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
9 * Alan Cox <alan@lxorguk.ukuu.org.uk> : Cleaned up code formatting
10 * Fixed an irq locking bug
11 * Added ISAPnP support
12 * Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates
13 * Added another card with ISAPnP support
15 * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>]
17 * This program is free software; you can redistribute it and/or modify it
18 * under the terms of the GNU General Public License as published by the
19 * Free Software Foundation; either version 2, or (at your option) any
22 * This program is distributed in the hope that it will be useful, but
23 * WITHOUT ANY WARRANTY; without even the implied warranty of
24 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
25 * General Public License for more details.
29 #include <linux/module.h>
30 #include <linux/kernel.h>
31 #include <linux/types.h>
32 #include <linux/init.h>
33 #include <linux/string.h>
34 #include <linux/ioport.h>
35 #include <linux/interrupt.h>
36 #include <linux/delay.h>
37 #include <linux/proc_fs.h>
38 #include <linux/spinlock.h>
40 #include <asm/system.h>
42 #include <linux/blkdev.h>
43 #include <linux/isapnp.h>
45 #include <scsi/scsi_host.h>
46 #include "sym53c416.h"
48 #define VERSION_STRING "Version 1.0.0-ac"
50 #define TC_LOW 0x00 /* Transfer counter low */
51 #define TC_MID 0x01 /* Transfer counter mid */
52 #define SCSI_FIFO 0x02 /* SCSI FIFO register */
53 #define COMMAND_REG 0x03 /* Command Register */
54 #define STATUS_REG 0x04 /* Status Register (READ) */
55 #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */
56 #define INT_REG 0x05 /* Interrupt Register (READ) */
57 #define TOM 0x05 /* Time out multiplier (WRITE) */
58 #define STP 0x06 /* Synchronous Transfer period */
59 #define SYNC_OFFSET 0x07 /* Synchronous Offset */
60 #define CONF_REG_1 0x08 /* Configuration register 1 */
61 #define CONF_REG_2 0x0B /* Configuration register 2 */
62 #define CONF_REG_3 0x0C /* Configuration register 3 */
63 #define CONF_REG_4 0x0D /* Configuration register 4 */
64 #define TC_HIGH 0x0E /* Transfer counter high */
65 #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */
66 #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */
67 #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */
68 #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */
69 #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */
70 #define PIO_INT_REG 0x15 /* PIO interrupt register */
71 #define CONF_REG_5 0x16 /* Configuration register 5 */
72 #define FEATURE_EN 0x1D /* Feature Enable register */
74 /* Configuration register 1 entries: */
75 /* Bits 2-0: SCSI ID of host adapter */
76 #define SCM 0x80 /* Slow Cable Mode */
77 #define SRID 0x40 /* SCSI Reset Interrupt Disable */
78 #define PTM 0x20 /* Parity Test Mode */
79 #define EPC 0x10 /* Enable Parity Checking */
80 #define CTME 0x08 /* Special Test Mode */
82 /* Configuration register 2 entries: */
83 #define FE 0x40 /* Features Enable */
84 #define SCSI2 0x08 /* SCSI 2 Enable */
85 #define TBPA 0x04 /* Target Bad Parity Abort */
87 /* Configuration register 3 entries: */
88 #define IDMRC 0x80 /* ID Message Reserved Check */
89 #define QTE 0x40 /* Queue Tag Enable */
90 #define CDB10 0x20 /* Command Descriptor Block 10 */
91 #define FSCSI 0x10 /* FastSCSI */
92 #define FCLK 0x08 /* FastClock */
94 /* Configuration register 4 entries: */
95 #define RBS 0x08 /* Register bank select */
96 #define EAN 0x04 /* Enable Active Negotiation */
98 /* Configuration register 5 entries: */
99 #define LPSR 0x80 /* Lower Power SCSI Reset */
100 #define IE 0x20 /* Interrupt Enable */
101 #define LPM 0x02 /* Low Power Mode */
102 #define WSE0 0x01 /* 0WS Enable */
104 /* Interrupt register entries: */
105 #define SRST 0x80 /* SCSI Reset */
106 #define ILCMD 0x40 /* Illegal Command */
107 #define DIS 0x20 /* Disconnect */
108 #define BS 0x10 /* Bus Service */
109 #define FC 0x08 /* Function Complete */
110 #define RESEL 0x04 /* Reselected */
111 #define SI 0x03 /* Selection Interrupt */
113 /* Status Register Entries: */
114 #define SCI 0x80 /* SCSI Core Int */
115 #define GE 0x40 /* Gross Error */
116 #define PE 0x20 /* Parity Error */
117 #define TC 0x10 /* Terminal Count */
118 #define VGC 0x08 /* Valid Group Code */
119 #define PHBITS 0x07 /* Phase bits */
121 /* PIO Interrupt Register Entries: */
122 #define SCI 0x80 /* SCSI Core Int */
123 #define PFI 0x40 /* PIO FIFO Interrupt */
124 #define FULL 0x20 /* PIO FIFO Full */
125 #define EMPTY 0x10 /* PIO FIFO Empty */
126 #define CE 0x08 /* Collision Error */
127 #define OUE 0x04 /* Overflow / Underflow error */
128 #define FIE 0x02 /* Full Interrupt Enable */
129 #define EIE 0x01 /* Empty Interrupt Enable */
131 /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */
132 #define PHASE_DATA_OUT 0x00
133 #define PHASE_DATA_IN 0x01
134 #define PHASE_COMMAND 0x02
135 #define PHASE_STATUS 0x03
136 #define PHASE_RESERVED_1 0x04
137 #define PHASE_RESERVED_2 0x05
138 #define PHASE_MESSAGE_OUT 0x06
139 #define PHASE_MESSAGE_IN 0x07
141 /* SYM53C416 core commands */
143 #define FLUSH_FIFO 0x01
144 #define RESET_CHIP 0x02
145 #define RESET_SCSI_BUS 0x03
146 #define DISABLE_SEL_RESEL 0x45
147 #define RESEL_SEQ 0x40
148 #define SEL_WITHOUT_ATN_SEQ 0x41
149 #define SEL_WITH_ATN_SEQ 0x42
150 #define SEL_WITH_ATN_AND_STOP_SEQ 0x43
151 #define ENABLE_SEL_RESEL 0x44
152 #define SEL_WITH_ATN3_SEQ 0x46
153 #define RESEL3_SEQ 0x47
155 #define SND_STAT 0x21
156 #define SND_DATA 0x22
157 #define DISCONNECT_SEQ 0x23
158 #define TERMINATE_SEQ 0x24
159 #define TARGET_COMM_COMPLETE_SEQ 0x25
161 #define RECV_MSG_SEQ 0x28
162 #define RECV_CMD 0x29
163 #define RECV_DATA 0x2A
164 #define RECV_CMD_SEQ 0x2B
165 #define TARGET_ABORT_PIO 0x04
166 #define TRANSFER_INFORMATION 0x10
167 #define INIT_COMM_COMPLETE_SEQ 0x11
168 #define MSG_ACCEPTED 0x12
169 #define TRANSFER_PAD 0x18
171 #define RESET_ATN 0x1B
174 #define PIO_MODE 0x80
176 #define IO_RANGE 0x20 /* 0x00 - 0x1F */
177 #define ID "sym53c416" /* Attention: copied to the sym53c416.h */
178 #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */
180 #define READ_TIMEOUT 150
181 #define WRITE_TIMEOUT 150
185 #define sym53c416_base sym53c416
186 #define sym53c416_base_1 sym53c416_1
187 #define sym53c416_base_2 sym53c416_2
188 #define sym53c416_base_3 sym53c416_3
190 static unsigned int sym53c416_base[2];
191 static unsigned int sym53c416_base_1[2];
192 static unsigned int sym53c416_base_2[2];
193 static unsigned int sym53c416_base_3[2];
199 #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer)))
219 static host hosts[MAXHOSTS] = {
220 {0, 0, SYM53C416_SCSI_ID},
221 {0, 0, SYM53C416_SCSI_ID},
222 {0, 0, SYM53C416_SCSI_ID},
223 {0, 0, SYM53C416_SCSI_ID}
226 static int host_index = 0;
227 static char info[120];
228 static Scsi_Cmnd *current_command = NULL;
229 static int fastpio = 1;
231 static int probeaddrs[] = {0x200, 0x220, 0x240, 0};
233 static void sym53c416_set_transfer_counter(int base, unsigned int len)
235 /* Program Transfer Counter */
236 outb(len & 0x0000FF, base + TC_LOW);
237 outb((len & 0x00FF00) >> 8, base + TC_MID);
238 outb((len & 0xFF0000) >> 16, base + TC_HIGH);
241 static DEFINE_SPINLOCK(sym53c416_lock);
243 /* Returns the number of bytes read */
244 static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len)
246 unsigned int orig_len = len;
247 unsigned long flags = 0;
248 unsigned int bytes_left;
250 int timeout = READ_TIMEOUT;
253 spin_lock_irqsave(&sym53c416_lock, flags);
254 while(len && timeout)
256 bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */
257 if(fastpio && bytes_left > 3)
259 insl(base + PIO_FIFO_1, buffer, bytes_left >> 2);
260 buffer += bytes_left & 0xFC;
261 len -= bytes_left & 0xFC;
263 else if(bytes_left > 0)
266 for(; bytes_left > 0; bytes_left--)
267 *(buffer++) = inb(base + PIO_FIFO_1);
271 i = jiffies + timeout;
272 spin_unlock_irqrestore(&sym53c416_lock, flags);
273 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout)
274 if(inb(base + PIO_INT_REG) & SCI)
276 spin_lock_irqsave(&sym53c416_lock, flags);
277 if(inb(base + PIO_INT_REG) & EMPTY)
281 spin_unlock_irqrestore(&sym53c416_lock, flags);
282 return orig_len - len;
285 /* Returns the number of bytes written */
286 static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len)
288 unsigned int orig_len = len;
289 unsigned long flags = 0;
290 unsigned int bufferfree;
292 unsigned int timeout = WRITE_TIMEOUT;
295 spin_lock_irqsave(&sym53c416_lock, flags);
296 while(len && timeout)
298 bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT);
301 if(fastpio && bufferfree > 3)
303 outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2);
304 buffer += bufferfree & 0xFC;
305 len -= bufferfree & 0xFC;
307 else if(bufferfree > 0)
310 for(; bufferfree > 0; bufferfree--)
311 outb(*(buffer++), base + PIO_FIFO_1);
315 i = jiffies + timeout;
316 spin_unlock_irqrestore(&sym53c416_lock, flags);
317 while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout)
319 spin_lock_irqsave(&sym53c416_lock, flags);
320 if(inb(base + PIO_INT_REG) & FULL)
324 spin_unlock_irqrestore(&sym53c416_lock, flags);
325 return orig_len - len;
328 static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id)
330 struct Scsi_Host *dev = dev_id;
331 int base = dev->io_port;
333 unsigned long flags = 0;
334 unsigned char status_reg, pio_int_reg, int_reg;
335 struct scatterlist *sg;
336 unsigned int tot_trans = 0;
338 spin_lock_irqsave(dev->host_lock,flags);
339 status_reg = inb(base + STATUS_REG);
340 pio_int_reg = inb(base + PIO_INT_REG);
341 int_reg = inb(base + INT_REG);
342 spin_unlock_irqrestore(dev->host_lock, flags);
344 /* First, we handle error conditions */
345 if(int_reg & SCI) /* SCSI Reset */
347 printk(KERN_DEBUG "sym53c416: Reset received\n");
348 current_command->SCp.phase = idle;
349 current_command->result = DID_RESET << 16;
350 spin_lock_irqsave(dev->host_lock, flags);
351 current_command->scsi_done(current_command);
352 spin_unlock_irqrestore(dev->host_lock, flags);
355 if(int_reg & ILCMD) /* Illegal Command */
357 printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG));
358 current_command->SCp.phase = idle;
359 current_command->result = DID_ERROR << 16;
360 spin_lock_irqsave(dev->host_lock, flags);
361 current_command->scsi_done(current_command);
362 spin_unlock_irqrestore(dev->host_lock, flags);
365 if(status_reg & GE) /* Gross Error */
367 printk(KERN_WARNING "sym53c416: Controller reports gross error.\n");
368 current_command->SCp.phase = idle;
369 current_command->result = DID_ERROR << 16;
370 spin_lock_irqsave(dev->host_lock, flags);
371 current_command->scsi_done(current_command);
372 spin_unlock_irqrestore(dev->host_lock, flags);
375 if(status_reg & PE) /* Parity Error */
377 printk(KERN_WARNING "sym53c416:SCSI parity error.\n");
378 current_command->SCp.phase = idle;
379 current_command->result = DID_PARITY << 16;
380 spin_lock_irqsave(dev->host_lock, flags);
381 current_command->scsi_done(current_command);
382 spin_unlock_irqrestore(dev->host_lock, flags);
385 if(pio_int_reg & (CE | OUE))
387 printk(KERN_WARNING "sym53c416: PIO interrupt error.\n");
388 current_command->SCp.phase = idle;
389 current_command->result = DID_ERROR << 16;
390 spin_lock_irqsave(dev->host_lock, flags);
391 current_command->scsi_done(current_command);
392 spin_unlock_irqrestore(dev->host_lock, flags);
395 if(int_reg & DIS) /* Disconnect */
397 if(current_command->SCp.phase != message_in)
398 current_command->result = DID_NO_CONNECT << 16;
400 current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16);
401 current_command->SCp.phase = idle;
402 spin_lock_irqsave(dev->host_lock, flags);
403 current_command->scsi_done(current_command);
404 spin_unlock_irqrestore(dev->host_lock, flags);
407 /* Now we handle SCSI phases */
409 switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */
415 current_command->SCp.phase = data_out;
416 outb(FLUSH_FIFO, base + COMMAND_REG);
417 sym53c416_set_transfer_counter(base,
418 scsi_bufflen(current_command));
419 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
421 scsi_for_each_sg(current_command,
422 sg, scsi_sg_count(current_command), i) {
423 tot_trans += sym53c416_write(base,
427 if(tot_trans < current_command->underflow)
428 printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
437 current_command->SCp.phase = data_in;
438 outb(FLUSH_FIFO, base + COMMAND_REG);
439 sym53c416_set_transfer_counter(base,
440 scsi_bufflen(current_command));
442 outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG);
444 scsi_for_each_sg(current_command,
445 sg, scsi_sg_count(current_command), i) {
446 tot_trans += sym53c416_read(base,
450 if(tot_trans < current_command->underflow)
451 printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow);
458 current_command->SCp.phase = command_ph;
459 printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n");
465 current_command->SCp.phase = status_ph;
466 outb(FLUSH_FIFO, base + COMMAND_REG);
467 outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG);
471 case PHASE_RESERVED_1:
472 case PHASE_RESERVED_2:
474 printk(KERN_ERR "sym53c416: Reserved phase occurred.\n");
478 case PHASE_MESSAGE_OUT:
480 current_command->SCp.phase = message_out;
481 outb(SET_ATN, base + COMMAND_REG);
482 outb(MSG_ACCEPTED, base + COMMAND_REG);
486 case PHASE_MESSAGE_IN:
488 current_command->SCp.phase = message_in;
489 current_command->SCp.Status = inb(base + SCSI_FIFO);
490 current_command->SCp.Message = inb(base + SCSI_FIFO);
491 if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT)
492 outb(SET_ATN, base + COMMAND_REG);
493 outb(MSG_ACCEPTED, base + COMMAND_REG);
501 static void sym53c416_init(int base, int scsi_id)
503 outb(RESET_CHIP, base + COMMAND_REG);
504 outb(NOOP, base + COMMAND_REG);
505 outb(0x99, base + TOM); /* Time out of 250 ms */
506 outb(0x05, base + STP);
507 outb(0x00, base + SYNC_OFFSET);
508 outb(EPC | scsi_id, base + CONF_REG_1);
509 outb(FE | SCSI2 | TBPA, base + CONF_REG_2);
510 outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3);
511 outb(0x83 | EAN, base + CONF_REG_4);
512 outb(IE | WSE0, base + CONF_REG_5);
513 outb(0, base + FEATURE_EN);
516 static int sym53c416_probeirq(int base, int scsi_id)
521 /* Clear interrupt register */
523 /* Start probing for irq's */
524 irqs = probe_irq_on();
526 sym53c416_init(base, scsi_id);
527 /* Cause interrupt */
528 outb(NOOP, base + COMMAND_REG);
529 outb(ILLEGAL, base + COMMAND_REG);
530 outb(0x07, base + DEST_BUS_ID);
531 outb(0x00, base + DEST_BUS_ID);
532 /* Wait for interrupt to occur */
534 while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI))
536 if(time_before_eq(i, jiffies)) /* timed out */
538 /* Get occurred irq */
539 irq = probe_irq_off(irqs);
540 sym53c416_init(base, scsi_id);
544 /* Setup: sym53c416=base,irq */
545 void sym53c416_setup(char *str, int *ints)
549 if(host_index >= MAXHOSTS)
551 printk(KERN_WARNING "sym53c416: Too many hosts defined\n");
554 if(ints[0] < 1 || ints[0] > 2)
556 printk(KERN_ERR "sym53c416: Wrong number of parameters:\n");
557 printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n");
560 for(i = 0; i < host_index && i >= 0; i++)
561 if(hosts[i].base == ints[1])
565 hosts[host_index].base = ints[1];
566 hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0;
571 static int sym53c416_test(int base)
573 outb(RESET_CHIP, base + COMMAND_REG);
574 outb(NOOP, base + COMMAND_REG);
575 if(inb(base + COMMAND_REG) != NOOP)
577 if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF)
579 if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY)
585 static struct isapnp_device_id id_table[] __devinitdata = {
586 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
587 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 },
588 { ISAPNP_ANY_ID, ISAPNP_ANY_ID,
589 ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 },
590 { ISAPNP_DEVICE_SINGLE_END }
593 MODULE_DEVICE_TABLE(isapnp, id_table);
595 static void sym53c416_probe(void)
597 int *base = probeaddrs;
601 for(; *base; base++) {
602 if (request_region(*base, IO_RANGE, ID)) {
603 if (sym53c416_test(*base)) {
605 sym53c416_setup(NULL, ints);
607 release_region(*base, IO_RANGE);
612 int __init sym53c416_detect(struct scsi_host_template *tpnt)
615 struct Scsi_Host * shpnt = NULL;
618 struct pnp_dev *idev = NULL;
624 if(sym53c416_base[0])
626 ints[1] = sym53c416_base[0];
627 ints[2] = sym53c416_base[1];
628 sym53c416_setup(NULL, ints);
630 if(sym53c416_base_1[0])
632 ints[1] = sym53c416_base_1[0];
633 ints[2] = sym53c416_base_1[1];
634 sym53c416_setup(NULL, ints);
636 if(sym53c416_base_2[0])
638 ints[1] = sym53c416_base_2[0];
639 ints[2] = sym53c416_base_2[1];
640 sym53c416_setup(NULL, ints);
642 if(sym53c416_base_3[0])
644 ints[1] = sym53c416_base_3[0];
645 ints[2] = sym53c416_base_3[1];
646 sym53c416_setup(NULL, ints);
649 printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING);
651 for (i=0; id_table[i].vendor != 0; i++) {
652 while((idev=pnp_find_dev(NULL, id_table[i].vendor,
653 id_table[i].function, idev))!=NULL)
657 if(pnp_device_attach(idev)<0)
659 printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n");
662 if(pnp_activate_dev(idev) < 0)
664 printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n");
665 pnp_device_detach(idev);
671 i[1] = pnp_port_start(idev, 0);
672 i[2] = pnp_irq(idev, 0);
674 printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n",
676 sym53c416_setup(NULL, i);
681 /* Now we register and set up each host adapter found... */
682 for(count = 0, i = 0; i < host_index; i++) {
683 if (!request_region(hosts[i].base, IO_RANGE, ID))
685 if (!sym53c416_test(hosts[i].base)) {
686 printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base);
687 goto fail_release_region;
690 /* We don't have an irq yet, so we should probe for one */
692 hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id);
694 goto fail_release_region;
696 shpnt = scsi_register(tpnt, 0);
698 goto fail_release_region;
699 /* Request for specified IRQ */
700 if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt))
703 spin_lock_irqsave(&sym53c416_lock, flags);
704 shpnt->unique_id = hosts[i].base;
705 shpnt->io_port = hosts[i].base;
706 shpnt->n_io_port = IO_RANGE;
707 shpnt->irq = hosts[i].irq;
708 shpnt->this_id = hosts[i].scsi_id;
709 sym53c416_init(hosts[i].base, hosts[i].scsi_id);
711 spin_unlock_irqrestore(&sym53c416_lock, flags);
715 scsi_unregister(shpnt);
717 release_region(hosts[i].base, IO_RANGE);
722 const char *sym53c416_info(struct Scsi_Host *SChost)
725 int base = SChost->io_port;
726 int irq = SChost->irq;
728 int rev = inb(base + TC_HIGH);
730 for(i = 0; i < host_index; i++)
731 if(hosts[i].base == base)
732 scsi_id = hosts[i].scsi_id;
733 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");
737 static int sym53c416_queuecommand_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *))
740 unsigned long flags = 0;
743 /* Store base register as we can have more than one controller in the system */
744 base = SCpnt->device->host->io_port;
745 current_command = SCpnt; /* set current command */
746 current_command->scsi_done = done; /* set ptr to done function */
747 current_command->SCp.phase = command_ph; /* currect phase is the command phase */
748 current_command->SCp.Status = 0;
749 current_command->SCp.Message = 0;
751 spin_lock_irqsave(&sym53c416_lock, flags);
752 outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */
753 outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */
754 /* Write SCSI command into the SCSI fifo */
755 for(i = 0; i < SCpnt->cmd_len; i++)
756 outb(SCpnt->cmnd[i], base + SCSI_FIFO);
757 /* Start selection sequence */
758 outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG);
759 /* Now an interrupt will be generated which we will catch in out interrupt routine */
760 spin_unlock_irqrestore(&sym53c416_lock, flags);
764 DEF_SCSI_QCMD(sym53c416_queuecommand)
766 static int sym53c416_host_reset(Scsi_Cmnd *SCpnt)
773 spin_lock_irqsave(&sym53c416_lock, flags);
775 /* printk("sym53c416_reset\n"); */
776 base = SCpnt->device->host->io_port;
777 /* search scsi_id - fixme, we shouldn't need to iterate for this! */
778 for(i = 0; i < host_index && scsi_id == -1; i++)
779 if(hosts[i].base == base)
780 scsi_id = hosts[i].scsi_id;
781 outb(RESET_CHIP, base + COMMAND_REG);
782 outb(NOOP | PIO_MODE, base + COMMAND_REG);
783 outb(RESET_SCSI_BUS, base + COMMAND_REG);
784 sym53c416_init(base, scsi_id);
786 spin_unlock_irqrestore(&sym53c416_lock, flags);
790 static int sym53c416_release(struct Scsi_Host *shost)
793 free_irq(shost->irq, shost);
794 if (shost->io_port && shost->n_io_port)
795 release_region(shost->io_port, shost->n_io_port);
799 static int sym53c416_bios_param(struct scsi_device *sdev,
800 struct block_device *dev,
801 sector_t capacity, int *ip)
806 ip[0] = 64; /* heads */
807 ip[1] = 32; /* sectors */
808 if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */
810 ip[0] = 255; /* heads */
811 ip[1] = 63; /* sectors */
812 ip[2] = size / (255 * 63); /* cylinders */
817 /* Loadable module support */
820 MODULE_AUTHOR("Lieven Willems");
821 MODULE_LICENSE("GPL");
823 module_param_array(sym53c416, uint, NULL, 0);
824 module_param_array(sym53c416_1, uint, NULL, 0);
825 module_param_array(sym53c416_2, uint, NULL, 0);
826 module_param_array(sym53c416_3, uint, NULL, 0);
830 static struct scsi_host_template driver_template = {
831 .proc_name = "sym53c416",
832 .name = "Symbios Logic 53c416",
833 .detect = sym53c416_detect,
834 .info = sym53c416_info,
835 .queuecommand = sym53c416_queuecommand,
836 .eh_host_reset_handler =sym53c416_host_reset,
837 .release = sym53c416_release,
838 .bios_param = sym53c416_bios_param,
840 .this_id = SYM53C416_SCSI_ID,
843 .unchecked_isa_dma = 1,
844 .use_clustering = ENABLE_CLUSTERING,
846 #include "scsi_module.c"