2 * Driver for Adaptec AHA-1542 SCSI host adapters
4 * Copyright (C) 1992 Tommy Thorn
5 * Copyright (C) 1993, 1994, 1995 Eric Youngdale
6 * Copyright (C) 2015 Ondrej Zary
9 #include <linux/module.h>
10 #include <linux/interrupt.h>
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/string.h>
14 #include <linux/delay.h>
15 #include <linux/init.h>
16 #include <linux/spinlock.h>
17 #include <linux/isa.h>
18 #include <linux/pnp.h>
19 #include <linux/slab.h>
22 #include <scsi/scsi_cmnd.h>
23 #include <scsi/scsi_device.h>
24 #include <scsi/scsi_host.h>
29 static bool isapnp
= 1;
30 module_param(isapnp
, bool, 0);
31 MODULE_PARM_DESC(isapnp
, "enable PnP support (default=1)");
33 static int io
[MAXBOARDS
] = { 0x330, 0x334, 0, 0 };
34 module_param_hw_array(io
, int, ioport
, NULL
, 0);
35 MODULE_PARM_DESC(io
, "base IO address of controller (0x130,0x134,0x230,0x234,0x330,0x334, default=0x330,0x334)");
37 /* time AHA spends on the AT-bus during data transfer */
38 static int bus_on
[MAXBOARDS
] = { -1, -1, -1, -1 }; /* power-on default: 11us */
39 module_param_array(bus_on
, int, NULL
, 0);
40 MODULE_PARM_DESC(bus_on
, "bus on time [us] (2-15, default=-1 [HW default: 11])");
42 /* time AHA spends off the bus (not to monopolize it) during data transfer */
43 static int bus_off
[MAXBOARDS
] = { -1, -1, -1, -1 }; /* power-on default: 4us */
44 module_param_array(bus_off
, int, NULL
, 0);
45 MODULE_PARM_DESC(bus_off
, "bus off time [us] (1-64, default=-1 [HW default: 4])");
47 /* default is jumper selected (J1 on 1542A), factory default = 5 MB/s */
48 static int dma_speed
[MAXBOARDS
] = { -1, -1, -1, -1 };
49 module_param_array(dma_speed
, int, NULL
, 0);
50 MODULE_PARM_DESC(dma_speed
, "DMA speed [MB/s] (5,6,7,8,10, default=-1 [by jumper])");
52 #define BIOS_TRANSLATION_6432 1 /* Default case these days */
53 #define BIOS_TRANSLATION_25563 2 /* Big disk case */
55 struct aha1542_hostdata
{
56 /* This will effectively start both of them at the first mailbox */
57 int bios_translation
; /* Mapping bios uses - for compatibility */
58 int aha1542_last_mbi_used
;
59 int aha1542_last_mbo_used
;
60 struct scsi_cmnd
*int_cmds
[AHA1542_MAILBOXES
];
61 struct mailbox mb
[2 * AHA1542_MAILBOXES
];
62 struct ccb ccb
[AHA1542_MAILBOXES
];
65 static inline void aha1542_intr_reset(u16 base
)
67 outb(IRST
, CONTROL(base
));
70 static inline bool wait_mask(u16 port
, u8 mask
, u8 allof
, u8 noneof
, int timeout
)
80 u8 bits
= inb(port
) & mask
;
81 if ((bits
& allof
) == allof
&& ((bits
& noneof
) == 0))
92 static int aha1542_outb(unsigned int base
, u8 val
)
94 if (!wait_mask(STATUS(base
), CDF
, 0, CDF
, 0))
96 outb(val
, DATA(base
));
101 static int aha1542_out(unsigned int base
, u8
*buf
, int len
)
104 if (!wait_mask(STATUS(base
), CDF
, 0, CDF
, 0))
106 outb(*buf
++, DATA(base
));
108 if (!wait_mask(INTRFLAGS(base
), INTRMASK
, HACC
, 0, 0))
114 /* Only used at boot time, so we do not need to worry about latency as much
117 static int aha1542_in(unsigned int base
, u8
*buf
, int len
, int timeout
)
120 if (!wait_mask(STATUS(base
), DF
, DF
, 0, timeout
))
122 *buf
++ = inb(DATA(base
));
127 static int makecode(unsigned hosterr
, unsigned scsierr
)
131 case 0xa: /* Linked command complete without error and linked normally */
132 case 0xb: /* Linked command complete without error, interrupt generated */
136 case 0x11: /* Selection time out-The initiator selection or target
137 reselection was not complete within the SCSI Time out period */
138 hosterr
= DID_TIME_OUT
;
141 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
142 than was allocated by the Data Length field or the sum of the
143 Scatter / Gather Data Length fields. */
145 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
147 case 0x15: /* MBO command was not 00, 01 or 02-The first byte of the CB was
148 invalid. This usually indicates a software failure. */
150 case 0x16: /* Invalid CCB Operation Code-The first byte of the CCB was invalid.
151 This usually indicates a software failure. */
153 case 0x17: /* Linked CCB does not have the same LUN-A subsequent CCB of a set
154 of linked CCB's does not specify the same logical unit number as
156 case 0x18: /* Invalid Target Direction received from Host-The direction of a
157 Target Mode CCB was invalid. */
159 case 0x19: /* Duplicate CCB Received in Target Mode-More than once CCB was
160 received to service data transfer between the same target LUN
161 and initiator SCSI ID in the same direction. */
163 case 0x1a: /* Invalid CCB or Segment List Parameter-A segment list with a zero
164 length segment or invalid segment list boundaries was received.
165 A CCB parameter was invalid. */
167 printk("Aha1542: %x %x\n", hosterr
, scsierr
);
169 hosterr
= DID_ERROR
; /* Couldn't find any better */
172 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
173 phase sequence was requested by the target. The host adapter
174 will generate a SCSI Reset Condition, notifying the host with
179 printk(KERN_ERR
"aha1542: makecode: unknown hoststatus %x\n", hosterr
);
182 return scsierr
| (hosterr
<< 16);
185 static int aha1542_test_port(struct Scsi_Host
*sh
)
187 u8 inquiry_result
[4];
190 /* Quick and dirty test for presence of the card. */
191 if (inb(STATUS(sh
->io_port
)) == 0xff)
194 /* Reset the adapter. I ought to make a hard reset, but it's not really necessary */
196 /* In case some other card was probing here, reset interrupts */
197 aha1542_intr_reset(sh
->io_port
); /* reset interrupts, so they don't block */
199 outb(SRST
| IRST
/*|SCRST */ , CONTROL(sh
->io_port
));
201 mdelay(20); /* Wait a little bit for things to settle down. */
203 /* Expect INIT and IDLE, any of the others are bad */
204 if (!wait_mask(STATUS(sh
->io_port
), STATMASK
, INIT
| IDLE
, STST
| DIAGF
| INVDCMD
| DF
| CDF
, 0))
207 /* Shouldn't have generated any interrupts during reset */
208 if (inb(INTRFLAGS(sh
->io_port
)) & INTRMASK
)
211 /* Perform a host adapter inquiry instead so we do not need to set
212 up the mailboxes ahead of time */
214 aha1542_outb(sh
->io_port
, CMD_INQUIRY
);
216 for (i
= 0; i
< 4; i
++) {
217 if (!wait_mask(STATUS(sh
->io_port
), DF
, DF
, 0, 0))
219 inquiry_result
[i
] = inb(DATA(sh
->io_port
));
222 /* Reading port should reset DF */
223 if (inb(STATUS(sh
->io_port
)) & DF
)
226 /* When HACC, command is completed, and we're though testing */
227 if (!wait_mask(INTRFLAGS(sh
->io_port
), HACC
, HACC
, 0, 0))
230 /* Clear interrupts */
231 outb(IRST
, CONTROL(sh
->io_port
));
236 static irqreturn_t
aha1542_interrupt(int irq
, void *dev_id
)
238 struct Scsi_Host
*sh
= dev_id
;
239 struct aha1542_hostdata
*aha1542
= shost_priv(sh
);
240 void (*my_done
)(struct scsi_cmnd
*) = NULL
;
241 int errstatus
, mbi
, mbo
, mbistatus
;
244 struct scsi_cmnd
*tmp_cmd
;
246 struct mailbox
*mb
= aha1542
->mb
;
247 struct ccb
*ccb
= aha1542
->ccb
;
251 flag
= inb(INTRFLAGS(sh
->io_port
));
252 shost_printk(KERN_DEBUG
, sh
, "aha1542_intr_handle: ");
253 if (!(flag
& ANYINTR
))
254 printk("no interrupt?");
263 printk("status %02x\n", inb(STATUS(sh
->io_port
)));
268 spin_lock_irqsave(sh
->host_lock
, flags
);
270 flag
= inb(INTRFLAGS(sh
->io_port
));
272 /* Check for unusual interrupts. If any of these happen, we should
273 probably do something special, but for now just printing a message
274 is sufficient. A SCSI reset detected is something that we really
275 need to deal with in some way. */
284 aha1542_intr_reset(sh
->io_port
);
286 mbi
= aha1542
->aha1542_last_mbi_used
+ 1;
287 if (mbi
>= 2 * AHA1542_MAILBOXES
)
288 mbi
= AHA1542_MAILBOXES
;
291 if (mb
[mbi
].status
!= 0)
294 if (mbi
>= 2 * AHA1542_MAILBOXES
)
295 mbi
= AHA1542_MAILBOXES
;
296 } while (mbi
!= aha1542
->aha1542_last_mbi_used
);
298 if (mb
[mbi
].status
== 0) {
299 spin_unlock_irqrestore(sh
->host_lock
, flags
);
300 /* Hmm, no mail. Must have read it the last time around */
301 if (!number_serviced
)
302 shost_printk(KERN_WARNING
, sh
, "interrupt received, but no mail.\n");
306 mbo
= (scsi2int(mb
[mbi
].ccbptr
) - (isa_virt_to_bus(&ccb
[0]))) / sizeof(struct ccb
);
307 mbistatus
= mb
[mbi
].status
;
309 aha1542
->aha1542_last_mbi_used
= mbi
;
312 if (ccb
[mbo
].tarstat
| ccb
[mbo
].hastat
)
313 shost_printk(KERN_DEBUG
, sh
, "aha1542_command: returning %x (status %d)\n",
314 ccb
[mbo
].tarstat
+ ((int) ccb
[mbo
].hastat
<< 16), mb
[mbi
].status
);
318 continue; /* Aborted command not found */
321 shost_printk(KERN_DEBUG
, sh
, "...done %d %d\n", mbo
, mbi
);
324 tmp_cmd
= aha1542
->int_cmds
[mbo
];
326 if (!tmp_cmd
|| !tmp_cmd
->scsi_done
) {
327 spin_unlock_irqrestore(sh
->host_lock
, flags
);
328 shost_printk(KERN_WARNING
, sh
, "Unexpected interrupt\n");
329 shost_printk(KERN_WARNING
, sh
, "tarstat=%x, hastat=%x idlun=%x ccb#=%d\n", ccb
[mbo
].tarstat
,
330 ccb
[mbo
].hastat
, ccb
[mbo
].idlun
, mbo
);
333 my_done
= tmp_cmd
->scsi_done
;
334 kfree(tmp_cmd
->host_scribble
);
335 tmp_cmd
->host_scribble
= NULL
;
336 /* Fetch the sense data, and tuck it away, in the required slot. The
337 Adaptec automatically fetches it, and there is no guarantee that
338 we will still have it in the cdb when we come back */
339 if (ccb
[mbo
].tarstat
== 2)
340 memcpy(tmp_cmd
->sense_buffer
, &ccb
[mbo
].cdb
[ccb
[mbo
].cdblen
],
341 SCSI_SENSE_BUFFERSIZE
);
344 /* is there mail :-) */
346 /* more error checking left out here */
348 /* This is surely wrong, but I don't know what's right */
349 errstatus
= makecode(ccb
[mbo
].hastat
, ccb
[mbo
].tarstat
);
355 shost_printk(KERN_DEBUG
, sh
, "(aha1542 error:%x %x %x) ", errstatus
,
356 ccb
[mbo
].hastat
, ccb
[mbo
].tarstat
);
357 if (ccb
[mbo
].tarstat
== 2)
358 print_hex_dump_bytes("sense: ", DUMP_PREFIX_NONE
, &ccb
[mbo
].cdb
[ccb
[mbo
].cdblen
], 12);
360 printk("aha1542_intr_handle: returning %6x\n", errstatus
);
362 tmp_cmd
->result
= errstatus
;
363 aha1542
->int_cmds
[mbo
] = NULL
; /* This effectively frees up the mailbox slot, as
364 far as queuecommand is concerned */
370 static int aha1542_queuecommand(struct Scsi_Host
*sh
, struct scsi_cmnd
*cmd
)
372 struct aha1542_hostdata
*aha1542
= shost_priv(sh
);
374 u8 target
= cmd
->device
->id
;
375 u8 lun
= cmd
->device
->lun
;
377 int bufflen
= scsi_bufflen(cmd
);
379 struct mailbox
*mb
= aha1542
->mb
;
380 struct ccb
*ccb
= aha1542
->ccb
;
383 if (*cmd
->cmnd
== REQUEST_SENSE
) {
384 /* Don't do the command - we have the sense data already */
392 if (*cmd
->cmnd
== READ_10
|| *cmd
->cmnd
== WRITE_10
)
393 i
= xscsi2int(cmd
->cmnd
+ 2);
394 else if (*cmd
->cmnd
== READ_6
|| *cmd
->cmnd
== WRITE_6
)
395 i
= scsi2int(cmd
->cmnd
+ 2);
396 shost_printk(KERN_DEBUG
, sh
, "aha1542_queuecommand: dev %d cmd %02x pos %d len %d",
397 target
, *cmd
->cmnd
, i
, bufflen
);
398 print_hex_dump_bytes("command: ", DUMP_PREFIX_NONE
, cmd
->cmnd
, cmd
->cmd_len
);
401 if (bufflen
) { /* allocate memory before taking host_lock */
402 sg_count
= scsi_sg_count(cmd
);
403 cptr
= kmalloc_array(sg_count
, sizeof(*cptr
),
404 GFP_KERNEL
| GFP_DMA
);
406 return SCSI_MLQUEUE_HOST_BUSY
;
412 /* Use the outgoing mailboxes in a round-robin fashion, because this
413 is how the host adapter will scan for them */
415 spin_lock_irqsave(sh
->host_lock
, flags
);
416 mbo
= aha1542
->aha1542_last_mbo_used
+ 1;
417 if (mbo
>= AHA1542_MAILBOXES
)
421 if (mb
[mbo
].status
== 0 && aha1542
->int_cmds
[mbo
] == NULL
)
424 if (mbo
>= AHA1542_MAILBOXES
)
426 } while (mbo
!= aha1542
->aha1542_last_mbo_used
);
428 if (mb
[mbo
].status
|| aha1542
->int_cmds
[mbo
])
429 panic("Unable to find empty mailbox for aha1542.\n");
431 aha1542
->int_cmds
[mbo
] = cmd
; /* This will effectively prevent someone else from
432 screwing with this cdb. */
434 aha1542
->aha1542_last_mbo_used
= mbo
;
437 shost_printk(KERN_DEBUG
, sh
, "Sending command (%d %p)...", mbo
, cmd
->scsi_done
);
440 any2scsi(mb
[mbo
].ccbptr
, isa_virt_to_bus(&ccb
[mbo
])); /* This gets trashed for some reason */
442 memset(&ccb
[mbo
], 0, sizeof(struct ccb
));
444 ccb
[mbo
].cdblen
= cmd
->cmd_len
;
447 if (*cmd
->cmnd
== READ_10
|| *cmd
->cmnd
== READ_6
)
449 else if (*cmd
->cmnd
== WRITE_10
|| *cmd
->cmnd
== WRITE_6
)
452 memcpy(ccb
[mbo
].cdb
, cmd
->cmnd
, ccb
[mbo
].cdblen
);
455 struct scatterlist
*sg
;
458 ccb
[mbo
].op
= 2; /* SCSI Initiator Command w/scatter-gather */
459 cmd
->host_scribble
= (void *)cptr
;
460 scsi_for_each_sg(cmd
, sg
, sg_count
, i
) {
461 any2scsi(cptr
[i
].dataptr
, isa_page_to_bus(sg_page(sg
))
463 any2scsi(cptr
[i
].datalen
, sg
->length
);
465 any2scsi(ccb
[mbo
].datalen
, sg_count
* sizeof(struct chain
));
466 any2scsi(ccb
[mbo
].dataptr
, isa_virt_to_bus(cptr
));
468 shost_printk(KERN_DEBUG
, sh
, "cptr %p: ", cptr
);
469 print_hex_dump_bytes("cptr: ", DUMP_PREFIX_NONE
, cptr
, 18);
472 ccb
[mbo
].op
= 0; /* SCSI Initiator Command */
473 cmd
->host_scribble
= NULL
;
474 any2scsi(ccb
[mbo
].datalen
, 0);
475 any2scsi(ccb
[mbo
].dataptr
, 0);
477 ccb
[mbo
].idlun
= (target
& 7) << 5 | direction
| (lun
& 7); /*SCSI Target Id */
478 ccb
[mbo
].rsalen
= 16;
479 ccb
[mbo
].linkptr
[0] = ccb
[mbo
].linkptr
[1] = ccb
[mbo
].linkptr
[2] = 0;
480 ccb
[mbo
].commlinkid
= 0;
483 print_hex_dump_bytes("sending: ", DUMP_PREFIX_NONE
, &ccb
[mbo
], sizeof(ccb
[mbo
]) - 10);
484 printk("aha1542_queuecommand: now waiting for interrupt ");
487 aha1542_outb(cmd
->device
->host
->io_port
, CMD_START_SCSI
);
488 spin_unlock_irqrestore(sh
->host_lock
, flags
);
493 /* Initialize mailboxes */
494 static void setup_mailboxes(struct Scsi_Host
*sh
)
496 struct aha1542_hostdata
*aha1542
= shost_priv(sh
);
498 struct mailbox
*mb
= aha1542
->mb
;
499 struct ccb
*ccb
= aha1542
->ccb
;
501 u8 mb_cmd
[5] = { CMD_MBINIT
, AHA1542_MAILBOXES
, 0, 0, 0};
503 for (i
= 0; i
< AHA1542_MAILBOXES
; i
++) {
504 mb
[i
].status
= mb
[AHA1542_MAILBOXES
+ i
].status
= 0;
505 any2scsi(mb
[i
].ccbptr
, isa_virt_to_bus(&ccb
[i
]));
507 aha1542_intr_reset(sh
->io_port
); /* reset interrupts, so they don't block */
508 any2scsi((mb_cmd
+ 2), isa_virt_to_bus(mb
));
509 if (aha1542_out(sh
->io_port
, mb_cmd
, 5))
510 shost_printk(KERN_ERR
, sh
, "failed setting up mailboxes\n");
511 aha1542_intr_reset(sh
->io_port
);
514 static int aha1542_getconfig(struct Scsi_Host
*sh
)
516 u8 inquiry_result
[3];
518 i
= inb(STATUS(sh
->io_port
));
520 i
= inb(DATA(sh
->io_port
));
522 aha1542_outb(sh
->io_port
, CMD_RETCONF
);
523 aha1542_in(sh
->io_port
, inquiry_result
, 3, 0);
524 if (!wait_mask(INTRFLAGS(sh
->io_port
), INTRMASK
, HACC
, 0, 0))
525 shost_printk(KERN_ERR
, sh
, "error querying board settings\n");
526 aha1542_intr_reset(sh
->io_port
);
527 switch (inquiry_result
[0]) {
541 /* This means that the adapter, although Adaptec 1542 compatible, doesn't use a DMA channel.
542 Currently only aware of the BusLogic BT-445S VL-Bus adapter which needs this. */
543 sh
->dma_channel
= 0xFF;
546 shost_printk(KERN_ERR
, sh
, "Unable to determine DMA channel.\n");
549 switch (inquiry_result
[1]) {
569 shost_printk(KERN_ERR
, sh
, "Unable to determine IRQ level.\n");
572 sh
->this_id
= inquiry_result
[2] & 7;
576 /* This function should only be called for 1542C boards - we can detect
577 the special firmware settings and unlock the board */
579 static int aha1542_mbenable(struct Scsi_Host
*sh
)
581 static u8 mbenable_cmd
[3];
582 static u8 mbenable_result
[2];
585 retval
= BIOS_TRANSLATION_6432
;
587 aha1542_outb(sh
->io_port
, CMD_EXTBIOS
);
588 if (aha1542_in(sh
->io_port
, mbenable_result
, 2, 100))
590 if (!wait_mask(INTRFLAGS(sh
->io_port
), INTRMASK
, HACC
, 0, 100))
592 aha1542_intr_reset(sh
->io_port
);
594 if ((mbenable_result
[0] & 0x08) || mbenable_result
[1]) {
595 mbenable_cmd
[0] = CMD_MBENABLE
;
597 mbenable_cmd
[2] = mbenable_result
[1];
599 if ((mbenable_result
[0] & 0x08) && (mbenable_result
[1] & 0x03))
600 retval
= BIOS_TRANSLATION_25563
;
602 if (aha1542_out(sh
->io_port
, mbenable_cmd
, 3))
607 shost_printk(KERN_ERR
, sh
, "Mailbox init failed\n");
609 aha1542_intr_reset(sh
->io_port
);
613 /* Query the board to find out if it is a 1542 or a 1740, or whatever. */
614 static int aha1542_query(struct Scsi_Host
*sh
)
616 struct aha1542_hostdata
*aha1542
= shost_priv(sh
);
617 u8 inquiry_result
[4];
619 i
= inb(STATUS(sh
->io_port
));
621 i
= inb(DATA(sh
->io_port
));
623 aha1542_outb(sh
->io_port
, CMD_INQUIRY
);
624 aha1542_in(sh
->io_port
, inquiry_result
, 4, 0);
625 if (!wait_mask(INTRFLAGS(sh
->io_port
), INTRMASK
, HACC
, 0, 0))
626 shost_printk(KERN_ERR
, sh
, "error querying card type\n");
627 aha1542_intr_reset(sh
->io_port
);
629 aha1542
->bios_translation
= BIOS_TRANSLATION_6432
; /* Default case */
631 /* For an AHA1740 series board, we ignore the board since there is a
632 hardware bug which can lead to wrong blocks being returned if the board
633 is operating in the 1542 emulation mode. Since there is an extended mode
634 driver, we simply ignore the board and let the 1740 driver pick it up.
637 if (inquiry_result
[0] == 0x43) {
638 shost_printk(KERN_INFO
, sh
, "Emulation mode not supported for AHA-1740 hardware, use aha1740 driver instead.\n");
642 /* Always call this - boards that do not support extended bios translation
643 will ignore the command, and we will set the proper default */
645 aha1542
->bios_translation
= aha1542_mbenable(sh
);
650 static u8
dma_speed_hw(int dma_speed
)
665 return 0xff; /* invalid */
668 /* Set the Bus on/off-times as not to ruin floppy performance */
669 static void aha1542_set_bus_times(struct Scsi_Host
*sh
, int bus_on
, int bus_off
, int dma_speed
)
672 u8 oncmd
[] = { CMD_BUSON_TIME
, clamp(bus_on
, 2, 15) };
674 aha1542_intr_reset(sh
->io_port
);
675 if (aha1542_out(sh
->io_port
, oncmd
, 2))
680 u8 offcmd
[] = { CMD_BUSOFF_TIME
, clamp(bus_off
, 1, 64) };
682 aha1542_intr_reset(sh
->io_port
);
683 if (aha1542_out(sh
->io_port
, offcmd
, 2))
687 if (dma_speed_hw(dma_speed
) != 0xff) {
688 u8 dmacmd
[] = { CMD_DMASPEED
, dma_speed_hw(dma_speed
) };
690 aha1542_intr_reset(sh
->io_port
);
691 if (aha1542_out(sh
->io_port
, dmacmd
, 2))
694 aha1542_intr_reset(sh
->io_port
);
697 shost_printk(KERN_ERR
, sh
, "setting bus on/off-time failed\n");
698 aha1542_intr_reset(sh
->io_port
);
701 /* return non-zero on detection */
702 static struct Scsi_Host
*aha1542_hw_init(struct scsi_host_template
*tpnt
, struct device
*pdev
, int indx
)
704 unsigned int base_io
= io
[indx
];
705 struct Scsi_Host
*sh
;
706 struct aha1542_hostdata
*aha1542
;
707 char dma_info
[] = "no DMA";
712 if (!request_region(base_io
, AHA1542_REGION_SIZE
, "aha1542"))
715 sh
= scsi_host_alloc(tpnt
, sizeof(struct aha1542_hostdata
));
718 aha1542
= shost_priv(sh
);
720 sh
->unique_id
= base_io
;
721 sh
->io_port
= base_io
;
722 sh
->n_io_port
= AHA1542_REGION_SIZE
;
723 aha1542
->aha1542_last_mbi_used
= 2 * AHA1542_MAILBOXES
- 1;
724 aha1542
->aha1542_last_mbo_used
= AHA1542_MAILBOXES
- 1;
726 if (!aha1542_test_port(sh
))
729 aha1542_set_bus_times(sh
, bus_on
[indx
], bus_off
[indx
], dma_speed
[indx
]);
730 if (aha1542_query(sh
))
732 if (aha1542_getconfig(sh
) == -1)
735 if (sh
->dma_channel
!= 0xFF)
736 snprintf(dma_info
, sizeof(dma_info
), "DMA %d", sh
->dma_channel
);
737 shost_printk(KERN_INFO
, sh
, "Adaptec AHA-1542 (SCSI-ID %d) at IO 0x%x, IRQ %d, %s\n",
738 sh
->this_id
, base_io
, sh
->irq
, dma_info
);
739 if (aha1542
->bios_translation
== BIOS_TRANSLATION_25563
)
740 shost_printk(KERN_INFO
, sh
, "Using extended bios translation\n");
744 if (request_irq(sh
->irq
, aha1542_interrupt
, 0, "aha1542", sh
)) {
745 shost_printk(KERN_ERR
, sh
, "Unable to allocate IRQ.\n");
748 if (sh
->dma_channel
!= 0xFF) {
749 if (request_dma(sh
->dma_channel
, "aha1542")) {
750 shost_printk(KERN_ERR
, sh
, "Unable to allocate DMA channel.\n");
753 if (sh
->dma_channel
== 0 || sh
->dma_channel
>= 5) {
754 set_dma_mode(sh
->dma_channel
, DMA_MODE_CASCADE
);
755 enable_dma(sh
->dma_channel
);
759 if (scsi_add_host(sh
, pdev
))
766 if (sh
->dma_channel
!= 0xff)
767 free_dma(sh
->dma_channel
);
769 free_irq(sh
->irq
, sh
);
773 release_region(base_io
, AHA1542_REGION_SIZE
);
778 static int aha1542_release(struct Scsi_Host
*sh
)
780 scsi_remove_host(sh
);
781 if (sh
->dma_channel
!= 0xff)
782 free_dma(sh
->dma_channel
);
784 free_irq(sh
->irq
, sh
);
785 if (sh
->io_port
&& sh
->n_io_port
)
786 release_region(sh
->io_port
, sh
->n_io_port
);
793 * This is a device reset. This is handled by sending a special command
796 static int aha1542_dev_reset(struct scsi_cmnd
*cmd
)
798 struct Scsi_Host
*sh
= cmd
->device
->host
;
799 struct aha1542_hostdata
*aha1542
= shost_priv(sh
);
801 struct mailbox
*mb
= aha1542
->mb
;
802 u8 target
= cmd
->device
->id
;
803 u8 lun
= cmd
->device
->lun
;
805 struct ccb
*ccb
= aha1542
->ccb
;
807 spin_lock_irqsave(sh
->host_lock
, flags
);
808 mbo
= aha1542
->aha1542_last_mbo_used
+ 1;
809 if (mbo
>= AHA1542_MAILBOXES
)
813 if (mb
[mbo
].status
== 0 && aha1542
->int_cmds
[mbo
] == NULL
)
816 if (mbo
>= AHA1542_MAILBOXES
)
818 } while (mbo
!= aha1542
->aha1542_last_mbo_used
);
820 if (mb
[mbo
].status
|| aha1542
->int_cmds
[mbo
])
821 panic("Unable to find empty mailbox for aha1542.\n");
823 aha1542
->int_cmds
[mbo
] = cmd
; /* This will effectively
824 prevent someone else from
825 screwing with this cdb. */
827 aha1542
->aha1542_last_mbo_used
= mbo
;
829 any2scsi(mb
[mbo
].ccbptr
, isa_virt_to_bus(&ccb
[mbo
])); /* This gets trashed for some reason */
831 memset(&ccb
[mbo
], 0, sizeof(struct ccb
));
833 ccb
[mbo
].op
= 0x81; /* BUS DEVICE RESET */
835 ccb
[mbo
].idlun
= (target
& 7) << 5 | (lun
& 7); /*SCSI Target Id */
837 ccb
[mbo
].linkptr
[0] = ccb
[mbo
].linkptr
[1] = ccb
[mbo
].linkptr
[2] = 0;
838 ccb
[mbo
].commlinkid
= 0;
841 * Now tell the 1542 to flush all pending commands for this
844 aha1542_outb(sh
->io_port
, CMD_START_SCSI
);
845 spin_unlock_irqrestore(sh
->host_lock
, flags
);
847 scmd_printk(KERN_WARNING
, cmd
,
848 "Trying device reset for target\n");
853 static int aha1542_reset(struct scsi_cmnd
*cmd
, u8 reset_cmd
)
855 struct Scsi_Host
*sh
= cmd
->device
->host
;
856 struct aha1542_hostdata
*aha1542
= shost_priv(sh
);
860 spin_lock_irqsave(sh
->host_lock
, flags
);
862 * This does a scsi reset for all devices on the bus.
863 * In principle, we could also reset the 1542 - should
864 * we do this? Try this first, and we can add that later
865 * if it turns out to be useful.
867 outb(reset_cmd
, CONTROL(cmd
->device
->host
->io_port
));
869 if (!wait_mask(STATUS(cmd
->device
->host
->io_port
),
870 STATMASK
, IDLE
, STST
| DIAGF
| INVDCMD
| DF
| CDF
, 0)) {
871 spin_unlock_irqrestore(sh
->host_lock
, flags
);
876 * We need to do this too before the 1542 can interact with
877 * us again after host reset.
879 if (reset_cmd
& HRST
)
880 setup_mailboxes(cmd
->device
->host
);
883 * Now try to pick up the pieces. For all pending commands,
884 * free any internal data structures, and basically clear things
885 * out. We do not try and restart any commands or anything -
886 * the strategy handler takes care of that crap.
888 shost_printk(KERN_WARNING
, cmd
->device
->host
, "Sent BUS RESET to scsi host %d\n", cmd
->device
->host
->host_no
);
890 for (i
= 0; i
< AHA1542_MAILBOXES
; i
++) {
891 if (aha1542
->int_cmds
[i
] != NULL
) {
892 struct scsi_cmnd
*tmp_cmd
;
893 tmp_cmd
= aha1542
->int_cmds
[i
];
895 if (tmp_cmd
->device
->soft_reset
) {
897 * If this device implements the soft reset option,
898 * then it is still holding onto the command, and
899 * may yet complete it. In this case, we don't
904 kfree(tmp_cmd
->host_scribble
);
905 tmp_cmd
->host_scribble
= NULL
;
906 aha1542
->int_cmds
[i
] = NULL
;
907 aha1542
->mb
[i
].status
= 0;
911 spin_unlock_irqrestore(sh
->host_lock
, flags
);
915 static int aha1542_bus_reset(struct scsi_cmnd
*cmd
)
917 return aha1542_reset(cmd
, SCRST
);
920 static int aha1542_host_reset(struct scsi_cmnd
*cmd
)
922 return aha1542_reset(cmd
, HRST
| SCRST
);
925 static int aha1542_biosparam(struct scsi_device
*sdev
,
926 struct block_device
*bdev
, sector_t capacity
, int geom
[])
928 struct aha1542_hostdata
*aha1542
= shost_priv(sdev
->host
);
930 if (capacity
>= 0x200000 &&
931 aha1542
->bios_translation
== BIOS_TRANSLATION_25563
) {
932 /* Please verify that this is the same as what DOS returns */
933 geom
[0] = 255; /* heads */
934 geom
[1] = 63; /* sectors */
936 geom
[0] = 64; /* heads */
937 geom
[1] = 32; /* sectors */
939 geom
[2] = sector_div(capacity
, geom
[0] * geom
[1]); /* cylinders */
943 MODULE_LICENSE("GPL");
945 static struct scsi_host_template driver_template
= {
946 .module
= THIS_MODULE
,
947 .proc_name
= "aha1542",
948 .name
= "Adaptec 1542",
949 .queuecommand
= aha1542_queuecommand
,
950 .eh_device_reset_handler
= aha1542_dev_reset
,
951 .eh_bus_reset_handler
= aha1542_bus_reset
,
952 .eh_host_reset_handler
= aha1542_host_reset
,
953 .bios_param
= aha1542_biosparam
,
954 .can_queue
= AHA1542_MAILBOXES
,
957 .unchecked_isa_dma
= 1,
958 .use_clustering
= ENABLE_CLUSTERING
,
961 static int aha1542_isa_match(struct device
*pdev
, unsigned int ndev
)
963 struct Scsi_Host
*sh
= aha1542_hw_init(&driver_template
, pdev
, ndev
);
968 dev_set_drvdata(pdev
, sh
);
972 static int aha1542_isa_remove(struct device
*pdev
,
975 aha1542_release(dev_get_drvdata(pdev
));
976 dev_set_drvdata(pdev
, NULL
);
980 static struct isa_driver aha1542_isa_driver
= {
981 .match
= aha1542_isa_match
,
982 .remove
= aha1542_isa_remove
,
987 static int isa_registered
;
990 static const struct pnp_device_id aha1542_pnp_ids
[] = {
994 MODULE_DEVICE_TABLE(pnp
, aha1542_pnp_ids
);
996 static int aha1542_pnp_probe(struct pnp_dev
*pdev
, const struct pnp_device_id
*id
)
999 struct Scsi_Host
*sh
;
1001 for (indx
= 0; indx
< ARRAY_SIZE(io
); indx
++) {
1005 if (pnp_activate_dev(pdev
) < 0)
1008 io
[indx
] = pnp_port_start(pdev
, 0);
1010 /* The card can be queried for its DMA, we have
1011 the DMA set up that is enough */
1013 dev_info(&pdev
->dev
, "ISAPnP found an AHA1535 at I/O 0x%03X", io
[indx
]);
1016 sh
= aha1542_hw_init(&driver_template
, &pdev
->dev
, indx
);
1020 pnp_set_drvdata(pdev
, sh
);
1024 static void aha1542_pnp_remove(struct pnp_dev
*pdev
)
1026 aha1542_release(pnp_get_drvdata(pdev
));
1027 pnp_set_drvdata(pdev
, NULL
);
1030 static struct pnp_driver aha1542_pnp_driver
= {
1032 .id_table
= aha1542_pnp_ids
,
1033 .probe
= aha1542_pnp_probe
,
1034 .remove
= aha1542_pnp_remove
,
1036 static int pnp_registered
;
1037 #endif /* CONFIG_PNP */
1039 static int __init
aha1542_init(void)
1045 ret
= pnp_register_driver(&aha1542_pnp_driver
);
1050 ret
= isa_register_driver(&aha1542_isa_driver
, MAXBOARDS
);
1064 static void __exit
aha1542_exit(void)
1068 pnp_unregister_driver(&aha1542_pnp_driver
);
1071 isa_unregister_driver(&aha1542_isa_driver
);
1074 module_init(aha1542_init
);
1075 module_exit(aha1542_exit
);