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gerrit-public.fairphone.software / kernel / msm-4.9 / 957d2df1801865eb1e63864bc63b970aa9c460ba / . / drivers / scsi / initio.c
blob: 0cc7f65b584ff4b84575da41ab307532b823f370 [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>
Matthias Gehre910638a2006-03-28 01:56:48 -0800[diff] [blame]130#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]131#include <asm/io.h>
132
133#include <scsi/scsi.h>
134#include <scsi/scsi_cmnd.h>
135#include <scsi/scsi_device.h>
136#include <scsi/scsi_host.h>
137#include <scsi/scsi_tcq.h>
138
139#include "initio.h"
140
141#define SENSE_SIZE 14
142
143#define i91u_MAXQUEUE 2
144#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
145
146#define INI_VENDOR_ID 0x1101 /* Initio's PCI vendor ID */
147#define DMX_VENDOR_ID 0x134a /* Domex's PCI vendor ID */
148#define I950_DEVICE_ID 0x9500 /* Initio's inic-950 product ID */
149#define I940_DEVICE_ID 0x9400 /* Initio's inic-940 product ID */
150#define I935_DEVICE_ID 0x9401 /* Initio's inic-935 product ID */
151#define I920_DEVICE_ID 0x0002 /* Initio's other product ID */
152
153#ifdef DEBUG_i91u
154static unsigned int i91u_debug = DEBUG_DEFAULT;
155#endif
156
157#define TULSZ(sz) (sizeof(sz) / sizeof(sz[0]))
158#define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
159
160typedef struct PCI_ID_Struc {
161 unsigned short vendor_id;
162 unsigned short device_id;
163} PCI_ID;
164
165static int tul_num_ch = 4; /* Maximum 4 adapters */
166static int tul_num_scb;
167static int tul_tag_enable = 1;
168static SCB *tul_scb;
169
170#ifdef DEBUG_i91u
171static int setup_debug = 0;
172#endif
173
174static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
175
176static const PCI_ID i91u_pci_devices[] = {
177 { INI_VENDOR_ID, I950_DEVICE_ID },
178 { INI_VENDOR_ID, I940_DEVICE_ID },
179 { INI_VENDOR_ID, I935_DEVICE_ID },
180 { INI_VENDOR_ID, I920_DEVICE_ID },
181 { DMX_VENDOR_ID, I920_DEVICE_ID },
182};
183
184#define DEBUG_INTERRUPT 0
185#define DEBUG_QUEUE 0
186#define DEBUG_STATE 0
187#define INT_DISC 0
188
189/*--- external functions --*/
190static void tul_se2_wait(void);
191
192/*--- forward refrence ---*/
193static SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun);
194static SCB *tul_find_done_scb(HCS * pCurHcb);
195
196static int tulip_main(HCS * pCurHcb);
197
198static int tul_next_state(HCS * pCurHcb);
199static int tul_state_1(HCS * pCurHcb);
200static int tul_state_2(HCS * pCurHcb);
201static int tul_state_3(HCS * pCurHcb);
202static int tul_state_4(HCS * pCurHcb);
203static int tul_state_5(HCS * pCurHcb);
204static int tul_state_6(HCS * pCurHcb);
205static int tul_state_7(HCS * pCurHcb);
206static int tul_xfer_data_in(HCS * pCurHcb);
207static int tul_xfer_data_out(HCS * pCurHcb);
208static int tul_xpad_in(HCS * pCurHcb);
209static int tul_xpad_out(HCS * pCurHcb);
210static int tul_status_msg(HCS * pCurHcb);
211
212static int tul_msgin(HCS * pCurHcb);
213static int tul_msgin_sync(HCS * pCurHcb);
214static int tul_msgin_accept(HCS * pCurHcb);
215static int tul_msgout_reject(HCS * pCurHcb);
216static int tul_msgin_extend(HCS * pCurHcb);
217
218static int tul_msgout_ide(HCS * pCurHcb);
219static int tul_msgout_abort_targ(HCS * pCurHcb);
220static int tul_msgout_abort_tag(HCS * pCurHcb);
221
222static int tul_bus_device_reset(HCS * pCurHcb);
223static void tul_select_atn(HCS * pCurHcb, SCB * pCurScb);
224static void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb);
225static void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb);
226static int int_tul_busfree(HCS * pCurHcb);
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]227static int int_tul_scsi_rst(HCS * pCurHcb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]228static int int_tul_bad_seq(HCS * pCurHcb);
229static int int_tul_resel(HCS * pCurHcb);
230static int tul_sync_done(HCS * pCurHcb);
231static int wdtr_done(HCS * pCurHcb);
232static int wait_tulip(HCS * pCurHcb);
233static int tul_wait_done_disc(HCS * pCurHcb);
234static int tul_wait_disc(HCS * pCurHcb);
235static void tulip_scsi(HCS * pCurHcb);
236static int tul_post_scsi_rst(HCS * pCurHcb);
237
238static void tul_se2_ew_en(WORD CurBase);
239static void tul_se2_ew_ds(WORD CurBase);
240static int tul_se2_rd_all(WORD CurBase);
241static void tul_se2_update_all(WORD CurBase); /* setup default pattern */
242static void tul_read_eeprom(WORD CurBase);
243
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]244 /* ---- INTERNAL VARIABLES ---- */
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]245static HCS tul_hcs[MAX_SUPPORTED_ADAPTERS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]246static INI_ADPT_STRUCT i91u_adpt[MAX_SUPPORTED_ADAPTERS];
247
248/*NVRAM nvram, *nvramp = &nvram; */
249static NVRAM i91unvram;
250static NVRAM *i91unvramp;
251
252
253
254static UCHAR i91udftNvRam[64] =
255{
256/*----------- header -----------*/
257 0x25, 0xc9, /* Signature */
258 0x40, /* Size */
259 0x01, /* Revision */
260 /* -- Host Adapter Structure -- */
261 0x95, /* ModelByte0 */
262 0x00, /* ModelByte1 */
263 0x00, /* ModelInfo */
264 0x01, /* NumOfCh */
265 NBC1_DEFAULT, /* BIOSConfig1 */
266 0, /* BIOSConfig2 */
267 0, /* HAConfig1 */
268 0, /* HAConfig2 */
269 /* SCSI channel 0 and target Structure */
270 7, /* SCSIid */
271 NCC1_DEFAULT, /* SCSIconfig1 */
272 0, /* SCSIconfig2 */
273 0x10, /* NumSCSItarget */
274
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 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
279
280 /* SCSI channel 1 and target Structure */
281 7, /* SCSIid */
282 NCC1_DEFAULT, /* SCSIconfig1 */
283 0, /* SCSIconfig2 */
284 0x10, /* NumSCSItarget */
285
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 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
290 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
291 0, 0}; /* - CheckSum - */
292
293
294static UCHAR tul_rate_tbl[8] = /* fast 20 */
295{
296 /* nanosecond devide by 4 */
297 12, /* 50ns, 20M */
298 18, /* 75ns, 13.3M */
299 25, /* 100ns, 10M */
300 31, /* 125ns, 8M */
301 37, /* 150ns, 6.6M */
302 43, /* 175ns, 5.7M */
303 50, /* 200ns, 5M */
304 62 /* 250ns, 4M */
305};
306
307static void tul_do_pause(unsigned amount)
308{ /* Pause for amount jiffies */
309 unsigned long the_time = jiffies + amount;
310
311 while (time_before_eq(jiffies, the_time));
312}
313
314/*-- forward reference --*/
315
316/*******************************************************************
317 Use memeory refresh time ~ 15us * 2
318********************************************************************/
319void tul_se2_wait(void)
320{
321#if 1
322 udelay(30);
323#else
324 UCHAR readByte;
325
326 readByte = TUL_RD(0, 0x61);
327 if ((readByte & 0x10) == 0x10) {
328 for (;;) {
329 readByte = TUL_RD(0, 0x61);
330 if ((readByte & 0x10) == 0x10)
331 break;
332 }
333 for (;;) {
334 readByte = TUL_RD(0, 0x61);
335 if ((readByte & 0x10) != 0x10)
336 break;
337 }
338 } else {
339 for (;;) {
340 readByte = TUL_RD(0, 0x61);
341 if ((readByte & 0x10) == 0x10)
342 break;
343 }
344 for (;;) {
345 readByte = TUL_RD(0, 0x61);
346 if ((readByte & 0x10) != 0x10)
347 break;
348 }
349 }
350#endif
351}
352
353
354/******************************************************************
355 Input: instruction for Serial E2PROM
356
357 EX: se2_rd(0 call se2_instr() to send address and read command
358
359 StartBit OP_Code Address Data
360 --------- -------- ------------------ -------
361 1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0
362
363 +-----------------------------------------------------
364 |
365 CS -----+
366 +--+ +--+ +--+ +--+ +--+
367 ^ | ^ | ^ | ^ | ^ |
368 | | | | | | | | | |
369 CLK -------+ +--+ +--+ +--+ +--+ +--
370 (leading edge trigger)
371
372 +--1-----1--+
373 | SB OP | OP A5 A4
374 DI ----+ +--0------------------
375 (address and cmd sent to nvram)
376
377 -------------------------------------------+
378 |
379 DO +---
380 (data sent from nvram)
381
382
383******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]384static void tul_se2_instr(WORD CurBase, UCHAR instr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]385{
386 int i;
387 UCHAR b;
388
389 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* cs+start bit */
390 tul_se2_wait();
391 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK | SE2DO); /* +CLK */
392 tul_se2_wait();
393
394 for (i = 0; i < 8; i++) {
395 if (instr & 0x80)
396 b = SE2CS | SE2DO; /* -CLK+dataBit */
397 else
398 b = SE2CS; /* -CLK */
399 TUL_WR(CurBase + TUL_NVRAM, b);
400 tul_se2_wait();
401 TUL_WR(CurBase + TUL_NVRAM, b | SE2CLK); /* +CLK */
402 tul_se2_wait();
403 instr <<= 1;
404 }
405 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
406 tul_se2_wait();
407 return;
408}
409
410
411/******************************************************************
412 Function name : tul_se2_ew_en
413 Description : Enable erase/write state of serial EEPROM
414******************************************************************/
415void tul_se2_ew_en(WORD CurBase)
416{
417 tul_se2_instr(CurBase, 0x30); /* EWEN */
418 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
419 tul_se2_wait();
420 return;
421}
422
423
424/************************************************************************
425 Disable erase/write state of serial EEPROM
426*************************************************************************/
427void tul_se2_ew_ds(WORD CurBase)
428{
429 tul_se2_instr(CurBase, 0); /* EWDS */
430 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
431 tul_se2_wait();
432 return;
433}
434
435
436/******************************************************************
437 Input :address of Serial E2PROM
438 Output :value stored in Serial E2PROM
439*******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]440static USHORT tul_se2_rd(WORD CurBase, ULONG adr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]441{
442 UCHAR instr, readByte;
443 USHORT readWord;
444 int i;
445
446 instr = (UCHAR) (adr | 0x80);
447 tul_se2_instr(CurBase, instr); /* READ INSTR */
448 readWord = 0;
449
450 for (i = 15; i >= 0; i--) {
451 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
452 tul_se2_wait();
453 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
454
455 /* sample data after the following edge of clock */
456 readByte = TUL_RD(CurBase, TUL_NVRAM);
457 readByte &= SE2DI;
458 readWord += (readByte << i);
459 tul_se2_wait(); /* 6/20/95 */
460 }
461
462 TUL_WR(CurBase + TUL_NVRAM, 0); /* no chip select */
463 tul_se2_wait();
464 return readWord;
465}
466
467
468/******************************************************************
469 Input: new value in Serial E2PROM, address of Serial E2PROM
470*******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]471static void tul_se2_wr(WORD CurBase, UCHAR adr, USHORT writeWord)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]472{
473 UCHAR readByte;
474 UCHAR instr;
475 int i;
476
477 instr = (UCHAR) (adr | 0x40);
478 tul_se2_instr(CurBase, instr); /* WRITE INSTR */
479 for (i = 15; i >= 0; i--) {
480 if (writeWord & 0x8000)
481 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* -CLK+dataBit 1 */
482 else
483 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK+dataBit 0 */
484 tul_se2_wait();
485 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
486 tul_se2_wait();
487 writeWord <<= 1;
488 }
489 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
490 tul_se2_wait();
491 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
492 tul_se2_wait();
493
494 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* +CS */
495 tul_se2_wait();
496
497 for (;;) {
498 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
499 tul_se2_wait();
500 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
501 tul_se2_wait();
502 if ((readByte = TUL_RD(CurBase, TUL_NVRAM)) & SE2DI)
503 break; /* write complete */
504 }
505 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
506 return;
507}
508
509
510/***********************************************************************
511 Read SCSI H/A configuration parameters from serial EEPROM
512************************************************************************/
513int tul_se2_rd_all(WORD CurBase)
514{
515 int i;
516 ULONG chksum = 0;
517 USHORT *np;
518
519 i91unvramp = &i91unvram;
520 np = (USHORT *) i91unvramp;
521 for (i = 0; i < 32; i++) {
522 *np++ = tul_se2_rd(CurBase, i);
523 }
524
525/*--------------------Is signature "ini" ok ? ----------------*/
526 if (i91unvramp->NVM_Signature != INI_SIGNATURE)
527 return -1;
528/*---------------------- Is ckecksum ok ? ----------------------*/
529 np = (USHORT *) i91unvramp;
530 for (i = 0; i < 31; i++)
531 chksum += *np++;
532 if (i91unvramp->NVM_CheckSum != (USHORT) chksum)
533 return -1;
534 return 1;
535}
536
537
538/***********************************************************************
539 Update SCSI H/A configuration parameters from serial EEPROM
540************************************************************************/
541void tul_se2_update_all(WORD CurBase)
542{ /* setup default pattern */
543 int i;
544 ULONG chksum = 0;
545 USHORT *np, *np1;
546
547 i91unvramp = &i91unvram;
548 /* Calculate checksum first */
549 np = (USHORT *) i91udftNvRam;
550 for (i = 0; i < 31; i++)
551 chksum += *np++;
552 *np = (USHORT) chksum;
553 tul_se2_ew_en(CurBase); /* Enable write */
554
555 np = (USHORT *) i91udftNvRam;
556 np1 = (USHORT *) i91unvramp;
557 for (i = 0; i < 32; i++, np++, np1++) {
558 if (*np != *np1) {
559 tul_se2_wr(CurBase, i, *np);
560 }
561 }
562
563 tul_se2_ew_ds(CurBase); /* Disable write */
564 return;
565}
566
567/*************************************************************************
568 Function name : read_eeprom
569**************************************************************************/
570void tul_read_eeprom(WORD CurBase)
571{
572 UCHAR gctrl;
573
574 i91unvramp = &i91unvram;
575/*------Enable EEProm programming ---*/
576 gctrl = TUL_RD(CurBase, TUL_GCTRL);
577 TUL_WR(CurBase + TUL_GCTRL, gctrl | TUL_GCTRL_EEPROM_BIT);
578 if (tul_se2_rd_all(CurBase) != 1) {
579 tul_se2_update_all(CurBase); /* setup default pattern */
580 tul_se2_rd_all(CurBase); /* load again */
581 }
582/*------ Disable EEProm programming ---*/
583 gctrl = TUL_RD(CurBase, TUL_GCTRL);
584 TUL_WR(CurBase + TUL_GCTRL, gctrl & ~TUL_GCTRL_EEPROM_BIT);
585} /* read_eeprom */
586
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]587static int Addi91u_into_Adapter_table(WORD wBIOS, WORD wBASE, BYTE bInterrupt,
588 BYTE bBus, BYTE bDevice)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]589{
590 int i, j;
591
592 for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) {
593 if (i91u_adpt[i].ADPT_BIOS < wBIOS)
594 continue;
595 if (i91u_adpt[i].ADPT_BIOS == wBIOS) {
596 if (i91u_adpt[i].ADPT_BASE == wBASE) {
597 if (i91u_adpt[i].ADPT_Bus != 0xFF)
598 return 1;
599 } else if (i91u_adpt[i].ADPT_BASE < wBASE)
600 continue;
601 }
602 for (j = MAX_SUPPORTED_ADAPTERS - 1; j > i; j--) {
603 i91u_adpt[j].ADPT_BASE = i91u_adpt[j - 1].ADPT_BASE;
604 i91u_adpt[j].ADPT_INTR = i91u_adpt[j - 1].ADPT_INTR;
605 i91u_adpt[j].ADPT_BIOS = i91u_adpt[j - 1].ADPT_BIOS;
606 i91u_adpt[j].ADPT_Bus = i91u_adpt[j - 1].ADPT_Bus;
607 i91u_adpt[j].ADPT_Device = i91u_adpt[j - 1].ADPT_Device;
608 }
609 i91u_adpt[i].ADPT_BASE = wBASE;
610 i91u_adpt[i].ADPT_INTR = bInterrupt;
611 i91u_adpt[i].ADPT_BIOS = wBIOS;
612 i91u_adpt[i].ADPT_Bus = bBus;
613 i91u_adpt[i].ADPT_Device = bDevice;
614 return 0;
615 }
616 return 1;
617}
618
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]619static void init_i91uAdapter_table(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]620{
621 int i;
622
623 for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) { /* Initialize adapter structure */
624 i91u_adpt[i].ADPT_BIOS = 0xffff;
625 i91u_adpt[i].ADPT_BASE = 0xffff;
626 i91u_adpt[i].ADPT_INTR = 0xff;
627 i91u_adpt[i].ADPT_Bus = 0xff;
628 i91u_adpt[i].ADPT_Device = 0xff;
629 }
630 return;
631}
632
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]633static void tul_stop_bm(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]634{
635
636 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
637 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
638 /* wait Abort DMA xfer done */
639 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
640 }
641 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
642}
643
644/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]645static void get_tulipPCIConfig(HCS * pCurHcb, int ch_idx)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]646{
647 pCurHcb->HCS_Base = i91u_adpt[ch_idx].ADPT_BASE; /* Supply base address */
648 pCurHcb->HCS_BIOS = i91u_adpt[ch_idx].ADPT_BIOS; /* Supply BIOS address */
649 pCurHcb->HCS_Intr = i91u_adpt[ch_idx].ADPT_INTR; /* Supply interrupt line */
650 return;
651}
652
653/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]654static int tul_reset_scsi(HCS * pCurHcb, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]655{
656 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_BUS);
657
658 while (!((pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt)) & TSS_SCSIRST_INT));
659 /* reset tulip chip */
660
661 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, 0);
662
663 /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
664 /* SONY 5200 tape drive won't work if only stall for 1 sec */
665 tul_do_pause(seconds * HZ);
666
667 TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
668
669 return (SCSI_RESET_SUCCESS);
670}
671
672/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]673static int init_tulip(HCS * pCurHcb, SCB * scbp, int tul_num_scb,
674 BYTE * pbBiosAdr, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]675{
676 int i;
677 BYTE *pwFlags;
678 BYTE *pbHeads;
679 SCB *pTmpScb, *pPrevScb = NULL;
680
681 pCurHcb->HCS_NumScbs = tul_num_scb;
682 pCurHcb->HCS_Semaph = 1;
683 spin_lock_init(&pCurHcb->HCS_SemaphLock);
684 pCurHcb->HCS_JSStatus0 = 0;
685 pCurHcb->HCS_Scb = scbp;
686 pCurHcb->HCS_NxtPend = scbp;
687 pCurHcb->HCS_NxtAvail = scbp;
688 for (i = 0, pTmpScb = scbp; i < tul_num_scb; i++, pTmpScb++) {
689 pTmpScb->SCB_TagId = i;
690 if (i != 0)
691 pPrevScb->SCB_NxtScb = pTmpScb;
692 pPrevScb = pTmpScb;
693 }
694 pPrevScb->SCB_NxtScb = NULL;
695 pCurHcb->HCS_ScbEnd = pTmpScb;
696 pCurHcb->HCS_FirstAvail = scbp;
697 pCurHcb->HCS_LastAvail = pPrevScb;
698 spin_lock_init(&pCurHcb->HCS_AvailLock);
699 pCurHcb->HCS_FirstPend = NULL;
700 pCurHcb->HCS_LastPend = NULL;
701 pCurHcb->HCS_FirstBusy = NULL;
702 pCurHcb->HCS_LastBusy = NULL;
703 pCurHcb->HCS_FirstDone = NULL;
704 pCurHcb->HCS_LastDone = NULL;
705 pCurHcb->HCS_ActScb = NULL;
706 pCurHcb->HCS_ActTcs = NULL;
707
708 tul_read_eeprom(pCurHcb->HCS_Base);
709/*---------- get H/A configuration -------------*/
710 if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
711 pCurHcb->HCS_MaxTar = 8;
712 else
713 pCurHcb->HCS_MaxTar = 16;
714
715 pCurHcb->HCS_Config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
716
717 pCurHcb->HCS_SCSI_ID = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
718 pCurHcb->HCS_IdMask = ~(1 << pCurHcb->HCS_SCSI_ID);
719
Olaf Hering44456d32005-07-27 11:45:17 -0700[diff] [blame]720#ifdef CHK_PARITY
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]721 /* Enable parity error response */
722 TUL_WR(pCurHcb->HCS_Base + TUL_PCMD, TUL_RD(pCurHcb->HCS_Base, TUL_PCMD) | 0x40);
723#endif
724
725 /* Mask all the interrupt */
726 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
727
728 tul_stop_bm(pCurHcb);
729 /* --- Initialize the tulip --- */
730 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_CHIP);
731
732 /* program HBA's SCSI ID */
733 TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, pCurHcb->HCS_SCSI_ID << 4);
734
735 /* Enable Initiator Mode ,phase latch,alternate sync period mode,
736 disable SCSI reset */
737 if (pCurHcb->HCS_Config & HCC_EN_PAR)
738 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
739 else
740 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT);
741 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_SConf1);
742
743 /* Enable HW reselect */
744 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
745
746 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, 0);
747
748 /* selection time out = 250 ms */
749 TUL_WR(pCurHcb->HCS_Base + TUL_STimeOut, 153);
750
751/*--------- Enable SCSI terminator -----*/
752 TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, (pCurHcb->HCS_Config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)));
753 TUL_WR(pCurHcb->HCS_Base + TUL_GCTRL1,
754 ((pCurHcb->HCS_Config & HCC_AUTO_TERM) >> 4) | (TUL_RD(pCurHcb->HCS_Base, TUL_GCTRL1) & 0xFE));
755
756 for (i = 0,
757 pwFlags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
758 pbHeads = pbBiosAdr + 0x180;
759 i < pCurHcb->HCS_MaxTar;
760 i++, pwFlags++) {
761 pCurHcb->HCS_Tcs[i].TCS_Flags = *pwFlags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
762 if (pCurHcb->HCS_Tcs[i].TCS_Flags & TCF_EN_255)
763 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
764 else
765 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
766 pCurHcb->HCS_Tcs[i].TCS_JS_Period = 0;
767 pCurHcb->HCS_Tcs[i].TCS_SConfig0 = pCurHcb->HCS_SConf1;
768 pCurHcb->HCS_Tcs[i].TCS_DrvHead = *pbHeads++;
769 if (pCurHcb->HCS_Tcs[i].TCS_DrvHead == 255)
770 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
771 else
772 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
773 pCurHcb->HCS_Tcs[i].TCS_DrvSector = *pbHeads++;
774 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY;
775 pCurHcb->HCS_ActTags[i] = 0;
776 pCurHcb->HCS_MaxTags[i] = 0xFF;
777 } /* for */
778 printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
779 pCurHcb->HCS_Base, pCurHcb->HCS_Intr,
780 pCurHcb->HCS_BIOS, pCurHcb->HCS_SCSI_ID);
781/*------------------- reset SCSI Bus ---------------------------*/
782 if (pCurHcb->HCS_Config & HCC_SCSI_RESET) {
783 printk("i91u: Reset SCSI Bus ... \n");
784 tul_reset_scsi(pCurHcb, seconds);
785 }
786 TUL_WR(pCurHcb->HCS_Base + TUL_SCFG1, 0x17);
787 TUL_WR(pCurHcb->HCS_Base + TUL_SIntEnable, 0xE9);
788 return (0);
789}
790
791/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]792static SCB *tul_alloc_scb(HCS * hcsp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]793{
794 SCB *pTmpScb;
795 ULONG flags;
796 spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
797 if ((pTmpScb = hcsp->HCS_FirstAvail) != NULL) {
798#if DEBUG_QUEUE
799 printk("find scb at %08lx\n", (ULONG) pTmpScb);
800#endif
801 if ((hcsp->HCS_FirstAvail = pTmpScb->SCB_NxtScb) == NULL)
802 hcsp->HCS_LastAvail = NULL;
803 pTmpScb->SCB_NxtScb = NULL;
804 pTmpScb->SCB_Status = SCB_RENT;
805 }
806 spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
807 return (pTmpScb);
808}
809
810/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]811static void tul_release_scb(HCS * hcsp, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]812{
813 ULONG flags;
814
815#if DEBUG_QUEUE
816 printk("Release SCB %lx; ", (ULONG) scbp);
817#endif
818 spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
819 scbp->SCB_Srb = NULL;
820 scbp->SCB_Status = 0;
821 scbp->SCB_NxtScb = NULL;
822 if (hcsp->HCS_LastAvail != NULL) {
823 hcsp->HCS_LastAvail->SCB_NxtScb = scbp;
824 hcsp->HCS_LastAvail = scbp;
825 } else {
826 hcsp->HCS_FirstAvail = scbp;
827 hcsp->HCS_LastAvail = scbp;
828 }
829 spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
830}
831
832/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]833static void tul_append_pend_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]834{
835
836#if DEBUG_QUEUE
837 printk("Append pend SCB %lx; ", (ULONG) scbp);
838#endif
839 scbp->SCB_Status = SCB_PEND;
840 scbp->SCB_NxtScb = NULL;
841 if (pCurHcb->HCS_LastPend != NULL) {
842 pCurHcb->HCS_LastPend->SCB_NxtScb = scbp;
843 pCurHcb->HCS_LastPend = scbp;
844 } else {
845 pCurHcb->HCS_FirstPend = scbp;
846 pCurHcb->HCS_LastPend = scbp;
847 }
848}
849
850/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]851static void tul_push_pend_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]852{
853
854#if DEBUG_QUEUE
855 printk("Push pend SCB %lx; ", (ULONG) scbp);
856#endif
857 scbp->SCB_Status = SCB_PEND;
858 if ((scbp->SCB_NxtScb = pCurHcb->HCS_FirstPend) != NULL) {
859 pCurHcb->HCS_FirstPend = scbp;
860 } else {
861 pCurHcb->HCS_FirstPend = scbp;
862 pCurHcb->HCS_LastPend = scbp;
863 }
864}
865
866/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]867static SCB *tul_find_first_pend_scb(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]868{
869 SCB *pFirstPend;
870
871
872 pFirstPend = pCurHcb->HCS_FirstPend;
873 while (pFirstPend != NULL) {
874 if (pFirstPend->SCB_Opcode != ExecSCSI) {
875 return (pFirstPend);
876 }
877 if (pFirstPend->SCB_TagMsg == 0) {
878 if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] == 0) &&
879 !(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
880 return (pFirstPend);
881 }
882 } else {
883 if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] >=
884 pCurHcb->HCS_MaxTags[pFirstPend->SCB_Target]) |
885 (pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
886 pFirstPend = pFirstPend->SCB_NxtScb;
887 continue;
888 }
889 return (pFirstPend);
890 }
891 pFirstPend = pFirstPend->SCB_NxtScb;
892 }
893
894
895 return (pFirstPend);
896}
897/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]898static void tul_unlink_pend_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]899{
900 SCB *pTmpScb, *pPrevScb;
901
902#if DEBUG_QUEUE
903 printk("unlink pend SCB %lx; ", (ULONG) pCurScb);
904#endif
905
906 pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend;
907 while (pTmpScb != NULL) {
908 if (pCurScb == pTmpScb) { /* Unlink this SCB */
909 if (pTmpScb == pCurHcb->HCS_FirstPend) {
910 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
911 pCurHcb->HCS_LastPend = NULL;
912 } else {
913 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
914 if (pTmpScb == pCurHcb->HCS_LastPend)
915 pCurHcb->HCS_LastPend = pPrevScb;
916 }
917 pTmpScb->SCB_NxtScb = NULL;
918 break;
919 }
920 pPrevScb = pTmpScb;
921 pTmpScb = pTmpScb->SCB_NxtScb;
922 }
923 return;
924}
925/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]926static void tul_append_busy_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]927{
928
929#if DEBUG_QUEUE
930 printk("append busy SCB %lx; ", (ULONG) scbp);
931#endif
932 if (scbp->SCB_TagMsg)
933 pCurHcb->HCS_ActTags[scbp->SCB_Target]++;
934 else
935 pCurHcb->HCS_Tcs[scbp->SCB_Target].TCS_Flags |= TCF_BUSY;
936 scbp->SCB_Status = SCB_BUSY;
937 scbp->SCB_NxtScb = NULL;
938 if (pCurHcb->HCS_LastBusy != NULL) {
939 pCurHcb->HCS_LastBusy->SCB_NxtScb = scbp;
940 pCurHcb->HCS_LastBusy = scbp;
941 } else {
942 pCurHcb->HCS_FirstBusy = scbp;
943 pCurHcb->HCS_LastBusy = scbp;
944 }
945}
946
947/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]948static SCB *tul_pop_busy_scb(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]949{
950 SCB *pTmpScb;
951
952
953 if ((pTmpScb = pCurHcb->HCS_FirstBusy) != NULL) {
954 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
955 pCurHcb->HCS_LastBusy = NULL;
956 pTmpScb->SCB_NxtScb = NULL;
957 if (pTmpScb->SCB_TagMsg)
958 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
959 else
960 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
961 }
962#if DEBUG_QUEUE
963 printk("Pop busy SCB %lx; ", (ULONG) pTmpScb);
964#endif
965 return (pTmpScb);
966}
967
968/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]969static void tul_unlink_busy_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]970{
971 SCB *pTmpScb, *pPrevScb;
972
973#if DEBUG_QUEUE
974 printk("unlink busy SCB %lx; ", (ULONG) pCurScb);
975#endif
976
977 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
978 while (pTmpScb != NULL) {
979 if (pCurScb == pTmpScb) { /* Unlink this SCB */
980 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
981 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
982 pCurHcb->HCS_LastBusy = NULL;
983 } else {
984 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
985 if (pTmpScb == pCurHcb->HCS_LastBusy)
986 pCurHcb->HCS_LastBusy = pPrevScb;
987 }
988 pTmpScb->SCB_NxtScb = NULL;
989 if (pTmpScb->SCB_TagMsg)
990 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
991 else
992 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
993 break;
994 }
995 pPrevScb = pTmpScb;
996 pTmpScb = pTmpScb->SCB_NxtScb;
997 }
998 return;
999}
1000
1001/***************************************************************************/
1002SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun)
1003{
1004 SCB *pTmpScb, *pPrevScb;
1005 WORD scbp_tarlun;
1006
1007
1008 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
1009 while (pTmpScb != NULL) {
1010 scbp_tarlun = (pTmpScb->SCB_Lun << 8) | (pTmpScb->SCB_Target);
1011 if (scbp_tarlun == tarlun) { /* Unlink this SCB */
1012 break;
1013 }
1014 pPrevScb = pTmpScb;
1015 pTmpScb = pTmpScb->SCB_NxtScb;
1016 }
1017#if DEBUG_QUEUE
1018 printk("find busy SCB %lx; ", (ULONG) pTmpScb);
1019#endif
1020 return (pTmpScb);
1021}
1022
1023/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1024static void tul_append_done_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1025{
1026
1027#if DEBUG_QUEUE
1028 printk("append done SCB %lx; ", (ULONG) scbp);
1029#endif
1030
1031 scbp->SCB_Status = SCB_DONE;
1032 scbp->SCB_NxtScb = NULL;
1033 if (pCurHcb->HCS_LastDone != NULL) {
1034 pCurHcb->HCS_LastDone->SCB_NxtScb = scbp;
1035 pCurHcb->HCS_LastDone = scbp;
1036 } else {
1037 pCurHcb->HCS_FirstDone = scbp;
1038 pCurHcb->HCS_LastDone = scbp;
1039 }
1040}
1041
1042/***************************************************************************/
1043SCB *tul_find_done_scb(HCS * pCurHcb)
1044{
1045 SCB *pTmpScb;
1046
1047
1048 if ((pTmpScb = pCurHcb->HCS_FirstDone) != NULL) {
1049 if ((pCurHcb->HCS_FirstDone = pTmpScb->SCB_NxtScb) == NULL)
1050 pCurHcb->HCS_LastDone = NULL;
1051 pTmpScb->SCB_NxtScb = NULL;
1052 }
1053#if DEBUG_QUEUE
1054 printk("find done SCB %lx; ", (ULONG) pTmpScb);
1055#endif
1056 return (pTmpScb);
1057}
1058
1059/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1060static int tul_abort_srb(HCS * pCurHcb, struct scsi_cmnd *srbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1061{
1062 ULONG flags;
1063 SCB *pTmpScb, *pPrevScb;
1064
1065 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1066
1067 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1068 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1069 /* disable Jasmin SCSI Int */
1070
1071 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1072
1073 tulip_main(pCurHcb);
1074
1075 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1076
1077 pCurHcb->HCS_Semaph = 1;
1078 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1079
1080 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1081
1082 return SCSI_ABORT_SNOOZE;
1083 }
1084 pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend; /* Check Pend queue */
1085 while (pTmpScb != NULL) {
1086 /* 07/27/98 */
1087 if (pTmpScb->SCB_Srb == srbp) {
1088 if (pTmpScb == pCurHcb->HCS_ActScb) {
1089 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1090 return SCSI_ABORT_BUSY;
1091 } else if (pTmpScb == pCurHcb->HCS_FirstPend) {
1092 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
1093 pCurHcb->HCS_LastPend = NULL;
1094 } else {
1095 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1096 if (pTmpScb == pCurHcb->HCS_LastPend)
1097 pCurHcb->HCS_LastPend = pPrevScb;
1098 }
1099 pTmpScb->SCB_HaStat = HOST_ABORTED;
1100 pTmpScb->SCB_Flags |= SCF_DONE;
1101 if (pTmpScb->SCB_Flags & SCF_POST)
1102 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1103 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1104 return SCSI_ABORT_SUCCESS;
1105 }
1106 pPrevScb = pTmpScb;
1107 pTmpScb = pTmpScb->SCB_NxtScb;
1108 }
1109
1110 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
1111 while (pTmpScb != NULL) {
1112
1113 if (pTmpScb->SCB_Srb == srbp) {
1114
1115 if (pTmpScb == pCurHcb->HCS_ActScb) {
1116 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1117 return SCSI_ABORT_BUSY;
1118 } else if (pTmpScb->SCB_TagMsg == 0) {
1119 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1120 return SCSI_ABORT_BUSY;
1121 } else {
1122 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
1123 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
1124 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
1125 pCurHcb->HCS_LastBusy = NULL;
1126 } else {
1127 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1128 if (pTmpScb == pCurHcb->HCS_LastBusy)
1129 pCurHcb->HCS_LastBusy = pPrevScb;
1130 }
1131 pTmpScb->SCB_NxtScb = NULL;
1132
1133
1134 pTmpScb->SCB_HaStat = HOST_ABORTED;
1135 pTmpScb->SCB_Flags |= SCF_DONE;
1136 if (pTmpScb->SCB_Flags & SCF_POST)
1137 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1138 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1139 return SCSI_ABORT_SUCCESS;
1140 }
1141 }
1142 pPrevScb = pTmpScb;
1143 pTmpScb = pTmpScb->SCB_NxtScb;
1144 }
1145 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1146 return (SCSI_ABORT_NOT_RUNNING);
1147}
1148
1149/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1150static int tul_bad_seq(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1151{
1152 SCB *pCurScb;
1153
1154 printk("tul_bad_seg c=%d\n", pCurHcb->HCS_Index);
1155
1156 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
1157 tul_unlink_busy_scb(pCurHcb, pCurScb);
1158 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1159 pCurScb->SCB_TaStat = 0;
1160 tul_append_done_scb(pCurHcb, pCurScb);
1161 }
1162 tul_stop_bm(pCurHcb);
1163
1164 tul_reset_scsi(pCurHcb, 8); /* 7/29/98 */
1165
1166 return (tul_post_scsi_rst(pCurHcb));
1167}
1168
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1169#if 0
1170
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1171/************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1172static int tul_device_reset(HCS * pCurHcb, struct scsi_cmnd *pSrb,
1173 unsigned int target, unsigned int ResetFlags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1174{
1175 ULONG flags;
1176 SCB *pScb;
1177 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1178
1179 if (ResetFlags & SCSI_RESET_ASYNCHRONOUS) {
1180
1181 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1182 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1183 /* disable Jasmin SCSI Int */
1184
1185 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1186
1187 tulip_main(pCurHcb);
1188
1189 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1190
1191 pCurHcb->HCS_Semaph = 1;
1192 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1193
1194 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1195
1196 return SCSI_RESET_SNOOZE;
1197 }
1198 pScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
1199 while (pScb != NULL) {
1200 if (pScb->SCB_Srb == pSrb)
1201 break;
1202 pScb = pScb->SCB_NxtScb;
1203 }
1204 if (pScb == NULL) {
1205 printk("Unable to Reset - No SCB Found\n");
1206
1207 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1208 return SCSI_RESET_NOT_RUNNING;
1209 }
1210 }
1211 if ((pScb = tul_alloc_scb(pCurHcb)) == NULL) {
1212 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1213 return SCSI_RESET_NOT_RUNNING;
1214 }
1215 pScb->SCB_Opcode = BusDevRst;
1216 pScb->SCB_Flags = SCF_POST;
1217 pScb->SCB_Target = target;
1218 pScb->SCB_Mode = 0;
1219
1220 pScb->SCB_Srb = NULL;
1221 if (ResetFlags & SCSI_RESET_SYNCHRONOUS) {
1222 pScb->SCB_Srb = pSrb;
1223 }
1224 tul_push_pend_scb(pCurHcb, pScb); /* push this SCB to Pending queue */
1225
1226 if (pCurHcb->HCS_Semaph == 1) {
1227 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1228 /* disable Jasmin SCSI Int */
1229 pCurHcb->HCS_Semaph = 0;
1230
1231 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1232
1233 tulip_main(pCurHcb);
1234
1235 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1236
1237 pCurHcb->HCS_Semaph = 1;
1238 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1239 }
1240 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1241 return SCSI_RESET_PENDING;
1242}
1243
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1244static int tul_reset_scsi_bus(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1245{
1246 ULONG flags;
1247
1248 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1249 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1250 pCurHcb->HCS_Semaph = 0;
1251
1252 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1253
1254 tul_stop_bm(pCurHcb);
1255
1256 tul_reset_scsi(pCurHcb, 2); /* 7/29/98 */
1257
1258 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1259 tul_post_scsi_rst(pCurHcb);
1260
1261 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1262
1263 tulip_main(pCurHcb);
1264
1265 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1266
1267 pCurHcb->HCS_Semaph = 1;
1268 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1269 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1270 return (SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET);
1271}
1272
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1273#endif /* 0 */
1274
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1275/************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1276static void tul_exec_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1277{
1278 ULONG flags;
1279
1280 pCurScb->SCB_Mode = 0;
1281
1282 pCurScb->SCB_SGIdx = 0;
1283 pCurScb->SCB_SGMax = pCurScb->SCB_SGLen;
1284
1285 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1286
1287 tul_append_pend_scb(pCurHcb, pCurScb); /* Append this SCB to Pending queue */
1288
1289/* VVVVV 07/21/98 */
1290 if (pCurHcb->HCS_Semaph == 1) {
1291 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1292 /* disable Jasmin SCSI Int */
1293 pCurHcb->HCS_Semaph = 0;
1294
1295 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1296
1297 tulip_main(pCurHcb);
1298
1299 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1300
1301 pCurHcb->HCS_Semaph = 1;
1302 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1303 }
1304 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1305 return;
1306}
1307
1308/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1309static int tul_isr(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1310{
1311 /* Enter critical section */
1312
1313 if (TUL_RD(pCurHcb->HCS_Base, TUL_Int) & TSS_INT_PENDING) {
1314 if (pCurHcb->HCS_Semaph == 1) {
1315 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1316 /* Disable Tulip SCSI Int */
1317 pCurHcb->HCS_Semaph = 0;
1318
1319 tulip_main(pCurHcb);
1320
1321 pCurHcb->HCS_Semaph = 1;
1322 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1323 return (1);
1324 }
1325 }
1326 return (0);
1327}
1328
1329/***************************************************************************/
1330int tulip_main(HCS * pCurHcb)
1331{
1332 SCB *pCurScb;
1333
1334 for (;;) {
1335
1336 tulip_scsi(pCurHcb); /* Call tulip_scsi */
1337
1338 while ((pCurScb = tul_find_done_scb(pCurHcb)) != NULL) { /* find done entry */
1339 if (pCurScb->SCB_TaStat == INI_QUEUE_FULL) {
1340 pCurHcb->HCS_MaxTags[pCurScb->SCB_Target] =
1341 pCurHcb->HCS_ActTags[pCurScb->SCB_Target] - 1;
1342 pCurScb->SCB_TaStat = 0;
1343 tul_append_pend_scb(pCurHcb, pCurScb);
1344 continue;
1345 }
1346 if (!(pCurScb->SCB_Mode & SCM_RSENS)) { /* not in auto req. sense mode */
1347 if (pCurScb->SCB_TaStat == 2) {
1348
1349 /* clr sync. nego flag */
1350
1351 if (pCurScb->SCB_Flags & SCF_SENSE) {
1352 BYTE len;
1353 len = pCurScb->SCB_SenseLen;
1354 if (len == 0)
1355 len = 1;
1356 pCurScb->SCB_BufLen = pCurScb->SCB_SenseLen;
1357 pCurScb->SCB_BufPtr = pCurScb->SCB_SensePtr;
1358 pCurScb->SCB_Flags &= ~(SCF_SG | SCF_DIR); /* for xfer_data_in */
1359/* pCurScb->SCB_Flags |= SCF_NO_DCHK; */
1360 /* so, we won't report worng direction in xfer_data_in,
1361 and won't report HOST_DO_DU in state_6 */
1362 pCurScb->SCB_Mode = SCM_RSENS;
1363 pCurScb->SCB_Ident &= 0xBF; /* Disable Disconnect */
1364 pCurScb->SCB_TagMsg = 0;
1365 pCurScb->SCB_TaStat = 0;
1366 pCurScb->SCB_CDBLen = 6;
1367 pCurScb->SCB_CDB[0] = SCSICMD_RequestSense;
1368 pCurScb->SCB_CDB[1] = 0;
1369 pCurScb->SCB_CDB[2] = 0;
1370 pCurScb->SCB_CDB[3] = 0;
1371 pCurScb->SCB_CDB[4] = len;
1372 pCurScb->SCB_CDB[5] = 0;
1373 tul_push_pend_scb(pCurHcb, pCurScb);
1374 break;
1375 }
1376 }
1377 } else { /* in request sense mode */
1378
1379 if (pCurScb->SCB_TaStat == 2) { /* check contition status again after sending
1380 requset sense cmd 0x3 */
1381 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1382 }
1383 pCurScb->SCB_TaStat = 2;
1384 }
1385 pCurScb->SCB_Flags |= SCF_DONE;
1386 if (pCurScb->SCB_Flags & SCF_POST) {
1387 (*pCurScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pCurScb);
1388 }
1389 } /* while */
1390
1391 /* find_active: */
1392 if (TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0) & TSS_INT_PENDING)
1393 continue;
1394
1395 if (pCurHcb->HCS_ActScb) { /* return to OS and wait for xfer_done_ISR/Selected_ISR */
1396 return 1; /* return to OS, enable interrupt */
1397 }
1398 /* Check pending SCB */
1399 if (tul_find_first_pend_scb(pCurHcb) == NULL) {
1400 return 1; /* return to OS, enable interrupt */
1401 }
1402 } /* End of for loop */
1403 /* statement won't reach here */
1404}
1405
1406
1407
1408
1409/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
1410/***************************************************************************/
1411/***************************************************************************/
1412/***************************************************************************/
1413/***************************************************************************/
1414
1415/***************************************************************************/
1416void tulip_scsi(HCS * pCurHcb)
1417{
1418 SCB *pCurScb;
1419 TCS *pCurTcb;
1420
1421 /* make sure to service interrupt asap */
1422
1423 if ((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING) {
1424
1425 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
1426 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
1427 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
1428 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* SCSI bus reset detected */
1429 int_tul_scsi_rst(pCurHcb);
1430 return;
1431 }
1432 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if selected/reselected interrupt */
1433 if (int_tul_resel(pCurHcb) == 0)
1434 tul_next_state(pCurHcb);
1435 return;
1436 }
1437 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) {
1438 int_tul_busfree(pCurHcb);
1439 return;
1440 }
1441 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
1442 int_tul_busfree(pCurHcb); /* unexpected bus free or sel timeout */
1443 return;
1444 }
1445 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) { /* func complete or Bus service */
1446 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL)
1447 tul_next_state(pCurHcb);
1448 return;
1449 }
1450 }
1451 if (pCurHcb->HCS_ActScb != NULL)
1452 return;
1453
1454 if ((pCurScb = tul_find_first_pend_scb(pCurHcb)) == NULL)
1455 return;
1456
1457 /* program HBA's SCSI ID & target SCSI ID */
1458 TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId,
1459 (pCurHcb->HCS_SCSI_ID << 4) | (pCurScb->SCB_Target & 0x0F));
1460 if (pCurScb->SCB_Opcode == ExecSCSI) {
1461 pCurTcb = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
1462
1463 if (pCurScb->SCB_TagMsg)
1464 pCurTcb->TCS_DrvFlags |= TCF_DRV_EN_TAG;
1465 else
1466 pCurTcb->TCS_DrvFlags &= ~TCF_DRV_EN_TAG;
1467
1468 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
1469 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { /* do wdtr negotiation */
1470 tul_select_atn_stop(pCurHcb, pCurScb);
1471 } else {
1472 if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync negotiation */
1473 tul_select_atn_stop(pCurHcb, pCurScb);
1474 } else {
1475 if (pCurScb->SCB_TagMsg)
1476 tul_select_atn3(pCurHcb, pCurScb);
1477 else
1478 tul_select_atn(pCurHcb, pCurScb);
1479 }
1480 }
1481 if (pCurScb->SCB_Flags & SCF_POLL) {
1482 while (wait_tulip(pCurHcb) != -1) {
1483 if (tul_next_state(pCurHcb) == -1)
1484 break;
1485 }
1486 }
1487 } else if (pCurScb->SCB_Opcode == BusDevRst) {
1488 tul_select_atn_stop(pCurHcb, pCurScb);
1489 pCurScb->SCB_NxtStat = 8;
1490 if (pCurScb->SCB_Flags & SCF_POLL) {
1491 while (wait_tulip(pCurHcb) != -1) {
1492 if (tul_next_state(pCurHcb) == -1)
1493 break;
1494 }
1495 }
1496 } else if (pCurScb->SCB_Opcode == AbortCmd) {
1497 if (tul_abort_srb(pCurHcb, pCurScb->SCB_Srb) != 0) {
1498
1499
1500 tul_unlink_pend_scb(pCurHcb, pCurScb);
1501
1502 tul_release_scb(pCurHcb, pCurScb);
1503 } else {
1504 pCurScb->SCB_Opcode = BusDevRst;
1505 tul_select_atn_stop(pCurHcb, pCurScb);
1506 pCurScb->SCB_NxtStat = 8;
1507 }
1508
1509/* 08/03/98 */
1510 } else {
1511 tul_unlink_pend_scb(pCurHcb, pCurScb);
1512 pCurScb->SCB_HaStat = 0x16; /* bad command */
1513 tul_append_done_scb(pCurHcb, pCurScb);
1514 }
1515 return;
1516}
1517
1518
1519/***************************************************************************/
1520int tul_next_state(HCS * pCurHcb)
1521{
1522 int next;
1523
1524 next = pCurHcb->HCS_ActScb->SCB_NxtStat;
1525 for (;;) {
1526 switch (next) {
1527 case 1:
1528 next = tul_state_1(pCurHcb);
1529 break;
1530 case 2:
1531 next = tul_state_2(pCurHcb);
1532 break;
1533 case 3:
1534 next = tul_state_3(pCurHcb);
1535 break;
1536 case 4:
1537 next = tul_state_4(pCurHcb);
1538 break;
1539 case 5:
1540 next = tul_state_5(pCurHcb);
1541 break;
1542 case 6:
1543 next = tul_state_6(pCurHcb);
1544 break;
1545 case 7:
1546 next = tul_state_7(pCurHcb);
1547 break;
1548 case 8:
1549 return (tul_bus_device_reset(pCurHcb));
1550 default:
1551 return (tul_bad_seq(pCurHcb));
1552 }
1553 if (next <= 0)
1554 return next;
1555 }
1556}
1557
1558
1559/***************************************************************************/
1560/* sTate after selection with attention & stop */
1561int tul_state_1(HCS * pCurHcb)
1562{
1563 SCB *pCurScb = pCurHcb->HCS_ActScb;
1564 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1565#if DEBUG_STATE
1566 printk("-s1-");
1567#endif
1568
1569 tul_unlink_pend_scb(pCurHcb, pCurScb);
1570 tul_append_busy_scb(pCurHcb, pCurScb);
1571
1572 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1573 /* ATN on */
1574 if (pCurHcb->HCS_Phase == MSG_OUT) {
1575
1576 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, (TSC_EN_BUS_IN | TSC_HW_RESELECT));
1577
1578 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
1579
1580 if (pCurScb->SCB_TagMsg) {
1581 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
1582 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
1583 }
1584 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1585
1586 pCurTcb->TCS_Flags |= TCF_WDTR_DONE;
1587
1588 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1589 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2); /* Extended msg length */
1590 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* Sync request */
1591 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* Start from 16 bits */
1592 } else if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1593
1594 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1595
1596 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1597 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* extended msg length */
1598 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */
1599 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1600 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */
1601 }
1602 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1603 if (wait_tulip(pCurHcb) == -1)
1604 return (-1);
1605 }
1606 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1607 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1608 return (3);
1609}
1610
1611
1612/***************************************************************************/
1613/* state after selection with attention */
1614/* state after selection with attention3 */
1615int tul_state_2(HCS * pCurHcb)
1616{
1617 SCB *pCurScb = pCurHcb->HCS_ActScb;
1618 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1619#if DEBUG_STATE
1620 printk("-s2-");
1621#endif
1622
1623 tul_unlink_pend_scb(pCurHcb, pCurScb);
1624 tul_append_busy_scb(pCurHcb, pCurScb);
1625
1626 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1627
1628 if (pCurHcb->HCS_JSStatus1 & TSS_CMD_PH_CMP) {
1629 return (4);
1630 }
1631 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1632 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1633 return (3);
1634}
1635
1636/***************************************************************************/
1637/* state before CDB xfer is done */
1638int tul_state_3(HCS * pCurHcb)
1639{
1640 SCB *pCurScb = pCurHcb->HCS_ActScb;
1641 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1642 int i;
1643
1644#if DEBUG_STATE
1645 printk("-s3-");
1646#endif
1647 for (;;) {
1648 switch (pCurHcb->HCS_Phase) {
1649 case CMD_OUT: /* Command out phase */
1650 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
1651 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
1652 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1653 if (wait_tulip(pCurHcb) == -1)
1654 return (-1);
1655 if (pCurHcb->HCS_Phase == CMD_OUT) {
1656 return (tul_bad_seq(pCurHcb));
1657 }
1658 return (4);
1659
1660 case MSG_IN: /* Message in phase */
1661 pCurScb->SCB_NxtStat = 3;
1662 if (tul_msgin(pCurHcb) == -1)
1663 return (-1);
1664 break;
1665
1666 case STATUS_IN: /* Status phase */
1667 if (tul_status_msg(pCurHcb) == -1)
1668 return (-1);
1669 break;
1670
1671 case MSG_OUT: /* Message out phase */
1672 if (pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
1673
1674 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1675 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1676 if (wait_tulip(pCurHcb) == -1)
1677 return (-1);
1678
1679 } else {
1680 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1681
1682 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1683 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* ext. msg len */
1684 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */
1685 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1686 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */
1687 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1688 if (wait_tulip(pCurHcb) == -1)
1689 return (-1);
1690 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1691 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7));
1692
1693 }
1694 break;
1695
1696 default:
1697 return (tul_bad_seq(pCurHcb));
1698 }
1699 }
1700}
1701
1702
1703/***************************************************************************/
1704int tul_state_4(HCS * pCurHcb)
1705{
1706 SCB *pCurScb = pCurHcb->HCS_ActScb;
1707
1708#if DEBUG_STATE
1709 printk("-s4-");
1710#endif
1711 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_NO_XF) {
1712 return (6); /* Go to state 6 */
1713 }
1714 for (;;) {
1715 if (pCurScb->SCB_BufLen == 0)
1716 return (6); /* Go to state 6 */
1717
1718 switch (pCurHcb->HCS_Phase) {
1719
1720 case STATUS_IN: /* Status phase */
1721 if ((pCurScb->SCB_Flags & SCF_DIR) != 0) { /* if direction bit set then report data underrun */
1722 pCurScb->SCB_HaStat = HOST_DO_DU;
1723 }
1724 if ((tul_status_msg(pCurHcb)) == -1)
1725 return (-1);
1726 break;
1727
1728 case MSG_IN: /* Message in phase */
1729 pCurScb->SCB_NxtStat = 0x4;
1730 if (tul_msgin(pCurHcb) == -1)
1731 return (-1);
1732 break;
1733
1734 case MSG_OUT: /* Message out phase */
1735 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1736 pCurScb->SCB_BufLen = 0;
1737 pCurScb->SCB_HaStat = HOST_DO_DU;
1738 if (tul_msgout_ide(pCurHcb) == -1)
1739 return (-1);
1740 return (6); /* Go to state 6 */
1741 } else {
1742 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1743 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1744 if (wait_tulip(pCurHcb) == -1)
1745 return (-1);
1746 }
1747 break;
1748
1749 case DATA_IN: /* Data in phase */
1750 return (tul_xfer_data_in(pCurHcb));
1751
1752 case DATA_OUT: /* Data out phase */
1753 return (tul_xfer_data_out(pCurHcb));
1754
1755 default:
1756 return (tul_bad_seq(pCurHcb));
1757 }
1758 }
1759}
1760
1761
1762/***************************************************************************/
1763/* state after dma xfer done or phase change before xfer done */
1764int tul_state_5(HCS * pCurHcb)
1765{
1766 SCB *pCurScb = pCurHcb->HCS_ActScb;
1767 long cnt, xcnt; /* cannot use unsigned !! code: if (xcnt < 0) */
1768
1769#if DEBUG_STATE
1770 printk("-s5-");
1771#endif
1772/*------ get remaining count -------*/
1773
1774 cnt = TUL_RDLONG(pCurHcb->HCS_Base, TUL_SCnt0) & 0x0FFFFFF;
1775
1776 if (TUL_RD(pCurHcb->HCS_Base, TUL_XCmd) & 0x20) {
1777 /* ----------------------- DATA_IN ----------------------------- */
1778 /* check scsi parity error */
1779 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1780 pCurScb->SCB_HaStat = HOST_DO_DU;
1781 }
1782 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */
1783 /* tell Hardware scsi xfer has been terminated */
1784 TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, TUL_RD(pCurHcb->HCS_Base, TUL_XCtrl) | 0x80);
1785 /* wait until DMA xfer not pending */
1786 while (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND);
1787 }
1788 } else {
1789/*-------- DATA OUT -----------*/
1790 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0) {
1791 if (pCurHcb->HCS_ActTcs->TCS_JS_Period & TSC_WIDE_SCSI)
1792 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F) << 1;
1793 else
1794 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F);
1795 }
1796 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
1797 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT);
1798 /* wait Abort DMA xfer done */
1799 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
1800 }
1801 if ((cnt == 1) && (pCurHcb->HCS_Phase == DATA_OUT)) {
1802 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1803 if (wait_tulip(pCurHcb) == -1) {
1804 return (-1);
1805 }
1806 cnt = 0;
1807 } else {
1808 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0)
1809 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1810 }
1811 }
1812
1813 if (cnt == 0) {
1814 pCurScb->SCB_BufLen = 0;
1815 return (6); /* Go to state 6 */
1816 }
1817 /* Update active data pointer */
1818 xcnt = (long) pCurScb->SCB_BufLen - cnt; /* xcnt== bytes already xferred */
1819 pCurScb->SCB_BufLen = (U32) cnt; /* cnt == bytes left to be xferred */
1820 if (pCurScb->SCB_Flags & SCF_SG) {
1821 register SG *sgp;
1822 ULONG i;
1823
1824 sgp = &pCurScb->SCB_SGList[pCurScb->SCB_SGIdx];
1825 for (i = pCurScb->SCB_SGIdx; i < pCurScb->SCB_SGMax; sgp++, i++) {
1826 xcnt -= (long) sgp->SG_Len;
1827 if (xcnt < 0) { /* this sgp xfer half done */
1828 xcnt += (long) sgp->SG_Len; /* xcnt == bytes xferred in this sgp */
1829 sgp->SG_Ptr += (U32) xcnt; /* new ptr to be xfer */
1830 sgp->SG_Len -= (U32) xcnt; /* new len to be xfer */
1831 pCurScb->SCB_BufPtr += ((U32) (i - pCurScb->SCB_SGIdx) << 3);
1832 /* new SG table ptr */
1833 pCurScb->SCB_SGLen = (BYTE) (pCurScb->SCB_SGMax - i);
1834 /* new SG table len */
1835 pCurScb->SCB_SGIdx = (WORD) i;
1836 /* for next disc and come in this loop */
1837 return (4); /* Go to state 4 */
1838 }
1839 /* else (xcnt >= 0 , i.e. this sgp already xferred */
1840 } /* for */
1841 return (6); /* Go to state 6 */
1842 } else {
1843 pCurScb->SCB_BufPtr += (U32) xcnt;
1844 }
1845 return (4); /* Go to state 4 */
1846}
1847
1848/***************************************************************************/
1849/* state after Data phase */
1850int tul_state_6(HCS * pCurHcb)
1851{
1852 SCB *pCurScb = pCurHcb->HCS_ActScb;
1853
1854#if DEBUG_STATE
1855 printk("-s6-");
1856#endif
1857 for (;;) {
1858 switch (pCurHcb->HCS_Phase) {
1859 case STATUS_IN: /* Status phase */
1860 if ((tul_status_msg(pCurHcb)) == -1)
1861 return (-1);
1862 break;
1863
1864 case MSG_IN: /* Message in phase */
1865 pCurScb->SCB_NxtStat = 6;
1866 if ((tul_msgin(pCurHcb)) == -1)
1867 return (-1);
1868 break;
1869
1870 case MSG_OUT: /* Message out phase */
1871 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1872 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1873 if (wait_tulip(pCurHcb) == -1)
1874 return (-1);
1875 break;
1876
1877 case DATA_IN: /* Data in phase */
1878 return (tul_xpad_in(pCurHcb));
1879
1880 case DATA_OUT: /* Data out phase */
1881 return (tul_xpad_out(pCurHcb));
1882
1883 default:
1884 return (tul_bad_seq(pCurHcb));
1885 }
1886 }
1887}
1888
1889/***************************************************************************/
1890int tul_state_7(HCS * pCurHcb)
1891{
1892 int cnt, i;
1893
1894#if DEBUG_STATE
1895 printk("-s7-");
1896#endif
1897 /* flush SCSI FIFO */
1898 cnt = TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F;
1899 if (cnt) {
1900 for (i = 0; i < cnt; i++)
1901 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1902 }
1903 switch (pCurHcb->HCS_Phase) {
1904 case DATA_IN: /* Data in phase */
1905 case DATA_OUT: /* Data out phase */
1906 return (tul_bad_seq(pCurHcb));
1907 default:
1908 return (6); /* Go to state 6 */
1909 }
1910}
1911
1912/***************************************************************************/
1913int tul_xfer_data_in(HCS * pCurHcb)
1914{
1915 SCB *pCurScb = pCurHcb->HCS_ActScb;
1916
1917 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DOUT) {
1918 return (6); /* wrong direction */
1919 }
1920 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1921
1922 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_IN); /* 7/25/95 */
1923
1924 if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */
1925 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1926 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1927 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_IN);
1928 } else {
1929 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1930 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1931 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_IN);
1932 }
1933 pCurScb->SCB_NxtStat = 0x5;
1934 return (0); /* return to OS, wait xfer done , let jas_isr come in */
1935}
1936
1937
1938/***************************************************************************/
1939int tul_xfer_data_out(HCS * pCurHcb)
1940{
1941 SCB *pCurScb = pCurHcb->HCS_ActScb;
1942
1943 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DIN) {
1944 return (6); /* wrong direction */
1945 }
1946 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1947 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_OUT);
1948
1949 if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */
1950 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1951 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1952 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_OUT);
1953 } else {
1954 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1955 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1956 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_OUT);
1957 }
1958
1959 pCurScb->SCB_NxtStat = 0x5;
1960 return (0); /* return to OS, wait xfer done , let jas_isr come in */
1961}
1962
1963
1964/***************************************************************************/
1965int tul_xpad_in(HCS * pCurHcb)
1966{
1967 SCB *pCurScb = pCurHcb->HCS_ActScb;
1968 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1969
1970 if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1971 pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */
1972 }
1973 for (;;) {
1974 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
1975 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
1976 else
1977 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
1978
1979 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
1980 if ((wait_tulip(pCurHcb)) == -1) {
1981 return (-1);
1982 }
1983 if (pCurHcb->HCS_Phase != DATA_IN) {
1984 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1985 return (6);
1986 }
1987 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1988 }
1989}
1990
1991int tul_xpad_out(HCS * pCurHcb)
1992{
1993 SCB *pCurScb = pCurHcb->HCS_ActScb;
1994 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1995
1996 if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1997 pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */
1998 }
1999 for (;;) {
2000 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
2001 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
2002 else
2003 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2004
2005 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0);
2006 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2007 if ((wait_tulip(pCurHcb)) == -1) {
2008 return (-1);
2009 }
2010 if (pCurHcb->HCS_Phase != DATA_OUT) { /* Disable wide CPU to allow read 16 bits */
2011 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
2012 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2013 return (6);
2014 }
2015 }
2016}
2017
2018
2019/***************************************************************************/
2020int tul_status_msg(HCS * pCurHcb)
2021{ /* status & MSG_IN */
2022 SCB *pCurScb = pCurHcb->HCS_ActScb;
2023 BYTE msg;
2024
2025 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_CMD_COMP);
2026 if ((wait_tulip(pCurHcb)) == -1) {
2027 return (-1);
2028 }
2029 /* get status */
2030 pCurScb->SCB_TaStat = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2031
2032 if (pCurHcb->HCS_Phase == MSG_OUT) {
2033 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
2034 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2035 } else {
2036 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);
2037 }
2038 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2039 return (wait_tulip(pCurHcb));
2040 }
2041 if (pCurHcb->HCS_Phase == MSG_IN) {
2042 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2043 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { /* Parity error */
2044 if ((tul_msgin_accept(pCurHcb)) == -1)
2045 return (-1);
2046 if (pCurHcb->HCS_Phase != MSG_OUT)
2047 return (tul_bad_seq(pCurHcb));
2048 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2049 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2050 return (wait_tulip(pCurHcb));
2051 }
2052 if (msg == 0) { /* Command complete */
2053
2054 if ((pCurScb->SCB_TaStat & 0x18) == 0x10) { /* No link support */
2055 return (tul_bad_seq(pCurHcb));
2056 }
2057 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2058 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2059 return tul_wait_done_disc(pCurHcb);
2060
2061 }
2062 if ((msg == MSG_LINK_COMP) || (msg == MSG_LINK_FLAG)) {
2063 if ((pCurScb->SCB_TaStat & 0x18) == 0x10)
2064 return (tul_msgin_accept(pCurHcb));
2065 }
2066 }
2067 return (tul_bad_seq(pCurHcb));
2068}
2069
2070
2071/***************************************************************************/
2072/* scsi bus free */
2073int int_tul_busfree(HCS * pCurHcb)
2074{
2075 SCB *pCurScb = pCurHcb->HCS_ActScb;
2076
2077 if (pCurScb != NULL) {
2078 if (pCurScb->SCB_Status & SCB_SELECT) { /* selection timeout */
2079 tul_unlink_pend_scb(pCurHcb, pCurScb);
2080 pCurScb->SCB_HaStat = HOST_SEL_TOUT;
2081 tul_append_done_scb(pCurHcb, pCurScb);
2082 } else { /* Unexpected bus free */
2083 tul_unlink_busy_scb(pCurHcb, pCurScb);
2084 pCurScb->SCB_HaStat = HOST_BUS_FREE;
2085 tul_append_done_scb(pCurHcb, pCurScb);
2086 }
2087 pCurHcb->HCS_ActScb = NULL;
2088 pCurHcb->HCS_ActTcs = NULL;
2089 }
2090 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2091 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2092 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2093 return (-1);
2094}
2095
2096
2097/***************************************************************************/
2098/* scsi bus reset */
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]2099static int int_tul_scsi_rst(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2100{
2101 SCB *pCurScb;
2102 int i;
2103
2104 /* if DMA xfer is pending, abort DMA xfer */
2105 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & 0x01) {
2106 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
2107 /* wait Abort DMA xfer done */
2108 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & 0x04) == 0);
2109 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2110 }
2111 /* Abort all active & disconnected scb */
2112 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2113 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2114 tul_append_done_scb(pCurHcb, pCurScb);
2115 }
2116 pCurHcb->HCS_ActScb = NULL;
2117 pCurHcb->HCS_ActTcs = NULL;
2118
2119 /* clr sync nego. done flag */
2120 for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2121 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2122 }
2123 return (-1);
2124}
2125
2126
2127/***************************************************************************/
2128/* scsi reselection */
2129int int_tul_resel(HCS * pCurHcb)
2130{
2131 SCB *pCurScb;
2132 TCS *pCurTcb;
2133 BYTE tag, msg = 0;
2134 BYTE tar, lun;
2135
2136 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
2137 if (pCurScb->SCB_Status & SCB_SELECT) { /* if waiting for selection complete */
2138 pCurScb->SCB_Status &= ~SCB_SELECT;
2139 }
2140 pCurHcb->HCS_ActScb = NULL;
2141 }
2142 /* --------- get target id---------------------- */
2143 tar = TUL_RD(pCurHcb->HCS_Base, TUL_SBusId);
2144 /* ------ get LUN from Identify message----------- */
2145 lun = TUL_RD(pCurHcb->HCS_Base, TUL_SIdent) & 0x0F;
2146 /* 07/22/98 from 0x1F -> 0x0F */
2147 pCurTcb = &pCurHcb->HCS_Tcs[tar];
2148 pCurHcb->HCS_ActTcs = pCurTcb;
2149 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
2150 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
2151
2152
2153 /* ------------- tag queueing ? ------------------- */
2154 if (pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG) {
2155 if ((tul_msgin_accept(pCurHcb)) == -1)
2156 return (-1);
2157 if (pCurHcb->HCS_Phase != MSG_IN)
2158 goto no_tag;
2159 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2160 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2161 if ((wait_tulip(pCurHcb)) == -1)
2162 return (-1);
2163 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag Message */
2164
2165 if ((msg < MSG_STAG) || (msg > MSG_OTAG)) /* Is simple Tag */
2166 goto no_tag;
2167
2168 if ((tul_msgin_accept(pCurHcb)) == -1)
2169 return (-1);
2170
2171 if (pCurHcb->HCS_Phase != MSG_IN)
2172 goto no_tag;
2173
2174 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2175 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2176 if ((wait_tulip(pCurHcb)) == -1)
2177 return (-1);
2178 tag = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag ID */
2179 pCurScb = pCurHcb->HCS_Scb + tag;
2180 if ((pCurScb->SCB_Target != tar) || (pCurScb->SCB_Lun != lun)) {
2181 return tul_msgout_abort_tag(pCurHcb);
2182 }
2183 if (pCurScb->SCB_Status != SCB_BUSY) { /* 03/24/95 */
2184 return tul_msgout_abort_tag(pCurHcb);
2185 }
2186 pCurHcb->HCS_ActScb = pCurScb;
2187 if ((tul_msgin_accept(pCurHcb)) == -1)
2188 return (-1);
2189 } else { /* No tag */
2190 no_tag:
2191 if ((pCurScb = tul_find_busy_scb(pCurHcb, tar | (lun << 8))) == NULL) {
2192 return tul_msgout_abort_targ(pCurHcb);
2193 }
2194 pCurHcb->HCS_ActScb = pCurScb;
2195 if (!(pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG)) {
2196 if ((tul_msgin_accept(pCurHcb)) == -1)
2197 return (-1);
2198 }
2199 }
2200 return 0;
2201}
2202
2203
2204/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]2205static int int_tul_bad_seq(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2206{ /* target wrong phase */
2207 SCB *pCurScb;
2208 int i;
2209
2210 tul_reset_scsi(pCurHcb, 10);
2211
2212 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2213 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2214 tul_append_done_scb(pCurHcb, pCurScb);
2215 }
2216 for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2217 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2218 }
2219 return (-1);
2220}
2221
2222
2223/***************************************************************************/
2224int tul_msgout_abort_targ(HCS * pCurHcb)
2225{
2226
2227 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2228 if (tul_msgin_accept(pCurHcb) == -1)
2229 return (-1);
2230 if (pCurHcb->HCS_Phase != MSG_OUT)
2231 return (tul_bad_seq(pCurHcb));
2232
2233 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT);
2234 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2235
2236 return tul_wait_disc(pCurHcb);
2237}
2238
2239/***************************************************************************/
2240int tul_msgout_abort_tag(HCS * pCurHcb)
2241{
2242
2243 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2244 if (tul_msgin_accept(pCurHcb) == -1)
2245 return (-1);
2246 if (pCurHcb->HCS_Phase != MSG_OUT)
2247 return (tul_bad_seq(pCurHcb));
2248
2249 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT_TAG);
2250 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2251
2252 return tul_wait_disc(pCurHcb);
2253
2254}
2255
2256/***************************************************************************/
2257int tul_msgin(HCS * pCurHcb)
2258{
2259 TCS *pCurTcb;
2260
2261 for (;;) {
2262
2263 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2264
2265 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2266 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2267 if ((wait_tulip(pCurHcb)) == -1)
2268 return (-1);
2269
2270 switch (TUL_RD(pCurHcb->HCS_Base, TUL_SFifo)) {
2271 case MSG_DISC: /* Disconnect msg */
2272 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2273
2274 return tul_wait_disc(pCurHcb);
2275
2276 case MSG_SDP:
2277 case MSG_RESTORE:
2278 case MSG_NOP:
2279 tul_msgin_accept(pCurHcb);
2280 break;
2281
2282 case MSG_REJ: /* Clear ATN first */
2283 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal,
2284 (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
2285 pCurTcb = pCurHcb->HCS_ActTcs;
2286 if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync nego */
2287 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2288 }
2289 tul_msgin_accept(pCurHcb);
2290 break;
2291
2292 case MSG_EXTEND: /* extended msg */
2293 tul_msgin_extend(pCurHcb);
2294 break;
2295
2296 case MSG_IGNOREWIDE:
2297 tul_msgin_accept(pCurHcb);
2298 break;
2299
2300 /* get */
2301 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2302 if (wait_tulip(pCurHcb) == -1)
2303 return -1;
2304
2305 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0); /* put pad */
2306 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get IGNORE field */
2307 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get pad */
2308
2309 tul_msgin_accept(pCurHcb);
2310 break;
2311
2312 case MSG_COMP:
2313 {
2314 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2315 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2316 return tul_wait_done_disc(pCurHcb);
2317 }
2318 default:
2319 tul_msgout_reject(pCurHcb);
2320 break;
2321 }
2322 if (pCurHcb->HCS_Phase != MSG_IN)
2323 return (pCurHcb->HCS_Phase);
2324 }
2325 /* statement won't reach here */
2326}
2327
2328
2329
2330
2331/***************************************************************************/
2332int tul_msgout_reject(HCS * pCurHcb)
2333{
2334
2335 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2336
2337 if ((tul_msgin_accept(pCurHcb)) == -1)
2338 return (-1);
2339
2340 if (pCurHcb->HCS_Phase == MSG_OUT) {
2341 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_REJ); /* Msg reject */
2342 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2343 return (wait_tulip(pCurHcb));
2344 }
2345 return (pCurHcb->HCS_Phase);
2346}
2347
2348
2349
2350/***************************************************************************/
2351int tul_msgout_ide(HCS * pCurHcb)
2352{
2353 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_IDE); /* Initiator Detected Error */
2354 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2355 return (wait_tulip(pCurHcb));
2356}
2357
2358
2359/***************************************************************************/
2360int tul_msgin_extend(HCS * pCurHcb)
2361{
2362 BYTE len, idx;
2363
2364 if (tul_msgin_accept(pCurHcb) != MSG_IN)
2365 return (pCurHcb->HCS_Phase);
2366
2367 /* Get extended msg length */
2368 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2369 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2370 if (wait_tulip(pCurHcb) == -1)
2371 return (-1);
2372
2373 len = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2374 pCurHcb->HCS_Msg[0] = len;
2375 for (idx = 1; len != 0; len--) {
2376
2377 if ((tul_msgin_accept(pCurHcb)) != MSG_IN)
2378 return (pCurHcb->HCS_Phase);
2379 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2380 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2381 if (wait_tulip(pCurHcb) == -1)
2382 return (-1);
2383 pCurHcb->HCS_Msg[idx++] = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2384 }
2385 if (pCurHcb->HCS_Msg[1] == 1) { /* if it's synchronous data transfer request */
2386 if (pCurHcb->HCS_Msg[0] != 3) /* if length is not right */
2387 return (tul_msgout_reject(pCurHcb));
2388 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_SYNC_NEGO) { /* Set OFFSET=0 to do async, nego back */
2389 pCurHcb->HCS_Msg[3] = 0;
2390 } else {
2391 if ((tul_msgin_sync(pCurHcb) == 0) &&
2392 (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SYNC_DONE)) {
2393 tul_sync_done(pCurHcb);
2394 return (tul_msgin_accept(pCurHcb));
2395 }
2396 }
2397
2398 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2399 if ((tul_msgin_accept(pCurHcb)) != MSG_OUT)
2400 return (pCurHcb->HCS_Phase);
2401 /* sync msg out */
2402 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2403
2404 tul_sync_done(pCurHcb);
2405
2406 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2407 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2408 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);
2409 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2410 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[3]);
2411
2412 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2413 return (wait_tulip(pCurHcb));
2414 }
2415 if ((pCurHcb->HCS_Msg[0] != 2) || (pCurHcb->HCS_Msg[1] != 3))
2416 return (tul_msgout_reject(pCurHcb));
2417 /* if it's WIDE DATA XFER REQ */
2418 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) {
2419 pCurHcb->HCS_Msg[2] = 0;
2420 } else {
2421 if (pCurHcb->HCS_Msg[2] > 2) /* > 32 bits */
2422 return (tul_msgout_reject(pCurHcb));
2423 if (pCurHcb->HCS_Msg[2] == 2) { /* == 32 */
2424 pCurHcb->HCS_Msg[2] = 1;
2425 } else {
2426 if ((pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) == 0) {
2427 wdtr_done(pCurHcb);
2428 if ((pCurHcb->HCS_ActTcs->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2429 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2430 return (tul_msgin_accept(pCurHcb));
2431 }
2432 }
2433 }
2434 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2435
2436 if (tul_msgin_accept(pCurHcb) != MSG_OUT)
2437 return (pCurHcb->HCS_Phase);
2438 /* WDTR msg out */
2439 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2440 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2);
2441 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2442 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2443 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2444 return (wait_tulip(pCurHcb));
2445}
2446
2447/***************************************************************************/
2448int tul_msgin_sync(HCS * pCurHcb)
2449{
2450 char default_period;
2451
2452 default_period = tul_rate_tbl[pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SCSI_RATE];
2453 if (pCurHcb->HCS_Msg[3] > MAX_OFFSET) {
2454 pCurHcb->HCS_Msg[3] = MAX_OFFSET;
2455 if (pCurHcb->HCS_Msg[2] < default_period) {
2456 pCurHcb->HCS_Msg[2] = default_period;
2457 return 1;
2458 }
2459 if (pCurHcb->HCS_Msg[2] >= 59) { /* Change to async */
2460 pCurHcb->HCS_Msg[3] = 0;
2461 }
2462 return 1;
2463 }
2464 /* offset requests asynchronous transfers ? */
2465 if (pCurHcb->HCS_Msg[3] == 0) {
2466 return 0;
2467 }
2468 if (pCurHcb->HCS_Msg[2] < default_period) {
2469 pCurHcb->HCS_Msg[2] = default_period;
2470 return 1;
2471 }
2472 if (pCurHcb->HCS_Msg[2] >= 59) {
2473 pCurHcb->HCS_Msg[3] = 0;
2474 return 1;
2475 }
2476 return 0;
2477}
2478
2479
2480/***************************************************************************/
2481int wdtr_done(HCS * pCurHcb)
2482{
2483 pCurHcb->HCS_ActTcs->TCS_Flags &= ~TCF_SYNC_DONE;
2484 pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_WDTR_DONE;
2485
2486 pCurHcb->HCS_ActTcs->TCS_JS_Period = 0;
2487 if (pCurHcb->HCS_Msg[2]) { /* if 16 bit */
2488 pCurHcb->HCS_ActTcs->TCS_JS_Period |= TSC_WIDE_SCSI;
2489 }
2490 pCurHcb->HCS_ActTcs->TCS_SConfig0 &= ~TSC_ALT_PERIOD;
2491 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2492 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2493
2494 return 1;
2495}
2496
2497/***************************************************************************/
2498int tul_sync_done(HCS * pCurHcb)
2499{
2500 int i;
2501
2502 pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_SYNC_DONE;
2503
2504 if (pCurHcb->HCS_Msg[3]) {
2505 pCurHcb->HCS_ActTcs->TCS_JS_Period |= pCurHcb->HCS_Msg[3];
2506 for (i = 0; i < 8; i++) {
2507 if (tul_rate_tbl[i] >= pCurHcb->HCS_Msg[2]) /* pick the big one */
2508 break;
2509 }
2510 pCurHcb->HCS_ActTcs->TCS_JS_Period |= (i << 4);
2511 pCurHcb->HCS_ActTcs->TCS_SConfig0 |= TSC_ALT_PERIOD;
2512 }
2513 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2514 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2515
2516 return (-1);
2517}
2518
2519
2520int tul_post_scsi_rst(HCS * pCurHcb)
2521{
2522 SCB *pCurScb;
2523 TCS *pCurTcb;
2524 int i;
2525
2526 pCurHcb->HCS_ActScb = NULL;
2527 pCurHcb->HCS_ActTcs = NULL;
2528 pCurHcb->HCS_Flags = 0;
2529
2530 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2531 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2532 tul_append_done_scb(pCurHcb, pCurScb);
2533 }
2534 /* clear sync done flag */
2535 pCurTcb = &pCurHcb->HCS_Tcs[0];
2536 for (i = 0; i < pCurHcb->HCS_MaxTar; pCurTcb++, i++) {
2537 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2538 /* Initialize the sync. xfer register values to an asyn xfer */
2539 pCurTcb->TCS_JS_Period = 0;
2540 pCurTcb->TCS_SConfig0 = pCurHcb->HCS_SConf1;
2541 pCurHcb->HCS_ActTags[0] = 0; /* 07/22/98 */
2542 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY; /* 07/22/98 */
2543 } /* for */
2544
2545 return (-1);
2546}
2547
2548/***************************************************************************/
2549void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb)
2550{
2551 pCurScb->SCB_Status |= SCB_SELECT;
2552 pCurScb->SCB_NxtStat = 0x1;
2553 pCurHcb->HCS_ActScb = pCurScb;
2554 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2555 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SELATNSTOP);
2556 return;
2557}
2558
2559
2560/***************************************************************************/
2561void tul_select_atn(HCS * pCurHcb, SCB * pCurScb)
2562{
2563 int i;
2564
2565 pCurScb->SCB_Status |= SCB_SELECT;
2566 pCurScb->SCB_NxtStat = 0x2;
2567
2568 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2569 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2570 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2571 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2572 pCurHcb->HCS_ActScb = pCurScb;
2573 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN);
2574 return;
2575}
2576
2577/***************************************************************************/
2578void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb)
2579{
2580 int i;
2581
2582 pCurScb->SCB_Status |= SCB_SELECT;
2583 pCurScb->SCB_NxtStat = 0x2;
2584
2585 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2586 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
2587 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
2588 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2589 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2590 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2591 pCurHcb->HCS_ActScb = pCurScb;
2592 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN3);
2593 return;
2594}
2595
2596/***************************************************************************/
2597/* SCSI Bus Device Reset */
2598int tul_bus_device_reset(HCS * pCurHcb)
2599{
2600 SCB *pCurScb = pCurHcb->HCS_ActScb;
2601 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
2602 SCB *pTmpScb, *pPrevScb;
2603 BYTE tar;
2604
2605 if (pCurHcb->HCS_Phase != MSG_OUT) {
2606 return (int_tul_bad_seq(pCurHcb)); /* Unexpected phase */
2607 }
2608 tul_unlink_pend_scb(pCurHcb, pCurScb);
2609 tul_release_scb(pCurHcb, pCurScb);
2610
2611
2612 tar = pCurScb->SCB_Target; /* target */
2613 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
2614 /* clr sync. nego & WDTR flags 07/22/98 */
2615
2616 /* abort all SCB with same target */
2617 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
2618 while (pTmpScb != NULL) {
2619
2620 if (pTmpScb->SCB_Target == tar) {
2621 /* unlink it */
2622 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
2623 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
2624 pCurHcb->HCS_LastBusy = NULL;
2625 } else {
2626 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
2627 if (pTmpScb == pCurHcb->HCS_LastBusy)
2628 pCurHcb->HCS_LastBusy = pPrevScb;
2629 }
2630 pTmpScb->SCB_HaStat = HOST_ABORTED;
2631 tul_append_done_scb(pCurHcb, pTmpScb);
2632 }
2633 /* Previous haven't change */
2634 else {
2635 pPrevScb = pTmpScb;
2636 }
2637 pTmpScb = pTmpScb->SCB_NxtScb;
2638 }
2639
2640 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_DEVRST);
2641 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2642
2643 return tul_wait_disc(pCurHcb);
2644
2645}
2646
2647/***************************************************************************/
2648int tul_msgin_accept(HCS * pCurHcb)
2649{
2650 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2651 return (wait_tulip(pCurHcb));
2652}
2653
2654/***************************************************************************/
2655int wait_tulip(HCS * pCurHcb)
2656{
2657
2658 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2659 & TSS_INT_PENDING));
2660
2661 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2662 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
2663 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
2664
2665 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if SCSI bus reset detected */
2666 return (int_tul_resel(pCurHcb));
2667 }
2668 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) { /* if selected/reselected timeout interrupt */
2669 return (int_tul_busfree(pCurHcb));
2670 }
2671 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2672 return (int_tul_scsi_rst(pCurHcb));
2673 }
2674 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2675 if (pCurHcb->HCS_Flags & HCF_EXPECT_DONE_DISC) {
2676 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2677 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2678 pCurHcb->HCS_ActScb->SCB_HaStat = 0;
2679 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2680 pCurHcb->HCS_ActScb = NULL;
2681 pCurHcb->HCS_ActTcs = NULL;
2682 pCurHcb->HCS_Flags &= ~HCF_EXPECT_DONE_DISC;
2683 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2684 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2685 return (-1);
2686 }
2687 if (pCurHcb->HCS_Flags & HCF_EXPECT_DISC) {
2688 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2689 pCurHcb->HCS_ActScb = NULL;
2690 pCurHcb->HCS_ActTcs = NULL;
2691 pCurHcb->HCS_Flags &= ~HCF_EXPECT_DISC;
2692 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2693 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2694 return (-1);
2695 }
2696 return (int_tul_busfree(pCurHcb));
2697 }
2698 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) {
2699 return (pCurHcb->HCS_Phase);
2700 }
2701 return (pCurHcb->HCS_Phase);
2702}
2703/***************************************************************************/
2704int tul_wait_disc(HCS * pCurHcb)
2705{
2706
2707 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2708 & TSS_INT_PENDING));
2709
2710
2711 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2712
2713 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2714 return (int_tul_scsi_rst(pCurHcb));
2715 }
2716 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2717 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2718 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2719 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2720 pCurHcb->HCS_ActScb = NULL;
2721 return (-1);
2722 }
2723 return (tul_bad_seq(pCurHcb));
2724}
2725
2726/***************************************************************************/
2727int tul_wait_done_disc(HCS * pCurHcb)
2728{
2729
2730
2731 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2732 & TSS_INT_PENDING));
2733
2734 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2735
2736
2737 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2738 return (int_tul_scsi_rst(pCurHcb));
2739 }
2740 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2741 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2742 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2743 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2744 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2745
2746 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2747 pCurHcb->HCS_ActScb = NULL;
2748 return (-1);
2749 }
2750 return (tul_bad_seq(pCurHcb));
2751}
2752
2753static irqreturn_t i91u_intr(int irqno, void *dev_id, struct pt_regs *regs)
2754{
2755 struct Scsi_Host *dev = dev_id;
2756 unsigned long flags;
2757
2758 spin_lock_irqsave(dev->host_lock, flags);
2759 tul_isr((HCS *)dev->base);
2760 spin_unlock_irqrestore(dev->host_lock, flags);
2761 return IRQ_HANDLED;
2762}
2763
2764static int tul_NewReturnNumberOfAdapters(void)
2765{
2766 struct pci_dev *pDev = NULL; /* Start from none */
2767 int iAdapters = 0;
2768 long dRegValue;
2769 WORD wBIOS;
2770 int i = 0;
2771
2772 init_i91uAdapter_table();
2773
2774 for (i = 0; i < TULSZ(i91u_pci_devices); i++)
2775 {
2776 while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) {
2777 if (pci_enable_device(pDev))
2778 continue;
2779 pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue);
2780 wBIOS = (UWORD) (dRegValue & 0xFF);
2781 if (((dRegValue & 0xFF00) >> 8) == 0xFF)
2782 dRegValue = 0;
2783 wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8));
Matthias Gehre910638a2006-03-28 01:56:48 -0800[diff] [blame]2784 if (pci_set_dma_mask(pDev, DMA_32BIT_MASK)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2785 printk(KERN_WARNING
2786 "i91u: Could not set 32 bit DMA mask\n");
2787 continue;
2788 }
2789
2790 if (Addi91u_into_Adapter_table(wBIOS,
2791 (pDev->resource[0].start),
2792 pDev->irq,
2793 pDev->bus->number,
2794 (pDev->devfn >> 3)
2795 ) == 0)
2796 iAdapters++;
2797 }
2798 }
2799
2800 return (iAdapters);
2801}
2802
2803static int i91u_detect(struct scsi_host_template * tpnt)
2804{
2805 HCS *pHCB;
2806 struct Scsi_Host *hreg;
2807 unsigned long i; /* 01/14/98 */
2808 int ok = 0, iAdapters;
2809 ULONG dBiosAdr;
2810 BYTE *pbBiosAdr;
2811
2812 /* Get total number of adapters in the motherboard */
2813 iAdapters = tul_NewReturnNumberOfAdapters();
2814 if (iAdapters == 0) /* If no tulip founded, return */
2815 return (0);
2816
2817 tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters;
2818 /* Update actually channel number */
2819 if (tul_tag_enable) { /* 1.01i */
2820 tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE;
2821 } else {
2822 tul_num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */
2823 } /* Update actually SCBs per adapter */
2824
2825 /* Get total memory needed for HCS */
2826 i = tul_num_ch * sizeof(HCS);
2827 memset((unsigned char *) &tul_hcs[0], 0, i); /* Initialize tul_hcs 0 */
2828 /* Get total memory needed for SCB */
2829
2830 for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) {
2831 i = tul_num_ch * tul_num_scb * sizeof(SCB);
2832 if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL)
2833 break;
2834 }
2835 if (tul_scb == NULL) {
2836 printk("i91u: SCB memory allocation error\n");
2837 return (0);
2838 }
2839 memset((unsigned char *) tul_scb, 0, i);
2840
2841 for (i = 0, pHCB = &tul_hcs[0]; /* Get pointer for control block */
2842 i < tul_num_ch;
2843 i++, pHCB++) {
2844 get_tulipPCIConfig(pHCB, i);
2845
2846 dBiosAdr = pHCB->HCS_BIOS;
2847 dBiosAdr = (dBiosAdr << 4);
2848
2849 pbBiosAdr = phys_to_virt(dBiosAdr);
2850
2851 init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10);
2852 request_region(pHCB->HCS_Base, 256, "i91u"); /* Register */
2853
2854 pHCB->HCS_Index = i; /* 7/29/98 */
2855 hreg = scsi_register(tpnt, sizeof(HCS));
2856 if(hreg == NULL) {
2857 release_region(pHCB->HCS_Base, 256);
2858 return 0;
2859 }
2860 hreg->io_port = pHCB->HCS_Base;
2861 hreg->n_io_port = 0xff;
2862 hreg->can_queue = tul_num_scb; /* 03/05/98 */
2863 hreg->unique_id = pHCB->HCS_Base;
2864 hreg->max_id = pHCB->HCS_MaxTar;
2865 hreg->max_lun = 32; /* 10/21/97 */
2866 hreg->irq = pHCB->HCS_Intr;
2867 hreg->this_id = pHCB->HCS_SCSI_ID; /* Assign HCS index */
2868 hreg->base = (unsigned long)pHCB;
2869 hreg->sg_tablesize = TOTAL_SG_ENTRY; /* Maximun support is 32 */
2870
2871 /* Initial tulip chip */
2872 ok = request_irq(pHCB->HCS_Intr, i91u_intr, SA_INTERRUPT | SA_SHIRQ, "i91u", hreg);
2873 if (ok < 0) {
2874 printk(KERN_WARNING "i91u: unable to request IRQ %d\n\n", pHCB->HCS_Intr);
2875 return 0;
2876 }
2877 }
2878
2879 tpnt->this_id = -1;
2880 tpnt->can_queue = 1;
2881
2882 return 1;
2883}
2884
2885static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, struct scsi_cmnd * SCpnt)
2886{ /* Create corresponding SCB */
2887 struct scatterlist *pSrbSG;
2888 SG *pSG; /* Pointer to SG list */
2889 int i;
2890 long TotalLen;
2891 dma_addr_t dma_addr;
2892
2893 pSCB->SCB_Post = i91uSCBPost; /* i91u's callback routine */
2894 pSCB->SCB_Srb = SCpnt;
2895 pSCB->SCB_Opcode = ExecSCSI;
2896 pSCB->SCB_Flags = SCF_POST; /* After SCSI done, call post routine */
2897 pSCB->SCB_Target = SCpnt->device->id;
2898 pSCB->SCB_Lun = SCpnt->device->lun;
2899 pSCB->SCB_Ident = SCpnt->device->lun | DISC_ALLOW;
2900
2901 pSCB->SCB_Flags |= SCF_SENSE; /* Turn on auto request sense */
2902 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->sense_buffer,
2903 SENSE_SIZE, DMA_FROM_DEVICE);
2904 pSCB->SCB_SensePtr = cpu_to_le32((u32)dma_addr);
2905 pSCB->SCB_SenseLen = cpu_to_le32(SENSE_SIZE);
2906 SCpnt->SCp.ptr = (char *)(unsigned long)dma_addr;
2907
2908 pSCB->SCB_CDBLen = SCpnt->cmd_len;
2909 pSCB->SCB_HaStat = 0;
2910 pSCB->SCB_TaStat = 0;
2911 memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len);
2912
2913 if (SCpnt->device->tagged_supported) { /* Tag Support */
2914 pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */
2915 } else {
2916 pSCB->SCB_TagMsg = 0; /* No tag support */
2917 }
2918 /* todo handle map_sg error */
2919 if (SCpnt->use_sg) {
2920 dma_addr = dma_map_single(&pHCB->pci_dev->dev, &pSCB->SCB_SGList[0],
2921 sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
2922 DMA_BIDIRECTIONAL);
2923 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2924 SCpnt->SCp.dma_handle = dma_addr;
2925
2926 pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
2927 pSCB->SCB_SGLen = dma_map_sg(&pHCB->pci_dev->dev, pSrbSG,
2928 SCpnt->use_sg, SCpnt->sc_data_direction);
2929
2930 pSCB->SCB_Flags |= SCF_SG; /* Turn on SG list flag */
2931 for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0]; /* 1.01g */
2932 i < pSCB->SCB_SGLen; i++, pSG++, pSrbSG++) {
2933 pSG->SG_Ptr = cpu_to_le32((u32)sg_dma_address(pSrbSG));
2934 TotalLen += pSG->SG_Len = cpu_to_le32((u32)sg_dma_len(pSrbSG));
2935 }
2936
2937 pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ?
2938 TotalLen : SCpnt->request_bufflen;
2939 } else if (SCpnt->request_bufflen) { /* Non SG */
2940 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->request_buffer,
2941 SCpnt->request_bufflen,
2942 SCpnt->sc_data_direction);
2943 SCpnt->SCp.dma_handle = dma_addr;
2944 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2945 pSCB->SCB_BufLen = cpu_to_le32((u32)SCpnt->request_bufflen);
2946 pSCB->SCB_SGLen = 0;
2947 } else {
2948 pSCB->SCB_BufLen = 0;
2949 pSCB->SCB_SGLen = 0;
2950 }
2951}
2952
2953static int i91u_queuecommand(struct scsi_cmnd *cmd,
2954 void (*done)(struct scsi_cmnd *))
2955{
2956 HCS *pHCB = (HCS *) cmd->device->host->base;
2957 register SCB *pSCB;
2958
2959 cmd->scsi_done = done;
2960
2961 pSCB = tul_alloc_scb(pHCB);
2962 if (!pSCB)
2963 return SCSI_MLQUEUE_HOST_BUSY;
2964
2965 i91uBuildSCB(pHCB, pSCB, cmd);
2966 tul_exec_scb(pHCB, pSCB);
2967 return 0;
2968}
2969
2970#if 0 /* no new EH yet */
2971/*
2972 * Abort a queued command
2973 * (commands that are on the bus can't be aborted easily)
2974 */
2975static int i91u_abort(struct scsi_cmnd * SCpnt)
2976{
2977 HCS *pHCB;
2978
2979 pHCB = (HCS *) SCpnt->device->host->base;
2980 return tul_abort_srb(pHCB, SCpnt);
2981}
2982
2983/*
2984 * Reset registers, reset a hanging bus and
2985 * kill active and disconnected commands for target w/o soft reset
2986 */
2987static int i91u_reset(struct scsi_cmnd * SCpnt, unsigned int reset_flags)
2988{ /* I need Host Control Block Information */
2989 HCS *pHCB;
2990
2991 pHCB = (HCS *) SCpnt->device->host->base;
2992
2993 if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET))
2994 return tul_reset_scsi_bus(pHCB);
2995 else
2996 return tul_device_reset(pHCB, SCpnt, SCpnt->device->id, reset_flags);
2997}
2998#endif
2999
3000static int i91u_bus_reset(struct scsi_cmnd * SCpnt)
3001{
3002 HCS *pHCB;
3003
3004 pHCB = (HCS *) SCpnt->device->host->base;
Jeff Garzik 68b3aa72005-05-28 07:56:31 -0400[diff] [blame]3005
3006 spin_lock_irq(SCpnt->device->host->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3007 tul_reset_scsi(pHCB, 0);
Jeff Garzik 68b3aa72005-05-28 07:56:31 -0400[diff] [blame]3008 spin_unlock_irq(SCpnt->device->host->host_lock);
3009
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3010 return SUCCESS;
3011}
3012
3013/*
3014 * Return the "logical geometry"
3015 */
3016static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
3017 sector_t capacity, int *info_array)
3018{
3019 HCS *pHcb; /* Point to Host adapter control block */
3020 TCS *pTcb;
3021
3022 pHcb = (HCS *) sdev->host->base;
3023 pTcb = &pHcb->HCS_Tcs[sdev->id];
3024
3025 if (pTcb->TCS_DrvHead) {
3026 info_array[0] = pTcb->TCS_DrvHead;
3027 info_array[1] = pTcb->TCS_DrvSector;
3028 info_array[2] = (unsigned long)capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector;
3029 } else {
3030 if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) {
3031 info_array[0] = 255;
3032 info_array[1] = 63;
3033 info_array[2] = (unsigned long)capacity / 255 / 63;
3034 } else {
3035 info_array[0] = 64;
3036 info_array[1] = 32;
3037 info_array[2] = (unsigned long)capacity >> 11;
3038 }
3039 }
3040
3041#if defined(DEBUG_BIOSPARAM)
3042 if (i91u_debug & debug_biosparam) {
3043 printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
3044 info_array[0], info_array[1], info_array[2]);
3045 printk("WARNING: check, if the bios geometry is correct.\n");
3046 }
3047#endif
3048
3049 return 0;
3050}
3051
3052static void i91u_unmap_cmnd(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
3053{
3054 /* auto sense buffer */
3055 if (cmnd->SCp.ptr) {
3056 dma_unmap_single(&pci_dev->dev,
3057 (dma_addr_t)((unsigned long)cmnd->SCp.ptr),
3058 SENSE_SIZE, DMA_FROM_DEVICE);
3059 cmnd->SCp.ptr = NULL;
3060 }
3061
3062 /* request buffer */
3063 if (cmnd->use_sg) {
3064 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3065 sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
3066 DMA_BIDIRECTIONAL);
3067
3068 dma_unmap_sg(&pci_dev->dev, cmnd->request_buffer,
3069 cmnd->use_sg,
3070 cmnd->sc_data_direction);
3071 } else if (cmnd->request_bufflen) {
3072 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3073 cmnd->request_bufflen,
3074 cmnd->sc_data_direction);
3075 }
3076}
3077
3078/*****************************************************************************
3079 Function name : i91uSCBPost
3080 Description : This is callback routine be called when tulip finish one
3081 SCSI command.
3082 Input : pHCB - Pointer to host adapter control block.
3083 pSCB - Pointer to SCSI control block.
3084 Output : None.
3085 Return : None.
3086*****************************************************************************/
3087static void i91uSCBPost(BYTE * pHcb, BYTE * pScb)
3088{
3089 struct scsi_cmnd *pSRB; /* Pointer to SCSI request block */
3090 HCS *pHCB;
3091 SCB *pSCB;
3092
3093 pHCB = (HCS *) pHcb;
3094 pSCB = (SCB *) pScb;
3095 if ((pSRB = pSCB->SCB_Srb) == 0) {
3096 printk("i91uSCBPost: SRB pointer is empty\n");
3097
3098 tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
3099 return;
3100 }
3101 switch (pSCB->SCB_HaStat) {
3102 case 0x0:
3103 case 0xa: /* Linked command complete without error and linked normally */
3104 case 0xb: /* Linked command complete without error interrupt generated */
3105 pSCB->SCB_HaStat = 0;
3106 break;
3107
3108 case 0x11: /* Selection time out-The initiator selection or target
3109 reselection was not complete within the SCSI Time out period */
3110 pSCB->SCB_HaStat = DID_TIME_OUT;
3111 break;
3112
3113 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
3114 phase sequence was requested by the target. The host adapter
3115 will generate a SCSI Reset Condition, notifying the host with
3116 a SCRD interrupt */
3117 pSCB->SCB_HaStat = DID_RESET;
3118 break;
3119
3120 case 0x1a: /* SCB Aborted. 07/21/98 */
3121 pSCB->SCB_HaStat = DID_ABORT;
3122 break;
3123
3124 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
3125 than was allocated by the Data Length field or the sum of the
3126 Scatter / Gather Data Length fields. */
3127 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
3128 case 0x16: /* Invalid SCB Operation Code. */
3129
3130 default:
3131 printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat);
3132 pSCB->SCB_HaStat = DID_ERROR; /* Couldn't find any better */
3133 break;
3134 }
3135
3136 pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
3137
3138 if (pSRB == NULL) {
3139 printk("pSRB is NULL\n");
3140 }
3141
3142 i91u_unmap_cmnd(pHCB->pci_dev, pSRB);
3143 pSRB->scsi_done(pSRB); /* Notify system DONE */
3144
3145 tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
3146}
3147
3148/*
3149 * Release ressources
3150 */
3151static int i91u_release(struct Scsi_Host *hreg)
3152{
3153 free_irq(hreg->irq, hreg);
3154 release_region(hreg->io_port, 256);
3155 return 0;
3156}
3157MODULE_LICENSE("Dual BSD/GPL");
3158
3159static struct scsi_host_template driver_template = {
3160 .proc_name = "INI9100U",
3161 .name = i91u_REVID,
3162 .detect = i91u_detect,
3163 .release = i91u_release,
3164 .queuecommand = i91u_queuecommand,
3165// .abort = i91u_abort,
3166// .reset = i91u_reset,
3167 .eh_bus_reset_handler = i91u_bus_reset,
3168 .bios_param = i91u_biosparam,
3169 .can_queue = 1,
3170 .this_id = 1,
3171 .sg_tablesize = SG_ALL,
3172 .cmd_per_lun = 1,
3173 .use_clustering = ENABLE_CLUSTERING,
3174};
3175#include "scsi_module.c"
3176