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gerrit-public.fairphone.software / kernel / msm-4.9 / 4ff36718ede26ee2da73f2dae94d71e2b06845fc / . / drivers / scsi / initio.c
blob: 9e10dac61cfd2857dbd3560320f737694e9cafe8 [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>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]121#include <linux/kernel.h>
122#include <linux/proc_fs.h>
123#include <linux/string.h>
124#include <linux/interrupt.h>
125#include <linux/ioport.h>
126#include <linux/sched.h>
127#include <linux/slab.h>
128#include <linux/jiffies.h>
Matthias Gehre910638a2006-03-28 01:56:48 -0800[diff] [blame]129#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]130#include <asm/io.h>
131
132#include <scsi/scsi.h>
133#include <scsi/scsi_cmnd.h>
134#include <scsi/scsi_device.h>
135#include <scsi/scsi_host.h>
136#include <scsi/scsi_tcq.h>
137
138#include "initio.h"
139
140#define SENSE_SIZE 14
141
142#define i91u_MAXQUEUE 2
143#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
144
145#define INI_VENDOR_ID 0x1101 /* Initio's PCI vendor ID */
146#define DMX_VENDOR_ID 0x134a /* Domex's PCI vendor ID */
147#define I950_DEVICE_ID 0x9500 /* Initio's inic-950 product ID */
148#define I940_DEVICE_ID 0x9400 /* Initio's inic-940 product ID */
149#define I935_DEVICE_ID 0x9401 /* Initio's inic-935 product ID */
150#define I920_DEVICE_ID 0x0002 /* Initio's other product ID */
151
152#ifdef DEBUG_i91u
153static unsigned int i91u_debug = DEBUG_DEFAULT;
154#endif
155
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]156#define TUL_RDWORD(x,y) (short)(inl((int)((ULONG)((ULONG)x+(UCHAR)y)) ))
157
158typedef struct PCI_ID_Struc {
159 unsigned short vendor_id;
160 unsigned short device_id;
161} PCI_ID;
162
163static int tul_num_ch = 4; /* Maximum 4 adapters */
164static int tul_num_scb;
165static int tul_tag_enable = 1;
166static SCB *tul_scb;
167
168#ifdef DEBUG_i91u
169static int setup_debug = 0;
170#endif
171
172static void i91uSCBPost(BYTE * pHcb, BYTE * pScb);
173
174static const PCI_ID i91u_pci_devices[] = {
175 { INI_VENDOR_ID, I950_DEVICE_ID },
176 { INI_VENDOR_ID, I940_DEVICE_ID },
177 { INI_VENDOR_ID, I935_DEVICE_ID },
178 { INI_VENDOR_ID, I920_DEVICE_ID },
179 { DMX_VENDOR_ID, I920_DEVICE_ID },
180};
181
182#define DEBUG_INTERRUPT 0
183#define DEBUG_QUEUE 0
184#define DEBUG_STATE 0
185#define INT_DISC 0
186
187/*--- external functions --*/
188static void tul_se2_wait(void);
189
190/*--- forward refrence ---*/
191static SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun);
192static SCB *tul_find_done_scb(HCS * pCurHcb);
193
194static int tulip_main(HCS * pCurHcb);
195
196static int tul_next_state(HCS * pCurHcb);
197static int tul_state_1(HCS * pCurHcb);
198static int tul_state_2(HCS * pCurHcb);
199static int tul_state_3(HCS * pCurHcb);
200static int tul_state_4(HCS * pCurHcb);
201static int tul_state_5(HCS * pCurHcb);
202static int tul_state_6(HCS * pCurHcb);
203static int tul_state_7(HCS * pCurHcb);
204static int tul_xfer_data_in(HCS * pCurHcb);
205static int tul_xfer_data_out(HCS * pCurHcb);
206static int tul_xpad_in(HCS * pCurHcb);
207static int tul_xpad_out(HCS * pCurHcb);
208static int tul_status_msg(HCS * pCurHcb);
209
210static int tul_msgin(HCS * pCurHcb);
211static int tul_msgin_sync(HCS * pCurHcb);
212static int tul_msgin_accept(HCS * pCurHcb);
213static int tul_msgout_reject(HCS * pCurHcb);
214static int tul_msgin_extend(HCS * pCurHcb);
215
216static int tul_msgout_ide(HCS * pCurHcb);
217static int tul_msgout_abort_targ(HCS * pCurHcb);
218static int tul_msgout_abort_tag(HCS * pCurHcb);
219
220static int tul_bus_device_reset(HCS * pCurHcb);
221static void tul_select_atn(HCS * pCurHcb, SCB * pCurScb);
222static void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb);
223static void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb);
224static int int_tul_busfree(HCS * pCurHcb);
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]225static int int_tul_scsi_rst(HCS * pCurHcb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]226static int int_tul_bad_seq(HCS * pCurHcb);
227static int int_tul_resel(HCS * pCurHcb);
228static int tul_sync_done(HCS * pCurHcb);
229static int wdtr_done(HCS * pCurHcb);
230static int wait_tulip(HCS * pCurHcb);
231static int tul_wait_done_disc(HCS * pCurHcb);
232static int tul_wait_disc(HCS * pCurHcb);
233static void tulip_scsi(HCS * pCurHcb);
234static int tul_post_scsi_rst(HCS * pCurHcb);
235
236static void tul_se2_ew_en(WORD CurBase);
237static void tul_se2_ew_ds(WORD CurBase);
238static int tul_se2_rd_all(WORD CurBase);
239static void tul_se2_update_all(WORD CurBase); /* setup default pattern */
240static void tul_read_eeprom(WORD CurBase);
241
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]242 /* ---- INTERNAL VARIABLES ---- */
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]243static HCS tul_hcs[MAX_SUPPORTED_ADAPTERS];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]244static INI_ADPT_STRUCT i91u_adpt[MAX_SUPPORTED_ADAPTERS];
245
246/*NVRAM nvram, *nvramp = &nvram; */
247static NVRAM i91unvram;
248static NVRAM *i91unvramp;
249
250
251
252static UCHAR i91udftNvRam[64] =
253{
254/*----------- header -----------*/
255 0x25, 0xc9, /* Signature */
256 0x40, /* Size */
257 0x01, /* Revision */
258 /* -- Host Adapter Structure -- */
259 0x95, /* ModelByte0 */
260 0x00, /* ModelByte1 */
261 0x00, /* ModelInfo */
262 0x01, /* NumOfCh */
263 NBC1_DEFAULT, /* BIOSConfig1 */
264 0, /* BIOSConfig2 */
265 0, /* HAConfig1 */
266 0, /* HAConfig2 */
267 /* SCSI channel 0 and target Structure */
268 7, /* SCSIid */
269 NCC1_DEFAULT, /* SCSIconfig1 */
270 0, /* SCSIconfig2 */
271 0x10, /* NumSCSItarget */
272
273 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
274 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
275 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
276 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
277
278 /* SCSI channel 1 and target Structure */
279 7, /* SCSIid */
280 NCC1_DEFAULT, /* SCSIconfig1 */
281 0, /* SCSIconfig2 */
282 0x10, /* NumSCSItarget */
283
284 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
285 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
286 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
287 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
288 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
289 0, 0}; /* - CheckSum - */
290
291
292static UCHAR tul_rate_tbl[8] = /* fast 20 */
293{
294 /* nanosecond devide by 4 */
295 12, /* 50ns, 20M */
296 18, /* 75ns, 13.3M */
297 25, /* 100ns, 10M */
298 31, /* 125ns, 8M */
299 37, /* 150ns, 6.6M */
300 43, /* 175ns, 5.7M */
301 50, /* 200ns, 5M */
302 62 /* 250ns, 4M */
303};
304
305static void tul_do_pause(unsigned amount)
306{ /* Pause for amount jiffies */
307 unsigned long the_time = jiffies + amount;
308
309 while (time_before_eq(jiffies, the_time));
310}
311
312/*-- forward reference --*/
313
314/*******************************************************************
315 Use memeory refresh time ~ 15us * 2
316********************************************************************/
317void tul_se2_wait(void)
318{
319#if 1
320 udelay(30);
321#else
322 UCHAR readByte;
323
324 readByte = TUL_RD(0, 0x61);
325 if ((readByte & 0x10) == 0x10) {
326 for (;;) {
327 readByte = TUL_RD(0, 0x61);
328 if ((readByte & 0x10) == 0x10)
329 break;
330 }
331 for (;;) {
332 readByte = TUL_RD(0, 0x61);
333 if ((readByte & 0x10) != 0x10)
334 break;
335 }
336 } else {
337 for (;;) {
338 readByte = TUL_RD(0, 0x61);
339 if ((readByte & 0x10) == 0x10)
340 break;
341 }
342 for (;;) {
343 readByte = TUL_RD(0, 0x61);
344 if ((readByte & 0x10) != 0x10)
345 break;
346 }
347 }
348#endif
349}
350
351
352/******************************************************************
353 Input: instruction for Serial E2PROM
354
355 EX: se2_rd(0 call se2_instr() to send address and read command
356
357 StartBit OP_Code Address Data
358 --------- -------- ------------------ -------
359 1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0
360
361 +-----------------------------------------------------
362 |
363 CS -----+
364 +--+ +--+ +--+ +--+ +--+
365 ^ | ^ | ^ | ^ | ^ |
366 | | | | | | | | | |
367 CLK -------+ +--+ +--+ +--+ +--+ +--
368 (leading edge trigger)
369
370 +--1-----1--+
371 | SB OP | OP A5 A4
372 DI ----+ +--0------------------
373 (address and cmd sent to nvram)
374
375 -------------------------------------------+
376 |
377 DO +---
378 (data sent from nvram)
379
380
381******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]382static void tul_se2_instr(WORD CurBase, UCHAR instr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]383{
384 int i;
385 UCHAR b;
386
387 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* cs+start bit */
388 tul_se2_wait();
389 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK | SE2DO); /* +CLK */
390 tul_se2_wait();
391
392 for (i = 0; i < 8; i++) {
393 if (instr & 0x80)
394 b = SE2CS | SE2DO; /* -CLK+dataBit */
395 else
396 b = SE2CS; /* -CLK */
397 TUL_WR(CurBase + TUL_NVRAM, b);
398 tul_se2_wait();
399 TUL_WR(CurBase + TUL_NVRAM, b | SE2CLK); /* +CLK */
400 tul_se2_wait();
401 instr <<= 1;
402 }
403 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
404 tul_se2_wait();
405 return;
406}
407
408
409/******************************************************************
410 Function name : tul_se2_ew_en
411 Description : Enable erase/write state of serial EEPROM
412******************************************************************/
413void tul_se2_ew_en(WORD CurBase)
414{
415 tul_se2_instr(CurBase, 0x30); /* EWEN */
416 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
417 tul_se2_wait();
418 return;
419}
420
421
422/************************************************************************
423 Disable erase/write state of serial EEPROM
424*************************************************************************/
425void tul_se2_ew_ds(WORD CurBase)
426{
427 tul_se2_instr(CurBase, 0); /* EWDS */
428 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
429 tul_se2_wait();
430 return;
431}
432
433
434/******************************************************************
435 Input :address of Serial E2PROM
436 Output :value stored in Serial E2PROM
437*******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]438static USHORT tul_se2_rd(WORD CurBase, ULONG adr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]439{
440 UCHAR instr, readByte;
441 USHORT readWord;
442 int i;
443
444 instr = (UCHAR) (adr | 0x80);
445 tul_se2_instr(CurBase, instr); /* READ INSTR */
446 readWord = 0;
447
448 for (i = 15; i >= 0; i--) {
449 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
450 tul_se2_wait();
451 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
452
453 /* sample data after the following edge of clock */
454 readByte = TUL_RD(CurBase, TUL_NVRAM);
455 readByte &= SE2DI;
456 readWord += (readByte << i);
457 tul_se2_wait(); /* 6/20/95 */
458 }
459
460 TUL_WR(CurBase + TUL_NVRAM, 0); /* no chip select */
461 tul_se2_wait();
462 return readWord;
463}
464
465
466/******************************************************************
467 Input: new value in Serial E2PROM, address of Serial E2PROM
468*******************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]469static void tul_se2_wr(WORD CurBase, UCHAR adr, USHORT writeWord)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]470{
471 UCHAR readByte;
472 UCHAR instr;
473 int i;
474
475 instr = (UCHAR) (adr | 0x40);
476 tul_se2_instr(CurBase, instr); /* WRITE INSTR */
477 for (i = 15; i >= 0; i--) {
478 if (writeWord & 0x8000)
479 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2DO); /* -CLK+dataBit 1 */
480 else
481 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK+dataBit 0 */
482 tul_se2_wait();
483 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
484 tul_se2_wait();
485 writeWord <<= 1;
486 }
487 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
488 tul_se2_wait();
489 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
490 tul_se2_wait();
491
492 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* +CS */
493 tul_se2_wait();
494
495 for (;;) {
496 TUL_WR(CurBase + TUL_NVRAM, SE2CS | SE2CLK); /* +CLK */
497 tul_se2_wait();
498 TUL_WR(CurBase + TUL_NVRAM, SE2CS); /* -CLK */
499 tul_se2_wait();
500 if ((readByte = TUL_RD(CurBase, TUL_NVRAM)) & SE2DI)
501 break; /* write complete */
502 }
503 TUL_WR(CurBase + TUL_NVRAM, 0); /* -CS */
504 return;
505}
506
507
508/***********************************************************************
509 Read SCSI H/A configuration parameters from serial EEPROM
510************************************************************************/
511int tul_se2_rd_all(WORD CurBase)
512{
513 int i;
514 ULONG chksum = 0;
515 USHORT *np;
516
517 i91unvramp = &i91unvram;
518 np = (USHORT *) i91unvramp;
519 for (i = 0; i < 32; i++) {
520 *np++ = tul_se2_rd(CurBase, i);
521 }
522
523/*--------------------Is signature "ini" ok ? ----------------*/
524 if (i91unvramp->NVM_Signature != INI_SIGNATURE)
525 return -1;
526/*---------------------- Is ckecksum ok ? ----------------------*/
527 np = (USHORT *) i91unvramp;
528 for (i = 0; i < 31; i++)
529 chksum += *np++;
530 if (i91unvramp->NVM_CheckSum != (USHORT) chksum)
531 return -1;
532 return 1;
533}
534
535
536/***********************************************************************
537 Update SCSI H/A configuration parameters from serial EEPROM
538************************************************************************/
539void tul_se2_update_all(WORD CurBase)
540{ /* setup default pattern */
541 int i;
542 ULONG chksum = 0;
543 USHORT *np, *np1;
544
545 i91unvramp = &i91unvram;
546 /* Calculate checksum first */
547 np = (USHORT *) i91udftNvRam;
548 for (i = 0; i < 31; i++)
549 chksum += *np++;
550 *np = (USHORT) chksum;
551 tul_se2_ew_en(CurBase); /* Enable write */
552
553 np = (USHORT *) i91udftNvRam;
554 np1 = (USHORT *) i91unvramp;
555 for (i = 0; i < 32; i++, np++, np1++) {
556 if (*np != *np1) {
557 tul_se2_wr(CurBase, i, *np);
558 }
559 }
560
561 tul_se2_ew_ds(CurBase); /* Disable write */
562 return;
563}
564
565/*************************************************************************
566 Function name : read_eeprom
567**************************************************************************/
568void tul_read_eeprom(WORD CurBase)
569{
570 UCHAR gctrl;
571
572 i91unvramp = &i91unvram;
573/*------Enable EEProm programming ---*/
574 gctrl = TUL_RD(CurBase, TUL_GCTRL);
575 TUL_WR(CurBase + TUL_GCTRL, gctrl | TUL_GCTRL_EEPROM_BIT);
576 if (tul_se2_rd_all(CurBase) != 1) {
577 tul_se2_update_all(CurBase); /* setup default pattern */
578 tul_se2_rd_all(CurBase); /* load again */
579 }
580/*------ Disable EEProm programming ---*/
581 gctrl = TUL_RD(CurBase, TUL_GCTRL);
582 TUL_WR(CurBase + TUL_GCTRL, gctrl & ~TUL_GCTRL_EEPROM_BIT);
583} /* read_eeprom */
584
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]585static int Addi91u_into_Adapter_table(WORD wBIOS, WORD wBASE, BYTE bInterrupt,
586 BYTE bBus, BYTE bDevice)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]587{
588 int i, j;
589
590 for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) {
591 if (i91u_adpt[i].ADPT_BIOS < wBIOS)
592 continue;
593 if (i91u_adpt[i].ADPT_BIOS == wBIOS) {
594 if (i91u_adpt[i].ADPT_BASE == wBASE) {
595 if (i91u_adpt[i].ADPT_Bus != 0xFF)
596 return 1;
597 } else if (i91u_adpt[i].ADPT_BASE < wBASE)
598 continue;
599 }
600 for (j = MAX_SUPPORTED_ADAPTERS - 1; j > i; j--) {
601 i91u_adpt[j].ADPT_BASE = i91u_adpt[j - 1].ADPT_BASE;
602 i91u_adpt[j].ADPT_INTR = i91u_adpt[j - 1].ADPT_INTR;
603 i91u_adpt[j].ADPT_BIOS = i91u_adpt[j - 1].ADPT_BIOS;
604 i91u_adpt[j].ADPT_Bus = i91u_adpt[j - 1].ADPT_Bus;
605 i91u_adpt[j].ADPT_Device = i91u_adpt[j - 1].ADPT_Device;
606 }
607 i91u_adpt[i].ADPT_BASE = wBASE;
608 i91u_adpt[i].ADPT_INTR = bInterrupt;
609 i91u_adpt[i].ADPT_BIOS = wBIOS;
610 i91u_adpt[i].ADPT_Bus = bBus;
611 i91u_adpt[i].ADPT_Device = bDevice;
612 return 0;
613 }
614 return 1;
615}
616
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]617static void init_i91uAdapter_table(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]618{
619 int i;
620
621 for (i = 0; i < MAX_SUPPORTED_ADAPTERS; i++) { /* Initialize adapter structure */
622 i91u_adpt[i].ADPT_BIOS = 0xffff;
623 i91u_adpt[i].ADPT_BASE = 0xffff;
624 i91u_adpt[i].ADPT_INTR = 0xff;
625 i91u_adpt[i].ADPT_Bus = 0xff;
626 i91u_adpt[i].ADPT_Device = 0xff;
627 }
628 return;
629}
630
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]631static void tul_stop_bm(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]632{
633
634 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
635 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
636 /* wait Abort DMA xfer done */
637 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
638 }
639 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
640}
641
642/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]643static void get_tulipPCIConfig(HCS * pCurHcb, int ch_idx)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]644{
645 pCurHcb->HCS_Base = i91u_adpt[ch_idx].ADPT_BASE; /* Supply base address */
646 pCurHcb->HCS_BIOS = i91u_adpt[ch_idx].ADPT_BIOS; /* Supply BIOS address */
647 pCurHcb->HCS_Intr = i91u_adpt[ch_idx].ADPT_INTR; /* Supply interrupt line */
648 return;
649}
650
651/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]652static int tul_reset_scsi(HCS * pCurHcb, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]653{
654 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_BUS);
655
656 while (!((pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt)) & TSS_SCSIRST_INT));
657 /* reset tulip chip */
658
659 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, 0);
660
661 /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
662 /* SONY 5200 tape drive won't work if only stall for 1 sec */
663 tul_do_pause(seconds * HZ);
664
665 TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
666
667 return (SCSI_RESET_SUCCESS);
668}
669
670/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]671static int init_tulip(HCS * pCurHcb, SCB * scbp, int tul_num_scb,
672 BYTE * pbBiosAdr, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]673{
674 int i;
675 BYTE *pwFlags;
676 BYTE *pbHeads;
677 SCB *pTmpScb, *pPrevScb = NULL;
678
679 pCurHcb->HCS_NumScbs = tul_num_scb;
680 pCurHcb->HCS_Semaph = 1;
681 spin_lock_init(&pCurHcb->HCS_SemaphLock);
682 pCurHcb->HCS_JSStatus0 = 0;
683 pCurHcb->HCS_Scb = scbp;
684 pCurHcb->HCS_NxtPend = scbp;
685 pCurHcb->HCS_NxtAvail = scbp;
686 for (i = 0, pTmpScb = scbp; i < tul_num_scb; i++, pTmpScb++) {
687 pTmpScb->SCB_TagId = i;
688 if (i != 0)
689 pPrevScb->SCB_NxtScb = pTmpScb;
690 pPrevScb = pTmpScb;
691 }
692 pPrevScb->SCB_NxtScb = NULL;
693 pCurHcb->HCS_ScbEnd = pTmpScb;
694 pCurHcb->HCS_FirstAvail = scbp;
695 pCurHcb->HCS_LastAvail = pPrevScb;
696 spin_lock_init(&pCurHcb->HCS_AvailLock);
697 pCurHcb->HCS_FirstPend = NULL;
698 pCurHcb->HCS_LastPend = NULL;
699 pCurHcb->HCS_FirstBusy = NULL;
700 pCurHcb->HCS_LastBusy = NULL;
701 pCurHcb->HCS_FirstDone = NULL;
702 pCurHcb->HCS_LastDone = NULL;
703 pCurHcb->HCS_ActScb = NULL;
704 pCurHcb->HCS_ActTcs = NULL;
705
706 tul_read_eeprom(pCurHcb->HCS_Base);
707/*---------- get H/A configuration -------------*/
708 if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
709 pCurHcb->HCS_MaxTar = 8;
710 else
711 pCurHcb->HCS_MaxTar = 16;
712
713 pCurHcb->HCS_Config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
714
715 pCurHcb->HCS_SCSI_ID = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
716 pCurHcb->HCS_IdMask = ~(1 << pCurHcb->HCS_SCSI_ID);
717
Olaf Hering44456d32005-07-27 11:45:17 -0700[diff] [blame]718#ifdef CHK_PARITY
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]719 /* Enable parity error response */
720 TUL_WR(pCurHcb->HCS_Base + TUL_PCMD, TUL_RD(pCurHcb->HCS_Base, TUL_PCMD) | 0x40);
721#endif
722
723 /* Mask all the interrupt */
724 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
725
726 tul_stop_bm(pCurHcb);
727 /* --- Initialize the tulip --- */
728 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_RST_CHIP);
729
730 /* program HBA's SCSI ID */
731 TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId, pCurHcb->HCS_SCSI_ID << 4);
732
733 /* Enable Initiator Mode ,phase latch,alternate sync period mode,
734 disable SCSI reset */
735 if (pCurHcb->HCS_Config & HCC_EN_PAR)
736 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
737 else
738 pCurHcb->HCS_SConf1 = (TSC_INITDEFAULT);
739 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_SConf1);
740
741 /* Enable HW reselect */
742 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
743
744 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, 0);
745
746 /* selection time out = 250 ms */
747 TUL_WR(pCurHcb->HCS_Base + TUL_STimeOut, 153);
748
749/*--------- Enable SCSI terminator -----*/
750 TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, (pCurHcb->HCS_Config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)));
751 TUL_WR(pCurHcb->HCS_Base + TUL_GCTRL1,
752 ((pCurHcb->HCS_Config & HCC_AUTO_TERM) >> 4) | (TUL_RD(pCurHcb->HCS_Base, TUL_GCTRL1) & 0xFE));
753
754 for (i = 0,
755 pwFlags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
756 pbHeads = pbBiosAdr + 0x180;
757 i < pCurHcb->HCS_MaxTar;
758 i++, pwFlags++) {
759 pCurHcb->HCS_Tcs[i].TCS_Flags = *pwFlags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
760 if (pCurHcb->HCS_Tcs[i].TCS_Flags & TCF_EN_255)
761 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
762 else
763 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
764 pCurHcb->HCS_Tcs[i].TCS_JS_Period = 0;
765 pCurHcb->HCS_Tcs[i].TCS_SConfig0 = pCurHcb->HCS_SConf1;
766 pCurHcb->HCS_Tcs[i].TCS_DrvHead = *pbHeads++;
767 if (pCurHcb->HCS_Tcs[i].TCS_DrvHead == 255)
768 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = TCF_DRV_255_63;
769 else
770 pCurHcb->HCS_Tcs[i].TCS_DrvFlags = 0;
771 pCurHcb->HCS_Tcs[i].TCS_DrvSector = *pbHeads++;
772 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY;
773 pCurHcb->HCS_ActTags[i] = 0;
774 pCurHcb->HCS_MaxTags[i] = 0xFF;
775 } /* for */
776 printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
777 pCurHcb->HCS_Base, pCurHcb->HCS_Intr,
778 pCurHcb->HCS_BIOS, pCurHcb->HCS_SCSI_ID);
779/*------------------- reset SCSI Bus ---------------------------*/
780 if (pCurHcb->HCS_Config & HCC_SCSI_RESET) {
781 printk("i91u: Reset SCSI Bus ... \n");
782 tul_reset_scsi(pCurHcb, seconds);
783 }
784 TUL_WR(pCurHcb->HCS_Base + TUL_SCFG1, 0x17);
785 TUL_WR(pCurHcb->HCS_Base + TUL_SIntEnable, 0xE9);
786 return (0);
787}
788
789/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]790static SCB *tul_alloc_scb(HCS * hcsp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]791{
792 SCB *pTmpScb;
793 ULONG flags;
794 spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
795 if ((pTmpScb = hcsp->HCS_FirstAvail) != NULL) {
796#if DEBUG_QUEUE
797 printk("find scb at %08lx\n", (ULONG) pTmpScb);
798#endif
799 if ((hcsp->HCS_FirstAvail = pTmpScb->SCB_NxtScb) == NULL)
800 hcsp->HCS_LastAvail = NULL;
801 pTmpScb->SCB_NxtScb = NULL;
802 pTmpScb->SCB_Status = SCB_RENT;
803 }
804 spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
805 return (pTmpScb);
806}
807
808/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]809static void tul_release_scb(HCS * hcsp, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]810{
811 ULONG flags;
812
813#if DEBUG_QUEUE
814 printk("Release SCB %lx; ", (ULONG) scbp);
815#endif
816 spin_lock_irqsave(&(hcsp->HCS_AvailLock), flags);
817 scbp->SCB_Srb = NULL;
818 scbp->SCB_Status = 0;
819 scbp->SCB_NxtScb = NULL;
820 if (hcsp->HCS_LastAvail != NULL) {
821 hcsp->HCS_LastAvail->SCB_NxtScb = scbp;
822 hcsp->HCS_LastAvail = scbp;
823 } else {
824 hcsp->HCS_FirstAvail = scbp;
825 hcsp->HCS_LastAvail = scbp;
826 }
827 spin_unlock_irqrestore(&(hcsp->HCS_AvailLock), flags);
828}
829
830/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]831static void tul_append_pend_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]832{
833
834#if DEBUG_QUEUE
835 printk("Append pend SCB %lx; ", (ULONG) scbp);
836#endif
837 scbp->SCB_Status = SCB_PEND;
838 scbp->SCB_NxtScb = NULL;
839 if (pCurHcb->HCS_LastPend != NULL) {
840 pCurHcb->HCS_LastPend->SCB_NxtScb = scbp;
841 pCurHcb->HCS_LastPend = scbp;
842 } else {
843 pCurHcb->HCS_FirstPend = scbp;
844 pCurHcb->HCS_LastPend = scbp;
845 }
846}
847
848/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]849static void tul_push_pend_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]850{
851
852#if DEBUG_QUEUE
853 printk("Push pend SCB %lx; ", (ULONG) scbp);
854#endif
855 scbp->SCB_Status = SCB_PEND;
856 if ((scbp->SCB_NxtScb = pCurHcb->HCS_FirstPend) != NULL) {
857 pCurHcb->HCS_FirstPend = scbp;
858 } else {
859 pCurHcb->HCS_FirstPend = scbp;
860 pCurHcb->HCS_LastPend = scbp;
861 }
862}
863
864/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]865static SCB *tul_find_first_pend_scb(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]866{
867 SCB *pFirstPend;
868
869
870 pFirstPend = pCurHcb->HCS_FirstPend;
871 while (pFirstPend != NULL) {
872 if (pFirstPend->SCB_Opcode != ExecSCSI) {
873 return (pFirstPend);
874 }
875 if (pFirstPend->SCB_TagMsg == 0) {
876 if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] == 0) &&
877 !(pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
878 return (pFirstPend);
879 }
880 } else {
881 if ((pCurHcb->HCS_ActTags[pFirstPend->SCB_Target] >=
882 pCurHcb->HCS_MaxTags[pFirstPend->SCB_Target]) |
883 (pCurHcb->HCS_Tcs[pFirstPend->SCB_Target].TCS_Flags & TCF_BUSY)) {
884 pFirstPend = pFirstPend->SCB_NxtScb;
885 continue;
886 }
887 return (pFirstPend);
888 }
889 pFirstPend = pFirstPend->SCB_NxtScb;
890 }
891
892
893 return (pFirstPend);
894}
895/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]896static void tul_unlink_pend_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]897{
898 SCB *pTmpScb, *pPrevScb;
899
900#if DEBUG_QUEUE
901 printk("unlink pend SCB %lx; ", (ULONG) pCurScb);
902#endif
903
904 pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend;
905 while (pTmpScb != NULL) {
906 if (pCurScb == pTmpScb) { /* Unlink this SCB */
907 if (pTmpScb == pCurHcb->HCS_FirstPend) {
908 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
909 pCurHcb->HCS_LastPend = NULL;
910 } else {
911 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
912 if (pTmpScb == pCurHcb->HCS_LastPend)
913 pCurHcb->HCS_LastPend = pPrevScb;
914 }
915 pTmpScb->SCB_NxtScb = NULL;
916 break;
917 }
918 pPrevScb = pTmpScb;
919 pTmpScb = pTmpScb->SCB_NxtScb;
920 }
921 return;
922}
923/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]924static void tul_append_busy_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]925{
926
927#if DEBUG_QUEUE
928 printk("append busy SCB %lx; ", (ULONG) scbp);
929#endif
930 if (scbp->SCB_TagMsg)
931 pCurHcb->HCS_ActTags[scbp->SCB_Target]++;
932 else
933 pCurHcb->HCS_Tcs[scbp->SCB_Target].TCS_Flags |= TCF_BUSY;
934 scbp->SCB_Status = SCB_BUSY;
935 scbp->SCB_NxtScb = NULL;
936 if (pCurHcb->HCS_LastBusy != NULL) {
937 pCurHcb->HCS_LastBusy->SCB_NxtScb = scbp;
938 pCurHcb->HCS_LastBusy = scbp;
939 } else {
940 pCurHcb->HCS_FirstBusy = scbp;
941 pCurHcb->HCS_LastBusy = scbp;
942 }
943}
944
945/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]946static SCB *tul_pop_busy_scb(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]947{
948 SCB *pTmpScb;
949
950
951 if ((pTmpScb = pCurHcb->HCS_FirstBusy) != NULL) {
952 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
953 pCurHcb->HCS_LastBusy = NULL;
954 pTmpScb->SCB_NxtScb = NULL;
955 if (pTmpScb->SCB_TagMsg)
956 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
957 else
958 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
959 }
960#if DEBUG_QUEUE
961 printk("Pop busy SCB %lx; ", (ULONG) pTmpScb);
962#endif
963 return (pTmpScb);
964}
965
966/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]967static void tul_unlink_busy_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]968{
969 SCB *pTmpScb, *pPrevScb;
970
971#if DEBUG_QUEUE
972 printk("unlink busy SCB %lx; ", (ULONG) pCurScb);
973#endif
974
975 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
976 while (pTmpScb != NULL) {
977 if (pCurScb == pTmpScb) { /* Unlink this SCB */
978 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
979 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
980 pCurHcb->HCS_LastBusy = NULL;
981 } else {
982 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
983 if (pTmpScb == pCurHcb->HCS_LastBusy)
984 pCurHcb->HCS_LastBusy = pPrevScb;
985 }
986 pTmpScb->SCB_NxtScb = NULL;
987 if (pTmpScb->SCB_TagMsg)
988 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
989 else
990 pCurHcb->HCS_Tcs[pTmpScb->SCB_Target].TCS_Flags &= ~TCF_BUSY;
991 break;
992 }
993 pPrevScb = pTmpScb;
994 pTmpScb = pTmpScb->SCB_NxtScb;
995 }
996 return;
997}
998
999/***************************************************************************/
1000SCB *tul_find_busy_scb(HCS * pCurHcb, WORD tarlun)
1001{
1002 SCB *pTmpScb, *pPrevScb;
1003 WORD scbp_tarlun;
1004
1005
1006 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy;
1007 while (pTmpScb != NULL) {
1008 scbp_tarlun = (pTmpScb->SCB_Lun << 8) | (pTmpScb->SCB_Target);
1009 if (scbp_tarlun == tarlun) { /* Unlink this SCB */
1010 break;
1011 }
1012 pPrevScb = pTmpScb;
1013 pTmpScb = pTmpScb->SCB_NxtScb;
1014 }
1015#if DEBUG_QUEUE
1016 printk("find busy SCB %lx; ", (ULONG) pTmpScb);
1017#endif
1018 return (pTmpScb);
1019}
1020
1021/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1022static void tul_append_done_scb(HCS * pCurHcb, SCB * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1023{
1024
1025#if DEBUG_QUEUE
1026 printk("append done SCB %lx; ", (ULONG) scbp);
1027#endif
1028
1029 scbp->SCB_Status = SCB_DONE;
1030 scbp->SCB_NxtScb = NULL;
1031 if (pCurHcb->HCS_LastDone != NULL) {
1032 pCurHcb->HCS_LastDone->SCB_NxtScb = scbp;
1033 pCurHcb->HCS_LastDone = scbp;
1034 } else {
1035 pCurHcb->HCS_FirstDone = scbp;
1036 pCurHcb->HCS_LastDone = scbp;
1037 }
1038}
1039
1040/***************************************************************************/
1041SCB *tul_find_done_scb(HCS * pCurHcb)
1042{
1043 SCB *pTmpScb;
1044
1045
1046 if ((pTmpScb = pCurHcb->HCS_FirstDone) != NULL) {
1047 if ((pCurHcb->HCS_FirstDone = pTmpScb->SCB_NxtScb) == NULL)
1048 pCurHcb->HCS_LastDone = NULL;
1049 pTmpScb->SCB_NxtScb = NULL;
1050 }
1051#if DEBUG_QUEUE
1052 printk("find done SCB %lx; ", (ULONG) pTmpScb);
1053#endif
1054 return (pTmpScb);
1055}
1056
1057/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1058static int tul_abort_srb(HCS * pCurHcb, struct scsi_cmnd *srbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1059{
1060 ULONG flags;
1061 SCB *pTmpScb, *pPrevScb;
1062
1063 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1064
1065 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1066 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1067 /* disable Jasmin SCSI Int */
1068
1069 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1070
1071 tulip_main(pCurHcb);
1072
1073 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1074
1075 pCurHcb->HCS_Semaph = 1;
1076 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1077
1078 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1079
1080 return SCSI_ABORT_SNOOZE;
1081 }
1082 pPrevScb = pTmpScb = pCurHcb->HCS_FirstPend; /* Check Pend queue */
1083 while (pTmpScb != NULL) {
1084 /* 07/27/98 */
1085 if (pTmpScb->SCB_Srb == srbp) {
1086 if (pTmpScb == pCurHcb->HCS_ActScb) {
1087 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1088 return SCSI_ABORT_BUSY;
1089 } else if (pTmpScb == pCurHcb->HCS_FirstPend) {
1090 if ((pCurHcb->HCS_FirstPend = pTmpScb->SCB_NxtScb) == NULL)
1091 pCurHcb->HCS_LastPend = NULL;
1092 } else {
1093 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1094 if (pTmpScb == pCurHcb->HCS_LastPend)
1095 pCurHcb->HCS_LastPend = pPrevScb;
1096 }
1097 pTmpScb->SCB_HaStat = HOST_ABORTED;
1098 pTmpScb->SCB_Flags |= SCF_DONE;
1099 if (pTmpScb->SCB_Flags & SCF_POST)
1100 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1101 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1102 return SCSI_ABORT_SUCCESS;
1103 }
1104 pPrevScb = pTmpScb;
1105 pTmpScb = pTmpScb->SCB_NxtScb;
1106 }
1107
1108 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
1109 while (pTmpScb != NULL) {
1110
1111 if (pTmpScb->SCB_Srb == srbp) {
1112
1113 if (pTmpScb == pCurHcb->HCS_ActScb) {
1114 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1115 return SCSI_ABORT_BUSY;
1116 } else if (pTmpScb->SCB_TagMsg == 0) {
1117 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1118 return SCSI_ABORT_BUSY;
1119 } else {
1120 pCurHcb->HCS_ActTags[pTmpScb->SCB_Target]--;
1121 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
1122 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
1123 pCurHcb->HCS_LastBusy = NULL;
1124 } else {
1125 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
1126 if (pTmpScb == pCurHcb->HCS_LastBusy)
1127 pCurHcb->HCS_LastBusy = pPrevScb;
1128 }
1129 pTmpScb->SCB_NxtScb = NULL;
1130
1131
1132 pTmpScb->SCB_HaStat = HOST_ABORTED;
1133 pTmpScb->SCB_Flags |= SCF_DONE;
1134 if (pTmpScb->SCB_Flags & SCF_POST)
1135 (*pTmpScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pTmpScb);
1136 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1137 return SCSI_ABORT_SUCCESS;
1138 }
1139 }
1140 pPrevScb = pTmpScb;
1141 pTmpScb = pTmpScb->SCB_NxtScb;
1142 }
1143 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1144 return (SCSI_ABORT_NOT_RUNNING);
1145}
1146
1147/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1148static int tul_bad_seq(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1149{
1150 SCB *pCurScb;
1151
1152 printk("tul_bad_seg c=%d\n", pCurHcb->HCS_Index);
1153
1154 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
1155 tul_unlink_busy_scb(pCurHcb, pCurScb);
1156 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1157 pCurScb->SCB_TaStat = 0;
1158 tul_append_done_scb(pCurHcb, pCurScb);
1159 }
1160 tul_stop_bm(pCurHcb);
1161
1162 tul_reset_scsi(pCurHcb, 8); /* 7/29/98 */
1163
1164 return (tul_post_scsi_rst(pCurHcb));
1165}
1166
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1167#if 0
1168
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1169/************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1170static int tul_device_reset(HCS * pCurHcb, struct scsi_cmnd *pSrb,
1171 unsigned int target, unsigned int ResetFlags)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1172{
1173 ULONG flags;
1174 SCB *pScb;
1175 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1176
1177 if (ResetFlags & SCSI_RESET_ASYNCHRONOUS) {
1178
1179 if ((pCurHcb->HCS_Semaph == 0) && (pCurHcb->HCS_ActScb == NULL)) {
1180 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1181 /* disable Jasmin SCSI Int */
1182
1183 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1184
1185 tulip_main(pCurHcb);
1186
1187 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1188
1189 pCurHcb->HCS_Semaph = 1;
1190 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1191
1192 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1193
1194 return SCSI_RESET_SNOOZE;
1195 }
1196 pScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
1197 while (pScb != NULL) {
1198 if (pScb->SCB_Srb == pSrb)
1199 break;
1200 pScb = pScb->SCB_NxtScb;
1201 }
1202 if (pScb == NULL) {
1203 printk("Unable to Reset - No SCB Found\n");
1204
1205 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1206 return SCSI_RESET_NOT_RUNNING;
1207 }
1208 }
1209 if ((pScb = tul_alloc_scb(pCurHcb)) == NULL) {
1210 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1211 return SCSI_RESET_NOT_RUNNING;
1212 }
1213 pScb->SCB_Opcode = BusDevRst;
1214 pScb->SCB_Flags = SCF_POST;
1215 pScb->SCB_Target = target;
1216 pScb->SCB_Mode = 0;
1217
1218 pScb->SCB_Srb = NULL;
1219 if (ResetFlags & SCSI_RESET_SYNCHRONOUS) {
1220 pScb->SCB_Srb = pSrb;
1221 }
1222 tul_push_pend_scb(pCurHcb, pScb); /* push this SCB to Pending queue */
1223
1224 if (pCurHcb->HCS_Semaph == 1) {
1225 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1226 /* disable Jasmin SCSI Int */
1227 pCurHcb->HCS_Semaph = 0;
1228
1229 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1230
1231 tulip_main(pCurHcb);
1232
1233 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1234
1235 pCurHcb->HCS_Semaph = 1;
1236 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1237 }
1238 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1239 return SCSI_RESET_PENDING;
1240}
1241
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1242static int tul_reset_scsi_bus(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1243{
1244 ULONG flags;
1245
1246 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1247 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1248 pCurHcb->HCS_Semaph = 0;
1249
1250 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1251
1252 tul_stop_bm(pCurHcb);
1253
1254 tul_reset_scsi(pCurHcb, 2); /* 7/29/98 */
1255
1256 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1257 tul_post_scsi_rst(pCurHcb);
1258
1259 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1260
1261 tulip_main(pCurHcb);
1262
1263 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1264
1265 pCurHcb->HCS_Semaph = 1;
1266 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1267 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1268 return (SCSI_RESET_SUCCESS | SCSI_RESET_HOST_RESET);
1269}
1270
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1271#endif /* 0 */
1272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1273/************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1274static void tul_exec_scb(HCS * pCurHcb, SCB * pCurScb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1275{
1276 ULONG flags;
1277
1278 pCurScb->SCB_Mode = 0;
1279
1280 pCurScb->SCB_SGIdx = 0;
1281 pCurScb->SCB_SGMax = pCurScb->SCB_SGLen;
1282
1283 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1284
1285 tul_append_pend_scb(pCurHcb, pCurScb); /* Append this SCB to Pending queue */
1286
1287/* VVVVV 07/21/98 */
1288 if (pCurHcb->HCS_Semaph == 1) {
1289 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1290 /* disable Jasmin SCSI Int */
1291 pCurHcb->HCS_Semaph = 0;
1292
1293 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1294
1295 tulip_main(pCurHcb);
1296
1297 spin_lock_irqsave(&(pCurHcb->HCS_SemaphLock), flags);
1298
1299 pCurHcb->HCS_Semaph = 1;
1300 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1301 }
1302 spin_unlock_irqrestore(&(pCurHcb->HCS_SemaphLock), flags);
1303 return;
1304}
1305
1306/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]1307static int tul_isr(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]1308{
1309 /* Enter critical section */
1310
1311 if (TUL_RD(pCurHcb->HCS_Base, TUL_Int) & TSS_INT_PENDING) {
1312 if (pCurHcb->HCS_Semaph == 1) {
1313 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x1F);
1314 /* Disable Tulip SCSI Int */
1315 pCurHcb->HCS_Semaph = 0;
1316
1317 tulip_main(pCurHcb);
1318
1319 pCurHcb->HCS_Semaph = 1;
1320 TUL_WR(pCurHcb->HCS_Base + TUL_Mask, 0x0F);
1321 return (1);
1322 }
1323 }
1324 return (0);
1325}
1326
1327/***************************************************************************/
1328int tulip_main(HCS * pCurHcb)
1329{
1330 SCB *pCurScb;
1331
1332 for (;;) {
1333
1334 tulip_scsi(pCurHcb); /* Call tulip_scsi */
1335
1336 while ((pCurScb = tul_find_done_scb(pCurHcb)) != NULL) { /* find done entry */
1337 if (pCurScb->SCB_TaStat == INI_QUEUE_FULL) {
1338 pCurHcb->HCS_MaxTags[pCurScb->SCB_Target] =
1339 pCurHcb->HCS_ActTags[pCurScb->SCB_Target] - 1;
1340 pCurScb->SCB_TaStat = 0;
1341 tul_append_pend_scb(pCurHcb, pCurScb);
1342 continue;
1343 }
1344 if (!(pCurScb->SCB_Mode & SCM_RSENS)) { /* not in auto req. sense mode */
1345 if (pCurScb->SCB_TaStat == 2) {
1346
1347 /* clr sync. nego flag */
1348
1349 if (pCurScb->SCB_Flags & SCF_SENSE) {
1350 BYTE len;
1351 len = pCurScb->SCB_SenseLen;
1352 if (len == 0)
1353 len = 1;
1354 pCurScb->SCB_BufLen = pCurScb->SCB_SenseLen;
1355 pCurScb->SCB_BufPtr = pCurScb->SCB_SensePtr;
1356 pCurScb->SCB_Flags &= ~(SCF_SG | SCF_DIR); /* for xfer_data_in */
1357/* pCurScb->SCB_Flags |= SCF_NO_DCHK; */
1358 /* so, we won't report worng direction in xfer_data_in,
1359 and won't report HOST_DO_DU in state_6 */
1360 pCurScb->SCB_Mode = SCM_RSENS;
1361 pCurScb->SCB_Ident &= 0xBF; /* Disable Disconnect */
1362 pCurScb->SCB_TagMsg = 0;
1363 pCurScb->SCB_TaStat = 0;
1364 pCurScb->SCB_CDBLen = 6;
1365 pCurScb->SCB_CDB[0] = SCSICMD_RequestSense;
1366 pCurScb->SCB_CDB[1] = 0;
1367 pCurScb->SCB_CDB[2] = 0;
1368 pCurScb->SCB_CDB[3] = 0;
1369 pCurScb->SCB_CDB[4] = len;
1370 pCurScb->SCB_CDB[5] = 0;
1371 tul_push_pend_scb(pCurHcb, pCurScb);
1372 break;
1373 }
1374 }
1375 } else { /* in request sense mode */
1376
1377 if (pCurScb->SCB_TaStat == 2) { /* check contition status again after sending
1378 requset sense cmd 0x3 */
1379 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
1380 }
1381 pCurScb->SCB_TaStat = 2;
1382 }
1383 pCurScb->SCB_Flags |= SCF_DONE;
1384 if (pCurScb->SCB_Flags & SCF_POST) {
1385 (*pCurScb->SCB_Post) ((BYTE *) pCurHcb, (BYTE *) pCurScb);
1386 }
1387 } /* while */
1388
1389 /* find_active: */
1390 if (TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0) & TSS_INT_PENDING)
1391 continue;
1392
1393 if (pCurHcb->HCS_ActScb) { /* return to OS and wait for xfer_done_ISR/Selected_ISR */
1394 return 1; /* return to OS, enable interrupt */
1395 }
1396 /* Check pending SCB */
1397 if (tul_find_first_pend_scb(pCurHcb) == NULL) {
1398 return 1; /* return to OS, enable interrupt */
1399 }
1400 } /* End of for loop */
1401 /* statement won't reach here */
1402}
1403
1404
1405
1406
1407/*+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ */
1408/***************************************************************************/
1409/***************************************************************************/
1410/***************************************************************************/
1411/***************************************************************************/
1412
1413/***************************************************************************/
1414void tulip_scsi(HCS * pCurHcb)
1415{
1416 SCB *pCurScb;
1417 TCS *pCurTcb;
1418
1419 /* make sure to service interrupt asap */
1420
1421 if ((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0)) & TSS_INT_PENDING) {
1422
1423 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
1424 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
1425 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
1426 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* SCSI bus reset detected */
1427 int_tul_scsi_rst(pCurHcb);
1428 return;
1429 }
1430 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if selected/reselected interrupt */
1431 if (int_tul_resel(pCurHcb) == 0)
1432 tul_next_state(pCurHcb);
1433 return;
1434 }
1435 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) {
1436 int_tul_busfree(pCurHcb);
1437 return;
1438 }
1439 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
1440 int_tul_busfree(pCurHcb); /* unexpected bus free or sel timeout */
1441 return;
1442 }
1443 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) { /* func complete or Bus service */
1444 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL)
1445 tul_next_state(pCurHcb);
1446 return;
1447 }
1448 }
1449 if (pCurHcb->HCS_ActScb != NULL)
1450 return;
1451
1452 if ((pCurScb = tul_find_first_pend_scb(pCurHcb)) == NULL)
1453 return;
1454
1455 /* program HBA's SCSI ID & target SCSI ID */
1456 TUL_WR(pCurHcb->HCS_Base + TUL_SScsiId,
1457 (pCurHcb->HCS_SCSI_ID << 4) | (pCurScb->SCB_Target & 0x0F));
1458 if (pCurScb->SCB_Opcode == ExecSCSI) {
1459 pCurTcb = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
1460
1461 if (pCurScb->SCB_TagMsg)
1462 pCurTcb->TCS_DrvFlags |= TCF_DRV_EN_TAG;
1463 else
1464 pCurTcb->TCS_DrvFlags &= ~TCF_DRV_EN_TAG;
1465
1466 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
1467 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { /* do wdtr negotiation */
1468 tul_select_atn_stop(pCurHcb, pCurScb);
1469 } else {
1470 if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync negotiation */
1471 tul_select_atn_stop(pCurHcb, pCurScb);
1472 } else {
1473 if (pCurScb->SCB_TagMsg)
1474 tul_select_atn3(pCurHcb, pCurScb);
1475 else
1476 tul_select_atn(pCurHcb, pCurScb);
1477 }
1478 }
1479 if (pCurScb->SCB_Flags & SCF_POLL) {
1480 while (wait_tulip(pCurHcb) != -1) {
1481 if (tul_next_state(pCurHcb) == -1)
1482 break;
1483 }
1484 }
1485 } else if (pCurScb->SCB_Opcode == BusDevRst) {
1486 tul_select_atn_stop(pCurHcb, pCurScb);
1487 pCurScb->SCB_NxtStat = 8;
1488 if (pCurScb->SCB_Flags & SCF_POLL) {
1489 while (wait_tulip(pCurHcb) != -1) {
1490 if (tul_next_state(pCurHcb) == -1)
1491 break;
1492 }
1493 }
1494 } else if (pCurScb->SCB_Opcode == AbortCmd) {
1495 if (tul_abort_srb(pCurHcb, pCurScb->SCB_Srb) != 0) {
1496
1497
1498 tul_unlink_pend_scb(pCurHcb, pCurScb);
1499
1500 tul_release_scb(pCurHcb, pCurScb);
1501 } else {
1502 pCurScb->SCB_Opcode = BusDevRst;
1503 tul_select_atn_stop(pCurHcb, pCurScb);
1504 pCurScb->SCB_NxtStat = 8;
1505 }
1506
1507/* 08/03/98 */
1508 } else {
1509 tul_unlink_pend_scb(pCurHcb, pCurScb);
1510 pCurScb->SCB_HaStat = 0x16; /* bad command */
1511 tul_append_done_scb(pCurHcb, pCurScb);
1512 }
1513 return;
1514}
1515
1516
1517/***************************************************************************/
1518int tul_next_state(HCS * pCurHcb)
1519{
1520 int next;
1521
1522 next = pCurHcb->HCS_ActScb->SCB_NxtStat;
1523 for (;;) {
1524 switch (next) {
1525 case 1:
1526 next = tul_state_1(pCurHcb);
1527 break;
1528 case 2:
1529 next = tul_state_2(pCurHcb);
1530 break;
1531 case 3:
1532 next = tul_state_3(pCurHcb);
1533 break;
1534 case 4:
1535 next = tul_state_4(pCurHcb);
1536 break;
1537 case 5:
1538 next = tul_state_5(pCurHcb);
1539 break;
1540 case 6:
1541 next = tul_state_6(pCurHcb);
1542 break;
1543 case 7:
1544 next = tul_state_7(pCurHcb);
1545 break;
1546 case 8:
1547 return (tul_bus_device_reset(pCurHcb));
1548 default:
1549 return (tul_bad_seq(pCurHcb));
1550 }
1551 if (next <= 0)
1552 return next;
1553 }
1554}
1555
1556
1557/***************************************************************************/
1558/* sTate after selection with attention & stop */
1559int tul_state_1(HCS * pCurHcb)
1560{
1561 SCB *pCurScb = pCurHcb->HCS_ActScb;
1562 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1563#if DEBUG_STATE
1564 printk("-s1-");
1565#endif
1566
1567 tul_unlink_pend_scb(pCurHcb, pCurScb);
1568 tul_append_busy_scb(pCurHcb, pCurScb);
1569
1570 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1571 /* ATN on */
1572 if (pCurHcb->HCS_Phase == MSG_OUT) {
1573
1574 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, (TSC_EN_BUS_IN | TSC_HW_RESELECT));
1575
1576 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
1577
1578 if (pCurScb->SCB_TagMsg) {
1579 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
1580 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
1581 }
1582 if ((pCurTcb->TCS_Flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1583
1584 pCurTcb->TCS_Flags |= TCF_WDTR_DONE;
1585
1586 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1587 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2); /* Extended msg length */
1588 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* Sync request */
1589 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* Start from 16 bits */
1590 } else if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1591
1592 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1593
1594 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1595 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* extended msg length */
1596 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */
1597 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1598 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */
1599 }
1600 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1601 if (wait_tulip(pCurHcb) == -1)
1602 return (-1);
1603 }
1604 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1605 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1606 return (3);
1607}
1608
1609
1610/***************************************************************************/
1611/* state after selection with attention */
1612/* state after selection with attention3 */
1613int tul_state_2(HCS * pCurHcb)
1614{
1615 SCB *pCurScb = pCurHcb->HCS_ActScb;
1616 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1617#if DEBUG_STATE
1618 printk("-s2-");
1619#endif
1620
1621 tul_unlink_pend_scb(pCurHcb, pCurScb);
1622 tul_append_busy_scb(pCurHcb, pCurScb);
1623
1624 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
1625
1626 if (pCurHcb->HCS_JSStatus1 & TSS_CMD_PH_CMP) {
1627 return (4);
1628 }
1629 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1630 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
1631 return (3);
1632}
1633
1634/***************************************************************************/
1635/* state before CDB xfer is done */
1636int tul_state_3(HCS * pCurHcb)
1637{
1638 SCB *pCurScb = pCurHcb->HCS_ActScb;
1639 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1640 int i;
1641
1642#if DEBUG_STATE
1643 printk("-s3-");
1644#endif
1645 for (;;) {
1646 switch (pCurHcb->HCS_Phase) {
1647 case CMD_OUT: /* Command out phase */
1648 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
1649 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
1650 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1651 if (wait_tulip(pCurHcb) == -1)
1652 return (-1);
1653 if (pCurHcb->HCS_Phase == CMD_OUT) {
1654 return (tul_bad_seq(pCurHcb));
1655 }
1656 return (4);
1657
1658 case MSG_IN: /* Message in phase */
1659 pCurScb->SCB_NxtStat = 3;
1660 if (tul_msgin(pCurHcb) == -1)
1661 return (-1);
1662 break;
1663
1664 case STATUS_IN: /* Status phase */
1665 if (tul_status_msg(pCurHcb) == -1)
1666 return (-1);
1667 break;
1668
1669 case MSG_OUT: /* Message out phase */
1670 if (pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
1671
1672 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1673 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1674 if (wait_tulip(pCurHcb) == -1)
1675 return (-1);
1676
1677 } else {
1678 pCurTcb->TCS_Flags |= TCF_SYNC_DONE;
1679
1680 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
1681 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3); /* ext. msg len */
1682 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1); /* sync request */
1683 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, tul_rate_tbl[pCurTcb->TCS_Flags & TCF_SCSI_RATE]);
1684 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MAX_OFFSET); /* REQ/ACK offset */
1685 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1686 if (wait_tulip(pCurHcb) == -1)
1687 return (-1);
1688 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1689 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7));
1690
1691 }
1692 break;
1693
1694 default:
1695 return (tul_bad_seq(pCurHcb));
1696 }
1697 }
1698}
1699
1700
1701/***************************************************************************/
1702int tul_state_4(HCS * pCurHcb)
1703{
1704 SCB *pCurScb = pCurHcb->HCS_ActScb;
1705
1706#if DEBUG_STATE
1707 printk("-s4-");
1708#endif
1709 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_NO_XF) {
1710 return (6); /* Go to state 6 */
1711 }
1712 for (;;) {
1713 if (pCurScb->SCB_BufLen == 0)
1714 return (6); /* Go to state 6 */
1715
1716 switch (pCurHcb->HCS_Phase) {
1717
1718 case STATUS_IN: /* Status phase */
1719 if ((pCurScb->SCB_Flags & SCF_DIR) != 0) { /* if direction bit set then report data underrun */
1720 pCurScb->SCB_HaStat = HOST_DO_DU;
1721 }
1722 if ((tul_status_msg(pCurHcb)) == -1)
1723 return (-1);
1724 break;
1725
1726 case MSG_IN: /* Message in phase */
1727 pCurScb->SCB_NxtStat = 0x4;
1728 if (tul_msgin(pCurHcb) == -1)
1729 return (-1);
1730 break;
1731
1732 case MSG_OUT: /* Message out phase */
1733 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1734 pCurScb->SCB_BufLen = 0;
1735 pCurScb->SCB_HaStat = HOST_DO_DU;
1736 if (tul_msgout_ide(pCurHcb) == -1)
1737 return (-1);
1738 return (6); /* Go to state 6 */
1739 } else {
1740 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1741 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1742 if (wait_tulip(pCurHcb) == -1)
1743 return (-1);
1744 }
1745 break;
1746
1747 case DATA_IN: /* Data in phase */
1748 return (tul_xfer_data_in(pCurHcb));
1749
1750 case DATA_OUT: /* Data out phase */
1751 return (tul_xfer_data_out(pCurHcb));
1752
1753 default:
1754 return (tul_bad_seq(pCurHcb));
1755 }
1756 }
1757}
1758
1759
1760/***************************************************************************/
1761/* state after dma xfer done or phase change before xfer done */
1762int tul_state_5(HCS * pCurHcb)
1763{
1764 SCB *pCurScb = pCurHcb->HCS_ActScb;
1765 long cnt, xcnt; /* cannot use unsigned !! code: if (xcnt < 0) */
1766
1767#if DEBUG_STATE
1768 printk("-s5-");
1769#endif
1770/*------ get remaining count -------*/
1771
1772 cnt = TUL_RDLONG(pCurHcb->HCS_Base, TUL_SCnt0) & 0x0FFFFFF;
1773
1774 if (TUL_RD(pCurHcb->HCS_Base, TUL_XCmd) & 0x20) {
1775 /* ----------------------- DATA_IN ----------------------------- */
1776 /* check scsi parity error */
1777 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
1778 pCurScb->SCB_HaStat = HOST_DO_DU;
1779 }
1780 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */
1781 /* tell Hardware scsi xfer has been terminated */
1782 TUL_WR(pCurHcb->HCS_Base + TUL_XCtrl, TUL_RD(pCurHcb->HCS_Base, TUL_XCtrl) | 0x80);
1783 /* wait until DMA xfer not pending */
1784 while (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND);
1785 }
1786 } else {
1787/*-------- DATA OUT -----------*/
1788 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0) {
1789 if (pCurHcb->HCS_ActTcs->TCS_JS_Period & TSC_WIDE_SCSI)
1790 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F) << 1;
1791 else
1792 cnt += (TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F);
1793 }
1794 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
1795 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT);
1796 /* wait Abort DMA xfer done */
1797 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & XABT) == 0);
1798 }
1799 if ((cnt == 1) && (pCurHcb->HCS_Phase == DATA_OUT)) {
1800 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1801 if (wait_tulip(pCurHcb) == -1) {
1802 return (-1);
1803 }
1804 cnt = 0;
1805 } else {
1806 if ((TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1) & TSS_XFER_CMP) == 0)
1807 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1808 }
1809 }
1810
1811 if (cnt == 0) {
1812 pCurScb->SCB_BufLen = 0;
1813 return (6); /* Go to state 6 */
1814 }
1815 /* Update active data pointer */
1816 xcnt = (long) pCurScb->SCB_BufLen - cnt; /* xcnt== bytes already xferred */
1817 pCurScb->SCB_BufLen = (U32) cnt; /* cnt == bytes left to be xferred */
1818 if (pCurScb->SCB_Flags & SCF_SG) {
1819 register SG *sgp;
1820 ULONG i;
1821
1822 sgp = &pCurScb->SCB_SGList[pCurScb->SCB_SGIdx];
1823 for (i = pCurScb->SCB_SGIdx; i < pCurScb->SCB_SGMax; sgp++, i++) {
1824 xcnt -= (long) sgp->SG_Len;
1825 if (xcnt < 0) { /* this sgp xfer half done */
1826 xcnt += (long) sgp->SG_Len; /* xcnt == bytes xferred in this sgp */
1827 sgp->SG_Ptr += (U32) xcnt; /* new ptr to be xfer */
1828 sgp->SG_Len -= (U32) xcnt; /* new len to be xfer */
1829 pCurScb->SCB_BufPtr += ((U32) (i - pCurScb->SCB_SGIdx) << 3);
1830 /* new SG table ptr */
1831 pCurScb->SCB_SGLen = (BYTE) (pCurScb->SCB_SGMax - i);
1832 /* new SG table len */
1833 pCurScb->SCB_SGIdx = (WORD) i;
1834 /* for next disc and come in this loop */
1835 return (4); /* Go to state 4 */
1836 }
1837 /* else (xcnt >= 0 , i.e. this sgp already xferred */
1838 } /* for */
1839 return (6); /* Go to state 6 */
1840 } else {
1841 pCurScb->SCB_BufPtr += (U32) xcnt;
1842 }
1843 return (4); /* Go to state 4 */
1844}
1845
1846/***************************************************************************/
1847/* state after Data phase */
1848int tul_state_6(HCS * pCurHcb)
1849{
1850 SCB *pCurScb = pCurHcb->HCS_ActScb;
1851
1852#if DEBUG_STATE
1853 printk("-s6-");
1854#endif
1855 for (;;) {
1856 switch (pCurHcb->HCS_Phase) {
1857 case STATUS_IN: /* Status phase */
1858 if ((tul_status_msg(pCurHcb)) == -1)
1859 return (-1);
1860 break;
1861
1862 case MSG_IN: /* Message in phase */
1863 pCurScb->SCB_NxtStat = 6;
1864 if ((tul_msgin(pCurHcb)) == -1)
1865 return (-1);
1866 break;
1867
1868 case MSG_OUT: /* Message out phase */
1869 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP); /* msg nop */
1870 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
1871 if (wait_tulip(pCurHcb) == -1)
1872 return (-1);
1873 break;
1874
1875 case DATA_IN: /* Data in phase */
1876 return (tul_xpad_in(pCurHcb));
1877
1878 case DATA_OUT: /* Data out phase */
1879 return (tul_xpad_out(pCurHcb));
1880
1881 default:
1882 return (tul_bad_seq(pCurHcb));
1883 }
1884 }
1885}
1886
1887/***************************************************************************/
1888int tul_state_7(HCS * pCurHcb)
1889{
1890 int cnt, i;
1891
1892#if DEBUG_STATE
1893 printk("-s7-");
1894#endif
1895 /* flush SCSI FIFO */
1896 cnt = TUL_RD(pCurHcb->HCS_Base, TUL_SFifoCnt) & 0x1F;
1897 if (cnt) {
1898 for (i = 0; i < cnt; i++)
1899 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1900 }
1901 switch (pCurHcb->HCS_Phase) {
1902 case DATA_IN: /* Data in phase */
1903 case DATA_OUT: /* Data out phase */
1904 return (tul_bad_seq(pCurHcb));
1905 default:
1906 return (6); /* Go to state 6 */
1907 }
1908}
1909
1910/***************************************************************************/
1911int tul_xfer_data_in(HCS * pCurHcb)
1912{
1913 SCB *pCurScb = pCurHcb->HCS_ActScb;
1914
1915 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DOUT) {
1916 return (6); /* wrong direction */
1917 }
1918 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1919
1920 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_IN); /* 7/25/95 */
1921
1922 if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */
1923 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1924 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1925 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_IN);
1926 } else {
1927 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1928 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1929 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_IN);
1930 }
1931 pCurScb->SCB_NxtStat = 0x5;
1932 return (0); /* return to OS, wait xfer done , let jas_isr come in */
1933}
1934
1935
1936/***************************************************************************/
1937int tul_xfer_data_out(HCS * pCurHcb)
1938{
1939 SCB *pCurScb = pCurHcb->HCS_ActScb;
1940
1941 if ((pCurScb->SCB_Flags & SCF_DIR) == SCF_DIN) {
1942 return (6); /* wrong direction */
1943 }
1944 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, pCurScb->SCB_BufLen);
1945 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_DMA_OUT);
1946
1947 if (pCurScb->SCB_Flags & SCF_SG) { /* S/G xfer */
1948 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, ((ULONG) pCurScb->SCB_SGLen) << 3);
1949 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1950 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_SG_OUT);
1951 } else {
1952 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XCntH, pCurScb->SCB_BufLen);
1953 TUL_WRLONG(pCurHcb->HCS_Base + TUL_XAddH, pCurScb->SCB_BufPtr);
1954 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_OUT);
1955 }
1956
1957 pCurScb->SCB_NxtStat = 0x5;
1958 return (0); /* return to OS, wait xfer done , let jas_isr come in */
1959}
1960
1961
1962/***************************************************************************/
1963int tul_xpad_in(HCS * pCurHcb)
1964{
1965 SCB *pCurScb = pCurHcb->HCS_ActScb;
1966 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1967
1968 if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1969 pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */
1970 }
1971 for (;;) {
1972 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
1973 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
1974 else
1975 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
1976
1977 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
1978 if ((wait_tulip(pCurHcb)) == -1) {
1979 return (-1);
1980 }
1981 if (pCurHcb->HCS_Phase != DATA_IN) {
1982 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
1983 return (6);
1984 }
1985 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
1986 }
1987}
1988
1989int tul_xpad_out(HCS * pCurHcb)
1990{
1991 SCB *pCurScb = pCurHcb->HCS_ActScb;
1992 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
1993
1994 if ((pCurScb->SCB_Flags & SCF_DIR) != SCF_NO_DCHK) {
1995 pCurScb->SCB_HaStat = HOST_DO_DU; /* over run */
1996 }
1997 for (;;) {
1998 if (pCurTcb->TCS_JS_Period & TSC_WIDE_SCSI)
1999 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 2);
2000 else
2001 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2002
2003 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0);
2004 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2005 if ((wait_tulip(pCurHcb)) == -1) {
2006 return (-1);
2007 }
2008 if (pCurHcb->HCS_Phase != DATA_OUT) { /* Disable wide CPU to allow read 16 bits */
2009 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT);
2010 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2011 return (6);
2012 }
2013 }
2014}
2015
2016
2017/***************************************************************************/
2018int tul_status_msg(HCS * pCurHcb)
2019{ /* status & MSG_IN */
2020 SCB *pCurScb = pCurHcb->HCS_ActScb;
2021 BYTE msg;
2022
2023 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_CMD_COMP);
2024 if ((wait_tulip(pCurHcb)) == -1) {
2025 return (-1);
2026 }
2027 /* get status */
2028 pCurScb->SCB_TaStat = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2029
2030 if (pCurHcb->HCS_Phase == MSG_OUT) {
2031 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) {
2032 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2033 } else {
2034 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_NOP);
2035 }
2036 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2037 return (wait_tulip(pCurHcb));
2038 }
2039 if (pCurHcb->HCS_Phase == MSG_IN) {
2040 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2041 if (pCurHcb->HCS_JSStatus0 & TSS_PAR_ERROR) { /* Parity error */
2042 if ((tul_msgin_accept(pCurHcb)) == -1)
2043 return (-1);
2044 if (pCurHcb->HCS_Phase != MSG_OUT)
2045 return (tul_bad_seq(pCurHcb));
2046 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_PARITY);
2047 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2048 return (wait_tulip(pCurHcb));
2049 }
2050 if (msg == 0) { /* Command complete */
2051
2052 if ((pCurScb->SCB_TaStat & 0x18) == 0x10) { /* No link support */
2053 return (tul_bad_seq(pCurHcb));
2054 }
2055 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2056 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2057 return tul_wait_done_disc(pCurHcb);
2058
2059 }
2060 if ((msg == MSG_LINK_COMP) || (msg == MSG_LINK_FLAG)) {
2061 if ((pCurScb->SCB_TaStat & 0x18) == 0x10)
2062 return (tul_msgin_accept(pCurHcb));
2063 }
2064 }
2065 return (tul_bad_seq(pCurHcb));
2066}
2067
2068
2069/***************************************************************************/
2070/* scsi bus free */
2071int int_tul_busfree(HCS * pCurHcb)
2072{
2073 SCB *pCurScb = pCurHcb->HCS_ActScb;
2074
2075 if (pCurScb != NULL) {
2076 if (pCurScb->SCB_Status & SCB_SELECT) { /* selection timeout */
2077 tul_unlink_pend_scb(pCurHcb, pCurScb);
2078 pCurScb->SCB_HaStat = HOST_SEL_TOUT;
2079 tul_append_done_scb(pCurHcb, pCurScb);
2080 } else { /* Unexpected bus free */
2081 tul_unlink_busy_scb(pCurHcb, pCurScb);
2082 pCurScb->SCB_HaStat = HOST_BUS_FREE;
2083 tul_append_done_scb(pCurHcb, pCurScb);
2084 }
2085 pCurHcb->HCS_ActScb = NULL;
2086 pCurHcb->HCS_ActTcs = NULL;
2087 }
2088 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2089 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2090 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2091 return (-1);
2092}
2093
2094
2095/***************************************************************************/
2096/* scsi bus reset */
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]2097static int int_tul_scsi_rst(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2098{
2099 SCB *pCurScb;
2100 int i;
2101
2102 /* if DMA xfer is pending, abort DMA xfer */
2103 if (TUL_RD(pCurHcb->HCS_Base, TUL_XStatus) & 0x01) {
2104 TUL_WR(pCurHcb->HCS_Base + TUL_XCmd, TAX_X_ABT | TAX_X_CLR_FIFO);
2105 /* wait Abort DMA xfer done */
2106 while ((TUL_RD(pCurHcb->HCS_Base, TUL_Int) & 0x04) == 0);
2107 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2108 }
2109 /* Abort all active & disconnected scb */
2110 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2111 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2112 tul_append_done_scb(pCurHcb, pCurScb);
2113 }
2114 pCurHcb->HCS_ActScb = NULL;
2115 pCurHcb->HCS_ActTcs = NULL;
2116
2117 /* clr sync nego. done flag */
2118 for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2119 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2120 }
2121 return (-1);
2122}
2123
2124
2125/***************************************************************************/
2126/* scsi reselection */
2127int int_tul_resel(HCS * pCurHcb)
2128{
2129 SCB *pCurScb;
2130 TCS *pCurTcb;
2131 BYTE tag, msg = 0;
2132 BYTE tar, lun;
2133
2134 if ((pCurScb = pCurHcb->HCS_ActScb) != NULL) {
2135 if (pCurScb->SCB_Status & SCB_SELECT) { /* if waiting for selection complete */
2136 pCurScb->SCB_Status &= ~SCB_SELECT;
2137 }
2138 pCurHcb->HCS_ActScb = NULL;
2139 }
2140 /* --------- get target id---------------------- */
2141 tar = TUL_RD(pCurHcb->HCS_Base, TUL_SBusId);
2142 /* ------ get LUN from Identify message----------- */
2143 lun = TUL_RD(pCurHcb->HCS_Base, TUL_SIdent) & 0x0F;
2144 /* 07/22/98 from 0x1F -> 0x0F */
2145 pCurTcb = &pCurHcb->HCS_Tcs[tar];
2146 pCurHcb->HCS_ActTcs = pCurTcb;
2147 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurTcb->TCS_SConfig0);
2148 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurTcb->TCS_JS_Period);
2149
2150
2151 /* ------------- tag queueing ? ------------------- */
2152 if (pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG) {
2153 if ((tul_msgin_accept(pCurHcb)) == -1)
2154 return (-1);
2155 if (pCurHcb->HCS_Phase != MSG_IN)
2156 goto no_tag;
2157 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2158 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2159 if ((wait_tulip(pCurHcb)) == -1)
2160 return (-1);
2161 msg = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag Message */
2162
2163 if ((msg < MSG_STAG) || (msg > MSG_OTAG)) /* Is simple Tag */
2164 goto no_tag;
2165
2166 if ((tul_msgin_accept(pCurHcb)) == -1)
2167 return (-1);
2168
2169 if (pCurHcb->HCS_Phase != MSG_IN)
2170 goto no_tag;
2171
2172 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2173 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2174 if ((wait_tulip(pCurHcb)) == -1)
2175 return (-1);
2176 tag = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* Read Tag ID */
2177 pCurScb = pCurHcb->HCS_Scb + tag;
2178 if ((pCurScb->SCB_Target != tar) || (pCurScb->SCB_Lun != lun)) {
2179 return tul_msgout_abort_tag(pCurHcb);
2180 }
2181 if (pCurScb->SCB_Status != SCB_BUSY) { /* 03/24/95 */
2182 return tul_msgout_abort_tag(pCurHcb);
2183 }
2184 pCurHcb->HCS_ActScb = pCurScb;
2185 if ((tul_msgin_accept(pCurHcb)) == -1)
2186 return (-1);
2187 } else { /* No tag */
2188 no_tag:
2189 if ((pCurScb = tul_find_busy_scb(pCurHcb, tar | (lun << 8))) == NULL) {
2190 return tul_msgout_abort_targ(pCurHcb);
2191 }
2192 pCurHcb->HCS_ActScb = pCurScb;
2193 if (!(pCurTcb->TCS_DrvFlags & TCF_DRV_EN_TAG)) {
2194 if ((tul_msgin_accept(pCurHcb)) == -1)
2195 return (-1);
2196 }
2197 }
2198 return 0;
2199}
2200
2201
2202/***************************************************************************/
Adrian Bunka2ba1922005-06-25 14:58:50 -0700[diff] [blame]2203static int int_tul_bad_seq(HCS * pCurHcb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2204{ /* target wrong phase */
2205 SCB *pCurScb;
2206 int i;
2207
2208 tul_reset_scsi(pCurHcb, 10);
2209
2210 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2211 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2212 tul_append_done_scb(pCurHcb, pCurScb);
2213 }
2214 for (i = 0; i < pCurHcb->HCS_MaxTar; i++) {
2215 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2216 }
2217 return (-1);
2218}
2219
2220
2221/***************************************************************************/
2222int tul_msgout_abort_targ(HCS * pCurHcb)
2223{
2224
2225 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2226 if (tul_msgin_accept(pCurHcb) == -1)
2227 return (-1);
2228 if (pCurHcb->HCS_Phase != MSG_OUT)
2229 return (tul_bad_seq(pCurHcb));
2230
2231 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT);
2232 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2233
2234 return tul_wait_disc(pCurHcb);
2235}
2236
2237/***************************************************************************/
2238int tul_msgout_abort_tag(HCS * pCurHcb)
2239{
2240
2241 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2242 if (tul_msgin_accept(pCurHcb) == -1)
2243 return (-1);
2244 if (pCurHcb->HCS_Phase != MSG_OUT)
2245 return (tul_bad_seq(pCurHcb));
2246
2247 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_ABORT_TAG);
2248 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2249
2250 return tul_wait_disc(pCurHcb);
2251
2252}
2253
2254/***************************************************************************/
2255int tul_msgin(HCS * pCurHcb)
2256{
2257 TCS *pCurTcb;
2258
2259 for (;;) {
2260
2261 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2262
2263 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2264 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2265 if ((wait_tulip(pCurHcb)) == -1)
2266 return (-1);
2267
2268 switch (TUL_RD(pCurHcb->HCS_Base, TUL_SFifo)) {
2269 case MSG_DISC: /* Disconnect msg */
2270 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2271
2272 return tul_wait_disc(pCurHcb);
2273
2274 case MSG_SDP:
2275 case MSG_RESTORE:
2276 case MSG_NOP:
2277 tul_msgin_accept(pCurHcb);
2278 break;
2279
2280 case MSG_REJ: /* Clear ATN first */
2281 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal,
2282 (TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)));
2283 pCurTcb = pCurHcb->HCS_ActTcs;
2284 if ((pCurTcb->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync nego */
2285 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2286 }
2287 tul_msgin_accept(pCurHcb);
2288 break;
2289
2290 case MSG_EXTEND: /* extended msg */
2291 tul_msgin_extend(pCurHcb);
2292 break;
2293
2294 case MSG_IGNOREWIDE:
2295 tul_msgin_accept(pCurHcb);
2296 break;
2297
2298 /* get */
2299 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2300 if (wait_tulip(pCurHcb) == -1)
2301 return -1;
2302
2303 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 0); /* put pad */
2304 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get IGNORE field */
2305 TUL_RD(pCurHcb->HCS_Base, TUL_SFifo); /* get pad */
2306
2307 tul_msgin_accept(pCurHcb);
2308 break;
2309
2310 case MSG_COMP:
2311 {
2312 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2313 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2314 return tul_wait_done_disc(pCurHcb);
2315 }
2316 default:
2317 tul_msgout_reject(pCurHcb);
2318 break;
2319 }
2320 if (pCurHcb->HCS_Phase != MSG_IN)
2321 return (pCurHcb->HCS_Phase);
2322 }
2323 /* statement won't reach here */
2324}
2325
2326
2327
2328
2329/***************************************************************************/
2330int tul_msgout_reject(HCS * pCurHcb)
2331{
2332
2333 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2334
2335 if ((tul_msgin_accept(pCurHcb)) == -1)
2336 return (-1);
2337
2338 if (pCurHcb->HCS_Phase == MSG_OUT) {
2339 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_REJ); /* Msg reject */
2340 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2341 return (wait_tulip(pCurHcb));
2342 }
2343 return (pCurHcb->HCS_Phase);
2344}
2345
2346
2347
2348/***************************************************************************/
2349int tul_msgout_ide(HCS * pCurHcb)
2350{
2351 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_IDE); /* Initiator Detected Error */
2352 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2353 return (wait_tulip(pCurHcb));
2354}
2355
2356
2357/***************************************************************************/
2358int tul_msgin_extend(HCS * pCurHcb)
2359{
2360 BYTE len, idx;
2361
2362 if (tul_msgin_accept(pCurHcb) != MSG_IN)
2363 return (pCurHcb->HCS_Phase);
2364
2365 /* Get extended msg length */
2366 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2367 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2368 if (wait_tulip(pCurHcb) == -1)
2369 return (-1);
2370
2371 len = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2372 pCurHcb->HCS_Msg[0] = len;
2373 for (idx = 1; len != 0; len--) {
2374
2375 if ((tul_msgin_accept(pCurHcb)) != MSG_IN)
2376 return (pCurHcb->HCS_Phase);
2377 TUL_WRLONG(pCurHcb->HCS_Base + TUL_SCnt0, 1);
2378 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_IN);
2379 if (wait_tulip(pCurHcb) == -1)
2380 return (-1);
2381 pCurHcb->HCS_Msg[idx++] = TUL_RD(pCurHcb->HCS_Base, TUL_SFifo);
2382 }
2383 if (pCurHcb->HCS_Msg[1] == 1) { /* if it's synchronous data transfer request */
2384 if (pCurHcb->HCS_Msg[0] != 3) /* if length is not right */
2385 return (tul_msgout_reject(pCurHcb));
2386 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_SYNC_NEGO) { /* Set OFFSET=0 to do async, nego back */
2387 pCurHcb->HCS_Msg[3] = 0;
2388 } else {
2389 if ((tul_msgin_sync(pCurHcb) == 0) &&
2390 (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SYNC_DONE)) {
2391 tul_sync_done(pCurHcb);
2392 return (tul_msgin_accept(pCurHcb));
2393 }
2394 }
2395
2396 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2397 if ((tul_msgin_accept(pCurHcb)) != MSG_OUT)
2398 return (pCurHcb->HCS_Phase);
2399 /* sync msg out */
2400 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO);
2401
2402 tul_sync_done(pCurHcb);
2403
2404 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2405 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2406 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 1);
2407 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2408 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[3]);
2409
2410 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2411 return (wait_tulip(pCurHcb));
2412 }
2413 if ((pCurHcb->HCS_Msg[0] != 2) || (pCurHcb->HCS_Msg[1] != 3))
2414 return (tul_msgout_reject(pCurHcb));
2415 /* if it's WIDE DATA XFER REQ */
2416 if (pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) {
2417 pCurHcb->HCS_Msg[2] = 0;
2418 } else {
2419 if (pCurHcb->HCS_Msg[2] > 2) /* > 32 bits */
2420 return (tul_msgout_reject(pCurHcb));
2421 if (pCurHcb->HCS_Msg[2] == 2) { /* == 32 */
2422 pCurHcb->HCS_Msg[2] = 1;
2423 } else {
2424 if ((pCurHcb->HCS_ActTcs->TCS_Flags & TCF_NO_WDTR) == 0) {
2425 wdtr_done(pCurHcb);
2426 if ((pCurHcb->HCS_ActTcs->TCS_Flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2427 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2428 return (tul_msgin_accept(pCurHcb));
2429 }
2430 }
2431 }
2432 TUL_WR(pCurHcb->HCS_Base + TUL_SSignal, ((TUL_RD(pCurHcb->HCS_Base, TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN));
2433
2434 if (tul_msgin_accept(pCurHcb) != MSG_OUT)
2435 return (pCurHcb->HCS_Phase);
2436 /* WDTR msg out */
2437 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_EXTEND);
2438 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 2);
2439 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, 3);
2440 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurHcb->HCS_Msg[2]);
2441 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2442 return (wait_tulip(pCurHcb));
2443}
2444
2445/***************************************************************************/
2446int tul_msgin_sync(HCS * pCurHcb)
2447{
2448 char default_period;
2449
2450 default_period = tul_rate_tbl[pCurHcb->HCS_ActTcs->TCS_Flags & TCF_SCSI_RATE];
2451 if (pCurHcb->HCS_Msg[3] > MAX_OFFSET) {
2452 pCurHcb->HCS_Msg[3] = MAX_OFFSET;
2453 if (pCurHcb->HCS_Msg[2] < default_period) {
2454 pCurHcb->HCS_Msg[2] = default_period;
2455 return 1;
2456 }
2457 if (pCurHcb->HCS_Msg[2] >= 59) { /* Change to async */
2458 pCurHcb->HCS_Msg[3] = 0;
2459 }
2460 return 1;
2461 }
2462 /* offset requests asynchronous transfers ? */
2463 if (pCurHcb->HCS_Msg[3] == 0) {
2464 return 0;
2465 }
2466 if (pCurHcb->HCS_Msg[2] < default_period) {
2467 pCurHcb->HCS_Msg[2] = default_period;
2468 return 1;
2469 }
2470 if (pCurHcb->HCS_Msg[2] >= 59) {
2471 pCurHcb->HCS_Msg[3] = 0;
2472 return 1;
2473 }
2474 return 0;
2475}
2476
2477
2478/***************************************************************************/
2479int wdtr_done(HCS * pCurHcb)
2480{
2481 pCurHcb->HCS_ActTcs->TCS_Flags &= ~TCF_SYNC_DONE;
2482 pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_WDTR_DONE;
2483
2484 pCurHcb->HCS_ActTcs->TCS_JS_Period = 0;
2485 if (pCurHcb->HCS_Msg[2]) { /* if 16 bit */
2486 pCurHcb->HCS_ActTcs->TCS_JS_Period |= TSC_WIDE_SCSI;
2487 }
2488 pCurHcb->HCS_ActTcs->TCS_SConfig0 &= ~TSC_ALT_PERIOD;
2489 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2490 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2491
2492 return 1;
2493}
2494
2495/***************************************************************************/
2496int tul_sync_done(HCS * pCurHcb)
2497{
2498 int i;
2499
2500 pCurHcb->HCS_ActTcs->TCS_Flags |= TCF_SYNC_DONE;
2501
2502 if (pCurHcb->HCS_Msg[3]) {
2503 pCurHcb->HCS_ActTcs->TCS_JS_Period |= pCurHcb->HCS_Msg[3];
2504 for (i = 0; i < 8; i++) {
2505 if (tul_rate_tbl[i] >= pCurHcb->HCS_Msg[2]) /* pick the big one */
2506 break;
2507 }
2508 pCurHcb->HCS_ActTcs->TCS_JS_Period |= (i << 4);
2509 pCurHcb->HCS_ActTcs->TCS_SConfig0 |= TSC_ALT_PERIOD;
2510 }
2511 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, pCurHcb->HCS_ActTcs->TCS_SConfig0);
2512 TUL_WR(pCurHcb->HCS_Base + TUL_SPeriod, pCurHcb->HCS_ActTcs->TCS_JS_Period);
2513
2514 return (-1);
2515}
2516
2517
2518int tul_post_scsi_rst(HCS * pCurHcb)
2519{
2520 SCB *pCurScb;
2521 TCS *pCurTcb;
2522 int i;
2523
2524 pCurHcb->HCS_ActScb = NULL;
2525 pCurHcb->HCS_ActTcs = NULL;
2526 pCurHcb->HCS_Flags = 0;
2527
2528 while ((pCurScb = tul_pop_busy_scb(pCurHcb)) != NULL) {
2529 pCurScb->SCB_HaStat = HOST_BAD_PHAS;
2530 tul_append_done_scb(pCurHcb, pCurScb);
2531 }
2532 /* clear sync done flag */
2533 pCurTcb = &pCurHcb->HCS_Tcs[0];
2534 for (i = 0; i < pCurHcb->HCS_MaxTar; pCurTcb++, i++) {
2535 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
2536 /* Initialize the sync. xfer register values to an asyn xfer */
2537 pCurTcb->TCS_JS_Period = 0;
2538 pCurTcb->TCS_SConfig0 = pCurHcb->HCS_SConf1;
2539 pCurHcb->HCS_ActTags[0] = 0; /* 07/22/98 */
2540 pCurHcb->HCS_Tcs[i].TCS_Flags &= ~TCF_BUSY; /* 07/22/98 */
2541 } /* for */
2542
2543 return (-1);
2544}
2545
2546/***************************************************************************/
2547void tul_select_atn_stop(HCS * pCurHcb, SCB * pCurScb)
2548{
2549 pCurScb->SCB_Status |= SCB_SELECT;
2550 pCurScb->SCB_NxtStat = 0x1;
2551 pCurHcb->HCS_ActScb = pCurScb;
2552 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2553 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SELATNSTOP);
2554 return;
2555}
2556
2557
2558/***************************************************************************/
2559void tul_select_atn(HCS * pCurHcb, SCB * pCurScb)
2560{
2561 int i;
2562
2563 pCurScb->SCB_Status |= SCB_SELECT;
2564 pCurScb->SCB_NxtStat = 0x2;
2565
2566 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2567 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2568 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2569 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2570 pCurHcb->HCS_ActScb = pCurScb;
2571 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN);
2572 return;
2573}
2574
2575/***************************************************************************/
2576void tul_select_atn3(HCS * pCurHcb, SCB * pCurScb)
2577{
2578 int i;
2579
2580 pCurScb->SCB_Status |= SCB_SELECT;
2581 pCurScb->SCB_NxtStat = 0x2;
2582
2583 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_Ident);
2584 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagMsg);
2585 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_TagId);
2586 for (i = 0; i < (int) pCurScb->SCB_CDBLen; i++)
2587 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, pCurScb->SCB_CDB[i]);
2588 pCurHcb->HCS_ActTcs = &pCurHcb->HCS_Tcs[pCurScb->SCB_Target];
2589 pCurHcb->HCS_ActScb = pCurScb;
2590 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_SEL_ATN3);
2591 return;
2592}
2593
2594/***************************************************************************/
2595/* SCSI Bus Device Reset */
2596int tul_bus_device_reset(HCS * pCurHcb)
2597{
2598 SCB *pCurScb = pCurHcb->HCS_ActScb;
2599 TCS *pCurTcb = pCurHcb->HCS_ActTcs;
2600 SCB *pTmpScb, *pPrevScb;
2601 BYTE tar;
2602
2603 if (pCurHcb->HCS_Phase != MSG_OUT) {
2604 return (int_tul_bad_seq(pCurHcb)); /* Unexpected phase */
2605 }
2606 tul_unlink_pend_scb(pCurHcb, pCurScb);
2607 tul_release_scb(pCurHcb, pCurScb);
2608
2609
2610 tar = pCurScb->SCB_Target; /* target */
2611 pCurTcb->TCS_Flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
2612 /* clr sync. nego & WDTR flags 07/22/98 */
2613
2614 /* abort all SCB with same target */
2615 pPrevScb = pTmpScb = pCurHcb->HCS_FirstBusy; /* Check Busy queue */
2616 while (pTmpScb != NULL) {
2617
2618 if (pTmpScb->SCB_Target == tar) {
2619 /* unlink it */
2620 if (pTmpScb == pCurHcb->HCS_FirstBusy) {
2621 if ((pCurHcb->HCS_FirstBusy = pTmpScb->SCB_NxtScb) == NULL)
2622 pCurHcb->HCS_LastBusy = NULL;
2623 } else {
2624 pPrevScb->SCB_NxtScb = pTmpScb->SCB_NxtScb;
2625 if (pTmpScb == pCurHcb->HCS_LastBusy)
2626 pCurHcb->HCS_LastBusy = pPrevScb;
2627 }
2628 pTmpScb->SCB_HaStat = HOST_ABORTED;
2629 tul_append_done_scb(pCurHcb, pTmpScb);
2630 }
2631 /* Previous haven't change */
2632 else {
2633 pPrevScb = pTmpScb;
2634 }
2635 pTmpScb = pTmpScb->SCB_NxtScb;
2636 }
2637
2638 TUL_WR(pCurHcb->HCS_Base + TUL_SFifo, MSG_DEVRST);
2639 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_XF_FIFO_OUT);
2640
2641 return tul_wait_disc(pCurHcb);
2642
2643}
2644
2645/***************************************************************************/
2646int tul_msgin_accept(HCS * pCurHcb)
2647{
2648 TUL_WR(pCurHcb->HCS_Base + TUL_SCmd, TSC_MSG_ACCEPT);
2649 return (wait_tulip(pCurHcb));
2650}
2651
2652/***************************************************************************/
2653int wait_tulip(HCS * pCurHcb)
2654{
2655
2656 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2657 & TSS_INT_PENDING));
2658
2659 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2660 pCurHcb->HCS_Phase = pCurHcb->HCS_JSStatus0 & TSS_PH_MASK;
2661 pCurHcb->HCS_JSStatus1 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus1);
2662
2663 if (pCurHcb->HCS_JSInt & TSS_RESEL_INT) { /* if SCSI bus reset detected */
2664 return (int_tul_resel(pCurHcb));
2665 }
2666 if (pCurHcb->HCS_JSInt & TSS_SEL_TIMEOUT) { /* if selected/reselected timeout interrupt */
2667 return (int_tul_busfree(pCurHcb));
2668 }
2669 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2670 return (int_tul_scsi_rst(pCurHcb));
2671 }
2672 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2673 if (pCurHcb->HCS_Flags & HCF_EXPECT_DONE_DISC) {
2674 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2675 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2676 pCurHcb->HCS_ActScb->SCB_HaStat = 0;
2677 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2678 pCurHcb->HCS_ActScb = NULL;
2679 pCurHcb->HCS_ActTcs = NULL;
2680 pCurHcb->HCS_Flags &= ~HCF_EXPECT_DONE_DISC;
2681 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2682 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2683 return (-1);
2684 }
2685 if (pCurHcb->HCS_Flags & HCF_EXPECT_DISC) {
2686 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2687 pCurHcb->HCS_ActScb = NULL;
2688 pCurHcb->HCS_ActTcs = NULL;
2689 pCurHcb->HCS_Flags &= ~HCF_EXPECT_DISC;
2690 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2691 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2692 return (-1);
2693 }
2694 return (int_tul_busfree(pCurHcb));
2695 }
2696 if (pCurHcb->HCS_JSInt & (TSS_FUNC_COMP | TSS_BUS_SERV)) {
2697 return (pCurHcb->HCS_Phase);
2698 }
2699 return (pCurHcb->HCS_Phase);
2700}
2701/***************************************************************************/
2702int tul_wait_disc(HCS * pCurHcb)
2703{
2704
2705 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2706 & TSS_INT_PENDING));
2707
2708
2709 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2710
2711 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2712 return (int_tul_scsi_rst(pCurHcb));
2713 }
2714 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2715 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2716 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2717 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2718 pCurHcb->HCS_ActScb = NULL;
2719 return (-1);
2720 }
2721 return (tul_bad_seq(pCurHcb));
2722}
2723
2724/***************************************************************************/
2725int tul_wait_done_disc(HCS * pCurHcb)
2726{
2727
2728
2729 while (!((pCurHcb->HCS_JSStatus0 = TUL_RD(pCurHcb->HCS_Base, TUL_SStatus0))
2730 & TSS_INT_PENDING));
2731
2732 pCurHcb->HCS_JSInt = TUL_RD(pCurHcb->HCS_Base, TUL_SInt);
2733
2734
2735 if (pCurHcb->HCS_JSInt & TSS_SCSIRST_INT) { /* if SCSI bus reset detected */
2736 return (int_tul_scsi_rst(pCurHcb));
2737 }
2738 if (pCurHcb->HCS_JSInt & TSS_DISC_INT) { /* BUS disconnection */
2739 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl0, TSC_FLUSH_FIFO); /* Flush SCSI FIFO */
2740 TUL_WR(pCurHcb->HCS_Base + TUL_SConfig, TSC_INITDEFAULT);
2741 TUL_WR(pCurHcb->HCS_Base + TUL_SCtrl1, TSC_HW_RESELECT); /* Enable HW reselect */
2742 tul_unlink_busy_scb(pCurHcb, pCurHcb->HCS_ActScb);
2743
2744 tul_append_done_scb(pCurHcb, pCurHcb->HCS_ActScb);
2745 pCurHcb->HCS_ActScb = NULL;
2746 return (-1);
2747 }
2748 return (tul_bad_seq(pCurHcb));
2749}
2750
2751static irqreturn_t i91u_intr(int irqno, void *dev_id, struct pt_regs *regs)
2752{
2753 struct Scsi_Host *dev = dev_id;
2754 unsigned long flags;
2755
2756 spin_lock_irqsave(dev->host_lock, flags);
2757 tul_isr((HCS *)dev->base);
2758 spin_unlock_irqrestore(dev->host_lock, flags);
2759 return IRQ_HANDLED;
2760}
2761
2762static int tul_NewReturnNumberOfAdapters(void)
2763{
2764 struct pci_dev *pDev = NULL; /* Start from none */
2765 int iAdapters = 0;
2766 long dRegValue;
2767 WORD wBIOS;
2768 int i = 0;
2769
2770 init_i91uAdapter_table();
2771
Tobias Klauser6391a112006-06-08 22:23:48 -0700[diff] [blame]2772 for (i = 0; i < ARRAY_SIZE(i91u_pci_devices); i++)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2773 {
2774 while ((pDev = pci_find_device(i91u_pci_devices[i].vendor_id, i91u_pci_devices[i].device_id, pDev)) != NULL) {
2775 if (pci_enable_device(pDev))
2776 continue;
2777 pci_read_config_dword(pDev, 0x44, (u32 *) & dRegValue);
2778 wBIOS = (UWORD) (dRegValue & 0xFF);
2779 if (((dRegValue & 0xFF00) >> 8) == 0xFF)
2780 dRegValue = 0;
2781 wBIOS = (wBIOS << 8) + ((UWORD) ((dRegValue & 0xFF00) >> 8));
Matthias Gehre910638a2006-03-28 01:56:48 -0800[diff] [blame]2782 if (pci_set_dma_mask(pDev, DMA_32BIT_MASK)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2783 printk(KERN_WARNING
2784 "i91u: Could not set 32 bit DMA mask\n");
2785 continue;
2786 }
2787
2788 if (Addi91u_into_Adapter_table(wBIOS,
2789 (pDev->resource[0].start),
2790 pDev->irq,
2791 pDev->bus->number,
2792 (pDev->devfn >> 3)
2793 ) == 0)
2794 iAdapters++;
2795 }
2796 }
2797
2798 return (iAdapters);
2799}
2800
2801static int i91u_detect(struct scsi_host_template * tpnt)
2802{
2803 HCS *pHCB;
2804 struct Scsi_Host *hreg;
2805 unsigned long i; /* 01/14/98 */
2806 int ok = 0, iAdapters;
2807 ULONG dBiosAdr;
2808 BYTE *pbBiosAdr;
2809
2810 /* Get total number of adapters in the motherboard */
2811 iAdapters = tul_NewReturnNumberOfAdapters();
2812 if (iAdapters == 0) /* If no tulip founded, return */
2813 return (0);
2814
2815 tul_num_ch = (iAdapters > tul_num_ch) ? tul_num_ch : iAdapters;
2816 /* Update actually channel number */
2817 if (tul_tag_enable) { /* 1.01i */
2818 tul_num_scb = MAX_TARGETS * i91u_MAXQUEUE;
2819 } else {
2820 tul_num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */
2821 } /* Update actually SCBs per adapter */
2822
2823 /* Get total memory needed for HCS */
2824 i = tul_num_ch * sizeof(HCS);
2825 memset((unsigned char *) &tul_hcs[0], 0, i); /* Initialize tul_hcs 0 */
2826 /* Get total memory needed for SCB */
2827
2828 for (; tul_num_scb >= MAX_TARGETS + 3; tul_num_scb--) {
2829 i = tul_num_ch * tul_num_scb * sizeof(SCB);
2830 if ((tul_scb = (SCB *) kmalloc(i, GFP_ATOMIC | GFP_DMA)) != NULL)
2831 break;
2832 }
2833 if (tul_scb == NULL) {
2834 printk("i91u: SCB memory allocation error\n");
2835 return (0);
2836 }
2837 memset((unsigned char *) tul_scb, 0, i);
2838
2839 for (i = 0, pHCB = &tul_hcs[0]; /* Get pointer for control block */
2840 i < tul_num_ch;
2841 i++, pHCB++) {
2842 get_tulipPCIConfig(pHCB, i);
2843
2844 dBiosAdr = pHCB->HCS_BIOS;
2845 dBiosAdr = (dBiosAdr << 4);
2846
2847 pbBiosAdr = phys_to_virt(dBiosAdr);
2848
2849 init_tulip(pHCB, tul_scb + (i * tul_num_scb), tul_num_scb, pbBiosAdr, 10);
2850 request_region(pHCB->HCS_Base, 256, "i91u"); /* Register */
2851
2852 pHCB->HCS_Index = i; /* 7/29/98 */
2853 hreg = scsi_register(tpnt, sizeof(HCS));
2854 if(hreg == NULL) {
2855 release_region(pHCB->HCS_Base, 256);
2856 return 0;
2857 }
2858 hreg->io_port = pHCB->HCS_Base;
2859 hreg->n_io_port = 0xff;
2860 hreg->can_queue = tul_num_scb; /* 03/05/98 */
2861 hreg->unique_id = pHCB->HCS_Base;
2862 hreg->max_id = pHCB->HCS_MaxTar;
2863 hreg->max_lun = 32; /* 10/21/97 */
2864 hreg->irq = pHCB->HCS_Intr;
2865 hreg->this_id = pHCB->HCS_SCSI_ID; /* Assign HCS index */
2866 hreg->base = (unsigned long)pHCB;
2867 hreg->sg_tablesize = TOTAL_SG_ENTRY; /* Maximun support is 32 */
2868
2869 /* Initial tulip chip */
Thomas Gleixner1d6f3592006-07-01 19:29:42 -0700[diff] [blame]2870 ok = request_irq(pHCB->HCS_Intr, i91u_intr, IRQF_DISABLED | IRQF_SHARED, "i91u", hreg);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]2871 if (ok < 0) {
2872 printk(KERN_WARNING "i91u: unable to request IRQ %d\n\n", pHCB->HCS_Intr);
2873 return 0;
2874 }
2875 }
2876
2877 tpnt->this_id = -1;
2878 tpnt->can_queue = 1;
2879
2880 return 1;
2881}
2882
2883static void i91uBuildSCB(HCS * pHCB, SCB * pSCB, struct scsi_cmnd * SCpnt)
2884{ /* Create corresponding SCB */
2885 struct scatterlist *pSrbSG;
2886 SG *pSG; /* Pointer to SG list */
2887 int i;
2888 long TotalLen;
2889 dma_addr_t dma_addr;
2890
2891 pSCB->SCB_Post = i91uSCBPost; /* i91u's callback routine */
2892 pSCB->SCB_Srb = SCpnt;
2893 pSCB->SCB_Opcode = ExecSCSI;
2894 pSCB->SCB_Flags = SCF_POST; /* After SCSI done, call post routine */
2895 pSCB->SCB_Target = SCpnt->device->id;
2896 pSCB->SCB_Lun = SCpnt->device->lun;
2897 pSCB->SCB_Ident = SCpnt->device->lun | DISC_ALLOW;
2898
2899 pSCB->SCB_Flags |= SCF_SENSE; /* Turn on auto request sense */
2900 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->sense_buffer,
2901 SENSE_SIZE, DMA_FROM_DEVICE);
2902 pSCB->SCB_SensePtr = cpu_to_le32((u32)dma_addr);
2903 pSCB->SCB_SenseLen = cpu_to_le32(SENSE_SIZE);
2904 SCpnt->SCp.ptr = (char *)(unsigned long)dma_addr;
2905
2906 pSCB->SCB_CDBLen = SCpnt->cmd_len;
2907 pSCB->SCB_HaStat = 0;
2908 pSCB->SCB_TaStat = 0;
2909 memcpy(&pSCB->SCB_CDB[0], &SCpnt->cmnd, SCpnt->cmd_len);
2910
2911 if (SCpnt->device->tagged_supported) { /* Tag Support */
2912 pSCB->SCB_TagMsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */
2913 } else {
2914 pSCB->SCB_TagMsg = 0; /* No tag support */
2915 }
2916 /* todo handle map_sg error */
2917 if (SCpnt->use_sg) {
2918 dma_addr = dma_map_single(&pHCB->pci_dev->dev, &pSCB->SCB_SGList[0],
2919 sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
2920 DMA_BIDIRECTIONAL);
2921 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2922 SCpnt->SCp.dma_handle = dma_addr;
2923
2924 pSrbSG = (struct scatterlist *) SCpnt->request_buffer;
2925 pSCB->SCB_SGLen = dma_map_sg(&pHCB->pci_dev->dev, pSrbSG,
2926 SCpnt->use_sg, SCpnt->sc_data_direction);
2927
2928 pSCB->SCB_Flags |= SCF_SG; /* Turn on SG list flag */
2929 for (i = 0, TotalLen = 0, pSG = &pSCB->SCB_SGList[0]; /* 1.01g */
2930 i < pSCB->SCB_SGLen; i++, pSG++, pSrbSG++) {
2931 pSG->SG_Ptr = cpu_to_le32((u32)sg_dma_address(pSrbSG));
2932 TotalLen += pSG->SG_Len = cpu_to_le32((u32)sg_dma_len(pSrbSG));
2933 }
2934
2935 pSCB->SCB_BufLen = (SCpnt->request_bufflen > TotalLen) ?
2936 TotalLen : SCpnt->request_bufflen;
2937 } else if (SCpnt->request_bufflen) { /* Non SG */
2938 dma_addr = dma_map_single(&pHCB->pci_dev->dev, SCpnt->request_buffer,
2939 SCpnt->request_bufflen,
2940 SCpnt->sc_data_direction);
2941 SCpnt->SCp.dma_handle = dma_addr;
2942 pSCB->SCB_BufPtr = cpu_to_le32((u32)dma_addr);
2943 pSCB->SCB_BufLen = cpu_to_le32((u32)SCpnt->request_bufflen);
2944 pSCB->SCB_SGLen = 0;
2945 } else {
2946 pSCB->SCB_BufLen = 0;
2947 pSCB->SCB_SGLen = 0;
2948 }
2949}
2950
2951static int i91u_queuecommand(struct scsi_cmnd *cmd,
2952 void (*done)(struct scsi_cmnd *))
2953{
2954 HCS *pHCB = (HCS *) cmd->device->host->base;
2955 register SCB *pSCB;
2956
2957 cmd->scsi_done = done;
2958
2959 pSCB = tul_alloc_scb(pHCB);
2960 if (!pSCB)
2961 return SCSI_MLQUEUE_HOST_BUSY;
2962
2963 i91uBuildSCB(pHCB, pSCB, cmd);
2964 tul_exec_scb(pHCB, pSCB);
2965 return 0;
2966}
2967
2968#if 0 /* no new EH yet */
2969/*
2970 * Abort a queued command
2971 * (commands that are on the bus can't be aborted easily)
2972 */
2973static int i91u_abort(struct scsi_cmnd * SCpnt)
2974{
2975 HCS *pHCB;
2976
2977 pHCB = (HCS *) SCpnt->device->host->base;
2978 return tul_abort_srb(pHCB, SCpnt);
2979}
2980
2981/*
2982 * Reset registers, reset a hanging bus and
2983 * kill active and disconnected commands for target w/o soft reset
2984 */
2985static int i91u_reset(struct scsi_cmnd * SCpnt, unsigned int reset_flags)
2986{ /* I need Host Control Block Information */
2987 HCS *pHCB;
2988
2989 pHCB = (HCS *) SCpnt->device->host->base;
2990
2991 if (reset_flags & (SCSI_RESET_SUGGEST_BUS_RESET | SCSI_RESET_SUGGEST_HOST_RESET))
2992 return tul_reset_scsi_bus(pHCB);
2993 else
2994 return tul_device_reset(pHCB, SCpnt, SCpnt->device->id, reset_flags);
2995}
2996#endif
2997
2998static int i91u_bus_reset(struct scsi_cmnd * SCpnt)
2999{
3000 HCS *pHCB;
3001
3002 pHCB = (HCS *) SCpnt->device->host->base;
Jeff Garzik 68b3aa72005-05-28 07:56:31 -0400[diff] [blame]3003
3004 spin_lock_irq(SCpnt->device->host->host_lock);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3005 tul_reset_scsi(pHCB, 0);
Jeff Garzik 68b3aa72005-05-28 07:56:31 -0400[diff] [blame]3006 spin_unlock_irq(SCpnt->device->host->host_lock);
3007
Linus Torvalds1da177e2005-04-16 15:20:36 -0700[diff] [blame]3008 return SUCCESS;
3009}
3010
3011/*
3012 * Return the "logical geometry"
3013 */
3014static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
3015 sector_t capacity, int *info_array)
3016{
3017 HCS *pHcb; /* Point to Host adapter control block */
3018 TCS *pTcb;
3019
3020 pHcb = (HCS *) sdev->host->base;
3021 pTcb = &pHcb->HCS_Tcs[sdev->id];
3022
3023 if (pTcb->TCS_DrvHead) {
3024 info_array[0] = pTcb->TCS_DrvHead;
3025 info_array[1] = pTcb->TCS_DrvSector;
3026 info_array[2] = (unsigned long)capacity / pTcb->TCS_DrvHead / pTcb->TCS_DrvSector;
3027 } else {
3028 if (pTcb->TCS_DrvFlags & TCF_DRV_255_63) {
3029 info_array[0] = 255;
3030 info_array[1] = 63;
3031 info_array[2] = (unsigned long)capacity / 255 / 63;
3032 } else {
3033 info_array[0] = 64;
3034 info_array[1] = 32;
3035 info_array[2] = (unsigned long)capacity >> 11;
3036 }
3037 }
3038
3039#if defined(DEBUG_BIOSPARAM)
3040 if (i91u_debug & debug_biosparam) {
3041 printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
3042 info_array[0], info_array[1], info_array[2]);
3043 printk("WARNING: check, if the bios geometry is correct.\n");
3044 }
3045#endif
3046
3047 return 0;
3048}
3049
3050static void i91u_unmap_cmnd(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
3051{
3052 /* auto sense buffer */
3053 if (cmnd->SCp.ptr) {
3054 dma_unmap_single(&pci_dev->dev,
3055 (dma_addr_t)((unsigned long)cmnd->SCp.ptr),
3056 SENSE_SIZE, DMA_FROM_DEVICE);
3057 cmnd->SCp.ptr = NULL;
3058 }
3059
3060 /* request buffer */
3061 if (cmnd->use_sg) {
3062 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3063 sizeof(struct SG_Struc) * TOTAL_SG_ENTRY,
3064 DMA_BIDIRECTIONAL);
3065
3066 dma_unmap_sg(&pci_dev->dev, cmnd->request_buffer,
3067 cmnd->use_sg,
3068 cmnd->sc_data_direction);
3069 } else if (cmnd->request_bufflen) {
3070 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
3071 cmnd->request_bufflen,
3072 cmnd->sc_data_direction);
3073 }
3074}
3075
3076/*****************************************************************************
3077 Function name : i91uSCBPost
3078 Description : This is callback routine be called when tulip finish one
3079 SCSI command.
3080 Input : pHCB - Pointer to host adapter control block.
3081 pSCB - Pointer to SCSI control block.
3082 Output : None.
3083 Return : None.
3084*****************************************************************************/
3085static void i91uSCBPost(BYTE * pHcb, BYTE * pScb)
3086{
3087 struct scsi_cmnd *pSRB; /* Pointer to SCSI request block */
3088 HCS *pHCB;
3089 SCB *pSCB;
3090
3091 pHCB = (HCS *) pHcb;
3092 pSCB = (SCB *) pScb;
3093 if ((pSRB = pSCB->SCB_Srb) == 0) {
3094 printk("i91uSCBPost: SRB pointer is empty\n");
3095
3096 tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
3097 return;
3098 }
3099 switch (pSCB->SCB_HaStat) {
3100 case 0x0:
3101 case 0xa: /* Linked command complete without error and linked normally */
3102 case 0xb: /* Linked command complete without error interrupt generated */
3103 pSCB->SCB_HaStat = 0;
3104 break;
3105
3106 case 0x11: /* Selection time out-The initiator selection or target
3107 reselection was not complete within the SCSI Time out period */
3108 pSCB->SCB_HaStat = DID_TIME_OUT;
3109 break;
3110
3111 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
3112 phase sequence was requested by the target. The host adapter
3113 will generate a SCSI Reset Condition, notifying the host with
3114 a SCRD interrupt */
3115 pSCB->SCB_HaStat = DID_RESET;
3116 break;
3117
3118 case 0x1a: /* SCB Aborted. 07/21/98 */
3119 pSCB->SCB_HaStat = DID_ABORT;
3120 break;
3121
3122 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
3123 than was allocated by the Data Length field or the sum of the
3124 Scatter / Gather Data Length fields. */
3125 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
3126 case 0x16: /* Invalid SCB Operation Code. */
3127
3128 default:
3129 printk("ini9100u: %x %x\n", pSCB->SCB_HaStat, pSCB->SCB_TaStat);
3130 pSCB->SCB_HaStat = DID_ERROR; /* Couldn't find any better */
3131 break;
3132 }
3133
3134 pSRB->result = pSCB->SCB_TaStat | (pSCB->SCB_HaStat << 16);
3135
3136 if (pSRB == NULL) {
3137 printk("pSRB is NULL\n");
3138 }
3139
3140 i91u_unmap_cmnd(pHCB->pci_dev, pSRB);
3141 pSRB->scsi_done(pSRB); /* Notify system DONE */
3142
3143 tul_release_scb(pHCB, pSCB); /* Release SCB for current channel */
3144}
3145
3146/*
3147 * Release ressources
3148 */
3149static int i91u_release(struct Scsi_Host *hreg)
3150{
3151 free_irq(hreg->irq, hreg);
3152 release_region(hreg->io_port, 256);
3153 return 0;
3154}
3155MODULE_LICENSE("Dual BSD/GPL");
3156
3157static struct scsi_host_template driver_template = {
3158 .proc_name = "INI9100U",
3159 .name = i91u_REVID,
3160 .detect = i91u_detect,
3161 .release = i91u_release,
3162 .queuecommand = i91u_queuecommand,
3163// .abort = i91u_abort,
3164// .reset = i91u_reset,
3165 .eh_bus_reset_handler = i91u_bus_reset,
3166 .bios_param = i91u_biosparam,
3167 .can_queue = 1,
3168 .this_id = 1,
3169 .sg_tablesize = SG_ALL,
3170 .cmd_per_lun = 1,
3171 .use_clustering = ENABLE_CLUSTERING,
3172};
3173#include "scsi_module.c"
3174