_SC->SCp.Status );
824 if (current_SC->SCp.Status
825 && current_SC->SCp.Status != 2
826 && current_SC->SCp.Status != 8) {
827 printk( "ERROR fd_mcs: target = %d, command = %x, status = %x\n",
830 current_SC->SCp.Status );
834 case 0x0a: /* MESSAGE OUT */
835 outb( MESSAGE_REJECT, Write_SCSI_Data_port ); /* Reject */
837 case 0x0e: /* MESSAGE IN */
838 current_SC->SCp.Message = inb( Read_SCSI_Data_port );
840 printk( "Message = %x, ", current_SC->SCp.Message );
842 if (!current_SC->SCp.Message) ++done;
843 #if DEBUG_MESSAGES || EVERY_ACCESS
844 if (current_SC->SCp.Message) {
845 printk( "fd_mcs: message = %x\n", current_SC->SCp.Message );
853 && !current_SC->SCp.have_data_in
854 && (current_SC->SCp.sent_command
855 >= current_SC->cmd_len)) {
856 /* We have to get the FIFO direction
857 correct, so I've made a table based
858 on the SCSI Standard of which commands
859 appear to require a DATA OUT phase.
862 p. 94: Command for all device types
863 CHANGE DEFINITION 40 DATA OUT
866 COPY AND VERIFY 3a DATA OUT
868 LOG SELECT 4c DATA OUT
870 MODE SELECT (6) 15 DATA OUT
871 MODE SELECT (10) 55 DATA OUT
875 RECEIVE DIAGNOSTIC RESULTS 1c
877 SEND DIAGNOSTIC 1d DATA OUT
879 WRITE BUFFER 3b DATA OUT
881 p.178: Commands for direct-access devices (not listed on p. 94)
882 FORMAT UNIT 04 DATA OUT
885 PREVENT-ALLOW MEDIUM REMOVAL 1e
889 READ DEFECT DATA (10) 37
891 REASSIGN BLOCKS 07 DATA OUT
894 REZERO UNIT/REWIND 01
895 SEARCH DATA EQUAL (10) 31 DATA OUT
896 SEARCH DATA HIGH (10) 30 DATA OUT
897 SEARCH DATA LOW (10) 32 DATA OUT
904 WRITE (6)/PRINT/SEND 0a DATA OUT
905 WRITE (10)/SEND 2a DATA OUT
906 WRITE AND VERIFY (10) 2e DATA OUT
907 WRITE LONG 3f DATA OUT
908 WRITE SAME 41 DATA OUT ?
910 p. 261: Commands for sequential-access devices (not previously listed)
917 RECOVER BUFFERED DATA 14
921 p. 298: Commands for printer devices (not previously listed)
922 ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) *****
923 SLEW AND PRINT 0b DATA OUT -- same as seek
925 SYNCHRONIZE BUFFER 10
927 p. 315: Commands for processor devices (not previously listed)
929 p. 321: Commands for write-once devices (not previously listed)
932 SEARCH DATA EQUAL (12) b1 DATA OUT
933 SEARCH DATA HIGH (12) b0 DATA OUT
934 SEARCH DATA LOW (12) b2 DATA OUT
937 WRITE (12) aa DATA OUT
938 WRITE AND VERIFY (12) ae DATA OUT
940 p. 332: Commands for CD-ROM devices (not previously listed)
945 PLAY TRACK RELATIVE (10) 49
946 PLAY TRACK RELATIVE (12) a9
951 p. 370: Commands for scanner devices (not previously listed)
952 GET DATA BUFFER STATUS 34
956 SET WINDOW 24 DATA OUT
958 p. 391: Commands for optical memory devices (not listed)
961 MEDIUM SCAN 38 DATA OUT
962 READ DEFECT DATA (12) b7
964 READ UPDATED BLOCK 2d
965 UPDATE BLOCK 3d DATA OUT
967 p. 419: Commands for medium changer devices (not listed)
969 INITIALIZE ELEMENT STATUS 07
971 POSITION TO ELEMENT 2b
972 READ ELEMENT STATUS b8
973 REQUEST VOL. ELEMENT ADDRESS b5
974 SEND VOLUME TAG b6 DATA OUT
976 p. 454: Commands for communications devices (not listed previously)
982 switch (current_SC->cmnd[0]) {
983 case CHANGE_DEFINITION: case COMPARE: case COPY:
984 case COPY_VERIFY: case LOG_SELECT: case MODE_SELECT:
985 case MODE_SELECT_10: case SEND_DIAGNOSTIC: case WRITE_BUFFER:
987 case FORMAT_UNIT: case REASSIGN_BLOCKS: case RESERVE:
988 case SEARCH_EQUAL: case SEARCH_HIGH: case SEARCH_LOW:
989 case WRITE_6: case WRITE_10: case WRITE_VERIFY:
990 case 0x3f: case 0x41:
992 case 0xb1: case 0xb0: case 0xb2:
993 case 0xaa: case 0xae:
997 case 0x38: case 0x3d:
1001 case 0xea: /* alternate number for WRITE LONG */
1003 current_SC->SCp.have_data_in = -1;
1004 outb( 0xd0 | PARITY_MASK, TMC_Cntl_port );
1010 current_SC->SCp.have_data_in = 1;
1011 outb( 0x90 | PARITY_MASK, TMC_Cntl_port );
1016 if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
1017 while ( (data_count = FIFO_Size - inw( FIFO_Data_Count_port )) > 512 ) {
1019 printk( "DC=%d, ", data_count ) ;
1021 if (data_count > current_SC->SCp.this_residual)
1022 data_count = current_SC->SCp.this_residual;
1023 if (data_count > 0) {
1025 printk( "%d OUT, ", data_count );
1027 if (data_count == 1) {
1030 outb( *current_SC->SCp.ptr++, Write_FIFO_port );
1031 --current_SC->SCp.this_residual;
1034 tmp_count = data_count << 1;
1035 outsw( Write_FIFO_port, current_SC->SCp.ptr, data_count );
1036 current_SC->SCp.ptr += tmp_count;
1037 Bytes_Written += tmp_count;
1038 current_SC->SCp.this_residual -= tmp_count;
1041 if (!current_SC->SCp.this_residual) {
1042 if (current_SC->SCp.buffers_residual) {
1043 --current_SC->SCp.buffers_residual;
1044 ++current_SC->SCp.buffer;
1045 current_SC->SCp.ptr = current_SC->SCp.buffer->address;
1046 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1051 } else if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
1052 while ((data_count = inw( FIFO_Data_Count_port )) > 0) {
1054 printk( "DC=%d, ", data_count );
1056 if (data_count > current_SC->SCp.this_residual)
1057 data_count = current_SC->SCp.this_residual;
1060 printk( "%d IN, ", data_count );
1062 if (data_count == 1) {
1064 *current_SC->SCp.ptr++ = inb( Read_FIFO_port );
1065 --current_SC->SCp.this_residual;
1067 data_count >>= 1; /* Number of words */
1068 tmp_count = data_count << 1;
1069 insw( Read_FIFO_port, current_SC->SCp.ptr, data_count );
1070 current_SC->SCp.ptr += tmp_count;
1071 Bytes_Read += tmp_count;
1072 current_SC->SCp.this_residual -= tmp_count;
1075 if (!current_SC->SCp.this_residual
1076 && current_SC->SCp.buffers_residual) {
1077 --current_SC->SCp.buffers_residual;
1078 ++current_SC->SCp.buffer;
1079 current_SC->SCp.ptr = current_SC->SCp.buffer->address;
1080 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1087 printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in );
1091 if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
1092 if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) {
1095 unsigned char qualifier;
1097 key = (unsigned char)(*((char *)current_SC->request_buffer + 2))
1099 code = (unsigned char)(*((char *)current_SC->request_buffer + 12));
1100 qualifier = (unsigned char)(*((char *)current_SC->request_buffer
1103 if (key != UNIT_ATTENTION
1104 && !(key == NOT_READY
1106 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
1107 && !(key == ILLEGAL_REQUEST && (code == 0x25
1111 printk( "fd_mcs: REQUEST SENSE "
1112 "Key = %x, Code = %x, Qualifier = %x\n",
1113 key, code, qualifier );
1118 printk( "BEFORE MY_DONE. . ." );
1120 spin_lock_irqsave(&io_request_lock, flags);
1122 (current_SC->SCp.Status & 0xff)
1123 | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
1124 spin_unlock_irqrestore(&io_request_lock, flags);
1126 printk( "RETURNING.\n" );
1130 if (current_SC->SCp.phase & disconnect) {
1131 outb( 0xd0 | FIFO_COUNT, Interrupt_Cntl_port );
1132 outb( 0x00, SCSI_Cntl_port );
1134 outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port );
1138 in_interrupt_flag = 0;
1143 int fd_mcs_release(struct Scsi_Host *shpnt)
1145 int i, this_host, irq_usage;
1147 release_region(shpnt->io_port, shpnt->n_io_port);
1151 for (i = 0; i < found; i++) {
1152 if (shpnt == hosts[i])
1154 if (shpnt->irq == hosts[i]->irq)
1158 /* only for the last one */
1160 free_irq(shpnt->irq, hosts);
1164 for (i = this_host; i < found; i++)
1165 hosts[i] = hosts[i+1];
1167 hosts[found] = NULL;
1172 int fd_mcs_queue( Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *))
1174 struct Scsi_Host *shpnt = SCpnt->host;
1177 panic( "fd_mcs: fd_mcs_queue() NOT REENTRANT!\n" );
1180 printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1182 *(unsigned char *)SCpnt->cmnd,
1184 SCpnt->request_bufflen );
1187 fd_mcs_make_bus_idle(shpnt);
1189 SCpnt->scsi_done = done; /* Save this for the done function */
1192 /* Initialize static data */
1194 if (current_SC->use_sg) {
1195 current_SC->SCp.buffer =
1196 (struct scatterlist *)current_SC->request_buffer;
1197 current_SC->SCp.ptr = current_SC->SCp.buffer->address;
1198 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1199 current_SC->SCp.buffers_residual = current_SC->use_sg - 1;
1201 current_SC->SCp.ptr = (char *)current_SC->request_buffer;
1202 current_SC->SCp.this_residual = current_SC->request_bufflen;
1203 current_SC->SCp.buffer = NULL;
1204 current_SC->SCp.buffers_residual = 0;
1208 current_SC->SCp.Status = 0;
1209 current_SC->SCp.Message = 0;
1210 current_SC->SCp.have_data_in = 0;
1211 current_SC->SCp.sent_command = 0;
1212 current_SC->SCp.phase = in_arbitration;
1214 /* Start arbitration */
1215 outb( 0x00, Interrupt_Cntl_port );
1216 outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */
1217 outb( adapter_mask, SCSI_Data_NoACK_port ); /* Set our id bit */
1219 outb( 0x20, Interrupt_Cntl_port );
1220 outb( 0x14 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */
1225 static void internal_done( Scsi_Cmnd *SCpnt )
1228 SCpnt->host_scribble = (unsigned char *)1;
1231 int fd_mcs_command( Scsi_Cmnd *SCpnt )
1233 fd_mcs_queue( SCpnt, internal_done );
1234 /* host_scribble is used for status here */
1235 SCpnt->host_scribble = NULL;
1236 while (!SCpnt->host_scribble)
1238 return SCpnt->result;
1241 #if DEBUG_ABORT || DEBUG_RESET
1242 static void fd_mcs_print_info( Scsi_Cmnd *SCpnt )
1247 struct Scsi_Host *shpnt = SCpnt->host;
1249 if (!SCpnt || !SCpnt->host) {
1250 printk( "fd_mcs: cannot provide detailed information\n" );
1253 printk( "%s\n", fd_mcs_info( SCpnt->host ) );
1254 print_banner( SCpnt->host );
1255 switch (SCpnt->SCp.phase) {
1256 case in_arbitration: printk( "arbitration " ); break;
1257 case in_selection: printk( "selection " ); break;
1258 case in_other: printk( "other " ); break;
1259 default: printk( "unknown " ); break;
1262 printk( "(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1265 *(unsigned char *)SCpnt->cmnd,
1267 SCpnt->request_bufflen );
1268 printk( "sent_command = %d, have_data_in = %d, timeout = %d\n",
1269 SCpnt->SCp.sent_command,
1270 SCpnt->SCp.have_data_in,
1273 printk( "in_interrupt_flag = %d\n", in_interrupt_flag );
1276 imr = (inb( 0x0a1 ) << 8) + inb( 0x21 );
1278 irr = inb( 0xa0 ) << 8;
1282 isr = inb( 0xa0 ) << 8;
1286 /* Print out interesting information */
1287 printk( "IMR = 0x%04x", imr );
1288 if (imr & (1 << shpnt->irq))
1289 printk( " (masked)" );
1290 printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr );
1292 printk( "SCSI Status = 0x%02x\n", inb( SCSI_Status_port ) );
1293 printk( "TMC Status = 0x%02x", inb( TMC_Status_port ) );
1294 if (inb( TMC_Status_port ) & 1)
1295 printk( " (interrupt)" );
1297 printk( "Interrupt Status = 0x%02x", inb( Interrupt_Status_port ) );
1298 if (inb( Interrupt_Status_port ) & 0x08)
1299 printk( " (enabled)" );
1301 if (chip == tmc18c50 || chip == tmc18c30) {
1302 printk( "FIFO Status = 0x%02x\n", inb( shpnt->io_port + FIFO_Status ) );
1303 printk( "Int. Condition = 0x%02x\n",
1304 inb( shpnt->io_port + Interrupt_Cond ) );
1306 printk( "Configuration 1 = 0x%02x\n", inb( shpnt->io_port + Configuration1 ) );
1307 if (chip == tmc18c50 || chip == tmc18c30)
1308 printk( "Configuration 2 = 0x%02x\n",
1309 inb( shpnt->io_port + Configuration2 ) );
1313 int fd_mcs_abort( Scsi_Cmnd *SCpnt)
1315 struct Scsi_Host *shpnt = SCpnt->host;
1317 unsigned long flags;
1318 #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
1319 printk( "fd_mcs: abort " );
1322 save_flags( flags );
1325 #if EVERY_ACCESS || ERRORS_ONLY
1326 printk( " (not in command)\n" );
1328 restore_flags( flags );
1329 return SCSI_ABORT_NOT_RUNNING;
1330 } else printk( "\n" );
1333 fd_mcs_print_info( SCpnt );
1336 fd_mcs_make_bus_idle(shpnt);
1338 current_SC->SCp.phase |= aborted;
1340 current_SC->result = DID_ABORT << 16;
1342 restore_flags( flags );
1344 /* Aborts are not done well. . . */
1345 spin_lock_irqsave(&io_request_lock, flags);
1346 my_done( shpnt, DID_ABORT << 16 );
1347 spin_unlock_irqrestore(&io_request_lock, flags);
1349 return SCSI_ABORT_SUCCESS;
1352 int fd_mcs_reset( Scsi_Cmnd *SCpnt, unsigned int reset_flags )
1354 struct Scsi_Host *shpnt = SCpnt->host;
1357 static int called_once = 0;
1361 if (SCpnt) printk( "fd_mcs: SCSI Bus Reset\n" );
1365 if (called_once) fd_mcs_print_info( current_SC );
1369 outb( 1, SCSI_Cntl_port );
1371 outb( 0, SCSI_Cntl_port );
1373 outb( 0, SCSI_Mode_Cntl_port );
1374 outb( PARITY_MASK, TMC_Cntl_port );
1376 /* Unless this is the very first call (i.e., SCPnt == NULL), everything
1377 is probably hosed at this point. We will, however, try to keep
1378 things going by informing the high-level code that we need help. */
1380 return SCSI_RESET_WAKEUP;
1384 #include <scsi/scsi_ioctl.h>
1386 int fd_mcs_biosparam( Scsi_Disk *disk, kdev_t dev, int *info_array )
1389 unsigned char buf[512 + sizeof( int ) * 2];
1390 int size = disk->capacity;
1391 int *sizes = (int *)buf;
1392 unsigned char *data = (unsigned char *)(sizes + 2);
1393 unsigned char do_read[] = { READ_6, 0, 0, 0, 1, 0 };
1396 /* BIOS >= 3.4 for MCA cards */
1397 drive = MINOR(dev) / 16;
1399 /* This algorithm was provided by Future Domain (much thanks!). */
1401 sizes[0] = 0; /* zero bytes out */
1402 sizes[1] = 512; /* one sector in */
1403 memcpy( data, do_read, sizeof( do_read ) );
1404 retcode = kernel_scsi_ioctl( disk->device,
1405 SCSI_IOCTL_SEND_COMMAND,
1407 if (!retcode /* SCSI command ok */
1408 && data[511] == 0xaa && data[510] == 0x55 /* Partition table valid */
1409 && data[0x1c2]) { /* Partition type */
1411 /* The partition table layout is as follows:
1414 Offset: 0 = partition status
1416 2 = starting sector and cylinder (word, encoded)
1419 6 = ending sector and cylinder (word, encoded)
1420 8 = starting absolute sector (double word)
1421 c = number of sectors (double word)
1422 Signature: 0x1fe = 0x55aa
1424 So, this algorithm assumes:
1425 1) the first partition table is in use,
1426 2) the data in the first entry is correct, and
1427 3) partitions never divide cylinders
1429 Note that (1) may be FALSE for NetBSD (and other BSD flavors),
1430 as well as for Linux. Note also, that Linux doesn't pay any
1431 attention to the fields that are used by this algorithm -- it
1432 only uses the absolute sector data. Recent versions of Linux's
1433 fdisk(1) will fill this data in correctly, and forthcoming
1434 versions will check for consistency.
1436 Checking for a non-zero partition type is not part of the
1437 Future Domain algorithm, but it seemed to be a reasonable thing
1438 to do, especially in the Linux and BSD worlds. */
1440 info_array[0] = data[0x1c3] + 1; /* heads */
1441 info_array[1] = data[0x1c4] & 0x3f; /* sectors */
1444 /* Note that this new method guarantees that there will always be
1445 less than 1024 cylinders on a platter. This is good for drives
1446 up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
1448 if ((unsigned int)size >= 0x7e0000U) {
1449 info_array[0] = 0xff; /* heads = 255 */
1450 info_array[1] = 0x3f; /* sectors = 63 */
1451 } else if ((unsigned int)size >= 0x200000U) {
1452 info_array[0] = 0x80; /* heads = 128 */
1453 info_array[1] = 0x3f; /* sectors = 63 */
1455 info_array[0] = 0x40; /* heads = 64 */
1456 info_array[1] = 0x20; /* sectors = 32 */
1459 /* For both methods, compute the cylinders */
1460 info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] );
1466 /* Eventually this will go into an include file, but this will be later */
1467 static Scsi_Host_Template driver_template = FD_MCS;
1469 #include "scsi_module.c"