3 * Low-level SCSI driver for sym53c416 chip.
4 * Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com)
8 * Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking
10 * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>]
12 * This program is free software; you can redistribute it and/or modify it
13 * under the terms of the GNU General Public License as published by the
14 * Free Software Foundation; either version 2, or (at your option) any
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
24 #include <linux/module.h>
25 #include <linux/kernel.h>
26 #include <linux/types.h>
27 #include <linux/string.h>
28 #include <linux/ioport.h>
29 #include <linux/sched.h>
30 #include <linux/interrupt.h>
31 #include <linux/delay.h>
32 #include <linux/proc_fs.h>
33 #include <linux/spinlock.h>
35 #include <asm/system.h>
37 #include <linux/blk.h>
38 #include <linux/version.h>
42 #include "sym53c416.h"
44 #define VERSION_STRING "Version 1.0.0"
46 #define TC_LOW 0x00 /* Transfer counter low */
47 #define TC_MID 0x01 /* Transfer counter mid */
48 #define SCSI_FIFO 0x02 /* SCSI FIFO register */
49 #define COMMAND_REG 0x03 /* Command Register */
50 #define STATUS_REG 0x04 /* Status Register (READ) */
51 #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */
52 #define INT_REG 0x05 /* Interrupt Register (READ) */
53 #define TOM 0x05 /* Time out multiplier (WRITE) */
54 #define STP 0x06 /* Synchronous Transfer period */
55 #define SYNC_OFFSET 0x07 /* Synchronous Offset */
56 #define CONF_REG_1 0x08 /* Configuration register 1 */
57 #define CONF_REG_2 0x0B /* Configuration register 2 */
58 #define CONF_REG_3 0x0C /* Configuration register 3 */
59 #define CONF_REG_4 0x0D /* Configuration register 4 */
60 #define TC_HIGH 0x0E /* Transfer counter high */
61 #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */
62 #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */
63 #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */
64 #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */
65 #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */
66 #define PIO_INT_REG 0x15 /* PIO interrupt register */
67 #define CONF_REG_5 0x16 /* Configuration register 5 */
68 #define FEATURE_EN 0x1D /* Feature Enable register */
70 /* Configuration register 1 entries: */
71 /* Bits 2-0: SCSI ID of host adapter */
72 #define SCM 0x80 /* Slow Cable Mode */
73 #define SRID 0x40 /* SCSI Reset Interrupt Disable */
74 #define PTM 0x20 /* Parity Test Mode */
75 #define EPC 0x10 /* Enable Parity Checking */
76 #define CTME 0x08 /* Special Test Mode */
78 /* Configuration register 2 entries: */
79 #define FE 0x40 /* Features Enable */
80 #define SCSI2 0x08 /* SCSI 2 Enable */
81 #define TBPA 0x04 /* Target Bad Parity Abort */
83 /* Configuration register 3 entries: */
84 #define IDMRC 0x80 /* ID Message Reserved Check */
85 #define QTE 0x40 /* Queue Tag Enable */
86 #define CDB10 0x20 /* Command Descriptor Block 10 */
87 #define FSCSI 0x10 /* FastSCSI */
88 #define FCLK 0x08 /* FastClock */
90 /* Configuration register 4 entries: */
91 #define RBS 0x08 /* Register bank select */
92 #define EAN 0x04 /* Enable Active Negotiation */
94 /* Configuration register 5 entries: */
95 #define LPSR 0x80 /* Lower Power SCSI Reset */
96 #define IE 0x20 /* Interrupt Enable */
97 #define LPM 0x02 /* Low Power Mode */
98 #define WSE0 0x01 /* 0WS Enable */
100 /* Interrupt register entries: */
101 #define SRST 0x80 /* SCSI Reset */
102 #define ILCMD 0x40 /* Illegal Command */
103 #define DIS 0x20 /* Disconnect */
104 #define BS 0x10 /* Bus Service */
105 #define FC 0x08 /* Function Complete */
106 #define RESEL 0x04 /* Reselected */
107 #define SI 0x03 /* Selection Interrupt */
109 /* Status Register Entries: */
110 #define SCI 0x80 /* SCSI Core Int */
111 #define GE 0x40 /* Gross Error */
112 #define PE 0x20 /* Parity Error */
113 #define TC 0x10 /* Terminal Count */
114 #define VGC 0x08 /* Valid Group Code */
115 #define PHBITS 0x07 /* Phase bits */
117 /* PIO Interrupt Register Entries: */
118 #define SCI 0x80 /* SCSI Core Int */
119 #define PFI 0x40 /* PIO FIFO Interrupt */
120 #define FULL 0x20 /* PIO FIFO Full */
121 #define EMPTY 0x10 /* PIO FIFO Empty */
122 #define CE 0x08 /* Collision Error */
123 #define OUE 0x04 /* Overflow / Underflow error */
124 #define FIE 0x02 /* Full Interrupt Enable */
125 #define EIE 0x01 /* Empty Interrupt Enable */
127 /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */
128 #define PHASE_DATA_OUT 0x00
129 #define PHASE_DATA_IN 0x01
130 #define PHASE_COMMAND 0x02
131 #define PHASE_STATUS 0x03
132 #define PHASE_RESERVED_1 0x04
133 #define PHASE_RESERVED_2 0x05
134 #define PHASE_MESSAGE_OUT 0x06
135 #define PHASE_MESSAGE_IN 0x07
137 /* SYM53C416 core commands */
139 #define FLUSH_FIFO 0x01
140 #define RESET_CHIP 0x02
141 #define RESET_SCSI_BUS 0x03
142 #define DISABLE_SEL_RESEL 0x45
143 #define RESEL_SEQ 0x40
144 #define SEL_WITHOUT_ATN_SEQ 0x41
145 #define SEL_WITH_ATN_SEQ 0x42
146 #define SEL_WITH_ATN_AND_STOP_SEQ 0x43
147 #define ENABLE_SEL_RESEL 0x44
148 #define SEL_WITH_ATN3_SEQ 0x46
149 #define RESEL3_SEQ 0x47
151 #define SND_STAT 0x21
152 #define SND_DATA 0x22
153 #define DISCONNECT_SEQ 0x23
154 #define TERMINATE_SEQ 0x24
155 #define TARGET_COMM_COMPLETE_SEQ 0x25
157 #define RECV_MSG_SEQ 0x28
158 #define RECV_CMD 0x29
159 #define RECV_DATA 0x2A
160 #define RECV_CMD_SEQ 0x2B
161 #define TARGET_ABORT_PIO 0x04
162 #define TRANSFER_INFORMATION 0x10
163 #define INIT_COMM_COMPLETE_SEQ 0x11
164 #define MSG_ACCEPTED 0x12
165 #define TRANSFER_PAD 0x18
167 #define RESET_ATN 0x1B
170 #define PIO_MODE 0x80
172 #define IO_RANGE 0x20 /* 0x00 - 0x1F */
173 #define ID "sym53c416"
174 #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */
176 #define READ_TIMEOUT 150
177 #define WRITE_TIMEOUT 150
181 #define sym53c416_base sym53c416
182 #define sym53c416_base_1 sym53c416_1
183 #define sym53c416_base_2 sym53c416_2
184 #define sym53c416_base_3 sym53c416_3
186 static unsigned short sym53c416_base
= 0;
187 static unsigned int sym53c416_irq
= 0;
188 static unsigned short sym53c416_base_1
= 0;
189 static unsigned int sym53c416_irq_1
= 0;
190 static unsigned short sym53c416_base_2
= 0;
191 static unsigned int sym53c416_irq_2
= 0;
192 static unsigned short sym53c416_base_3
= 0;
193 static unsigned int sym53c416_irq_3
= 0;
199 /* Macro for debugging purposes */
227 host hosts
[MAXHOSTS
] = {
228 {0, 0, SYM53C416_SCSI_ID
},
229 {0, 0, SYM53C416_SCSI_ID
},
230 {0, 0, SYM53C416_SCSI_ID
},
231 {0, 0, SYM53C416_SCSI_ID
}
234 static int host_index
= 0;
236 static char info
[120];
238 static Scsi_Cmnd
*current_command
= NULL
;
240 struct proc_dir_entry proc_scsi_sym53c416
= {PROC_SCSI_SYM53C416
, 7, ID
, S_IFDIR
| S_IRUGO
| S_IXUGO
, 2};
244 int probeaddrs
[] = {0x200, 0x220, 0x240, 0};
246 static void sym53c416_set_transfer_counter(int base
, unsigned int len
)
248 /* Program Transfer Counter */
249 outb(len
& 0x0000FF, base
+ TC_LOW
);
250 outb((len
& 0x00FF00) >> 8, base
+ TC_MID
);
251 outb((len
& 0xFF0000) >> 16, base
+ TC_HIGH
);
254 /* Returns the number of bytes read */
255 static __inline__
unsigned int sym53c416_read(int base
, unsigned char *buffer
, unsigned int len
)
257 unsigned int orig_len
= len
;
258 unsigned long flags
= 0;
259 unsigned int bytes_left
;
261 int timeout
= READ_TIMEOUT
;
266 while(len
&& timeout
)
268 bytes_left
= inb(base
+ PIO_FIFO_CNT
); /* Number of bytes in the PIO FIFO */
269 if(fastpio
&& bytes_left
> 3)
271 insl(base
+ PIO_FIFO_1
, buffer
, bytes_left
>> 2);
272 buffer
+= bytes_left
& 0xFC;
273 len
-= bytes_left
& 0xFC;
275 else if(bytes_left
> 0)
278 for(; bytes_left
> 0; bytes_left
--)
279 *(buffer
++) = inb(base
+ PIO_FIFO_1
);
283 i
= jiffies
+ timeout
;
284 restore_flags(flags
);
285 while(jiffies
< i
&& (inb(base
+ PIO_INT_REG
) & EMPTY
) && timeout
)
286 if(inb(base
+ PIO_INT_REG
) & SCI
)
290 if(inb(base
+ PIO_INT_REG
) & EMPTY
)
294 restore_flags(flags
);
295 return orig_len
- len
;
298 /* Returns the number of bytes written */
299 static __inline__
unsigned int sym53c416_write(int base
, unsigned char *buffer
, unsigned int len
)
301 unsigned int orig_len
= len
;
302 unsigned long flags
= 0;
303 unsigned int bufferfree
;
305 unsigned int timeout
= WRITE_TIMEOUT
;
310 while(len
&& timeout
)
312 bufferfree
= PIO_SIZE
- inb(base
+ PIO_FIFO_CNT
);
315 if(fastpio
&& bufferfree
> 3)
317 outsl(base
+ PIO_FIFO_1
, buffer
, bufferfree
>> 2);
318 buffer
+= bufferfree
& 0xFC;
319 len
-= bufferfree
& 0xFC;
321 else if(bufferfree
> 0)
324 for(; bufferfree
> 0; bufferfree
--)
325 outb(*(buffer
++), base
+ PIO_FIFO_1
);
329 i
= jiffies
+ timeout
;
330 restore_flags(flags
);
331 while(jiffies
< i
&& (inb(base
+ PIO_INT_REG
) & FULL
) && timeout
)
335 if(inb(base
+ PIO_INT_REG
) & FULL
)
339 restore_flags(flags
);
340 return orig_len
- len
;
343 static void sym53c416_intr_handle(int irq
, void *dev_id
, struct pt_regs
*regs
)
347 unsigned long flags
= 0;
348 unsigned char status_reg
, pio_int_reg
, int_reg
;
349 struct scatterlist
*sglist
;
350 unsigned int sgcount
;
351 unsigned int tot_trans
= 0;
353 /* We search the base address of the host adapter which caused the interrupt */
354 for(i
= 0; i
< host_index
&& !base
; i
++)
355 if(irq
== hosts
[i
].irq
)
356 base
= hosts
[i
].base
;
357 /* If no adapter found, we cannot handle the interrupt. Leave a message */
358 /* and continue. This should never happen... */
361 printk("sym53c416: No host adapter defined for interrupt %d\n", irq
);
364 /* Now we have the base address and we can start handling the interrupt */
367 status_reg
= inb(base
+ STATUS_REG
);
368 pio_int_reg
= inb(base
+ PIO_INT_REG
);
369 int_reg
= inb(base
+ INT_REG
);
370 restore_flags(flags
);
372 /* First, we handle error conditions */
373 if(int_reg
& SCI
) /* SCSI Reset */
375 printk("sym53c416: Warning: Reset received\n");
376 current_command
->SCp
.phase
= idle
;
377 current_command
->result
= DID_RESET
<< 16;
378 spin_lock_irqsave(&io_request_lock
, flags
);
379 current_command
->scsi_done(current_command
);
380 spin_unlock_irqrestore(&io_request_lock
, flags
);
383 if(int_reg
& ILCMD
) /* Illegal Command */
385 printk("sym53c416: Warning: Illegal Command: 0x%02x\n", inb(base
+ COMMAND_REG
));
386 current_command
->SCp
.phase
= idle
;
387 current_command
->result
= DID_ERROR
<< 16;
388 spin_lock_irqsave(&io_request_lock
, flags
);
389 current_command
->scsi_done(current_command
);
390 spin_unlock_irqrestore(&io_request_lock
, flags
);
393 if(status_reg
& GE
) /* Gross Error */
395 printk("sym53c416: Warning: Gross Error\n");
396 current_command
->SCp
.phase
= idle
;
397 current_command
->result
= DID_ERROR
<< 16;
398 spin_lock_irqsave(&io_request_lock
, flags
);
399 current_command
->scsi_done(current_command
);
400 spin_unlock_irqrestore(&io_request_lock
, flags
);
403 if(status_reg
& PE
) /* Parity Error */
405 printk("sym53c416: Warning: Parity Error\n");
406 current_command
->SCp
.phase
= idle
;
407 current_command
->result
= DID_PARITY
<< 16;
408 spin_lock_irqsave(&io_request_lock
, flags
);
409 current_command
->scsi_done(current_command
);
410 spin_unlock_irqrestore(&io_request_lock
, flags
);
413 if(pio_int_reg
& (CE
| OUE
))
415 printk("sym53c416: Warning: PIO Interrupt Error\n");
416 current_command
->SCp
.phase
= idle
;
417 current_command
->result
= DID_ERROR
<< 16;
418 spin_lock_irqsave(&io_request_lock
, flags
);
419 current_command
->scsi_done(current_command
);
420 spin_unlock_irqrestore(&io_request_lock
, flags
);
423 if(int_reg
& DIS
) /* Disconnect */
425 if(current_command
->SCp
.phase
!= message_in
)
426 current_command
->result
= DID_NO_CONNECT
<< 16;
428 current_command
->result
= (current_command
->SCp
.Status
& 0xFF) | ((current_command
->SCp
.Message
& 0xFF) << 8) | (DID_OK
<< 16);
429 current_command
->SCp
.phase
= idle
;
431 spin_lock_irqsave(&io_request_lock
, flags
);
432 current_command
->scsi_done(current_command
);
433 spin_unlock_irqrestore(&io_request_lock
, flags
);
436 /* Now we handle SCSI phases */
437 switch(status_reg
& PHBITS
) /* Filter SCSI phase out of status reg */
443 current_command
->SCp
.phase
= data_out
;
444 outb(FLUSH_FIFO
, base
+ COMMAND_REG
);
445 sym53c416_set_transfer_counter(base
, current_command
->request_bufflen
);
446 outb(TRANSFER_INFORMATION
| PIO_MODE
, base
+ COMMAND_REG
);
447 if(!current_command
->use_sg
)
448 tot_trans
= sym53c416_write(base
, current_command
->request_buffer
, current_command
->request_bufflen
);
451 sgcount
= current_command
->use_sg
;
452 sglist
= current_command
->request_buffer
;
455 tot_trans
+= sym53c416_write(base
, sglist
->address
, sglist
->length
);
459 if(tot_trans
< current_command
->underflow
)
460 printk("sym53c416: Warning: underflow, wrote %d bytes, request for %d bytes\n", tot_trans
, current_command
->underflow
);
468 current_command
->SCp
.phase
= data_in
;
469 outb(FLUSH_FIFO
, base
+ COMMAND_REG
);
470 sym53c416_set_transfer_counter(base
, current_command
->request_bufflen
);
471 outb(TRANSFER_INFORMATION
| PIO_MODE
, base
+ COMMAND_REG
);
472 if(!current_command
->use_sg
)
473 tot_trans
= sym53c416_read(base
, current_command
->request_buffer
, current_command
->request_bufflen
);
476 sgcount
= current_command
->use_sg
;
477 sglist
= current_command
->request_buffer
;
480 tot_trans
+= sym53c416_read(base
, sglist
->address
, sglist
->length
);
484 if(tot_trans
< current_command
->underflow
)
485 printk("sym53c416: Warning: underflow, read %d bytes, request for %d bytes\n", tot_trans
, current_command
->underflow
);
491 current_command
->SCp
.phase
= command_ph
;
492 printk("sym53c416: Warning: Unknown interrupt in command phase\n");
497 current_command
->SCp
.phase
= status_ph
;
498 outb(FLUSH_FIFO
, base
+ COMMAND_REG
);
499 outb(INIT_COMM_COMPLETE_SEQ
, base
+ COMMAND_REG
);
502 case PHASE_RESERVED_1
:
503 case PHASE_RESERVED_2
:
505 printk("sym53c416: Warning: Reserved phase\n");
508 case PHASE_MESSAGE_OUT
:
510 current_command
->SCp
.phase
= message_out
;
511 outb(SET_ATN
, base
+ COMMAND_REG
);
512 outb(MSG_ACCEPTED
, base
+ COMMAND_REG
);
515 case PHASE_MESSAGE_IN
:
517 current_command
->SCp
.phase
= message_in
;
518 current_command
->SCp
.Status
= inb(base
+ SCSI_FIFO
);
519 current_command
->SCp
.Message
= inb(base
+ SCSI_FIFO
);
520 if(current_command
->SCp
.Message
== SAVE_POINTERS
|| current_command
->SCp
.Message
== DISCONNECT
)
521 outb(SET_ATN
, base
+ COMMAND_REG
);
522 outb(MSG_ACCEPTED
, base
+ COMMAND_REG
);
528 static void sym53c416_init(int base
, int scsi_id
)
530 outb(RESET_CHIP
, base
+ COMMAND_REG
);
531 outb(NOOP
, base
+ COMMAND_REG
);
532 outb(0x99, base
+ TOM
); /* Time out of 250 ms */
533 outb(0x05, base
+ STP
);
534 outb(0x00, base
+ SYNC_OFFSET
);
535 outb(EPC
| scsi_id
, base
+ CONF_REG_1
);
536 outb(FE
| SCSI2
| TBPA
, base
+ CONF_REG_2
);
537 outb(IDMRC
| QTE
| CDB10
| FSCSI
| FCLK
, base
+ CONF_REG_3
);
538 outb(0x83 | EAN
, base
+ CONF_REG_4
);
539 outb(IE
| WSE0
, base
+ CONF_REG_5
);
540 outb(0, base
+ FEATURE_EN
);
543 static int sym53c416_probeirq(int base
, int scsi_id
)
547 /* Clear interrupt register */
549 /* Start probing for irq's */
550 irqs
= probe_irq_on();
552 sym53c416_init(base
, scsi_id
);
553 /* Cause interrupt */
554 outb(NOOP
, base
+ COMMAND_REG
);
555 outb(ILLEGAL
, base
+ COMMAND_REG
);
556 outb(0x07, base
+ DEST_BUS_ID
);
557 outb(0x00, base
+ DEST_BUS_ID
);
558 /* Wait for interrupt to occur */
560 while(i
> jiffies
&& !(inb(base
+ STATUS_REG
) & SCI
))
562 if(i
<= jiffies
) /* timed out */
564 /* Get occurred irq */
565 irq
= probe_irq_off(irqs
);
566 sym53c416_init(base
, scsi_id
);
570 /* Setup: sym53c416=base,irq */
571 void sym53c416_setup(char *str
, int *ints
)
575 if(host_index
>= MAXHOSTS
)
577 printk("sym53c416.c: Too many hosts defined\n");
581 if(ints
[0] < 1 || ints
[0] > 2)
583 printk("sym53c416.c: Wrong number of parameters:\n");
584 printk("sym53c416.c: usage: sym53c416=<base>[,<irq>]\n");
588 for(i
= 0; i
< host_index
&& i
>= 0; i
++)
589 if(hosts
[i
].base
== ints
[1])
593 hosts
[host_index
].base
= ints
[1];
594 hosts
[host_index
].irq
= (ints
[0] == 2)? ints
[2] : 0;
601 static int sym53c416_test(int base
)
603 outb(RESET_CHIP
, base
+ COMMAND_REG
);
604 outb(NOOP
, base
+ COMMAND_REG
);
605 if(inb(base
+ COMMAND_REG
) != NOOP
)
607 if(!inb(base
+ TC_HIGH
) || inb(base
+ TC_HIGH
) == 0xFF)
609 if((inb(base
+ PIO_INT_REG
) & (FULL
| EMPTY
| CE
| OUE
| FIE
| EIE
)) != EMPTY
)
614 void sym53c416_probe(void)
616 int *base
= probeaddrs
;
621 if(!check_region(*base
, IO_RANGE
) && sym53c416_test(*base
))
624 sym53c416_setup(NULL
, ints
);
628 int sym53c416_detect(Scsi_Host_Template
*tpnt
)
631 struct Scsi_Host
* shpnt
= NULL
;
641 ints
[1] = sym53c416_base
;
642 ints
[2] = sym53c416_irq
;
643 sym53c416_setup(NULL
, ints
);
647 ints
[1] = sym53c416_base_1
;
648 ints
[2] = sym53c416_irq_1
;
649 sym53c416_setup(NULL
, ints
);
653 ints
[1] = sym53c416_base_2
;
654 ints
[2] = sym53c416_irq_2
;
655 sym53c416_setup(NULL
, ints
);
659 ints
[1] = sym53c416_base_3
;
660 ints
[2] = sym53c416_irq_3
;
661 sym53c416_setup(NULL
, ints
);
665 printk("sym53c416.c: %s\n", VERSION_STRING
);
669 /* Now we register and set up each host adapter found... */
670 for(count
= 0, i
= 0; i
< host_index
; i
++)
671 if(!sym53c416_test(hosts
[i
].base
))
672 printk("No sym53c416 found at address 0x%03x\n", hosts
[i
].base
);
675 if(hosts
[i
].irq
== 0)
676 /* We don't have an irq yet, so we should probe for one */
677 if((hosts
[i
].irq
= sym53c416_probeirq(hosts
[i
].base
, hosts
[i
].scsi_id
)) == 0)
678 printk("irq autoprobing failed for sym53c416 at address 0x%03x\n", hosts
[i
].base
);
679 if(hosts
[i
].irq
&& !check_region(hosts
[i
].base
, IO_RANGE
))
681 shpnt
= scsi_register(tpnt
, 0);
684 /* Request for specified IRQ */
685 if(request_irq(hosts
[i
].irq
, sym53c416_intr_handle
, 0, ID
, NULL
))
687 restore_flags(flags
);
688 printk("Unable to assign IRQ %d\n", hosts
[i
].irq
);
689 scsi_unregister(shpnt
);
693 /* Inform the kernel of our IO range */
694 request_region(hosts
[i
].base
, IO_RANGE
, ID
);
695 shpnt
->unique_id
= hosts
[i
].base
;
696 shpnt
->io_port
= hosts
[i
].base
;
697 shpnt
->n_io_port
= IO_RANGE
;
698 shpnt
->irq
= hosts
[i
].irq
;
699 shpnt
->this_id
= hosts
[i
].scsi_id
;
700 sym53c416_init(hosts
[i
].base
, hosts
[i
].scsi_id
);
702 restore_flags(flags
);
709 const char *sym53c416_info(struct Scsi_Host
*SChost
)
712 int base
= SChost
->io_port
;
713 int irq
= SChost
->irq
;
715 int rev
= inb(base
+ TC_HIGH
);
717 for(i
= 0; i
< host_index
; i
++)
718 if(hosts
[i
].base
== base
)
719 scsi_id
= hosts
[i
].scsi_id
;
720 sprintf(info
, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev
, base
, irq
, scsi_id
, (fastpio
)? "fast" : "slow");
724 int sym53c416_queuecommand(Scsi_Cmnd
*SCpnt
, void (*done
)(Scsi_Cmnd
*))
727 unsigned long flags
= 0;
730 /* Store base register as we can have more than one controller in the system */
731 base
= SCpnt
->host
->io_port
;
732 current_command
= SCpnt
; /* set current command */
733 current_command
->scsi_done
= done
; /* set ptr to done function */
734 current_command
->SCp
.phase
= command_ph
; /* currect phase is the command phase */
735 current_command
->SCp
.Status
= 0;
736 current_command
->SCp
.Message
= 0;
740 outb(SCpnt
->target
, base
+ DEST_BUS_ID
); /* Set scsi id target */
741 outb(FLUSH_FIFO
, base
+ COMMAND_REG
); /* Flush SCSI and PIO FIFO's */
742 /* Write SCSI command into the SCSI fifo */
743 for(i
= 0; i
< SCpnt
->cmd_len
; i
++)
744 outb(SCpnt
->cmnd
[i
], base
+ SCSI_FIFO
);
745 /* Start selection sequence */
746 outb(SEL_WITHOUT_ATN_SEQ
, base
+ COMMAND_REG
);
747 /* Now an interrupt will be generated which we will catch in out interrupt routine */
748 restore_flags(flags
);
752 static void internal_done(Scsi_Cmnd
*SCpnt
)
757 int sym53c416_command(Scsi_Cmnd
*SCpnt
)
759 sym53c416_queuecommand(SCpnt
, internal_done
);
760 SCpnt
->SCp
.Status
= 0;
761 while(!SCpnt
->SCp
.Status
)
763 return SCpnt
->result
;
766 int sym53c416_abort(Scsi_Cmnd
*SCpnt
)
768 printk("sym53c416_abort\n");
770 /* We don't know how to abort for the moment */
771 return SCSI_ABORT_SNOOZE
;
774 int sym53c416_reset(Scsi_Cmnd
*SCpnt
, unsigned int reset_flags
)
780 printk("sym53c416_reset\n");
781 base
= SCpnt
->host
->io_port
;
783 for(i
= 0; i
< host_index
&& scsi_id
!= -1; i
++)
784 if(hosts
[i
].base
== base
)
785 scsi_id
= hosts
[i
].scsi_id
;
786 outb(RESET_CHIP
, base
+ COMMAND_REG
);
787 outb(NOOP
| PIO_MODE
, base
+ COMMAND_REG
);
788 outb(RESET_SCSI_BUS
, base
+ COMMAND_REG
);
789 sym53c416_init(base
, scsi_id
);
790 return SCSI_RESET_PENDING
;
793 int sym53c416_bios_param(Disk
*disk
, kdev_t dev
, int *ip
)
797 size
= disk
->capacity
;
798 ip
[0] = 64; /* heads */
799 ip
[1] = 32; /* sectors */
800 if((ip
[2] = size
>> 11) > 1024) /* cylinders, test for big disk */
802 ip
[0] = 255; /* heads */
803 ip
[1] = 63; /* sectors */
804 ip
[2] = size
/ (255 * 63); /* cylinders */
809 /* Loadable module support */
812 #if LINUX_VERSION_CODE >= LinuxVersionCode(2,1,26)
813 MODULE_AUTHOR("Lieven Willems");
814 MODULE_PARM(sym53c416
, "1-2i");
815 MODULE_PARM(sym53c416_1
, "1-2i");
816 MODULE_PARM(sym53c416_2
, "1-2i");
817 MODULE_PARM(sym53c416_3
, "1-2i");
820 Scsi_Host_Template driver_template
= SYM53C416
;
822 #include "scsi_module.c"