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gerrit-public.fairphone.software / kernel / msm-4.9 / a8d995c99ef56a3dbcdbe291bb71658bf00e9ad6 / . / drivers / scsi / initio.c
blob: ea6f3c0e05d9632a148e2b6a03c14bbc66a20722 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1/**************************************************************************
2 * Initio 9100 device driver for Linux.
3 *
4 * Copyright (c) 1994-1998 Initio Corporation
5 * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
6 * All rights reserved.
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2, or (at your option)
11 * any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, write to
20 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
21 *
22 * --------------------------------------------------------------------------
23 *
24 * Redistribution and use in source and binary forms, with or without
25 * modification, are permitted provided that the following conditions
26 * are met:
27 * 1. Redistributions of source code must retain the above copyright
28 * notice, this list of conditions, and the following disclaimer,
29 * without modification, immediately at the beginning of the file.
30 * 2. Redistributions in binary form must reproduce the above copyright
31 * notice, this list of conditions and the following disclaimer in the
32 * documentation and/or other materials provided with the distribution.
33 * 3. The name of the author may not be used to endorse or promote products
34 * derived from this software without specific prior written permission.
35 *
36 * Where this Software is combined with software released under the terms of
37 * the GNU General Public License ("GPL") and the terms of the GPL would require the
38 * combined work to also be released under the terms of the GPL, the terms
39 * and conditions of this License will apply in addition to those of the
40 * GPL with the exception of any terms or conditions of this License that
41 * conflict with, or are expressly prohibited by, the GPL.
42 *
43 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
44 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
45 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
46 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
47 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
48 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
49 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
50 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
51 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
52 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
53 * SUCH DAMAGE.
54 *
55 *************************************************************************
56 *
57 * DESCRIPTION:
58 *
59 * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host
60 * adapters
61 *
62 * 08/06/97 hc - v1.01h
63 * - Support inic-940 and inic-935
64 * 09/26/97 hc - v1.01i
65 * - Make correction from J.W. Schultz suggestion
66 * 10/13/97 hc - Support reset function
67 * 10/21/97 hc - v1.01j
68 * - Support 32 LUN (SCSI 3)
69 * 01/14/98 hc - v1.01k
70 * - Fix memory allocation problem
71 * 03/04/98 hc - v1.01l
72 * - Fix tape rewind which will hang the system problem
73 * - Set can_queue to tul_num_scb
74 * 06/25/98 hc - v1.01m
75 * - Get it work for kernel version >= 2.1.75
76 * - Dynamic assign SCSI bus reset holding time in init_tulip()
77 * 07/02/98 hc - v1.01n
78 * - Support 0002134A
79 * 08/07/98 hc - v1.01o
80 * - Change the tul_abort_srb routine to use scsi_done. <01>
81 * 09/07/98 hl - v1.02
82 * - Change the INI9100U define and proc_dir_entry to
83 * reflect the newer Kernel 2.1.118, but the v1.o1o
84 * should work with Kernel 2.1.118.
85 * 09/20/98 wh - v1.02a
86 * - Support Abort command.
87 * - Handle reset routine.
88 * 09/21/98 hl - v1.03
89 * - remove comments.
90 * 12/09/98 bv - v1.03a
91 * - Removed unused code
92 * 12/13/98 bv - v1.03b
93 * - Remove cli() locking for kernels >= 2.1.95. This uses
94 * spinlocks to serialize access to the pSRB_head and
95 * pSRB_tail members of the HCS structure.
96 * 09/01/99 bv - v1.03d
97 * - Fixed a deadlock problem in SMP.
98 * 21/01/99 bv - v1.03e
99 * - Add support for the Domex 3192U PCI SCSI
100 * This is a slightly modified patch by
101 * Brian Macy <bmacy@sunshinecomputing.com>
102 * 22/02/99 bv - v1.03f
103 * - Didn't detect the INIC-950 in 2.0.x correctly.
104 * Now fixed.
105 * 05/07/99 bv - v1.03g
106 * - Changed the assumption that HZ = 100
107 * 10/17/03 mc - v1.04
108 * - added new DMA API support
109 * 06/01/04 jmd - v1.04a
110 * - Re-add reset_bus support
111 **************************************************************************/
112
113#include <linux/module.h>
114#include <linux/errno.h>
115#include <linux/delay.h>
116#include <linux/pci.h>
117#include <linux/init.h>
118#include <linux/blkdev.h>
119#include <linux/spinlock.h>
120#include <linux/stat.h>
121#include <linux/config.h>
122#include <linux/kernel.h>
123#include <linux/proc_fs.h>
124#include <linux/string.h>
125#include <linux/interrupt.h>
126#include <linux/ioport.h>
127#include <linux/sched.h>
128#include <linux/slab.h>
129#include <linux/jiffies.h>
130#include <asm/io.h>
131
132#include <scsi/scsi.h>
133#include <scsi/scsi_cmnd.h>
134#include <scsi/scsi_device.h>
135#include <scsi/scsi_host.h>
136#include <scsi/scsi_tcq.h>
137
138#include "initio.h"
139
140#define SENSE_SIZE 14
141
142#define i91u_MAXQUEUE 2
143#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
144
145#define INI_VENDOR_ID 0x1101 /* Initio's PCI vendor ID */
146#define DMX_VENDOR_ID 0x134a /* Domex's PCI vendor ID */
147#define I950_DEVICE_ID 0x9500 /* Initio's inic-950 product ID */
148#define I940_DEVICE_ID 0x9400 /* Initio's inic-940 product ID */
149#define I935_DEVICE_ID 0x9401 /* Initio's inic-935 product ID */
150#define I920_DEVICE_ID 0x0002 /* Initio's other product ID */
151
152#ifdef DEBUG_i91u
153static unsigned int i91u_debug = DEBUG_DEFAULT;
154#endif
155
156#define TULSZ(sz) (sizeof(sz) / sizeof(sz[0]))
157#define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
158
159typedef struct PCI_ID_Struc {
160 unsigned short vendor_id;
161 unsigned short device_id;
162} PCI_ID;
163
164static int tul_num_ch = 4; /* Maximum 4 adapters */
165static int tul_num_scb;
166static int tul_tag_enable = 1;
167static SCB *tul_scb;
168
169#ifdef DEBUG_i91u
170static int setup_debug = 0;
171#endif
172
173static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
174
175static const PCI_ID i91u_pci_devices[] = {
176 { INI_VENDOR_ID, I950_DEVICE_ID },
177 { INI_VENDOR_ID, I940_DEVICE_ID },
178 { INI_VENDOR_ID, I935_DEVICE_ID },
179 { INI_VENDOR_ID, I920_DEVICE_ID },
180 { DMX_VENDOR_ID, I920_DEVICE_ID },
181};
182
183#define DEBUG_INTERRUPT 0
184#define DEBUG_QUEUE 0
185#define DEBUG_STATE 0
186#define INT_DISC 0
187
188/*--- external functions --*/
189static void tul_se2_wait(void);
190
191/*--- forward refrence ---*/
192static SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun);
193static SCB *tul_find_done_scb(HCS * pCurHcb);
194
195static int tulip_main(HCS * pCurHcb);
196
197static int tul_next_state(HCS * pCurHcb);
198static int tul_state_1(HCS * pCurHcb);
199static int tul_state_2(HCS * pCurHcb);
200static int tul_state_3(HCS * pCurHcb);
201static int tul_state_4(HCS * pCurHcb);
202static int tul_state_5(HCS * pCurHcb);
203static int tul_state_6(HCS * pCurHcb);
204static int tul_state_7(HCS * pCurHcb);
205static int tul_xfer_data_in(HCS * pCurHcb);
206static int tul_xfer_data_out(HCS * pCurHcb);
207static int tul_xpad_in(HCS * pCurHcb);
208static int tul_xpad_out(HCS * pCurHcb);
209static int tul_status_msg(HCS * pCurHcb);
210
211static int tul_msgin(HCS * pCurHcb);
212static int tul_msgin_sync(HCS * pCurHcb);
213static int tul_msgin_accept(HCS * pCurHcb);
214static int tul_msgout_reject(HCS * pCurHcb);
215static int tul_msgin_extend(HCS * pCurHcb);
216
217static int tul_msgout_ide(HCS * pCurHcb);
218static int tul_msgout_abort_targ(HCS * pCurHcb);
219static int tul_msgout_abort_tag(HCS * pCurHcb);
220
221static int tul_bus_device_reset(HCS * pCurHcb);
222static void tul_select_atn(HCS * pCurHcb, SCB * pCurScb);
223static void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb);
224static void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb);
225static int int_tul_busfree(HCS * pCurHcb);
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]226static int int_tul_scsi_rst(HCS * pCurHcb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]227static int int_tul_bad_seq(HCS * pCurHcb);
228static int int_tul_resel(HCS * pCurHcb);
229static int tul_sync_done(HCS * pCurHcb);
230static int wdtr_done(HCS * pCurHcb);
231static int wait_tulip(HCS * pCurHcb);
232static int tul_wait_done_disc(HCS * pCurHcb);
233static int tul_wait_disc(HCS * pCurHcb);
234static void tulip_scsi(HCS * pCurHcb);
235static int tul_post_scsi_rst(HCS * pCurHcb);
236
237static void tul_se2_ew_en(WORD CurBase);
238static void tul_se2_ew_ds(WORD CurBase);
239static int tul_se2_rd_all(WORD CurBase);
240static void tul_se2_update_all(WORD CurBase); /* setup default pattern */
241static void tul_read_eeprom(WORD CurBase);
242
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]243 /* ---- INTERNAL VARIABLES ---- */
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]244static HCS tul_hcs[MAX_SUPPORTED_ADAPTERS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]245static INI_ADPT_STRUCT i91u_adpt[MAX_SUPPORTED_ADAPTERS];
246
247/*NVRAM nvram, *nvramp = &nvram; */
248static NVRAM i91unvram;
249static NVRAM *i91unvramp;
250
251
252
253static UCHAR i91udftNvRam[64] =
254{
255/*----------- header -----------*/
256 0x25, 0xc9, /* Signature */
257 0x40, /* Size */
258 0x01, /* Revision */
259 /* -- Host Adapter Structure -- */
260 0x95, /* ModelByte0 */
261 0x00, /* ModelByte1 */
262 0x00, /* ModelInfo */
263 0x01, /* NumOfCh */
264 NBC1_DEFAULT, /* BIOSConfig1 */
265 0, /* BIOSConfig2 */
266 0, /* HAConfig1 */
267 0, /* HAConfig2 */
268 /* SCSI channel 0 and target Structure */
269 7, /* SCSIid */
270 NCC1_DEFAULT, /* SCSIconfig1 */
271 0, /* SCSIconfig2 */
272 0x10, /* NumSCSItarget */
273
274 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
275 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
276 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
277 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
278
279 /* SCSI channel 1 and target Structure */
280 7, /* SCSIid */
281 NCC1_DEFAULT, /* SCSIconfig1 */
282 0, /* SCSIconfig2 */
283 0x10, /* NumSCSItarget */
284
285 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
286 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
287 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
288 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
289 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
290 0, 0}; /* - CheckSum - */
291
292
293static UCHAR tul_rate_tbl[8] = /* fast 20 */
294{
295 /* nanosecond devide by 4 */
296 12, /* 50ns, 20M */
297 18, /* 75ns, 13.3M */
298 25, /* 100ns, 10M */
299 31, /* 125ns, 8M */
300 37, /* 150ns, 6.6M */
301 43, /* 175ns, 5.7M */
302 50, /* 200ns, 5M */
303 62 /* 250ns, 4M */
304};
305
306static void tul_do_pause(unsigned amount)
307{ /* Pause for amount jiffies */
308 unsigned long the_time = jiffies + amount;
309
310 while (time_before_eq(jiffies, the_time));
311}
312
313/*-- forward reference --*/
314
315/*******************************************************************
316 Use memeory refresh time ~ 15us * 2
317********************************************************************/
318void tul_se2_wait(void)
319{
320#if 1
321 udelay(30);
322#else
323 UCHAR readByte;
324
325 readByte = TUL_RD(0, 0x61);
326 if ((readByte & 0x10) == 0x10) {
327 for (;;) {
328 readByte = TUL_RD(0, 0x61);
329 if ((readByte & 0x10) == 0x10)
330 break;
331 }
332 for (;;) {
333 readByte = TUL_RD(0, 0x61);
334 if ((readByte & 0x10) != 0x10)
335 break;
336 }
337 } else {
338 for (;;) {
339 readByte = TUL_RD(0, 0x61);
340 if ((readByte & 0x10) == 0x10)
341 break;
342 }
343 for (;;) {
344 readByte = TUL_RD(0, 0x61);
345 if ((readByte & 0x10) != 0x10)
346 break;
347 }
348 }
349#endif
350}
351
352
353/******************************************************************
354 Input: instruction for Serial E2PROM
355
356 EX: se2_rd(0 call se2_instr() to send address and read command
357
358 StartBit OP_Code Address Data
359 --------- -------- ------------------ -------
360 1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0
361
362 +-----------------------------------------------------
363 |
364 CS -----+
365 +--+ +--+ +--+ +--+ +--+
366 ^ | ^ | ^ | ^ | ^ |
367 | | | | | | | | | |
368 CLK -------+ +--+ +--+ +--+ +--+ +--
369 (leading edge trigger)
370
371 +--1-----1--+
372 | SB OP | OP A5 A4
373 DI ----+ +--0------------------
374 (address and cmd sent to nvram)
375
376 -------------------------------------------+
377 |
378 DO +---
379 (data sent from nvram)
380
381
382******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]383static void tul_se2_instr(WORD CurBase, UCHAR instr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]384{
385 int i;
386 UCHAR b;
387
388 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* cs+start bit */
389 tul_se2_wait();
390 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK | SE2DO); /* +CLK */
391 tul_se2_wait();
392
393 for (i = 0; i < 8; i++) {
394 if (instr & 0x80)
395 b = SE2CS | SE2DO; /* -CLK+dataBit */
396 else
397 b = SE2CS; /* -CLK */
398 TUL_WR(CurBase + TUL_NVRAM, b);
399 tul_se2_wait();
400 TUL_WR(CurBase + TUL_NVRAM, b | SE2CLK); /* +CLK */
401 tul_se2_wait();
402 instr <<= 1;
403 }
404 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
405 tul_se2_wait();
406 return;
407}
408
409
410/******************************************************************
411 Function name : tul_se2_ew_en
412 Description : Enable erase/write state of serial EEPROM
413******************************************************************/
414void tul_se2_ew_en(WORD CurBase)
415{
416 tul_se2_instr(CurBase, 0x30); /* EWEN */
417 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
418 tul_se2_wait();
419 return;
420}
421
422
423/************************************************************************
424 Disable erase/write state of serial EEPROM
425*************************************************************************/
426void tul_se2_ew_ds(WORD CurBase)
427{
428 tul_se2_instr(CurBase, 0); /* EWDS */
429 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
430 tul_se2_wait();
431 return;
432}
433
434
435/******************************************************************
436 Input :address of Serial E2PROM
437 Output :value stored in Serial E2PROM
438*******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]439static USHORT tul_se2_rd(WORD CurBase, ULONG adr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]440{
441 UCHAR instr, readByte;
442 USHORT readWord;
443 int i;
444
445 instr = (UCHAR) (adr | 0x80);
446 tul_se2_instr(CurBase, instr); /* READ INSTR */
447 readWord = 0;
448
449 for (i = 15; i >= 0; i--) {
450 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
451 tul_se2_wait();
452 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
453
454 /* sample data after the following edge of clock */
455 readByte = TUL_RD(CurBase, TUL_NVRAM);
456 readByte &= SE2DI;
457 readWord += (readByte << i);
458 tul_se2_wait(); /* 6/20/95 */
459 }
460
461 TUL_WR(CurBase + TUL_NVRAM, 0); /* no chip select */
462 tul_se2_wait();
463 return readWord;
464}
465
466
467/******************************************************************
468 Input: new value in Serial E2PROM, address of Serial E2PROM
469*******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]470static void tul_se2_wr(WORD CurBase, UCHAR adr, USHORT writeWord)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]471{
472 UCHAR readByte;
473 UCHAR instr;
474 int i;
475
476 instr = (UCHAR) (adr | 0x40);
477 tul_se2_instr(CurBase, instr); /* WRITE INSTR */
478 for (i = 15; i >= 0; i--) {
479 if (writeWord & 0x8000)
480 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* -CLK+dataBit 1 */
481 else
482 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK+dataBit 0 */
483 tul_se2_wait();
484 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
485 tul_se2_wait();
486 writeWord <<= 1;
487 }
488 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
489 tul_se2_wait();
490 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
491 tul_se2_wait();
492
493 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* +CS */
494 tul_se2_wait();
495
496 for (;;) {
497 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
498 tul_se2_wait();
499 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
500 tul_se2_wait();
501 if ((readByte = TUL_RD(CurBase, TUL_NVRAM)) & SE2DI)
502 break; /* write complete */
503 }
504 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
505 return;
506}
507
508
509/***********************************************************************
510 Read SCSI H/A configuration parameters from serial EEPROM
511************************************************************************/
512int tul_se2_rd_all(WORD CurBase)
513{
514 int i;
515 ULONG chksum = 0;
516 USHORT *np;
517
518 i91unvramp = &i91unvram;
519 np = (USHORT *) i91unvramp;
520 for (i = 0; i < 32; i++) {
521 *np++ = tul_se2_rd(CurBase, i);
522 }
523
524/*--------------------Is signature "ini" ok ? ----------------*/
525 if (i91unvramp->NVM_Signature != INI_SIGNATURE)
526 return -1;
527/*---------------------- Is ckecksum ok ? ----------------------*/
528 np = (USHORT *) i91unvramp;
529 for (i = 0; i < 31; i++)
530 chksum += *np++;
531 if (i91unvramp->NVM_CheckSum != (USHORT) chksum)
532 return -1;
533 return 1;
534}
535
536
537/***********************************************************************
538 Update SCSI H/A configuration parameters from serial EEPROM
539************************************************************************/
540void tul_se2_update_all(WORD CurBase)
541{ /* setup default pattern */
542 int i;
543 ULONG chksum = 0;
544 USHORT *np, *np1;
545
546 i91unvramp = &i91unvram;
547 /* Calculate checksum first */
548 np = (USHORT *) i91udftNvRam;
549 for (i = 0; i < 31; i++)
550 chksum += *np++;
551 *np = (USHORT) chksum;
552 tul_se2_ew_en(CurBase); /* Enable write */
553
554 np = (USHORT *) i91udftNvRam;
555 np1 = (USHORT *) i91unvramp;
556 for (i = 0; i < 32; i++, np++, np1++) {
557 if (*np != *np1) {
558 tul_se2_wr(CurBase, i, *np);
559 }
560 }
561
562 tul_se2_ew_ds(CurBase); /* Disable write */
563 return;
564}
565
566/*************************************************************************
567 Function name : read_eeprom
568**************************************************************************/
569void tul_read_eeprom(WORD CurBase)
570{
571 UCHAR gctrl;
572
573 i91unvramp = &i91unvram;
574/*------Enable EEProm programming ---*/
575 gctrl = TUL_RD(CurBase, TUL_GCTRL);
576 TUL_WR(CurBase + TUL_GCTRL, gctrl | TUL_GCTRL_EEPROM_BIT);
577 if (tul_se2_rd_all(CurBase) != 1) {
578 tul_se2_update_all(CurBase); /* setup default pattern */
579 tul_se2_rd_all(CurBase); /* load again */
580 }
581/*------ Disable EEProm programming ---*/
582 gctrl = TUL_RD(CurBase, TUL_GCTRL);
583 TUL_WR(CurBase + TUL_GCTRL, gctrl & ~TUL_GCTRL_EEPROM_BIT);
584} /* read_eeprom */
585
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]586static int Addi91u_into_Adapter_table(WORD wBIOS, WORD wBASE, BYTE bInterrupt,
587 BYTE bBus, BYTE bDevice)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]588{
589 int i, j;
590
591 for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) {
592 if (i91u_adpt[i].ADPT_BIOS < wBIOS)
593 continue;
594 if (i91u_adpt[i].ADPT_BIOS == wBIOS) {
595 if (i91u_adpt[i].ADPT_BASE == wBASE) {
596 if (i91u_adpt[i].ADPT_Bus != 0xFF)
597 return 1;
598 } else if (i91u_adpt[i].ADPT_BASE < wBASE)
599 continue;
600 }
601 for (j = MAX_SUPPORTED_ADAPTERS - 1; j > i; j--) {
602 i91u_adpt[j].ADPT_BASE = i91u_adpt[j - 1].ADPT_BASE;
603 i91u_adpt[j].ADPT_INTR = i91u_adpt[j - 1].ADPT_INTR;
604 i91u_adpt[j].ADPT_BIOS = i91u_adpt[j - 1].ADPT_BIOS;
605 i91u_adpt[j].ADPT_Bus = i91u_adpt[j - 1].ADPT_Bus;
606 i91u_adpt[j].ADPT_Device = i91u_adpt[j - 1].ADPT_Device;
607 }
608 i91u_adpt[i].ADPT_BASE = wBASE;
609 i91u_adpt[i].ADPT_INTR = bInterrupt;
610 i91u_adpt[i].ADPT_BIOS = wBIOS;
611 i91u_adpt[i].ADPT_Bus = bBus;
612 i91u_adpt[i].ADPT_Device = bDevice;
613 return 0;
614 }
615 return 1;
616}
617
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]618static void init_i91uAdapter_table(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]619{
620 int i;
621
622 for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) { /* Initialize adapter structure */
623 i91u_adpt[i].ADPT_BIOS = 0xffff;
624 i91u_adpt[i].ADPT_BASE = 0xffff;
625 i91u_adpt[i].ADPT_INTR = 0xff;
626 i91u_adpt[i].ADPT_Bus = 0xff;
627 i91u_adpt[i].ADPT_Device = 0xff;
628 }
629 return;
630}
631
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]632static void tul_stop_bm(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]633{
634
635 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
636 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
637 /* wait Abort DMA xfer done */
638 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
639 }
640 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
641}
642
643/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]644static void get_tulipPCIConfig(HCS * pCurHcb, int ch_idx)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]645{
646 pCurHcb->HCS_Base = i91u_adpt[ch_idx].ADPT_BASE; /* Supply base address */
647 pCurHcb->HCS_BIOS = i91u_adpt[ch_idx].ADPT_BIOS; /* Supply BIOS address */
648 pCurHcb->HCS_Intr = i91u_adpt[ch_idx].ADPT_INTR; /* Supply interrupt line */
649 return;
650}
651
652/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]653static int tul_reset_scsi(HCS * pCurHcb, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]654{
655 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_BUS);
656
657 while (!((pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt)) & TSS_SCSIRST_INT));
658 /* reset tulip chip */
659
660 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, 0);
661
662 /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
663 /* SONY 5200 tape drive won't work if only stall for 1 sec */
664 tul_do_pause(seconds * HZ);
665
666 TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
667
668 return (SCSI_RESET_SUCCESS);
669}
670
671/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]672static int init_tulip(HCS * pCurHcb, SCB * scbp, int tul_num_scb,
673 BYTE * pbBiosAdr, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]674{
675 int i;
676 BYTE *pwFlags;
677 BYTE *pbHeads;
678 SCB *pTmpScb, *pPrevScb = NULL;
679
680 pCurHcb->HCS_NumScbs = tul_num_scb;
681 pCurHcb->HCS_Semaph = 1;
682 spin_lock_init(&pCurHcb->HCS_SemaphLock);
683 pCurHcb->HCS_JSStatus0 = 0;
684 pCurHcb->HCS_Scb = scbp;
685 pCurHcb->HCS_NxtPend = scbp;
686 pCurHcb->HCS_NxtAvail = scbp;
687 for (i = 0, pTmpScb = scbp; i < tul_num_scb; i++, pTmpScb++) {
688 pTmpScb->SCB_TagId = i;
689 if (i != 0)
690 pPrevScb->SCB_NxtScb = pTmpScb;
691 pPrevScb = pTmpScb;
692 }
693 pPrevScb->SCB_NxtScb = NULL;
694 pCurHcb->HCS_ScbEnd = pTmpScb;
695 pCurHcb->HCS_FirstAvail = scbp;
696 pCurHcb->HCS_LastAvail = pPrevScb;
697 spin_lock_init(&pCurHcb->HCS_AvailLock);
698 pCurHcb->HCS_FirstPend = NULL;
699 pCurHcb->HCS_LastPend = NULL;
700 pCurHcb->HCS_FirstBusy = NULL;
701 pCurHcb->HCS_LastBusy = NULL;
702 pCurHcb->HCS_FirstDone = NULL;
703 pCurHcb->HCS_LastDone = NULL;
704 pCurHcb->HCS_ActScb = NULL;
705 pCurHcb->HCS_ActTcs = NULL;
706
707 tul_read_eeprom(pCurHcb->HCS_Base);
708/*---------- get H/A configuration -------------*/
709 if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
710 pCurHcb->HCS_MaxTar = 8;
711 else
712 pCurHcb->HCS_MaxTar = 16;
713
714 pCurHcb->HCS_Config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
715
716 pCurHcb->HCS_SCSI_ID = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
717 pCurHcb->HCS_IdMask = ~(1 << pCurHcb->HCS_SCSI_ID);
718
Olaf Hering44456d32005-07-27 11:45:17 -0700[diff] [blame]719#ifdef CHK_PARITY
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]720 /* Enable parity error response */
721 TUL_WR(pCurHcb->HCS_Base + TUL_PCMD, TUL_RD(pCurHcb->HCS_Base, TUL_PCMD) | 0x40);
722#endif
723
724 /* Mask all the interrupt */
725 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
726
727 tul_stop_bm(pCurHcb);
728 /* --- Initialize the tulip --- */
729 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_CHIP);
730
731 /* program HBA's SCSI ID */
732 TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, pCurHcb->HCS_SCSI_ID << 4);
733
734 /* Enable Initiator Mode ,phase latch,alternate sync period mode,
735 disable SCSI reset */
736 if (pCurHcb->HCS_Config & HCC_EN_PAR)
737 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
738 else
739 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT);
740 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_SConf1);
741
742 /* Enable HW reselect */
743 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
744
745 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, 0);
746
747 /* selection time out = 250 ms */
748 TUL_WR(pCurHcb->HCS_Base + TUL_STimeOut, 153);
749
750/*--------- Enable SCSI terminator -----*/
751 TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, (pCurHcb->HCS_Config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)));
752 TUL_WR(pCurHcb->HCS_Base + TUL_GCTRL1,
753 ((pCurHcb->HCS_Config & HCC_AUTO_TERM) >> 4) | (TUL_RD(pCurHcb->HCS_Base, TUL_GCTRL1) & 0xFE));
754
755 for (i = 0,
756 pwFlags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
757 pbHeads = pbBiosAdr + 0x180;
758 i < pCurHcb->HCS_MaxTar;
759 i++, pwFlags++) {
760 pCurHcb->HCS_Tcs[i].TCS_Flags = *pwFlags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
761 if (pCurHcb->HCS_Tcs[i].TCS_Flags & TCF_EN_255)
762 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
763 else
764 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
765 pCurHcb->HCS_Tcs[i].TCS_JS_Period = 0;
766 pCurHcb->HCS_Tcs[i].TCS_SConfig0 = pCurHcb->HCS_SConf1;
767 pCurHcb->HCS_Tcs[i].TCS_DrvHead = *pbHeads++;
768 if (pCurHcb->HCS_Tcs[i].TCS_DrvHead == 255)
769 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
770 else
771 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
772 pCurHcb->HCS_Tcs[i].TCS_DrvSector = *pbHeads++;
773 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY;
774 pCurHcb->HCS_ActTags[i] = 0;
775 pCurHcb->HCS_MaxTags[i] = 0xFF;
776 } /* for */
777 printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
778 pCurHcb->HCS_Base, pCurHcb->HCS_Intr,
779 pCurHcb->HCS_BIOS, pCurHcb->HCS_SCSI_ID);
780/*------------------- reset SCSI Bus ---------------------------*/
781 if (pCurHcb->HCS_Config & HCC_SCSI_RESET) {
782 printk("i91u: Reset SCSI Bus ... \n");
783 tul_reset_scsi(pCurHcb, seconds);
784 }
785 TUL_WR(pCurHcb->HCS_Base + TUL_SCFG1, 0x17);
786 TUL_WR(pCurHcb->HCS_Base + TUL_SIntEnable, 0xE9);
787 return (0);
788}
789
790/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]791static SCB *tul_alloc_scb(HCS * hcsp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]792{
793 SCB *pTmpScb;
794 ULONG flags;
795 spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
796 if ((pTmpScb = hcsp->HCS_FirstAvail) != NULL) {
797#if DEBUG_QUEUE
798 printk("find scb at %08lx\n", (ULONG) pTmpScb);
799#endif
800 if ((hcsp->HCS_FirstAvail = pTmpScb->SCB_NxtScb) == NULL)
801 hcsp->HCS_LastAvail = NULL;
802 pTmpScb->SCB_NxtScb = NULL;
803 pTmpScb->SCB_Status = SCB_RENT;
804 }
805 spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
806 return (pTmpScb);
807}
808
809/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]810static void tul_release_scb(HCS * hcsp, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]811{
812 ULONG flags;
813
814#if DEBUG_QUEUE
815 printk("Release SCB %lx; ", (ULONG) scbp);
816#endif
817 spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
818 scbp->SCB_Srb = NULL;
819 scbp->SCB_Status = 0;
820 scbp->SCB_NxtScb = NULL;
821 if (hcsp->HCS_LastAvail != NULL) {
822 hcsp->HCS_LastAvail->SCB_NxtScb = scbp;
823 hcsp->HCS_LastAvail = scbp;
824 } else {
825 hcsp->HCS_FirstAvail = scbp;
826 hcsp->HCS_LastAvail = scbp;
827 }
828 spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
829}
830
831/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]832static void tul_append_pend_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]833{
834
835#if DEBUG_QUEUE
836 printk("Append pend SCB %lx; ", (ULONG) scbp);
837#endif
838 scbp->SCB_Status = SCB_PEND;
839 scbp->SCB_NxtScb = NULL;
840 if (pCurHcb->HCS_LastPend != NULL) {
841 pCurHcb->HCS_LastPend->SCB_NxtScb = scbp;
842 pCurHcb->HCS_LastPend = scbp;
843 } else {
844 pCurHcb->HCS_FirstPend = scbp;
845 pCurHcb->HCS_LastPend = scbp;
846 }
847}
848
849/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]850static void tul_push_pend_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]851{
852
853#if DEBUG_QUEUE
854 printk("Push pend SCB %lx; ", (ULONG) scbp);
855#endif
856 scbp->SCB_Status = SCB_PEND;
857 if ((scbp->SCB_NxtScb = pCurHcb->HCS_FirstPend) != NULL) {
858 pCurHcb->HCS_FirstPend = scbp;
859 } else {
860 pCurHcb->HCS_FirstPend = scbp;
861 pCurHcb->HCS_LastPend = scbp;
862 }
863}
864
865/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]866static SCB *tul_find_first_pend_scb(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]867{
868 SCB *pFirstPend;
869
870
871 pFirstPend = pCurHcb->HCS_FirstPend;
872 while (pFirstPend != NULL) {
873 if (pFirstPend->SCB_Opcode != ExecSCSI) {
874 return (pFirstPend);
875 }
876 if (pFirstPend->SCB_TagMsg == 0) {
877 if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] == 0) &&
878 !(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
879 return (pFirstPend);
880 }
881 } else {
882 if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] >=
883 pCurHcb->HCS_MaxTags[pFirstPend->SCB_Target]) |
884 (pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
885 pFirstPend = pFirstPend->SCB_NxtScb;
886 continue;
887 }
888 return (pFirstPend);
889 }
890 pFirstPend = pFirstPend->SCB_NxtScb;
891 }
892
893
894 return (pFirstPend);
895}
896/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]897static void tul_unlink_pend_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]898{
899 SCB *pTmpScb, *pPrevScb;
900
901#if DEBUG_QUEUE
902 printk("unlink pend SCB %lx; ", (ULONG) pCurScb);
903#endif
904
905 pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend;
906 while (pTmpScb != NULL) {
907 if (pCurScb == pTmpScb) { /* Unlink this SCB */
908 if (pTmpScb == pCurHcb->HCS_FirstPend) {
909 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
910 pCurHcb->HCS_LastPend = NULL;
911 } else {
912 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
913 if (pTmpScb == pCurHcb->HCS_LastPend)
914 pCurHcb->HCS_LastPend = pPrevScb;
915 }
916 pTmpScb->SCB_NxtScb = NULL;
917 break;
918 }
919 pPrevScb = pTmpScb;
920 pTmpScb = pTmpScb->SCB_NxtScb;
921 }
922 return;
923}
924/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]925static void tul_append_busy_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]926{
927
928#if DEBUG_QUEUE
929 printk("append busy SCB %lx; ", (ULONG) scbp);
930#endif
931 if (scbp->SCB_TagMsg)
932 pCurHcb->HCS_ActTags[scbp->SCB_Target]++;
933 else
934 pCurHcb->HCS_Tcs[scbp->SCB_Target].TCS_Flags |= TCF_BUSY;
935 scbp->SCB_Status = SCB_BUSY;
936 scbp->SCB_NxtScb = NULL;
937 if (pCurHcb->HCS_LastBusy != NULL) {
938 pCurHcb->HCS_LastBusy->SCB_NxtScb = scbp;
939 pCurHcb->HCS_LastBusy = scbp;
940 } else {
941 pCurHcb->HCS_FirstBusy = scbp;
942 pCurHcb->HCS_LastBusy = scbp;
943 }
944}
945
946/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]947static SCB *tul_pop_busy_scb(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]948{
949 SCB *pTmpScb;
950
951
952 if ((pTmpScb = pCurHcb->HCS_FirstBusy) != NULL) {
953 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
954 pCurHcb->HCS_LastBusy = NULL;
955 pTmpScb->SCB_NxtScb = NULL;
956 if (pTmpScb->SCB_TagMsg)
957 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
958 else
959 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
960 }
961#if DEBUG_QUEUE
962 printk("Pop busy SCB %lx; ", (ULONG) pTmpScb);
963#endif
964 return (pTmpScb);
965}
966
967/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]968static void tul_unlink_busy_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]969{
970 SCB *pTmpScb, *pPrevScb;
971
972#if DEBUG_QUEUE
973 printk("unlink busy SCB %lx; ", (ULONG) pCurScb);
974#endif
975
976 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
977 while (pTmpScb != NULL) {
978 if (pCurScb == pTmpScb) { /* Unlink this SCB */
979 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
980 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
981 pCurHcb->HCS_LastBusy = NULL;
982 } else {
983 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
984 if (pTmpScb == pCurHcb->HCS_LastBusy)
985 pCurHcb->HCS_LastBusy = pPrevScb;
986 }
987 pTmpScb->SCB_NxtScb = NULL;
988 if (pTmpScb->SCB_TagMsg)
989 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
990 else
991 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
992 break;
993 }
994 pPrevScb = pTmpScb;
995 pTmpScb = pTmpScb->SCB_NxtScb;
996 }
997 return;
998}
999
1000/***************************************************************************/
1001SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun)
1002{
1003 SCB *pTmpScb, *pPrevScb;
1004 WORD scbp_tarlun;
1005
1006
1007 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
1008 while (pTmpScb != NULL) {
1009 scbp_tarlun = (pTmpScb->SCB_Lun << 8) | (pTmpScb->SCB_Target);
1010 if (scbp_tarlun == tarlun) { /* Unlink this SCB */
1011 break;
1012 }
1013 pPrevScb = pTmpScb;
1014 pTmpScb = pTmpScb->SCB_NxtScb;
1015 }
1016#if DEBUG_QUEUE
1017 printk("find busy SCB %lx; ", (ULONG) pTmpScb);
1018#endif
1019 return (pTmpScb);
1020}
1021
1022/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1023static void tul_append_done_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1024{
1025
1026#if DEBUG_QUEUE
1027 printk("append done SCB %lx; ", (ULONG) scbp);
1028#endif
1029
1030 scbp->SCB_Status = SCB_DONE;
1031 scbp->SCB_NxtScb = NULL;
1032 if (pCurHcb->HCS_LastDone != NULL) {
1033 pCurHcb->HCS_LastDone->SCB_NxtScb = scbp;
1034 pCurHcb->HCS_LastDone = scbp;
1035 } else {
1036 pCurHcb->HCS_FirstDone = scbp;
1037 pCurHcb->HCS_LastDone = scbp;
1038 }
1039}
1040
1041/***************************************************************************/
1042SCB *tul_find_done_scb(HCS * pCurHcb)
1043{
1044 SCB *pTmpScb;
1045
1046
1047 if ((pTmpScb = pCurHcb->HCS_FirstDone) != NULL) {
1048 if ((pCurHcb->HCS_FirstDone = pTmpScb->SCB_NxtScb) == NULL)
1049 pCurHcb->HCS_LastDone = NULL;
1050 pTmpScb->SCB_NxtScb = NULL;
1051 }
1052#if DEBUG_QUEUE
1053 printk("find done SCB %lx; ", (ULONG) pTmpScb);
1054#endif
1055 return (pTmpScb);
1056}
1057
1058/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1059static int tul_abort_srb(HCS * pCurHcb, struct scsi_cmnd *srbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1060{
1061 ULONG flags;
1062 SCB *pTmpScb, *pPrevScb;
1063
1064 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1065
1066 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1067 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1068 /* disable Jasmin SCSI Int */
1069
1070 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1071
1072 tulip_main(pCurHcb);
1073
1074 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1075
1076 pCurHcb->HCS_Semaph = 1;
1077 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1078
1079 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1080
1081 return SCSI_ABORT_SNOOZE;
1082 }
1083 pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend; /* Check Pend queue */
1084 while (pTmpScb != NULL) {
1085 /* 07/27/98 */
1086 if (pTmpScb->SCB_Srb == srbp) {
1087 if (pTmpScb == pCurHcb->HCS_ActScb) {
1088 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1089 return SCSI_ABORT_BUSY;
1090 } else if (pTmpScb == pCurHcb->HCS_FirstPend) {
1091 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
1092 pCurHcb->HCS_LastPend = NULL;
1093 } else {
1094 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1095 if (pTmpScb == pCurHcb->HCS_LastPend)
1096 pCurHcb->HCS_LastPend = pPrevScb;
1097 }
1098 pTmpScb->SCB_HaStat = HOST_ABORTED;
1099 pTmpScb->SCB_Flags |= SCF_DONE;
1100 if (pTmpScb->SCB_Flags & SCF_POST)
1101 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1102 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1103 return SCSI_ABORT_SUCCESS;
1104 }
1105 pPrevScb = pTmpScb;
1106 pTmpScb = pTmpScb->SCB_NxtScb;
1107 }
1108
1109 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
1110 while (pTmpScb != NULL) {
1111
1112 if (pTmpScb->SCB_Srb == srbp) {
1113
1114 if (pTmpScb == pCurHcb->HCS_ActScb) {
1115 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1116 return SCSI_ABORT_BUSY;
1117 } else if (pTmpScb->SCB_TagMsg == 0) {
1118 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1119 return SCSI_ABORT_BUSY;
1120 } else {
1121 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
1122 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
1123 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
1124 pCurHcb->HCS_LastBusy = NULL;
1125 } else {
1126 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1127 if (pTmpScb == pCurHcb->HCS_LastBusy)
1128 pCurHcb->HCS_LastBusy = pPrevScb;
1129 }
1130 pTmpScb->SCB_NxtScb = NULL;
1131
1132
1133 pTmpScb->SCB_HaStat = HOST_ABORTED;
1134 pTmpScb->SCB_Flags |= SCF_DONE;
1135 if (pTmpScb->SCB_Flags & SCF_POST)
1136 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1137 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1138 return SCSI_ABORT_SUCCESS;
1139 }
1140 }
1141 pPrevScb = pTmpScb;
1142 pTmpScb = pTmpScb->SCB_NxtScb;
1143 }
1144 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1145 return (SCSI_ABORT_NOT_RUNNING);
1146}
1147
1148/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1149static int tul_bad_seq(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1150{
1151 SCB *pCurScb;
1152
1153 printk("tul_bad_seg c=%d\n", pCurHcb->HCS_Index);
1154
1155 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
1156 tul_unlink_busy_scb(pCurHcb, pCurScb);
1157 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1158 pCurScb->SCB_TaStat = 0;
1159 tul_append_done_scb(pCurHcb, pCurScb);
1160 }
1161 tul_stop_bm(pCurHcb);
1162
1163 tul_reset_scsi(pCurHcb, 8); /* 7/29/98 */
1164
1165 return (tul_post_scsi_rst(pCurHcb));
1166}
1167
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1168#if 0
1169
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1170/************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1171static int tul_device_reset(HCS * pCurHcb, struct scsi_cmnd *pSrb,
1172 unsigned int target, unsigned int ResetFlags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1173{
1174 ULONG flags;
1175 SCB *pScb;
1176 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1177
1178 if (ResetFlags & SCSI_RESET_ASYNCHRONOUS) {
1179
1180 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1181 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1182 /* disable Jasmin SCSI Int */
1183
1184 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1185
1186 tulip_main(pCurHcb);
1187
1188 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1189
1190 pCurHcb->HCS_Semaph = 1;
1191 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1192
1193 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1194
1195 return SCSI_RESET_SNOOZE;
1196 }
1197 pScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
1198 while (pScb != NULL) {
1199 if (pScb->SCB_Srb == pSrb)
1200 break;
1201 pScb = pScb->SCB_NxtScb;
1202 }
1203 if (pScb == NULL) {
1204 printk("Unable to Reset - No SCB Found\n");
1205
1206 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1207 return SCSI_RESET_NOT_RUNNING;
1208 }
1209 }
1210 if ((pScb = tul_alloc_scb(pCurHcb)) == NULL) {
1211 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1212 return SCSI_RESET_NOT_RUNNING;
1213 }
1214 pScb->SCB_Opcode = BusDevRst;
1215 pScb->SCB_Flags = SCF_POST;
1216 pScb->SCB_Target = target;
1217 pScb->SCB_Mode = 0;
1218
1219 pScb->SCB_Srb = NULL;
1220 if (ResetFlags & SCSI_RESET_SYNCHRONOUS) {
1221 pScb->SCB_Srb = pSrb;
1222 }
1223 tul_push_pend_scb(pCurHcb, pScb); /* push this SCB to Pending queue */
1224
1225 if (pCurHcb->HCS_Semaph == 1) {
1226 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1227 /* disable Jasmin SCSI Int */
1228 pCurHcb->HCS_Semaph = 0;
1229
1230 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1231
1232 tulip_main(pCurHcb);
1233
1234 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1235
1236 pCurHcb->HCS_Semaph = 1;
1237 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1238 }
1239 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1240 return SCSI_RESET_PENDING;
1241}
1242
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1243static int tul_reset_scsi_bus(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1244{
1245 ULONG flags;
1246
1247 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1248 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1249 pCurHcb->HCS_Semaph = 0;
1250
1251 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1252
1253 tul_stop_bm(pCurHcb);
1254
1255 tul_reset_scsi(pCurHcb, 2); /* 7/29/98 */
1256
1257 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1258 tul_post_scsi_rst(pCurHcb);
1259
1260 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1261
1262 tulip_main(pCurHcb);
1263
1264 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1265
1266 pCurHcb->HCS_Semaph = 1;
1267 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1268 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1269 return (SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET);
1270}
1271
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1272#endif /* 0 */
1273
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1274/************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1275static void tul_exec_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1276{
1277 ULONG flags;
1278
1279 pCurScb->SCB_Mode = 0;
1280
1281 pCurScb->SCB_SGIdx = 0;
1282 pCurScb->SCB_SGMax = pCurScb->SCB_SGLen;
1283
1284 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1285
1286 tul_append_pend_scb(pCurHcb, pCurScb); /* Append this SCB to Pending queue */
1287
1288/* VVVVV 07/21/98 */
1289 if (pCurHcb->HCS_Semaph == 1) {
1290 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1291 /* disable Jasmin SCSI Int */
1292 pCurHcb->HCS_Semaph = 0;
1293
1294 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1295
1296 tulip_main(pCurHcb);
1297
1298 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1299
1300 pCurHcb->HCS_Semaph = 1;
1301 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1302 }
1303 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1304 return;
1305}
1306
1307/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1308static int tul_isr(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1309{
1310 /* Enter critical section */
1311
1312 if (TUL_RD(pCurHcb->HCS_Base, TUL_Int) & TSS_INT_PENDING) {
1313 if (pCurHcb->HCS_Semaph == 1) {
1314 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1315 /* Disable Tulip SCSI Int */
1316 pCurHcb->HCS_Semaph = 0;
1317
1318 tulip_main(pCurHcb);
1319
1320 pCurHcb->HCS_Semaph = 1;
1321 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1322 return (1);
1323 }
1324 }
1325 return (0);
1326}
1327
1328/***************************************************************************/
1329int tulip_main(HCS * pCurHcb)
1330{
1331 SCB *pCurScb;
1332
1333 for (;;) {
1334
1335 tulip_scsi(pCurHcb); /* Call tulip_scsi */
1336
1337 while ((pCurScb = tul_find_done_scb(pCurHcb)) != NULL) { /* find done entry */
1338 if (pCurScb->SCB_TaStat == INI_QUEUE_FULL) {
1339 pCurHcb->HCS_MaxTags[pCurScb->SCB_Target] =
1340 pCurHcb->HCS_ActTags[pCurScb->SCB_Target] - 1;
1341 pCurScb->SCB_TaStat = 0;
1342 tul_append_pend_scb(pCurHcb, pCurScb);
1343 continue;
1344 }
1345 if (!(pCurScb->SCB_Mode & SCM_RSENS)) { /* not in auto req. sense mode */
1346 if (pCurScb->SCB_TaStat == 2) {
1347
1348 /* clr sync. nego flag */
1349
1350 if (pCurScb->SCB_Flags & SCF_SENSE) {
1351 BYTE len;
1352 len = pCurScb->SCB_SenseLen;
1353 if (len == 0)
1354 len = 1;
1355 pCurScb->SCB_BufLen = pCurScb->SCB_SenseLen;
1356 pCurScb->SCB_BufPtr = pCurScb->SCB_SensePtr;
1357 pCurScb->SCB_Flags &= ~(SCF_SG | SCF_DIR); /* for xfer_data_in */
1358/* pCurScb->SCB_Flags |= SCF_NO_DCHK; */
1359 /* so, we won't report worng direction in xfer_data_in,
1360 and won't report HOST_DO_DU in state_6 */
1361 pCurScb->SCB_Mode = SCM_RSENS;
1362 pCurScb->SCB_Ident &= 0xBF; /* Disable Disconnect */
1363 pCurScb->SCB_TagMsg = 0;
1364 pCurScb->SCB_TaStat = 0;
1365 pCurScb->SCB_CDBLen = 6;
1366 pCurScb->SCB_CDB[0] = SCSICMD_RequestSense;
1367 pCurScb->SCB_CDB[1] = 0;
1368 pCurScb->SCB_CDB[2] = 0;
1369 pCurScb->SCB_CDB[3] = 0;
1370 pCurScb->SCB_CDB[4] = len;
1371 pCurScb->SCB_CDB[5] = 0;
1372 tul_push_pend_scb(pCurHcb, pCurScb);
1373 break;
1374 }
1375 }
1376 } else { /* in request sense mode */
1377
1378 if (pCurScb->SCB_TaStat == 2) { /* check contition status again after sending
1379 requset sense cmd 0x3 */
1380 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1381 }
1382 pCurScb->SCB_TaStat = 2;
1383 }
1384 pCurScb->SCB_Flags |= SCF_DONE;
1385 if (pCurScb->SCB_Flags & SCF_POST) {
1386 (*pCurScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pCurScb);
1387 }
1388 } /* while */
1389
1390 /* find_active: */
1391 if (TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0) & TSS_INT_PENDING)
1392 continue;
1393
1394 if (pCurHcb->HCS_ActScb) { /* return to OS and wait for xfer_done_ISR/Selected_ISR */
1395 return 1; /* return to OS, enable interrupt */
1396 }
1397 /* Check pending SCB */
1398 if (tul_find_first_pend_scb(pCurHcb) == NULL) {
1399 return 1; /* return to OS, enable interrupt */
1400 }
1401 } /* End of for loop */
1402 /* statement won't reach here */
1403}
1404
1405
1406
1407
1408/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
1409/***************************************************************************/
1410/***************************************************************************/
1411/***************************************************************************/
1412/***************************************************************************/
1413
1414/***************************************************************************/
1415void tulip_scsi(HCS * pCurHcb)
1416{
1417 SCB *pCurScb;
1418 TCS *pCurTcb;
1419
1420 /* make sure to service interrupt asap */
1421
1422 if ((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING) {
1423
1424 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
1425 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
1426 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
1427 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* SCSI bus reset detected */
1428 int_tul_scsi_rst(pCurHcb);
1429 return;
1430 }
1431 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if selected/reselected interrupt */
1432 if (int_tul_resel(pCurHcb) == 0)
1433 tul_next_state(pCurHcb);
1434 return;
1435 }
1436 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) {
1437 int_tul_busfree(pCurHcb);
1438 return;
1439 }
1440 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
1441 int_tul_busfree(pCurHcb); /* unexpected bus free or sel timeout */
1442 return;
1443 }
1444 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) { /* func complete or Bus service */
1445 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL)
1446 tul_next_state(pCurHcb);
1447 return;
1448 }
1449 }
1450 if (pCurHcb->HCS_ActScb != NULL)
1451 return;
1452
1453 if ((pCurScb = tul_find_first_pend_scb(pCurHcb)) == NULL)
1454 return;
1455
1456 /* program HBA's SCSI ID & target SCSI ID */
1457 TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId,
1458 (pCurHcb->HCS_SCSI_ID << 4) | (pCurScb->SCB_Target & 0x0F));
1459 if (pCurScb->SCB_Opcode == ExecSCSI) {
1460 pCurTcb = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
1461
1462 if (pCurScb->SCB_TagMsg)
1463 pCurTcb->TCS_DrvFlags |= TCF_DRV_EN_TAG;
1464 else
1465 pCurTcb->TCS_DrvFlags &= ~TCF_DRV_EN_TAG;
1466
1467 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
1468 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { /* do wdtr negotiation */
1469 tul_select_atn_stop(pCurHcb, pCurScb);
1470 } else {
1471 if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync negotiation */
1472 tul_select_atn_stop(pCurHcb, pCurScb);
1473 } else {
1474 if (pCurScb->SCB_TagMsg)
1475 tul_select_atn3(pCurHcb, pCurScb);
1476 else
1477 tul_select_atn(pCurHcb, pCurScb);
1478 }
1479 }
1480 if (pCurScb->SCB_Flags & SCF_POLL) {
1481 while (wait_tulip(pCurHcb) != -1) {
1482 if (tul_next_state(pCurHcb) == -1)
1483 break;
1484 }
1485 }
1486 } else if (pCurScb->SCB_Opcode == BusDevRst) {
1487 tul_select_atn_stop(pCurHcb, pCurScb);
1488 pCurScb->SCB_NxtStat = 8;
1489 if (pCurScb->SCB_Flags & SCF_POLL) {
1490 while (wait_tulip(pCurHcb) != -1) {
1491 if (tul_next_state(pCurHcb) == -1)
1492 break;
1493 }
1494 }
1495 } else if (pCurScb->SCB_Opcode == AbortCmd) {
1496 if (tul_abort_srb(pCurHcb, pCurScb->SCB_Srb) != 0) {
1497
1498
1499 tul_unlink_pend_scb(pCurHcb, pCurScb);
1500
1501 tul_release_scb(pCurHcb, pCurScb);
1502 } else {
1503 pCurScb->SCB_Opcode = BusDevRst;
1504 tul_select_atn_stop(pCurHcb, pCurScb);
1505 pCurScb->SCB_NxtStat = 8;
1506 }
1507
1508/* 08/03/98 */
1509 } else {
1510 tul_unlink_pend_scb(pCurHcb, pCurScb);
1511 pCurScb->SCB_HaStat = 0x16; /* bad command */
1512 tul_append_done_scb(pCurHcb, pCurScb);
1513 }
1514 return;
1515}
1516
1517
1518/***************************************************************************/
1519int tul_next_state(HCS * pCurHcb)
1520{
1521 int next;
1522
1523 next = pCurHcb->HCS_ActScb->SCB_NxtStat;
1524 for (;;) {
1525 switch (next) {
1526 case 1:
1527 next = tul_state_1(pCurHcb);
1528 break;
1529 case 2:
1530 next = tul_state_2(pCurHcb);
1531 break;
1532 case 3:
1533 next = tul_state_3(pCurHcb);
1534 break;
1535 case 4:
1536 next = tul_state_4(pCurHcb);
1537 break;
1538 case 5:
1539 next = tul_state_5(pCurHcb);
1540 break;
1541 case 6:
1542 next = tul_state_6(pCurHcb);
1543 break;
1544 case 7:
1545 next = tul_state_7(pCurHcb);
1546 break;
1547 case 8:
1548 return (tul_bus_device_reset(pCurHcb));
1549 default:
1550 return (tul_bad_seq(pCurHcb));
1551 }
1552 if (next <= 0)
1553 return next;
1554 }
1555}
1556
1557
1558/***************************************************************************/
1559/* sTate after selection with attention & stop */
1560int tul_state_1(HCS * pCurHcb)
1561{
1562 SCB *pCurScb = pCurHcb->HCS_ActScb;
1563 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1564#if DEBUG_STATE
1565 printk("-s1-");
1566#endif
1567
1568 tul_unlink_pend_scb(pCurHcb, pCurScb);
1569 tul_append_busy_scb(pCurHcb, pCurScb);
1570
1571 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1572 /* ATN on */
1573 if (pCurHcb->HCS_Phase == MSG_OUT) {
1574
1575 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, (TSC_EN_BUS_IN | TSC_HW_RESELECT));
1576
1577 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
1578
1579 if (pCurScb->SCB_TagMsg) {
1580 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
1581 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
1582 }
1583 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1584
1585 pCurTcb->TCS_Flags |= TCF_WDTR_DONE;
1586
1587 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1588 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2); /* Extended msg length */
1589 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* Sync request */
1590 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* Start from 16 bits */
1591 } else if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1592
1593 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1594
1595 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1596 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* extended msg length */
1597 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */
1598 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1599 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */
1600 }
1601 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1602 if (wait_tulip(pCurHcb) == -1)
1603 return (-1);
1604 }
1605 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1606 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1607 return (3);
1608}
1609
1610
1611/***************************************************************************/
1612/* state after selection with attention */
1613/* state after selection with attention3 */
1614int tul_state_2(HCS * pCurHcb)
1615{
1616 SCB *pCurScb = pCurHcb->HCS_ActScb;
1617 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1618#if DEBUG_STATE
1619 printk("-s2-");
1620#endif
1621
1622 tul_unlink_pend_scb(pCurHcb, pCurScb);
1623 tul_append_busy_scb(pCurHcb, pCurScb);
1624
1625 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1626
1627 if (pCurHcb->HCS_JSStatus1 & TSS_CMD_PH_CMP) {
1628 return (4);
1629 }
1630 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1631 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1632 return (3);
1633}
1634
1635/***************************************************************************/
1636/* state before CDB xfer is done */
1637int tul_state_3(HCS * pCurHcb)
1638{
1639 SCB *pCurScb = pCurHcb->HCS_ActScb;
1640 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1641 int i;
1642
1643#if DEBUG_STATE
1644 printk("-s3-");
1645#endif
1646 for (;;) {
1647 switch (pCurHcb->HCS_Phase) {
1648 case CMD_OUT: /* Command out phase */
1649 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
1650 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
1651 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1652 if (wait_tulip(pCurHcb) == -1)
1653 return (-1);
1654 if (pCurHcb->HCS_Phase == CMD_OUT) {
1655 return (tul_bad_seq(pCurHcb));
1656 }
1657 return (4);
1658
1659 case MSG_IN: /* Message in phase */
1660 pCurScb->SCB_NxtStat = 3;
1661 if (tul_msgin(pCurHcb) == -1)
1662 return (-1);
1663 break;
1664
1665 case STATUS_IN: /* Status phase */
1666 if (tul_status_msg(pCurHcb) == -1)
1667 return (-1);
1668 break;
1669
1670 case MSG_OUT: /* Message out phase */
1671 if (pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
1672
1673 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1674 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1675 if (wait_tulip(pCurHcb) == -1)
1676 return (-1);
1677
1678 } else {
1679 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1680
1681 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1682 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* ext. msg len */
1683 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */
1684 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1685 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */
1686 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1687 if (wait_tulip(pCurHcb) == -1)
1688 return (-1);
1689 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1690 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7));
1691
1692 }
1693 break;
1694
1695 default:
1696 return (tul_bad_seq(pCurHcb));
1697 }
1698 }
1699}
1700
1701
1702/***************************************************************************/
1703int tul_state_4(HCS * pCurHcb)
1704{
1705 SCB *pCurScb = pCurHcb->HCS_ActScb;
1706
1707#if DEBUG_STATE
1708 printk("-s4-");
1709#endif
1710 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_NO_XF) {
1711 return (6); /* Go to state 6 */
1712 }
1713 for (;;) {
1714 if (pCurScb->SCB_BufLen == 0)
1715 return (6); /* Go to state 6 */
1716
1717 switch (pCurHcb->HCS_Phase) {
1718
1719 case STATUS_IN: /* Status phase */
1720 if ((pCurScb->SCB_Flags & SCF_DIR) != 0) { /* if direction bit set then report data underrun */
1721 pCurScb->SCB_HaStat = HOST_DO_DU;
1722 }
1723 if ((tul_status_msg(pCurHcb)) == -1)
1724 return (-1);
1725 break;
1726
1727 case MSG_IN: /* Message in phase */
1728 pCurScb->SCB_NxtStat = 0x4;
1729 if (tul_msgin(pCurHcb) == -1)
1730 return (-1);
1731 break;
1732
1733 case MSG_OUT: /* Message out phase */
1734 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1735 pCurScb->SCB_BufLen = 0;
1736 pCurScb->SCB_HaStat = HOST_DO_DU;
1737 if (tul_msgout_ide(pCurHcb) == -1)
1738 return (-1);
1739 return (6); /* Go to state 6 */
1740 } else {
1741 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1742 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1743 if (wait_tulip(pCurHcb) == -1)
1744 return (-1);
1745 }
1746 break;
1747
1748 case DATA_IN: /* Data in phase */
1749 return (tul_xfer_data_in(pCurHcb));
1750
1751 case DATA_OUT: /* Data out phase */
1752 return (tul_xfer_data_out(pCurHcb));
1753
1754 default:
1755 return (tul_bad_seq(pCurHcb));
1756 }
1757 }
1758}
1759
1760
1761/***************************************************************************/
1762/* state after dma xfer done or phase change before xfer done */
1763int tul_state_5(HCS * pCurHcb)
1764{
1765 SCB *pCurScb = pCurHcb->HCS_ActScb;
1766 long cnt, xcnt; /* cannot use unsigned !! code: if (xcnt < 0) */
1767
1768#if DEBUG_STATE
1769 printk("-s5-");
1770#endif
1771/*------ get remaining count -------*/
1772
1773 cnt = TUL_RDLONG(pCurHcb->HCS_Base, TUL_SCnt0) & 0x0FFFFFF;
1774
1775 if (TUL_RD(pCurHcb->HCS_Base, TUL_XCmd) & 0x20) {
1776 /* ----------------------- DATA_IN ----------------------------- */
1777 /* check scsi parity error */
1778 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1779 pCurScb->SCB_HaStat = HOST_DO_DU;
1780 }
1781 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */
1782 /* tell Hardware scsi xfer has been terminated */
1783 TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, TUL_RD(pCurHcb->HCS_Base, TUL_XCtrl) | 0x80);
1784 /* wait until DMA xfer not pending */
1785 while (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND);
1786 }
1787 } else {
1788/*-------- DATA OUT -----------*/
1789 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0) {
1790 if (pCurHcb->HCS_ActTcs->TCS_JS_Period & TSC_WIDE_SCSI)
1791 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F) << 1;
1792 else
1793 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F);
1794 }
1795 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
1796 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT);
1797 /* wait Abort DMA xfer done */
1798 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
1799 }
1800 if ((cnt == 1) && (pCurHcb->HCS_Phase == DATA_OUT)) {
1801 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1802 if (wait_tulip(pCurHcb) == -1) {
1803 return (-1);
1804 }
1805 cnt = 0;
1806 } else {
1807 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0)
1808 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1809 }
1810 }
1811
1812 if (cnt == 0) {
1813 pCurScb->SCB_BufLen = 0;
1814 return (6); /* Go to state 6 */
1815 }
1816 /* Update active data pointer */
1817 xcnt = (long) pCurScb->SCB_BufLen - cnt; /* xcnt== bytes already xferred */
1818 pCurScb->SCB_BufLen = (U32) cnt; /* cnt == bytes left to be xferred */
1819 if (pCurScb->SCB_Flags & SCF_SG) {
1820 register SG *sgp;
1821 ULONG i;
1822
1823 sgp = &pCurScb->SCB_SGList[pCurScb->SCB_SGIdx];
1824 for (i = pCurScb->SCB_SGIdx; i < pCurScb->SCB_SGMax; sgp++, i++) {
1825 xcnt -= (long) sgp->SG_Len;
1826 if (xcnt < 0) { /* this sgp xfer half done */
1827 xcnt += (long) sgp->SG_Len; /* xcnt == bytes xferred in this sgp */
1828 sgp->SG_Ptr += (U32) xcnt; /* new ptr to be xfer */
1829 sgp->SG_Len -= (U32) xcnt; /* new len to be xfer */
1830 pCurScb->SCB_BufPtr += ((U32) (i - pCurScb->SCB_SGIdx) << 3);
1831 /* new SG table ptr */
1832 pCurScb->SCB_SGLen = (BYTE) (pCurScb->SCB_SGMax - i);
1833 /* new SG table len */
1834 pCurScb->SCB_SGIdx = (WORD) i;
1835 /* for next disc and come in this loop */
1836 return (4); /* Go to state 4 */
1837 }
1838 /* else (xcnt >= 0 , i.e. this sgp already xferred */
1839 } /* for */
1840 return (6); /* Go to state 6 */
1841 } else {
1842 pCurScb->SCB_BufPtr += (U32) xcnt;
1843 }
1844 return (4); /* Go to state 4 */
1845}
1846
1847/***************************************************************************/
1848/* state after Data phase */
1849int tul_state_6(HCS * pCurHcb)
1850{
1851 SCB *pCurScb = pCurHcb->HCS_ActScb;
1852
1853#if DEBUG_STATE
1854 printk("-s6-");
1855#endif
1856 for (;;) {
1857 switch (pCurHcb->HCS_Phase) {
1858 case STATUS_IN: /* Status phase */
1859 if ((tul_status_msg(pCurHcb)) == -1)
1860 return (-1);
1861 break;
1862
1863 case MSG_IN: /* Message in phase */
1864 pCurScb->SCB_NxtStat = 6;
1865 if ((tul_msgin(pCurHcb)) == -1)
1866 return (-1);
1867 break;
1868
1869 case MSG_OUT: /* Message out phase */
1870 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1871 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1872 if (wait_tulip(pCurHcb) == -1)
1873 return (-1);
1874 break;
1875
1876 case DATA_IN: /* Data in phase */
1877 return (tul_xpad_in(pCurHcb));
1878
1879 case DATA_OUT: /* Data out phase */
1880 return (tul_xpad_out(pCurHcb));
1881
1882 default:
1883 return (tul_bad_seq(pCurHcb));
1884 }
1885 }
1886}
1887
1888/***************************************************************************/
1889int tul_state_7(HCS * pCurHcb)
1890{
1891 int cnt, i;
1892
1893#if DEBUG_STATE
1894 printk("-s7-");
1895#endif
1896 /* flush SCSI FIFO */
1897 cnt = TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F;
1898 if (cnt) {
1899 for (i = 0; i < cnt; i++)
1900 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1901 }
1902 switch (pCurHcb->HCS_Phase) {
1903 case DATA_IN: /* Data in phase */
1904 case DATA_OUT: /* Data out phase */
1905 return (tul_bad_seq(pCurHcb));
1906 default:
1907 return (6); /* Go to state 6 */
1908 }
1909}
1910
1911/***************************************************************************/
1912int tul_xfer_data_in(HCS * pCurHcb)
1913{
1914 SCB *pCurScb = pCurHcb->HCS_ActScb;
1915
1916 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DOUT) {
1917 return (6); /* wrong direction */
1918 }
1919 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1920
1921 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_IN); /* 7/25/95 */
1922
1923 if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */
1924 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1925 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1926 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_IN);
1927 } else {
1928 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1929 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1930 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_IN);
1931 }
1932 pCurScb->SCB_NxtStat = 0x5;
1933 return (0); /* return to OS, wait xfer done , let jas_isr come in */
1934}
1935
1936
1937/***************************************************************************/
1938int tul_xfer_data_out(HCS * pCurHcb)
1939{
1940 SCB *pCurScb = pCurHcb->HCS_ActScb;
1941
1942 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DIN) {
1943 return (6); /* wrong direction */
1944 }
1945 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1946 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_OUT);
1947
1948 if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */
1949 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1950 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1951 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_OUT);
1952 } else {
1953 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1954 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1955 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_OUT);
1956 }
1957
1958 pCurScb->SCB_NxtStat = 0x5;
1959 return (0); /* return to OS, wait xfer done , let jas_isr come in */
1960}
1961
1962
1963/***************************************************************************/
1964int tul_xpad_in(HCS * pCurHcb)
1965{
1966 SCB *pCurScb = pCurHcb->HCS_ActScb;
1967 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1968
1969 if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1970 pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */
1971 }
1972 for (;;) {
1973 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
1974 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
1975 else
1976 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
1977
1978 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
1979 if ((wait_tulip(pCurHcb)) == -1) {
1980 return (-1);
1981 }
1982 if (pCurHcb->HCS_Phase != DATA_IN) {
1983 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1984 return (6);
1985 }
1986 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1987 }
1988}
1989
1990int tul_xpad_out(HCS * pCurHcb)
1991{
1992 SCB *pCurScb = pCurHcb->HCS_ActScb;
1993 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1994
1995 if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1996 pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */
1997 }
1998 for (;;) {
1999 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
2000 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
2001 else
2002 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2003
2004 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0);
2005 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2006 if ((wait_tulip(pCurHcb)) == -1) {
2007 return (-1);
2008 }
2009 if (pCurHcb->HCS_Phase != DATA_OUT) { /* Disable wide CPU to allow read 16 bits */
2010 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
2011 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2012 return (6);
2013 }
2014 }
2015}
2016
2017
2018/***************************************************************************/
2019int tul_status_msg(HCS * pCurHcb)
2020{ /* status & MSG_IN */
2021 SCB *pCurScb = pCurHcb->HCS_ActScb;
2022 BYTE msg;
2023
2024 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_CMD_COMP);
2025 if ((wait_tulip(pCurHcb)) == -1) {
2026 return (-1);
2027 }
2028 /* get status */
2029 pCurScb->SCB_TaStat = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2030
2031 if (pCurHcb->HCS_Phase == MSG_OUT) {
2032 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
2033 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2034 } else {
2035 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);
2036 }
2037 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2038 return (wait_tulip(pCurHcb));
2039 }
2040 if (pCurHcb->HCS_Phase == MSG_IN) {
2041 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2042 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { /* Parity error */
2043 if ((tul_msgin_accept(pCurHcb)) == -1)
2044 return (-1);
2045 if (pCurHcb->HCS_Phase != MSG_OUT)
2046 return (tul_bad_seq(pCurHcb));
2047 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2048 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2049 return (wait_tulip(pCurHcb));
2050 }
2051 if (msg == 0) { /* Command complete */
2052
2053 if ((pCurScb->SCB_TaStat & 0x18) == 0x10) { /* No link support */
2054 return (tul_bad_seq(pCurHcb));
2055 }
2056 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2057 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2058 return tul_wait_done_disc(pCurHcb);
2059
2060 }
2061 if ((msg == MSG_LINK_COMP) || (msg == MSG_LINK_FLAG)) {
2062 if ((pCurScb->SCB_TaStat & 0x18) == 0x10)
2063 return (tul_msgin_accept(pCurHcb));
2064 }
2065 }
2066 return (tul_bad_seq(pCurHcb));
2067}
2068
2069
2070/***************************************************************************/
2071/* scsi bus free */
2072int int_tul_busfree(HCS * pCurHcb)
2073{
2074 SCB *pCurScb = pCurHcb->HCS_ActScb;
2075
2076 if (pCurScb != NULL) {
2077 if (pCurScb->SCB_Status & SCB_SELECT) { /* selection timeout */
2078 tul_unlink_pend_scb(pCurHcb, pCurScb);
2079 pCurScb->SCB_HaStat = HOST_SEL_TOUT;
2080 tul_append_done_scb(pCurHcb, pCurScb);
2081 } else { /* Unexpected bus free */
2082 tul_unlink_busy_scb(pCurHcb, pCurScb);
2083 pCurScb->SCB_HaStat = HOST_BUS_FREE;
2084 tul_append_done_scb(pCurHcb, pCurScb);
2085 }
2086 pCurHcb->HCS_ActScb = NULL;
2087 pCurHcb->HCS_ActTcs = NULL;
2088 }
2089 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2090 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2091 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2092 return (-1);
2093}
2094
2095
2096/***************************************************************************/
2097/* scsi bus reset */
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]2098static int int_tul_scsi_rst(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2099{
2100 SCB *pCurScb;
2101 int i;
2102
2103 /* if DMA xfer is pending, abort DMA xfer */
2104 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & 0x01) {
2105 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
2106 /* wait Abort DMA xfer done */
2107 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & 0x04) == 0);
2108 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2109 }
2110 /* Abort all active & disconnected scb */
2111 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2112 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2113 tul_append_done_scb(pCurHcb, pCurScb);
2114 }
2115 pCurHcb->HCS_ActScb = NULL;
2116 pCurHcb->HCS_ActTcs = NULL;
2117
2118 /* clr sync nego. done flag */
2119 for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2120 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2121 }
2122 return (-1);
2123}
2124
2125
2126/***************************************************************************/
2127/* scsi reselection */
2128int int_tul_resel(HCS * pCurHcb)
2129{
2130 SCB *pCurScb;
2131 TCS *pCurTcb;
2132 BYTE tag, msg = 0;
2133 BYTE tar, lun;
2134
2135 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
2136 if (pCurScb->SCB_Status & SCB_SELECT) { /* if waiting for selection complete */
2137 pCurScb->SCB_Status &= ~SCB_SELECT;
2138 }
2139 pCurHcb->HCS_ActScb = NULL;
2140 }
2141 /* --------- get target id---------------------- */
2142 tar = TUL_RD(pCurHcb->HCS_Base, TUL_SBusId);
2143 /* ------ get LUN from Identify message----------- */
2144 lun = TUL_RD(pCurHcb->HCS_Base, TUL_SIdent) & 0x0F;
2145 /* 07/22/98 from 0x1F -> 0x0F */
2146 pCurTcb = &pCurHcb->HCS_Tcs[tar];
2147 pCurHcb->HCS_ActTcs = pCurTcb;
2148 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
2149 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
2150
2151
2152 /* ------------- tag queueing ? ------------------- */
2153 if (pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG) {
2154 if ((tul_msgin_accept(pCurHcb)) == -1)
2155 return (-1);
2156 if (pCurHcb->HCS_Phase != MSG_IN)
2157 goto no_tag;
2158 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2159 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2160 if ((wait_tulip(pCurHcb)) == -1)
2161 return (-1);
2162 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag Message */
2163
2164 if ((msg < MSG_STAG) || (msg > MSG_OTAG)) /* Is simple Tag */
2165 goto no_tag;
2166
2167 if ((tul_msgin_accept(pCurHcb)) == -1)
2168 return (-1);
2169
2170 if (pCurHcb->HCS_Phase != MSG_IN)
2171 goto no_tag;
2172
2173 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2174 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2175 if ((wait_tulip(pCurHcb)) == -1)
2176 return (-1);
2177 tag = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag ID */
2178 pCurScb = pCurHcb->HCS_Scb + tag;
2179 if ((pCurScb->SCB_Target != tar) || (pCurScb->SCB_Lun != lun)) {
2180 return tul_msgout_abort_tag(pCurHcb);
2181 }
2182 if (pCurScb->SCB_Status != SCB_BUSY) { /* 03/24/95 */
2183 return tul_msgout_abort_tag(pCurHcb);
2184 }
2185 pCurHcb->HCS_ActScb = pCurScb;
2186 if ((tul_msgin_accept(pCurHcb)) == -1)
2187 return (-1);
2188 } else { /* No tag */
2189 no_tag:
2190 if ((pCurScb = tul_find_busy_scb(pCurHcb, tar | (lun << 8))) == NULL) {
2191 return tul_msgout_abort_targ(pCurHcb);
2192 }
2193 pCurHcb->HCS_ActScb = pCurScb;
2194 if (!(pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG)) {
2195 if ((tul_msgin_accept(pCurHcb)) == -1)
2196 return (-1);
2197 }
2198 }
2199 return 0;
2200}
2201
2202
2203/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]2204static int int_tul_bad_seq(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2205{ /* target wrong phase */
2206 SCB *pCurScb;
2207 int i;
2208
2209 tul_reset_scsi(pCurHcb, 10);
2210
2211 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2212 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2213 tul_append_done_scb(pCurHcb, pCurScb);
2214 }
2215 for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2216 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2217 }
2218 return (-1);
2219}
2220
2221
2222/***************************************************************************/
2223int tul_msgout_abort_targ(HCS * pCurHcb)
2224{
2225
2226 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2227 if (tul_msgin_accept(pCurHcb) == -1)
2228 return (-1);
2229 if (pCurHcb->HCS_Phase != MSG_OUT)
2230 return (tul_bad_seq(pCurHcb));
2231
2232 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT);
2233 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2234
2235 return tul_wait_disc(pCurHcb);
2236}
2237
2238/***************************************************************************/
2239int tul_msgout_abort_tag(HCS * pCurHcb)
2240{
2241
2242 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2243 if (tul_msgin_accept(pCurHcb) == -1)
2244 return (-1);
2245 if (pCurHcb->HCS_Phase != MSG_OUT)
2246 return (tul_bad_seq(pCurHcb));
2247
2248 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT_TAG);
2249 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2250
2251 return tul_wait_disc(pCurHcb);
2252
2253}
2254
2255/***************************************************************************/
2256int tul_msgin(HCS * pCurHcb)
2257{
2258 TCS *pCurTcb;
2259
2260 for (;;) {
2261
2262 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2263
2264 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2265 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2266 if ((wait_tulip(pCurHcb)) == -1)
2267 return (-1);
2268
2269 switch (TUL_RD(pCurHcb->HCS_Base, TUL_SFifo)) {
2270 case MSG_DISC: /* Disconnect msg */
2271 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2272
2273 return tul_wait_disc(pCurHcb);
2274
2275 case MSG_SDP:
2276 case MSG_RESTORE:
2277 case MSG_NOP:
2278 tul_msgin_accept(pCurHcb);
2279 break;
2280
2281 case MSG_REJ: /* Clear ATN first */
2282 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal,
2283 (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
2284 pCurTcb = pCurHcb->HCS_ActTcs;
2285 if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync nego */
2286 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2287 }
2288 tul_msgin_accept(pCurHcb);
2289 break;
2290
2291 case MSG_EXTEND: /* extended msg */
2292 tul_msgin_extend(pCurHcb);
2293 break;
2294
2295 case MSG_IGNOREWIDE:
2296 tul_msgin_accept(pCurHcb);
2297 break;
2298
2299 /* get */
2300 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2301 if (wait_tulip(pCurHcb) == -1)
2302 return -1;
2303
2304 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0); /* put pad */
2305 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get IGNORE field */
2306 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get pad */
2307
2308 tul_msgin_accept(pCurHcb);
2309 break;
2310
2311 case MSG_COMP:
2312 {
2313 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2314 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2315 return tul_wait_done_disc(pCurHcb);
2316 }
2317 default:
2318 tul_msgout_reject(pCurHcb);
2319 break;
2320 }
2321 if (pCurHcb->HCS_Phase != MSG_IN)
2322 return (pCurHcb->HCS_Phase);
2323 }
2324 /* statement won't reach here */
2325}
2326
2327
2328
2329
2330/***************************************************************************/
2331int tul_msgout_reject(HCS * pCurHcb)
2332{
2333
2334 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2335
2336 if ((tul_msgin_accept(pCurHcb)) == -1)
2337 return (-1);
2338
2339 if (pCurHcb->HCS_Phase == MSG_OUT) {
2340 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_REJ); /* Msg reject */
2341 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2342 return (wait_tulip(pCurHcb));
2343 }
2344 return (pCurHcb->HCS_Phase);
2345}
2346
2347
2348
2349/***************************************************************************/
2350int tul_msgout_ide(HCS * pCurHcb)
2351{
2352 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_IDE); /* Initiator Detected Error */
2353 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2354 return (wait_tulip(pCurHcb));
2355}
2356
2357
2358/***************************************************************************/
2359int tul_msgin_extend(HCS * pCurHcb)
2360{
2361 BYTE len, idx;
2362
2363 if (tul_msgin_accept(pCurHcb) != MSG_IN)
2364 return (pCurHcb->HCS_Phase);
2365
2366 /* Get extended msg length */
2367 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2368 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2369 if (wait_tulip(pCurHcb) == -1)
2370 return (-1);
2371
2372 len = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2373 pCurHcb->HCS_Msg[0] = len;
2374 for (idx = 1; len != 0; len--) {
2375
2376 if ((tul_msgin_accept(pCurHcb)) != MSG_IN)
2377 return (pCurHcb->HCS_Phase);
2378 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2379 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2380 if (wait_tulip(pCurHcb) == -1)
2381 return (-1);
2382 pCurHcb->HCS_Msg[idx++] = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2383 }
2384 if (pCurHcb->HCS_Msg[1] == 1) { /* if it's synchronous data transfer request */
2385 if (pCurHcb->HCS_Msg[0] != 3) /* if length is not right */
2386 return (tul_msgout_reject(pCurHcb));
2387 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_SYNC_NEGO) { /* Set OFFSET=0 to do async, nego back */
2388 pCurHcb->HCS_Msg[3] = 0;
2389 } else {
2390 if ((tul_msgin_sync(pCurHcb) == 0) &&
2391 (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SYNC_DONE)) {
2392 tul_sync_done(pCurHcb);
2393 return (tul_msgin_accept(pCurHcb));
2394 }
2395 }
2396
2397 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2398 if ((tul_msgin_accept(pCurHcb)) != MSG_OUT)
2399 return (pCurHcb->HCS_Phase);
2400 /* sync msg out */
2401 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2402
2403 tul_sync_done(pCurHcb);
2404
2405 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2406 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2407 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);
2408 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2409 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[3]);
2410
2411 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2412 return (wait_tulip(pCurHcb));
2413 }
2414 if ((pCurHcb->HCS_Msg[0] != 2) || (pCurHcb->HCS_Msg[1] != 3))
2415 return (tul_msgout_reject(pCurHcb));
2416 /* if it's WIDE DATA XFER REQ */
2417 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) {
2418 pCurHcb->HCS_Msg[2] = 0;
2419 } else {
2420 if (pCurHcb->HCS_Msg[2] > 2) /* > 32 bits */
2421 return (tul_msgout_reject(pCurHcb));
2422 if (pCurHcb->HCS_Msg[2] == 2) { /* == 32 */
2423 pCurHcb->HCS_Msg[2] = 1;
2424 } else {
2425 if ((pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) == 0) {
2426 wdtr_done(pCurHcb);
2427 if ((pCurHcb->HCS_ActTcs->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2428 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2429 return (tul_msgin_accept(pCurHcb));
2430 }
2431 }
2432 }
2433 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2434
2435 if (tul_msgin_accept(pCurHcb) != MSG_OUT)
2436 return (pCurHcb->HCS_Phase);
2437 /* WDTR msg out */
2438 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2439 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2);
2440 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2441 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2442 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2443 return (wait_tulip(pCurHcb));
2444}
2445
2446/***************************************************************************/
2447int tul_msgin_sync(HCS * pCurHcb)
2448{
2449 char default_period;
2450
2451 default_period = tul_rate_tbl[pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SCSI_RATE];
2452 if (pCurHcb->HCS_Msg[3] > MAX_OFFSET) {
2453 pCurHcb->HCS_Msg[3] = MAX_OFFSET;
2454 if (pCurHcb->HCS_Msg[2] < default_period) {
2455 pCurHcb->HCS_Msg[2] = default_period;
2456 return 1;
2457 }
2458 if (pCurHcb->HCS_Msg[2] >= 59) { /* Change to async */
2459 pCurHcb->HCS_Msg[3] = 0;
2460 }
2461 return 1;
2462 }
2463 /* offset requests asynchronous transfers ? */
2464 if (pCurHcb->HCS_Msg[3] == 0) {
2465 return 0;
2466 }
2467 if (pCurHcb->HCS_Msg[2] < default_period) {
2468 pCurHcb->HCS_Msg[2] = default_period;
2469 return 1;
2470 }
2471 if (pCurHcb->HCS_Msg[2] >= 59) {
2472 pCurHcb->HCS_Msg[3] = 0;
2473 return 1;
2474 }
2475 return 0;
2476}
2477
2478
2479/***************************************************************************/
2480int wdtr_done(HCS * pCurHcb)
2481{
2482 pCurHcb->HCS_ActTcs->TCS_Flags &= ~TCF_SYNC_DONE;
2483 pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_WDTR_DONE;
2484
2485 pCurHcb->HCS_ActTcs->TCS_JS_Period = 0;
2486 if (pCurHcb->HCS_Msg[2]) { /* if 16 bit */
2487 pCurHcb->HCS_ActTcs->TCS_JS_Period |= TSC_WIDE_SCSI;
2488 }
2489 pCurHcb->HCS_ActTcs->TCS_SConfig0 &= ~TSC_ALT_PERIOD;
2490 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2491 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2492
2493 return 1;
2494}
2495
2496/***************************************************************************/
2497int tul_sync_done(HCS * pCurHcb)
2498{
2499 int i;
2500
2501 pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_SYNC_DONE;
2502
2503 if (pCurHcb->HCS_Msg[3]) {
2504 pCurHcb->HCS_ActTcs->TCS_JS_Period |= pCurHcb->HCS_Msg[3];
2505 for (i = 0; i < 8; i++) {
2506 if (tul_rate_tbl[i] >= pCurHcb->HCS_Msg[2]) /* pick the big one */
2507 break;
2508 }
2509 pCurHcb->HCS_ActTcs->TCS_JS_Period |= (i << 4);
2510 pCurHcb->HCS_ActTcs->TCS_SConfig0 |= TSC_ALT_PERIOD;
2511 }
2512 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2513 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2514
2515 return (-1);
2516}
2517
2518
2519int tul_post_scsi_rst(HCS * pCurHcb)
2520{
2521 SCB *pCurScb;
2522 TCS *pCurTcb;
2523 int i;
2524
2525 pCurHcb->HCS_ActScb = NULL;
2526 pCurHcb->HCS_ActTcs = NULL;
2527 pCurHcb->HCS_Flags = 0;
2528
2529 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2530 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2531 tul_append_done_scb(pCurHcb, pCurScb);
2532 }
2533 /* clear sync done flag */
2534 pCurTcb = &pCurHcb->HCS_Tcs[0];
2535 for (i = 0; i < pCurHcb->HCS_MaxTar; pCurTcb++, i++) {
2536 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2537 /* Initialize the sync. xfer register values to an asyn xfer */
2538 pCurTcb->TCS_JS_Period = 0;
2539 pCurTcb->TCS_SConfig0 = pCurHcb->HCS_SConf1;
2540 pCurHcb->HCS_ActTags[0] = 0; /* 07/22/98 */
2541 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY; /* 07/22/98 */
2542 } /* for */
2543
2544 return (-1);
2545}
2546
2547/***************************************************************************/
2548void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb)
2549{
2550 pCurScb->SCB_Status |= SCB_SELECT;
2551 pCurScb->SCB_NxtStat = 0x1;
2552 pCurHcb->HCS_ActScb = pCurScb;
2553 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2554 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SELATNSTOP);
2555 return;
2556}
2557
2558
2559/***************************************************************************/
2560void tul_select_atn(HCS * pCurHcb, SCB * pCurScb)
2561{
2562 int i;
2563
2564 pCurScb->SCB_Status |= SCB_SELECT;
2565 pCurScb->SCB_NxtStat = 0x2;
2566
2567 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2568 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2569 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2570 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2571 pCurHcb->HCS_ActScb = pCurScb;
2572 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN);
2573 return;
2574}
2575
2576/***************************************************************************/
2577void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb)
2578{
2579 int i;
2580
2581 pCurScb->SCB_Status |= SCB_SELECT;
2582 pCurScb->SCB_NxtStat = 0x2;
2583
2584 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2585 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
2586 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
2587 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2588 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2589 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2590 pCurHcb->HCS_ActScb = pCurScb;
2591 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN3);
2592 return;
2593}
2594
2595/***************************************************************************/
2596/* SCSI Bus Device Reset */
2597int tul_bus_device_reset(HCS * pCurHcb)
2598{
2599 SCB *pCurScb = pCurHcb->HCS_ActScb;
2600 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
2601 SCB *pTmpScb, *pPrevScb;
2602 BYTE tar;
2603
2604 if (pCurHcb->HCS_Phase != MSG_OUT) {
2605 return (int_tul_bad_seq(pCurHcb)); /* Unexpected phase */
2606 }
2607 tul_unlink_pend_scb(pCurHcb, pCurScb);
2608 tul_release_scb(pCurHcb, pCurScb);
2609
2610
2611 tar = pCurScb->SCB_Target; /* target */
2612 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
2613 /* clr sync. nego & WDTR flags 07/22/98 */
2614
2615 /* abort all SCB with same target */
2616 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
2617 while (pTmpScb != NULL) {
2618
2619 if (pTmpScb->SCB_Target == tar) {
2620 /* unlink it */
2621 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
2622 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
2623 pCurHcb->HCS_LastBusy = NULL;
2624 } else {
2625 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
2626 if (pTmpScb == pCurHcb->HCS_LastBusy)
2627 pCurHcb->HCS_LastBusy = pPrevScb;
2628 }
2629 pTmpScb->SCB_HaStat = HOST_ABORTED;
2630 tul_append_done_scb(pCurHcb, pTmpScb);
2631 }
2632 /* Previous haven't change */
2633 else {
2634 pPrevScb = pTmpScb;
2635 }
2636 pTmpScb = pTmpScb->SCB_NxtScb;
2637 }
2638
2639 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_DEVRST);
2640 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2641
2642 return tul_wait_disc(pCurHcb);
2643
2644}
2645
2646/***************************************************************************/
2647int tul_msgin_accept(HCS * pCurHcb)
2648{
2649 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2650 return (wait_tulip(pCurHcb));
2651}
2652
2653/***************************************************************************/
2654int wait_tulip(HCS * pCurHcb)
2655{
2656
2657 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2658 & TSS_INT_PENDING));
2659
2660 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2661 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
2662 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
2663
2664 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if SCSI bus reset detected */
2665 return (int_tul_resel(pCurHcb));
2666 }
2667 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) { /* if selected/reselected timeout interrupt */
2668 return (int_tul_busfree(pCurHcb));
2669 }
2670 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2671 return (int_tul_scsi_rst(pCurHcb));
2672 }
2673 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2674 if (pCurHcb->HCS_Flags & HCF_EXPECT_DONE_DISC) {
2675 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2676 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2677 pCurHcb->HCS_ActScb->SCB_HaStat = 0;
2678 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2679 pCurHcb->HCS_ActScb = NULL;
2680 pCurHcb->HCS_ActTcs = NULL;
2681 pCurHcb->HCS_Flags &= ~HCF_EXPECT_DONE_DISC;
2682 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2683 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2684 return (-1);
2685 }
2686 if (pCurHcb->HCS_Flags & HCF_EXPECT_DISC) {
2687 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2688 pCurHcb->HCS_ActScb = NULL;
2689 pCurHcb->HCS_ActTcs = NULL;
2690 pCurHcb->HCS_Flags &= ~HCF_EXPECT_DISC;
2691 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2692 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2693 return (-1);
2694 }
2695 return (int_tul_busfree(pCurHcb));
2696 }
2697 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) {
2698 return (pCurHcb->HCS_Phase);
2699 }
2700 return (pCurHcb->HCS_Phase);
2701}
2702/***************************************************************************/
2703int tul_wait_disc(HCS * pCurHcb)
2704{
2705
2706 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2707 & TSS_INT_PENDING));
2708
2709
2710 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2711
2712 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2713 return (int_tul_scsi_rst(pCurHcb));
2714 }
2715 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2716 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2717 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2718 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2719 pCurHcb->HCS_ActScb = NULL;
2720 return (-1);
2721 }
2722 return (tul_bad_seq(pCurHcb));
2723}
2724
2725/***************************************************************************/
2726int tul_wait_done_disc(HCS * pCurHcb)
2727{
2728
2729
2730 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2731 & TSS_INT_PENDING));
2732
2733 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2734
2735
2736 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2737 return (int_tul_scsi_rst(pCurHcb));
2738 }
2739 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2740 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2741 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2742 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2743 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2744
2745 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2746 pCurHcb->HCS_ActScb = NULL;
2747 return (-1);
2748 }
2749 return (tul_bad_seq(pCurHcb));
2750}
2751
2752static irqreturn_t i91u_intr(int irqno, void *dev_id, struct pt_regs *regs)
2753{
2754 struct Scsi_Host *dev = dev_id;
2755 unsigned long flags;
2756
2757 spin_lock_irqsave(dev->host_lock, flags);
2758 tul_isr((HCS *)dev->base);
2759 spin_unlock_irqrestore(dev->host_lock, flags);
2760 return IRQ_HANDLED;
2761}
2762
2763static int tul_NewReturnNumberOfAdapters(void)
2764{
2765 struct pci_dev *pDev = NULL; /* Start from none */
2766 int iAdapters = 0;
2767 long dRegValue;
2768 WORD wBIOS;
2769 int i = 0;
2770
2771 init_i91uAdapter_table();
2772
2773 for (i = 0; i < TULSZ(i91u_pci_devices); i++)
2774 {
2775 while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) {
2776 if (pci_enable_device(pDev))
2777 continue;
2778 pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue);
2779 wBIOS = (UWORD) (dRegValue & 0xFF);
2780 if (((dRegValue & 0xFF00) >> 8) == 0xFF)
2781 dRegValue = 0;
2782 wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8));
2783 if (pci_set_dma_mask(pDev, 0xffffffff)) {
2784 printk(KERN_WARNING
2785 "i91u: Could not set 32 bit DMA mask\n");
2786 continue;
2787 }
2788
2789 if (Addi91u_into_Adapter_table(wBIOS,
2790 (pDev->resource[0].start),
2791 pDev->irq,
2792 pDev->bus->number,
2793 (pDev->devfn >> 3)
2794 ) == 0)
2795 iAdapters++;
2796 }
2797 }
2798
2799 return (iAdapters);
2800}
2801
2802static int i91u_detect(struct scsi_host_template * tpnt)
2803{
2804 HCS *pHCB;
2805 struct Scsi_Host *hreg;
2806 unsigned long i; /* 01/14/98 */
2807 int ok = 0, iAdapters;
2808 ULONG dBiosAdr;
2809 BYTE *pbBiosAdr;
2810
2811 /* Get total number of adapters in the motherboard */
2812 iAdapters = tul_NewReturnNumberOfAdapters();
2813 if (iAdapters == 0) /* If no tulip founded, return */
2814 return (0);
2815
2816 tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters;
2817 /* Update actually channel number */
2818 if (tul_tag_enable) { /* 1.01i */
2819 tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE;
2820 } else {
2821 tul_num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */
2822 } /* Update actually SCBs per adapter */
2823
2824 /* Get total memory needed for HCS */
2825 i = tul_num_ch * sizeof(HCS);
2826 memset((unsigned char *) &tul_hcs[0], 0, i); /* Initialize tul_hcs 0 */
2827 /* Get total memory needed for SCB */
2828
2829 for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) {
2830 i = tul_num_ch * tul_num_scb * sizeof(SCB);
2831 if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL)
2832 break;
2833 }
2834 if (tul_scb == NULL) {
2835 printk("i91u: SCB memory allocation error\n");
2836 return (0);
2837 }
2838 memset((unsigned char *) tul_scb, 0, i);
2839
2840 for (i = 0, pHCB = &tul_hcs[0]; /* Get pointer for control block */
2841 i < tul_num_ch;
2842 i++, pHCB++) {
2843 get_tulipPCIConfig(pHCB, i);
2844
2845 dBiosAdr = pHCB->HCS_BIOS;
2846 dBiosAdr = (dBiosAdr << 4);
2847
2848 pbBiosAdr = phys_to_virt(dBiosAdr);
2849
2850 init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10);
2851 request_region(pHCB->HCS_Base, 256, "i91u"); /* Register */
2852
2853 pHCB->HCS_Index = i; /* 7/29/98 */
2854 hreg = scsi_register(tpnt, sizeof(HCS));
2855 if(hreg == NULL) {
2856 release_region(pHCB->HCS_Base, 256);
2857 return 0;
2858 }
2859 hreg->io_port = pHCB->HCS_Base;
2860 hreg->n_io_port = 0xff;
2861 hreg->can_queue = tul_num_scb; /* 03/05/98 */
2862 hreg->unique_id = pHCB->HCS_Base;
2863 hreg->max_id = pHCB->HCS_MaxTar;
2864 hreg->max_lun = 32; /* 10/21/97 */
2865 hreg->irq = pHCB->HCS_Intr;
2866 hreg->this_id = pHCB->HCS_SCSI_ID; /* Assign HCS index */
2867 hreg->base = (unsigned long)pHCB;
2868 hreg->sg_tablesize = TOTAL_SG_ENTRY; /* Maximun support is 32 */
2869
2870 /* Initial tulip chip */
2871 ok = request_irq(pHCB->HCS_Intr, i91u_intr, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
2872 if (ok < 0) {
2873 printk(KERN_WARNING "i91u: unable to request IRQ %d\n\n", pHCB->HCS_Intr);
2874 return 0;
2875 }
2876 }
2877
2878 tpnt->this_id = -1;
2879 tpnt->can_queue = 1;
2880
2881 return 1;
2882}
2883
2884static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, struct scsi_cmnd * SCpnt)
2885{ /* Create corresponding SCB */
2886 struct scatterlist *pSrbSG;
2887 SG *pSG; /* Pointer to SG list */
2888 int i;
2889 long TotalLen;
2890 dma_addr_t dma_addr;
2891
2892 pSCB->SCB_Post = i91uSCBPost; /* i91u's callback routine */
2893 pSCB->SCB_Srb = SCpnt;
2894 pSCB->SCB_Opcode = ExecSCSI;
2895 pSCB->SCB_Flags = SCF_POST; /* After SCSI done, call post routine */
2896 pSCB->SCB_Target = SCpnt->device->id;
2897 pSCB->SCB_Lun = SCpnt->device->lun;
2898 pSCB->SCB_Ident = SCpnt->device->lun | DISC_ALLOW;
2899
2900 pSCB->SCB_Flags |= SCF_SENSE; /* Turn on auto request sense */
2901 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->sense_buffer,
2902 SENSE_SIZE, DMA_FROM_DEVICE);
2903 pSCB->SCB_SensePtr = cpu_to_le32((u32)dma_addr);
2904 pSCB->SCB_SenseLen = cpu_to_le32(SENSE_SIZE);
2905 SCpnt->SCp.ptr = (char *)(unsigned long)dma_addr;
2906
2907 pSCB->SCB_CDBLen = SCpnt->cmd_len;
2908 pSCB->SCB_HaStat = 0;
2909 pSCB->SCB_TaStat = 0;
2910 memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len);
2911
2912 if (SCpnt->device->tagged_supported) { /* Tag Support */
2913 pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */
2914 } else {
2915 pSCB->SCB_TagMsg = 0; /* No tag support */
2916 }
2917 /* todo handle map_sg error */
2918 if (SCpnt->use_sg) {
2919 dma_addr = dma_map_single(&pHCB->pci_dev->dev, &pSCB->SCB_SGList[0],
2920 sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
2921 DMA_BIDIRECTIONAL);
2922 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2923 SCpnt->SCp.dma_handle = dma_addr;
2924
2925 pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
2926 pSCB->SCB_SGLen = dma_map_sg(&pHCB->pci_dev->dev, pSrbSG,
2927 SCpnt->use_sg, SCpnt->sc_data_direction);
2928
2929 pSCB->SCB_Flags |= SCF_SG; /* Turn on SG list flag */
2930 for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0]; /* 1.01g */
2931 i < pSCB->SCB_SGLen; i++, pSG++, pSrbSG++) {
2932 pSG->SG_Ptr = cpu_to_le32((u32)sg_dma_address(pSrbSG));
2933 TotalLen += pSG->SG_Len = cpu_to_le32((u32)sg_dma_len(pSrbSG));
2934 }
2935
2936 pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ?
2937 TotalLen : SCpnt->request_bufflen;
2938 } else if (SCpnt->request_bufflen) { /* Non SG */
2939 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->request_buffer,
2940 SCpnt->request_bufflen,
2941 SCpnt->sc_data_direction);
2942 SCpnt->SCp.dma_handle = dma_addr;
2943 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2944 pSCB->SCB_BufLen = cpu_to_le32((u32)SCpnt->request_bufflen);
2945 pSCB->SCB_SGLen = 0;
2946 } else {
2947 pSCB->SCB_BufLen = 0;
2948 pSCB->SCB_SGLen = 0;
2949 }
2950}
2951
2952static int i91u_queuecommand(struct scsi_cmnd *cmd,
2953 void (*done)(struct scsi_cmnd *))
2954{
2955 HCS *pHCB = (HCS *) cmd->device->host->base;
2956 register SCB *pSCB;
2957
2958 cmd->scsi_done = done;
2959
2960 pSCB = tul_alloc_scb(pHCB);
2961 if (!pSCB)
2962 return SCSI_MLQUEUE_HOST_BUSY;
2963
2964 i91uBuildSCB(pHCB, pSCB, cmd);
2965 tul_exec_scb(pHCB, pSCB);
2966 return 0;
2967}
2968
2969#if 0 /* no new EH yet */
2970/*
2971 * Abort a queued command
2972 * (commands that are on the bus can't be aborted easily)
2973 */
2974static int i91u_abort(struct scsi_cmnd * SCpnt)
2975{
2976 HCS *pHCB;
2977
2978 pHCB = (HCS *) SCpnt->device->host->base;
2979 return tul_abort_srb(pHCB, SCpnt);
2980}
2981
2982/*
2983 * Reset registers, reset a hanging bus and
2984 * kill active and disconnected commands for target w/o soft reset
2985 */
2986static int i91u_reset(struct scsi_cmnd * SCpnt, unsigned int reset_flags)
2987{ /* I need Host Control Block Information */
2988 HCS *pHCB;
2989
2990 pHCB = (HCS *) SCpnt->device->host->base;
2991
2992 if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET))
2993 return tul_reset_scsi_bus(pHCB);
2994 else
2995 return tul_device_reset(pHCB, SCpnt, SCpnt->device->id, reset_flags);
2996}
2997#endif
2998
2999static int i91u_bus_reset(struct scsi_cmnd * SCpnt)
3000{
3001 HCS *pHCB;
3002
3003 pHCB = (HCS *) SCpnt->device->host->base;
Jeff Garzik 68b3aa72005-05-28 07:56:31 -0400[diff] [blame]3004
3005 spin_lock_irq(SCpnt->device->host->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3006 tul_reset_scsi(pHCB, 0);
Jeff Garzik 68b3aa72005-05-28 07:56:31 -0400[diff] [blame]3007 spin_unlock_irq(SCpnt->device->host->host_lock);
3008
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3009 return SUCCESS;
3010}
3011
3012/*
3013 * Return the "logical geometry"
3014 */
3015static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
3016 sector_t capacity, int *info_array)
3017{
3018 HCS *pHcb; /* Point to Host adapter control block */
3019 TCS *pTcb;
3020
3021 pHcb = (HCS *) sdev->host->base;
3022 pTcb = &pHcb->HCS_Tcs[sdev->id];
3023
3024 if (pTcb->TCS_DrvHead) {
3025 info_array[0] = pTcb->TCS_DrvHead;
3026 info_array[1] = pTcb->TCS_DrvSector;
3027 info_array[2] = (unsigned long)capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector;
3028 } else {
3029 if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) {
3030 info_array[0] = 255;
3031 info_array[1] = 63;
3032 info_array[2] = (unsigned long)capacity / 255 / 63;
3033 } else {
3034 info_array[0] = 64;
3035 info_array[1] = 32;
3036 info_array[2] = (unsigned long)capacity >> 11;
3037 }
3038 }
3039
3040#if defined(DEBUG_BIOSPARAM)
3041 if (i91u_debug & debug_biosparam) {
3042 printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
3043 info_array[0], info_array[1], info_array[2]);
3044 printk("WARNING: check, if the bios geometry is correct.\n");
3045 }
3046#endif
3047
3048 return 0;
3049}
3050
3051static void i91u_unmap_cmnd(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
3052{
3053 /* auto sense buffer */
3054 if (cmnd->SCp.ptr) {
3055 dma_unmap_single(&pci_dev->dev,
3056 (dma_addr_t)((unsigned long)cmnd->SCp.ptr),
3057 SENSE_SIZE, DMA_FROM_DEVICE);
3058 cmnd->SCp.ptr = NULL;
3059 }
3060
3061 /* request buffer */
3062 if (cmnd->use_sg) {
3063 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3064 sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
3065 DMA_BIDIRECTIONAL);
3066
3067 dma_unmap_sg(&pci_dev->dev, cmnd->request_buffer,
3068 cmnd->use_sg,
3069 cmnd->sc_data_direction);
3070 } else if (cmnd->request_bufflen) {
3071 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3072 cmnd->request_bufflen,
3073 cmnd->sc_data_direction);
3074 }
3075}
3076
3077/*****************************************************************************
3078 Function name : i91uSCBPost
3079 Description : This is callback routine be called when tulip finish one
3080 SCSI command.
3081 Input : pHCB - Pointer to host adapter control block.
3082 pSCB - Pointer to SCSI control block.
3083 Output : None.
3084 Return : None.
3085*****************************************************************************/
3086static void i91uSCBPost(BYTE * pHcb, BYTE * pScb)
3087{
3088 struct scsi_cmnd *pSRB; /* Pointer to SCSI request block */
3089 HCS *pHCB;
3090 SCB *pSCB;
3091
3092 pHCB = (HCS *) pHcb;
3093 pSCB = (SCB *) pScb;
3094 if ((pSRB = pSCB->SCB_Srb) == 0) {
3095 printk("i91uSCBPost: SRB pointer is empty\n");
3096
3097 tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
3098 return;
3099 }
3100 switch (pSCB->SCB_HaStat) {
3101 case 0x0:
3102 case 0xa: /* Linked command complete without error and linked normally */
3103 case 0xb: /* Linked command complete without error interrupt generated */
3104 pSCB->SCB_HaStat = 0;
3105 break;
3106
3107 case 0x11: /* Selection time out-The initiator selection or target
3108 reselection was not complete within the SCSI Time out period */
3109 pSCB->SCB_HaStat = DID_TIME_OUT;
3110 break;
3111
3112 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
3113 phase sequence was requested by the target. The host adapter
3114 will generate a SCSI Reset Condition, notifying the host with
3115 a SCRD interrupt */
3116 pSCB->SCB_HaStat = DID_RESET;
3117 break;
3118
3119 case 0x1a: /* SCB Aborted. 07/21/98 */
3120 pSCB->SCB_HaStat = DID_ABORT;
3121 break;
3122
3123 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
3124 than was allocated by the Data Length field or the sum of the
3125 Scatter / Gather Data Length fields. */
3126 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
3127 case 0x16: /* Invalid SCB Operation Code. */
3128
3129 default:
3130 printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat);
3131 pSCB->SCB_HaStat = DID_ERROR; /* Couldn't find any better */
3132 break;
3133 }
3134
3135 pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
3136
3137 if (pSRB == NULL) {
3138 printk("pSRB is NULL\n");
3139 }
3140
3141 i91u_unmap_cmnd(pHCB->pci_dev, pSRB);
3142 pSRB->scsi_done(pSRB); /* Notify system DONE */
3143
3144 tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
3145}
3146
3147/*
3148 * Release ressources
3149 */
3150static int i91u_release(struct Scsi_Host *hreg)
3151{
3152 free_irq(hreg->irq, hreg);
3153 release_region(hreg->io_port, 256);
3154 return 0;
3155}
3156MODULE_LICENSE("Dual BSD/GPL");
3157
3158static struct scsi_host_template driver_template = {
3159 .proc_name = "INI9100U",
3160 .name = i91u_REVID,
3161 .detect = i91u_detect,
3162 .release = i91u_release,
3163 .queuecommand = i91u_queuecommand,
3164// .abort = i91u_abort,
3165// .reset = i91u_reset,
3166 .eh_bus_reset_handler = i91u_bus_reset,
3167 .bios_param = i91u_biosparam,
3168 .can_queue = 1,
3169 .this_id = 1,
3170 .sg_tablesize = SG_ALL,
3171 .cmd_per_lun = 1,
3172 .use_clustering = ENABLE_CLUSTERING,
3173};
3174#include "scsi_module.c"
3175