blob: 9b75e19a9bab1e853fdc2084690d47ef9e6596d0 [file] [log] [blame]
Thomas Gleixnerc82ee6d2019-05-19 15:51:48 +02001// SPDX-License-Identifier: GPL-2.0-or-later
Linus Torvalds1da177e2005-04-16 15:20:36 -07002/**************************************************************************
3 * Initio 9100 device driver for Linux.
4 *
5 * Copyright (c) 1994-1998 Initio Corporation
6 * Copyright (c) 1998 Bas Vermeulen <bvermeul@blackstar.xs4all.nl>
Alan Cox72d39fe2007-05-21 15:06:43 +01007 * Copyright (c) 2004 Christoph Hellwig <hch@lst.de>
Alan Coxfa195af2008-10-27 15:16:36 +00008 * Copyright (c) 2007 Red Hat
Linus Torvalds1da177e2005-04-16 15:20:36 -07009 *
Linus Torvalds1da177e2005-04-16 15:20:36 -070010 *************************************************************************
11 *
12 * DESCRIPTION:
13 *
14 * This is the Linux low-level SCSI driver for Initio INI-9X00U/UW SCSI host
15 * adapters
16 *
17 * 08/06/97 hc - v1.01h
18 * - Support inic-940 and inic-935
19 * 09/26/97 hc - v1.01i
20 * - Make correction from J.W. Schultz suggestion
21 * 10/13/97 hc - Support reset function
22 * 10/21/97 hc - v1.01j
23 * - Support 32 LUN (SCSI 3)
24 * 01/14/98 hc - v1.01k
25 * - Fix memory allocation problem
26 * 03/04/98 hc - v1.01l
27 * - Fix tape rewind which will hang the system problem
Alan Cox72d39fe2007-05-21 15:06:43 +010028 * - Set can_queue to initio_num_scb
Linus Torvalds1da177e2005-04-16 15:20:36 -070029 * 06/25/98 hc - v1.01m
30 * - Get it work for kernel version >= 2.1.75
Alan Cox72d39fe2007-05-21 15:06:43 +010031 * - Dynamic assign SCSI bus reset holding time in initio_init()
Linus Torvalds1da177e2005-04-16 15:20:36 -070032 * 07/02/98 hc - v1.01n
33 * - Support 0002134A
34 * 08/07/98 hc - v1.01o
Alan Cox72d39fe2007-05-21 15:06:43 +010035 * - Change the initio_abort_srb routine to use scsi_done. <01>
Linus Torvalds1da177e2005-04-16 15:20:36 -070036 * 09/07/98 hl - v1.02
37 * - Change the INI9100U define and proc_dir_entry to
38 * reflect the newer Kernel 2.1.118, but the v1.o1o
39 * should work with Kernel 2.1.118.
40 * 09/20/98 wh - v1.02a
41 * - Support Abort command.
42 * - Handle reset routine.
43 * 09/21/98 hl - v1.03
44 * - remove comments.
45 * 12/09/98 bv - v1.03a
46 * - Removed unused code
47 * 12/13/98 bv - v1.03b
48 * - Remove cli() locking for kernels >= 2.1.95. This uses
49 * spinlocks to serialize access to the pSRB_head and
50 * pSRB_tail members of the HCS structure.
51 * 09/01/99 bv - v1.03d
52 * - Fixed a deadlock problem in SMP.
53 * 21/01/99 bv - v1.03e
54 * - Add support for the Domex 3192U PCI SCSI
55 * This is a slightly modified patch by
56 * Brian Macy <bmacy@sunshinecomputing.com>
57 * 22/02/99 bv - v1.03f
58 * - Didn't detect the INIC-950 in 2.0.x correctly.
59 * Now fixed.
60 * 05/07/99 bv - v1.03g
61 * - Changed the assumption that HZ = 100
62 * 10/17/03 mc - v1.04
63 * - added new DMA API support
64 * 06/01/04 jmd - v1.04a
65 * - Re-add reset_bus support
66 **************************************************************************/
67
68#include <linux/module.h>
69#include <linux/errno.h>
70#include <linux/delay.h>
71#include <linux/pci.h>
72#include <linux/init.h>
73#include <linux/blkdev.h>
74#include <linux/spinlock.h>
75#include <linux/stat.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070076#include <linux/kernel.h>
77#include <linux/proc_fs.h>
78#include <linux/string.h>
79#include <linux/interrupt.h>
80#include <linux/ioport.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070081#include <linux/slab.h>
82#include <linux/jiffies.h>
Matthias Gehre910638a2006-03-28 01:56:48 -080083#include <linux/dma-mapping.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070084#include <asm/io.h>
85
86#include <scsi/scsi.h>
87#include <scsi/scsi_cmnd.h>
88#include <scsi/scsi_device.h>
89#include <scsi/scsi_host.h>
90#include <scsi/scsi_tcq.h>
91
92#include "initio.h"
93
94#define SENSE_SIZE 14
95
96#define i91u_MAXQUEUE 2
97#define i91u_REVID "Initio INI-9X00U/UW SCSI device driver; Revision: 1.04a"
98
Linus Torvalds1da177e2005-04-16 15:20:36 -070099#ifdef DEBUG_i91u
100static unsigned int i91u_debug = DEBUG_DEFAULT;
101#endif
102
Alan Cox72d39fe2007-05-21 15:06:43 +0100103static int initio_tag_enable = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700104
105#ifdef DEBUG_i91u
106static int setup_debug = 0;
107#endif
108
Alan Cox72d39fe2007-05-21 15:06:43 +0100109static void i91uSCBPost(u8 * pHcb, u8 * pScb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111#define DEBUG_INTERRUPT 0
112#define DEBUG_QUEUE 0
113#define DEBUG_STATE 0
114#define INT_DISC 0
115
Alan Cox72d39fe2007-05-21 15:06:43 +0100116/*--- forward references ---*/
117static struct scsi_ctrl_blk *initio_find_busy_scb(struct initio_host * host, u16 tarlun);
118static struct scsi_ctrl_blk *initio_find_done_scb(struct initio_host * host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119
Alan Cox72d39fe2007-05-21 15:06:43 +0100120static int tulip_main(struct initio_host * host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Alan Cox72d39fe2007-05-21 15:06:43 +0100122static int initio_next_state(struct initio_host * host);
123static int initio_state_1(struct initio_host * host);
124static int initio_state_2(struct initio_host * host);
125static int initio_state_3(struct initio_host * host);
126static int initio_state_4(struct initio_host * host);
127static int initio_state_5(struct initio_host * host);
128static int initio_state_6(struct initio_host * host);
129static int initio_state_7(struct initio_host * host);
130static int initio_xfer_data_in(struct initio_host * host);
131static int initio_xfer_data_out(struct initio_host * host);
132static int initio_xpad_in(struct initio_host * host);
133static int initio_xpad_out(struct initio_host * host);
134static int initio_status_msg(struct initio_host * host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700135
Alan Cox72d39fe2007-05-21 15:06:43 +0100136static int initio_msgin(struct initio_host * host);
137static int initio_msgin_sync(struct initio_host * host);
138static int initio_msgin_accept(struct initio_host * host);
139static int initio_msgout_reject(struct initio_host * host);
140static int initio_msgin_extend(struct initio_host * host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141
Alan Cox72d39fe2007-05-21 15:06:43 +0100142static int initio_msgout_ide(struct initio_host * host);
143static int initio_msgout_abort_targ(struct initio_host * host);
144static int initio_msgout_abort_tag(struct initio_host * host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145
Alan Cox72d39fe2007-05-21 15:06:43 +0100146static int initio_bus_device_reset(struct initio_host * host);
147static void initio_select_atn(struct initio_host * host, struct scsi_ctrl_blk * scb);
148static void initio_select_atn3(struct initio_host * host, struct scsi_ctrl_blk * scb);
149static void initio_select_atn_stop(struct initio_host * host, struct scsi_ctrl_blk * scb);
150static int int_initio_busfree(struct initio_host * host);
151static int int_initio_scsi_rst(struct initio_host * host);
152static int int_initio_bad_seq(struct initio_host * host);
153static int int_initio_resel(struct initio_host * host);
154static int initio_sync_done(struct initio_host * host);
155static int wdtr_done(struct initio_host * host);
156static int wait_tulip(struct initio_host * host);
157static int initio_wait_done_disc(struct initio_host * host);
158static int initio_wait_disc(struct initio_host * host);
159static void tulip_scsi(struct initio_host * host);
160static int initio_post_scsi_rst(struct initio_host * host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700161
Alan Cox72d39fe2007-05-21 15:06:43 +0100162static void initio_se2_ew_en(unsigned long base);
163static void initio_se2_ew_ds(unsigned long base);
164static int initio_se2_rd_all(unsigned long base);
165static void initio_se2_update_all(unsigned long base); /* setup default pattern */
166static void initio_read_eeprom(unsigned long base);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700167
Alan Cox72d39fe2007-05-21 15:06:43 +0100168/* ---- INTERNAL VARIABLES ---- */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700169
Linus Torvalds1da177e2005-04-16 15:20:36 -0700170static NVRAM i91unvram;
171static NVRAM *i91unvramp;
172
Alan Cox72d39fe2007-05-21 15:06:43 +0100173static u8 i91udftNvRam[64] =
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174{
Alan Cox72d39fe2007-05-21 15:06:43 +0100175 /*----------- header -----------*/
Linus Torvalds1da177e2005-04-16 15:20:36 -0700176 0x25, 0xc9, /* Signature */
177 0x40, /* Size */
178 0x01, /* Revision */
179 /* -- Host Adapter Structure -- */
180 0x95, /* ModelByte0 */
181 0x00, /* ModelByte1 */
182 0x00, /* ModelInfo */
183 0x01, /* NumOfCh */
184 NBC1_DEFAULT, /* BIOSConfig1 */
185 0, /* BIOSConfig2 */
186 0, /* HAConfig1 */
187 0, /* HAConfig2 */
188 /* SCSI channel 0 and target Structure */
189 7, /* SCSIid */
190 NCC1_DEFAULT, /* SCSIconfig1 */
191 0, /* SCSIconfig2 */
192 0x10, /* NumSCSItarget */
193
194 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
195 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
196 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
197 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
198
199 /* SCSI channel 1 and target Structure */
200 7, /* SCSIid */
201 NCC1_DEFAULT, /* SCSIconfig1 */
202 0, /* SCSIconfig2 */
203 0x10, /* NumSCSItarget */
204
205 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
206 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
207 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
208 NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT, NTC_DEFAULT,
209 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
210 0, 0}; /* - CheckSum - */
211
212
Alan Cox72d39fe2007-05-21 15:06:43 +0100213static u8 initio_rate_tbl[8] = /* fast 20 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214{
Lucas De Marchi25985ed2011-03-30 22:57:33 -0300215 /* nanosecond divide by 4 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700216 12, /* 50ns, 20M */
217 18, /* 75ns, 13.3M */
218 25, /* 100ns, 10M */
219 31, /* 125ns, 8M */
220 37, /* 150ns, 6.6M */
221 43, /* 175ns, 5.7M */
222 50, /* 200ns, 5M */
223 62 /* 250ns, 4M */
224};
225
Alan Cox72d39fe2007-05-21 15:06:43 +0100226static void initio_do_pause(unsigned amount)
227{
228 /* Pause for amount jiffies */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229 unsigned long the_time = jiffies + amount;
230
Alan Cox72d39fe2007-05-21 15:06:43 +0100231 while (time_before_eq(jiffies, the_time))
232 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233}
234
235/*-- forward reference --*/
236
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237/******************************************************************
238 Input: instruction for Serial E2PROM
239
240 EX: se2_rd(0 call se2_instr() to send address and read command
241
242 StartBit OP_Code Address Data
243 --------- -------- ------------------ -------
244 1 1 , 0 A5,A4,A3,A2,A1,A0 D15-D0
245
246 +-----------------------------------------------------
247 |
248 CS -----+
249 +--+ +--+ +--+ +--+ +--+
250 ^ | ^ | ^ | ^ | ^ |
251 | | | | | | | | | |
252 CLK -------+ +--+ +--+ +--+ +--+ +--
253 (leading edge trigger)
254
255 +--1-----1--+
256 | SB OP | OP A5 A4
257 DI ----+ +--0------------------
258 (address and cmd sent to nvram)
259
260 -------------------------------------------+
261 |
262 DO +---
263 (data sent from nvram)
264
265
266******************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +0100267
268/**
269 * initio_se2_instr - bitbang an instruction
270 * @base: Base of InitIO controller
271 * @instr: Instruction for serial E2PROM
272 *
273 * Bitbang an instruction out to the serial E2Prom
274 */
275
276static void initio_se2_instr(unsigned long base, u8 instr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700277{
278 int i;
Alan Cox72d39fe2007-05-21 15:06:43 +0100279 u8 b;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280
Alan Cox72d39fe2007-05-21 15:06:43 +0100281 outb(SE2CS | SE2DO, base + TUL_NVRAM); /* cs+start bit */
282 udelay(30);
283 outb(SE2CS | SE2CLK | SE2DO, base + TUL_NVRAM); /* +CLK */
284 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700285
286 for (i = 0; i < 8; i++) {
287 if (instr & 0x80)
Alan Cox72d39fe2007-05-21 15:06:43 +0100288 b = SE2CS | SE2DO; /* -CLK+dataBit */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700289 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100290 b = SE2CS; /* -CLK */
291 outb(b, base + TUL_NVRAM);
292 udelay(30);
293 outb(b | SE2CLK, base + TUL_NVRAM); /* +CLK */
294 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700295 instr <<= 1;
296 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100297 outb(SE2CS, base + TUL_NVRAM); /* -CLK */
298 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299}
300
301
Alan Cox72d39fe2007-05-21 15:06:43 +0100302/**
303 * initio_se2_ew_en - Enable erase/write
304 * @base: Base address of InitIO controller
305 *
306 * Enable erase/write state of serial EEPROM
307 */
308void initio_se2_ew_en(unsigned long base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309{
Alan Cox72d39fe2007-05-21 15:06:43 +0100310 initio_se2_instr(base, 0x30); /* EWEN */
311 outb(0, base + TUL_NVRAM); /* -CS */
312 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313}
314
315
Alan Cox72d39fe2007-05-21 15:06:43 +0100316/**
317 * initio_se2_ew_ds - Disable erase/write
318 * @base: Base address of InitIO controller
319 *
320 * Disable erase/write state of serial EEPROM
321 */
322void initio_se2_ew_ds(unsigned long base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700323{
Alan Cox72d39fe2007-05-21 15:06:43 +0100324 initio_se2_instr(base, 0); /* EWDS */
325 outb(0, base + TUL_NVRAM); /* -CS */
326 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700327}
328
329
Alan Cox72d39fe2007-05-21 15:06:43 +0100330/**
331 * initio_se2_rd - read E2PROM word
332 * @base: Base of InitIO controller
333 * @addr: Address of word in E2PROM
334 *
335 * Read a word from the NV E2PROM device
336 */
337static u16 initio_se2_rd(unsigned long base, u8 addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700338{
Alan Cox72d39fe2007-05-21 15:06:43 +0100339 u8 instr, rb;
340 u16 val = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700341 int i;
342
Alan Cox72d39fe2007-05-21 15:06:43 +0100343 instr = (u8) (addr | 0x80);
344 initio_se2_instr(base, instr); /* READ INSTR */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
346 for (i = 15; i >= 0; i--) {
Alan Cox72d39fe2007-05-21 15:06:43 +0100347 outb(SE2CS | SE2CLK, base + TUL_NVRAM); /* +CLK */
348 udelay(30);
349 outb(SE2CS, base + TUL_NVRAM); /* -CLK */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700350
351 /* sample data after the following edge of clock */
Alan Cox72d39fe2007-05-21 15:06:43 +0100352 rb = inb(base + TUL_NVRAM);
353 rb &= SE2DI;
354 val += (rb << i);
355 udelay(30); /* 6/20/95 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 }
357
Alan Cox72d39fe2007-05-21 15:06:43 +0100358 outb(0, base + TUL_NVRAM); /* no chip select */
359 udelay(30);
360 return val;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700361}
362
Alan Cox72d39fe2007-05-21 15:06:43 +0100363/**
364 * initio_se2_wr - read E2PROM word
365 * @base: Base of InitIO controller
366 * @addr: Address of word in E2PROM
367 * @val: Value to write
368 *
369 * Write a word to the NV E2PROM device. Used when recovering from
370 * a problem with the NV.
371 */
372static void initio_se2_wr(unsigned long base, u8 addr, u16 val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
Alan Cox72d39fe2007-05-21 15:06:43 +0100374 u8 rb;
375 u8 instr;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 int i;
377
Alan Cox72d39fe2007-05-21 15:06:43 +0100378 instr = (u8) (addr | 0x40);
379 initio_se2_instr(base, instr); /* WRITE INSTR */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 for (i = 15; i >= 0; i--) {
Alan Cox72d39fe2007-05-21 15:06:43 +0100381 if (val & 0x8000)
382 outb(SE2CS | SE2DO, base + TUL_NVRAM); /* -CLK+dataBit 1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100384 outb(SE2CS, base + TUL_NVRAM); /* -CLK+dataBit 0 */
385 udelay(30);
386 outb(SE2CS | SE2CLK, base + TUL_NVRAM); /* +CLK */
387 udelay(30);
388 val <<= 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100390 outb(SE2CS, base + TUL_NVRAM); /* -CLK */
391 udelay(30);
392 outb(0, base + TUL_NVRAM); /* -CS */
393 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394
Alan Cox72d39fe2007-05-21 15:06:43 +0100395 outb(SE2CS, base + TUL_NVRAM); /* +CS */
396 udelay(30);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397
398 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +0100399 outb(SE2CS | SE2CLK, base + TUL_NVRAM); /* +CLK */
400 udelay(30);
401 outb(SE2CS, base + TUL_NVRAM); /* -CLK */
402 udelay(30);
403 if ((rb = inb(base + TUL_NVRAM)) & SE2DI)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404 break; /* write complete */
405 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100406 outb(0, base + TUL_NVRAM); /* -CS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700407}
408
Alan Cox72d39fe2007-05-21 15:06:43 +0100409/**
410 * initio_se2_rd_all - read hostadapter NV configuration
411 * @base: Base address of InitIO controller
412 *
413 * Reads the E2PROM data into main memory. Ensures that the checksum
414 * and header marker are valid. Returns 1 on success -1 on error.
415 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700416
Alan Cox72d39fe2007-05-21 15:06:43 +0100417static int initio_se2_rd_all(unsigned long base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418{
419 int i;
Alan Cox72d39fe2007-05-21 15:06:43 +0100420 u16 chksum = 0;
421 u16 *np;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700422
423 i91unvramp = &i91unvram;
Alan Cox72d39fe2007-05-21 15:06:43 +0100424 np = (u16 *) i91unvramp;
425 for (i = 0; i < 32; i++)
426 *np++ = initio_se2_rd(base, i);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700427
Alan Cox72d39fe2007-05-21 15:06:43 +0100428 /* Is signature "ini" ok ? */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700429 if (i91unvramp->NVM_Signature != INI_SIGNATURE)
430 return -1;
Alan Cox72d39fe2007-05-21 15:06:43 +0100431 /* Is ckecksum ok ? */
432 np = (u16 *) i91unvramp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 for (i = 0; i < 31; i++)
434 chksum += *np++;
Alan Cox72d39fe2007-05-21 15:06:43 +0100435 if (i91unvramp->NVM_CheckSum != chksum)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700436 return -1;
437 return 1;
438}
439
Alan Cox72d39fe2007-05-21 15:06:43 +0100440/**
441 * initio_se2_update_all - Update E2PROM
442 * @base: Base of InitIO controller
443 *
444 * Update the E2PROM by wrting any changes into the E2PROM
445 * chip, rewriting the checksum.
446 */
447static void initio_se2_update_all(unsigned long base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448{ /* setup default pattern */
449 int i;
Alan Cox72d39fe2007-05-21 15:06:43 +0100450 u16 chksum = 0;
451 u16 *np, *np1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700452
453 i91unvramp = &i91unvram;
454 /* Calculate checksum first */
Alan Cox72d39fe2007-05-21 15:06:43 +0100455 np = (u16 *) i91udftNvRam;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700456 for (i = 0; i < 31; i++)
457 chksum += *np++;
Alan Cox72d39fe2007-05-21 15:06:43 +0100458 *np = chksum;
459 initio_se2_ew_en(base); /* Enable write */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460
Alan Cox72d39fe2007-05-21 15:06:43 +0100461 np = (u16 *) i91udftNvRam;
462 np1 = (u16 *) i91unvramp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700463 for (i = 0; i < 32; i++, np++, np1++) {
Alan Cox72d39fe2007-05-21 15:06:43 +0100464 if (*np != *np1)
465 initio_se2_wr(base, i, *np);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700466 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100467 initio_se2_ew_ds(base); /* Disable write */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700468}
469
Alan Cox72d39fe2007-05-21 15:06:43 +0100470/**
471 * initio_read_eeprom - Retrieve configuration
472 * @base: Base of InitIO Host Adapter
473 *
474 * Retrieve the host adapter configuration data from E2Prom. If the
475 * data is invalid then the defaults are used and are also restored
476 * into the E2PROM. This forms the access point for the SCSI driver
477 * into the E2PROM layer, the other functions for the E2PROM are all
478 * internal use.
479 *
480 * Must be called single threaded, uses a shared global area.
481 */
482
483static void initio_read_eeprom(unsigned long base)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484{
Alan Cox72d39fe2007-05-21 15:06:43 +0100485 u8 gctrl;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700486
487 i91unvramp = &i91unvram;
Alan Cox72d39fe2007-05-21 15:06:43 +0100488 /* Enable EEProm programming */
489 gctrl = inb(base + TUL_GCTRL);
490 outb(gctrl | TUL_GCTRL_EEPROM_BIT, base + TUL_GCTRL);
491 if (initio_se2_rd_all(base) != 1) {
492 initio_se2_update_all(base); /* setup default pattern */
493 initio_se2_rd_all(base); /* load again */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700494 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100495 /* Disable EEProm programming */
496 gctrl = inb(base + TUL_GCTRL);
497 outb(gctrl & ~TUL_GCTRL_EEPROM_BIT, base + TUL_GCTRL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498}
499
Alan Cox72d39fe2007-05-21 15:06:43 +0100500/**
501 * initio_stop_bm - stop bus master
502 * @host: InitIO we are stopping
503 *
Daniel Mack3ad2f3fb2010-02-03 08:01:28 +0800504 * Stop any pending DMA operation, aborting the DMA if necessary
Alan Cox72d39fe2007-05-21 15:06:43 +0100505 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506
Alan Cox72d39fe2007-05-21 15:06:43 +0100507static void initio_stop_bm(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700508{
509
Alan Cox72d39fe2007-05-21 15:06:43 +0100510 if (inb(host->addr + TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
511 outb(TAX_X_ABT | TAX_X_CLR_FIFO, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700512 /* wait Abort DMA xfer done */
Alan Cox72d39fe2007-05-21 15:06:43 +0100513 while ((inb(host->addr + TUL_Int) & XABT) == 0)
514 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100516 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517}
518
Alan Cox72d39fe2007-05-21 15:06:43 +0100519/**
520 * initio_reset_scsi - Reset SCSI host controller
521 * @host: InitIO host to reset
522 * @seconds: Recovery time
523 *
524 * Perform a full reset of the SCSI subsystem.
525 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700526
Alan Cox72d39fe2007-05-21 15:06:43 +0100527static int initio_reset_scsi(struct initio_host * host, int seconds)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700528{
Alan Cox72d39fe2007-05-21 15:06:43 +0100529 outb(TSC_RST_BUS, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700530
Alan Cox72d39fe2007-05-21 15:06:43 +0100531 while (!((host->jsint = inb(host->addr + TUL_SInt)) & TSS_SCSIRST_INT))
532 cpu_relax();
533
Linus Torvalds1da177e2005-04-16 15:20:36 -0700534 /* reset tulip chip */
Alan Cox72d39fe2007-05-21 15:06:43 +0100535 outb(0, host->addr + TUL_SSignal);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700536
537 /* Stall for a while, wait for target's firmware ready,make it 2 sec ! */
538 /* SONY 5200 tape drive won't work if only stall for 1 sec */
Alan Cox72d39fe2007-05-21 15:06:43 +0100539 /* FIXME: this is a very long busy wait right now */
540 initio_do_pause(seconds * HZ);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700541
Alan Cox72d39fe2007-05-21 15:06:43 +0100542 inb(host->addr + TUL_SInt);
543 return SCSI_RESET_SUCCESS;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544}
545
Alan Cox72d39fe2007-05-21 15:06:43 +0100546/**
547 * initio_init - set up an InitIO host adapter
548 * @host: InitIO host adapter
Alan Cox72d39fe2007-05-21 15:06:43 +0100549 * @bios_addr: BIOS address
550 *
551 * Set up the host adapter and devices according to the configuration
552 * retrieved from the E2PROM.
553 *
554 * Locking: Calls E2PROM layer code which is not re-enterable so must
555 * run single threaded for now.
556 */
557
558static void initio_init(struct initio_host * host, u8 *bios_addr)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559{
560 int i;
Alan Cox72d39fe2007-05-21 15:06:43 +0100561 u8 *flags;
562 u8 *heads;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563
Alan Cox72d39fe2007-05-21 15:06:43 +0100564 /* Get E2Prom configuration */
565 initio_read_eeprom(host->addr);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 if (i91unvramp->NVM_SCSIInfo[0].NVM_NumOfTarg == 8)
Alan Cox72d39fe2007-05-21 15:06:43 +0100567 host->max_tar = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100569 host->max_tar = 16;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570
Alan Cox72d39fe2007-05-21 15:06:43 +0100571 host->config = i91unvramp->NVM_SCSIInfo[0].NVM_ChConfig1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700572
Alan Cox72d39fe2007-05-21 15:06:43 +0100573 host->scsi_id = i91unvramp->NVM_SCSIInfo[0].NVM_ChSCSIID;
574 host->idmask = ~(1 << host->scsi_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700575
Olaf Hering44456d32005-07-27 11:45:17 -0700576#ifdef CHK_PARITY
Linus Torvalds1da177e2005-04-16 15:20:36 -0700577 /* Enable parity error response */
Alan Cox72d39fe2007-05-21 15:06:43 +0100578 outb(inb(host->addr + TUL_PCMD) | 0x40, host->addr + TUL_PCMD);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579#endif
580
581 /* Mask all the interrupt */
Alan Cox72d39fe2007-05-21 15:06:43 +0100582 outb(0x1F, host->addr + TUL_Mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700583
Alan Cox72d39fe2007-05-21 15:06:43 +0100584 initio_stop_bm(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700585 /* --- Initialize the tulip --- */
Alan Cox72d39fe2007-05-21 15:06:43 +0100586 outb(TSC_RST_CHIP, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587
588 /* program HBA's SCSI ID */
Alan Cox72d39fe2007-05-21 15:06:43 +0100589 outb(host->scsi_id << 4, host->addr + TUL_SScsiId);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700590
591 /* Enable Initiator Mode ,phase latch,alternate sync period mode,
592 disable SCSI reset */
Alan Cox72d39fe2007-05-21 15:06:43 +0100593 if (host->config & HCC_EN_PAR)
594 host->sconf1 = (TSC_INITDEFAULT | TSC_EN_SCSI_PAR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700595 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100596 host->sconf1 = (TSC_INITDEFAULT);
597 outb(host->sconf1, host->addr + TUL_SConfig);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700598
Alan Cox72d39fe2007-05-21 15:06:43 +0100599 /* Enable HW reselect */
600 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601
Alan Cox72d39fe2007-05-21 15:06:43 +0100602 outb(0, host->addr + TUL_SPeriod);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700603
604 /* selection time out = 250 ms */
Alan Cox72d39fe2007-05-21 15:06:43 +0100605 outb(153, host->addr + TUL_STimeOut);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700606
Alan Cox72d39fe2007-05-21 15:06:43 +0100607 /* Enable SCSI terminator */
608 outb((host->config & (HCC_ACT_TERM1 | HCC_ACT_TERM2)),
609 host->addr + TUL_XCtrl);
610 outb(((host->config & HCC_AUTO_TERM) >> 4) |
611 (inb(host->addr + TUL_GCTRL1) & 0xFE),
612 host->addr + TUL_GCTRL1);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700613
614 for (i = 0,
Alan Cox72d39fe2007-05-21 15:06:43 +0100615 flags = & (i91unvramp->NVM_SCSIInfo[0].NVM_Targ0Config),
616 heads = bios_addr + 0x180;
617 i < host->max_tar;
618 i++, flags++) {
619 host->targets[i].flags = *flags & ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
620 if (host->targets[i].flags & TCF_EN_255)
621 host->targets[i].drv_flags = TCF_DRV_255_63;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700622 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100623 host->targets[i].drv_flags = 0;
624 host->targets[i].js_period = 0;
625 host->targets[i].sconfig0 = host->sconf1;
626 host->targets[i].heads = *heads++;
627 if (host->targets[i].heads == 255)
628 host->targets[i].drv_flags = TCF_DRV_255_63;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700629 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100630 host->targets[i].drv_flags = 0;
631 host->targets[i].sectors = *heads++;
632 host->targets[i].flags &= ~TCF_BUSY;
633 host->act_tags[i] = 0;
634 host->max_tags[i] = 0xFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700635 } /* for */
636 printk("i91u: PCI Base=0x%04X, IRQ=%d, BIOS=0x%04X0, SCSI ID=%d\n",
Alan Coxe9e42fa2007-10-15 20:51:32 +0100637 host->addr, host->pci_dev->irq,
Alan Cox72d39fe2007-05-21 15:06:43 +0100638 host->bios_addr, host->scsi_id);
639 /* Reset SCSI Bus */
640 if (host->config & HCC_SCSI_RESET) {
641 printk(KERN_INFO "i91u: Reset SCSI Bus ... \n");
642 initio_reset_scsi(host, 10);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700643 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100644 outb(0x17, host->addr + TUL_SCFG1);
645 outb(0xE9, host->addr + TUL_SIntEnable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700646}
647
Alan Cox72d39fe2007-05-21 15:06:43 +0100648/**
649 * initio_alloc_scb - Allocate an SCB
650 * @host: InitIO host we are allocating for
651 *
652 * Walk the SCB list for the controller and allocate a free SCB if
653 * one exists.
654 */
655static struct scsi_ctrl_blk *initio_alloc_scb(struct initio_host *host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656{
Alan Cox72d39fe2007-05-21 15:06:43 +0100657 struct scsi_ctrl_blk *scb;
658 unsigned long flags;
659
660 spin_lock_irqsave(&host->avail_lock, flags);
661 if ((scb = host->first_avail) != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700662#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100663 printk("find scb at %p\n", scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700664#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100665 if ((host->first_avail = scb->next) == NULL)
666 host->last_avail = NULL;
667 scb->next = NULL;
668 scb->status = SCB_RENT;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700669 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100670 spin_unlock_irqrestore(&host->avail_lock, flags);
671 return scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700672}
673
Alan Cox72d39fe2007-05-21 15:06:43 +0100674/**
675 * initio_release_scb - Release an SCB
676 * @host: InitIO host that owns the SCB
677 * @cmnd: SCB command block being returned
678 *
679 * Return an allocated SCB to the host free list
680 */
681
682static void initio_release_scb(struct initio_host * host, struct scsi_ctrl_blk * cmnd)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700683{
Alan Cox72d39fe2007-05-21 15:06:43 +0100684 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700685
686#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100687 printk("Release SCB %p; ", cmnd);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100689 spin_lock_irqsave(&(host->avail_lock), flags);
690 cmnd->srb = NULL;
691 cmnd->status = 0;
692 cmnd->next = NULL;
693 if (host->last_avail != NULL) {
694 host->last_avail->next = cmnd;
695 host->last_avail = cmnd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700696 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100697 host->first_avail = cmnd;
698 host->last_avail = cmnd;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100700 spin_unlock_irqrestore(&(host->avail_lock), flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700701}
702
703/***************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +0100704static void initio_append_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700705{
706
707#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100708 printk("Append pend SCB %p; ", scbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700709#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100710 scbp->status = SCB_PEND;
711 scbp->next = NULL;
712 if (host->last_pending != NULL) {
713 host->last_pending->next = scbp;
714 host->last_pending = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700715 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100716 host->first_pending = scbp;
717 host->last_pending = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700718 }
719}
720
721/***************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +0100722static void initio_push_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700723{
724
725#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100726 printk("Push pend SCB %p; ", scbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100728 scbp->status = SCB_PEND;
729 if ((scbp->next = host->first_pending) != NULL) {
730 host->first_pending = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700731 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100732 host->first_pending = scbp;
733 host->last_pending = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700734 }
735}
736
Alan Cox72d39fe2007-05-21 15:06:43 +0100737static struct scsi_ctrl_blk *initio_find_first_pend_scb(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738{
Alan Cox72d39fe2007-05-21 15:06:43 +0100739 struct scsi_ctrl_blk *first;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700740
741
Alan Cox72d39fe2007-05-21 15:06:43 +0100742 first = host->first_pending;
743 while (first != NULL) {
744 if (first->opcode != ExecSCSI)
745 return first;
746 if (first->tagmsg == 0) {
747 if ((host->act_tags[first->target] == 0) &&
748 !(host->targets[first->target].flags & TCF_BUSY))
749 return first;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700750 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100751 if ((host->act_tags[first->target] >=
752 host->max_tags[first->target]) |
753 (host->targets[first->target].flags & TCF_BUSY)) {
754 first = first->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 continue;
756 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100757 return first;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700758 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100759 first = first->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100761 return first;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762}
Alan Cox72d39fe2007-05-21 15:06:43 +0100763
764static void initio_unlink_pend_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700765{
Alan Cox72d39fe2007-05-21 15:06:43 +0100766 struct scsi_ctrl_blk *tmp, *prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
768#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100769 printk("unlink pend SCB %p; ", scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700770#endif
771
Alan Cox72d39fe2007-05-21 15:06:43 +0100772 prev = tmp = host->first_pending;
773 while (tmp != NULL) {
774 if (scb == tmp) { /* Unlink this SCB */
775 if (tmp == host->first_pending) {
776 if ((host->first_pending = tmp->next) == NULL)
777 host->last_pending = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700778 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100779 prev->next = tmp->next;
780 if (tmp == host->last_pending)
781 host->last_pending = prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100783 tmp->next = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700784 break;
785 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100786 prev = tmp;
787 tmp = tmp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700789}
Alan Cox72d39fe2007-05-21 15:06:43 +0100790
791static void initio_append_busy_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700792{
793
794#if DEBUG_QUEUE
Stuart Swalese2d435e2008-01-23 20:00:48 +0000795 printk("append busy SCB %p; ", scbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100797 if (scbp->tagmsg)
798 host->act_tags[scbp->target]++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700799 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100800 host->targets[scbp->target].flags |= TCF_BUSY;
801 scbp->status = SCB_BUSY;
802 scbp->next = NULL;
803 if (host->last_busy != NULL) {
804 host->last_busy->next = scbp;
805 host->last_busy = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100807 host->first_busy = scbp;
808 host->last_busy = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700809 }
810}
811
812/***************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +0100813static struct scsi_ctrl_blk *initio_pop_busy_scb(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700814{
Alan Cox72d39fe2007-05-21 15:06:43 +0100815 struct scsi_ctrl_blk *tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700816
817
Alan Cox72d39fe2007-05-21 15:06:43 +0100818 if ((tmp = host->first_busy) != NULL) {
819 if ((host->first_busy = tmp->next) == NULL)
820 host->last_busy = NULL;
821 tmp->next = NULL;
822 if (tmp->tagmsg)
823 host->act_tags[tmp->target]--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700824 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100825 host->targets[tmp->target].flags &= ~TCF_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826 }
827#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100828 printk("Pop busy SCB %p; ", tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700829#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100830 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831}
832
833/***************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +0100834static void initio_unlink_busy_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835{
Alan Cox72d39fe2007-05-21 15:06:43 +0100836 struct scsi_ctrl_blk *tmp, *prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837
838#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100839 printk("unlink busy SCB %p; ", scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700840#endif
841
Alan Cox72d39fe2007-05-21 15:06:43 +0100842 prev = tmp = host->first_busy;
843 while (tmp != NULL) {
844 if (scb == tmp) { /* Unlink this SCB */
845 if (tmp == host->first_busy) {
846 if ((host->first_busy = tmp->next) == NULL)
847 host->last_busy = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700848 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100849 prev->next = tmp->next;
850 if (tmp == host->last_busy)
851 host->last_busy = prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700852 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100853 tmp->next = NULL;
854 if (tmp->tagmsg)
855 host->act_tags[tmp->target]--;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700856 else
Alan Cox72d39fe2007-05-21 15:06:43 +0100857 host->targets[tmp->target].flags &= ~TCF_BUSY;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700858 break;
859 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100860 prev = tmp;
861 tmp = tmp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700862 }
863 return;
864}
865
Alan Cox72d39fe2007-05-21 15:06:43 +0100866struct scsi_ctrl_blk *initio_find_busy_scb(struct initio_host * host, u16 tarlun)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700867{
Lee Jones78e40ac2021-03-12 09:47:31 +0000868 struct scsi_ctrl_blk *tmp;
Alan Cox72d39fe2007-05-21 15:06:43 +0100869 u16 scbp_tarlun;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700870
871
Lee Jones78e40ac2021-03-12 09:47:31 +0000872 tmp = host->first_busy;
Alan Cox72d39fe2007-05-21 15:06:43 +0100873 while (tmp != NULL) {
874 scbp_tarlun = (tmp->lun << 8) | (tmp->target);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700875 if (scbp_tarlun == tarlun) { /* Unlink this SCB */
876 break;
877 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100878 tmp = tmp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700879 }
880#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100881 printk("find busy SCB %p; ", tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700882#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100883 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700884}
885
Alan Cox72d39fe2007-05-21 15:06:43 +0100886static void initio_append_done_scb(struct initio_host * host, struct scsi_ctrl_blk * scbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700887{
Linus Torvalds1da177e2005-04-16 15:20:36 -0700888#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100889 printk("append done SCB %p; ", scbp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700890#endif
891
Alan Cox72d39fe2007-05-21 15:06:43 +0100892 scbp->status = SCB_DONE;
893 scbp->next = NULL;
894 if (host->last_done != NULL) {
895 host->last_done->next = scbp;
896 host->last_done = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700897 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100898 host->first_done = scbp;
899 host->last_done = scbp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700900 }
901}
902
Alan Cox72d39fe2007-05-21 15:06:43 +0100903struct scsi_ctrl_blk *initio_find_done_scb(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700904{
Alan Cox72d39fe2007-05-21 15:06:43 +0100905 struct scsi_ctrl_blk *tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906
Alan Cox72d39fe2007-05-21 15:06:43 +0100907 if ((tmp = host->first_done) != NULL) {
908 if ((host->first_done = tmp->next) == NULL)
909 host->last_done = NULL;
910 tmp->next = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911 }
912#if DEBUG_QUEUE
Alan Cox72d39fe2007-05-21 15:06:43 +0100913 printk("find done SCB %p; ",tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700914#endif
Alan Cox72d39fe2007-05-21 15:06:43 +0100915 return tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700916}
917
Alan Cox72d39fe2007-05-21 15:06:43 +0100918static int initio_abort_srb(struct initio_host * host, struct scsi_cmnd *srbp)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700919{
Alan Cox72d39fe2007-05-21 15:06:43 +0100920 unsigned long flags;
921 struct scsi_ctrl_blk *tmp, *prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700922
Alan Cox72d39fe2007-05-21 15:06:43 +0100923 spin_lock_irqsave(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700924
Alan Cox72d39fe2007-05-21 15:06:43 +0100925 if ((host->semaph == 0) && (host->active == NULL)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700926 /* disable Jasmin SCSI Int */
Alan Cox72d39fe2007-05-21 15:06:43 +0100927 outb(0x1F, host->addr + TUL_Mask);
928 spin_unlock_irqrestore(&host->semaph_lock, flags);
929 /* FIXME: synchronize_irq needed ? */
930 tulip_main(host);
931 spin_lock_irqsave(&host->semaph_lock, flags);
932 host->semaph = 1;
933 outb(0x0F, host->addr + TUL_Mask);
934 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700935 return SCSI_ABORT_SNOOZE;
936 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100937 prev = tmp = host->first_pending; /* Check Pend queue */
938 while (tmp != NULL) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700939 /* 07/27/98 */
Alan Cox72d39fe2007-05-21 15:06:43 +0100940 if (tmp->srb == srbp) {
941 if (tmp == host->active) {
942 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700943 return SCSI_ABORT_BUSY;
Alan Cox72d39fe2007-05-21 15:06:43 +0100944 } else if (tmp == host->first_pending) {
945 if ((host->first_pending = tmp->next) == NULL)
946 host->last_pending = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100948 prev->next = tmp->next;
949 if (tmp == host->last_pending)
950 host->last_pending = prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700951 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100952 tmp->hastat = HOST_ABORTED;
953 tmp->flags |= SCF_DONE;
954 if (tmp->flags & SCF_POST)
955 (*tmp->post) ((u8 *) host, (u8 *) tmp);
956 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700957 return SCSI_ABORT_SUCCESS;
958 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100959 prev = tmp;
960 tmp = tmp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700961 }
962
Alan Cox72d39fe2007-05-21 15:06:43 +0100963 prev = tmp = host->first_busy; /* Check Busy queue */
964 while (tmp != NULL) {
965 if (tmp->srb == srbp) {
966 if (tmp == host->active) {
967 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700968 return SCSI_ABORT_BUSY;
Alan Cox72d39fe2007-05-21 15:06:43 +0100969 } else if (tmp->tagmsg == 0) {
970 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700971 return SCSI_ABORT_BUSY;
972 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100973 host->act_tags[tmp->target]--;
974 if (tmp == host->first_busy) {
975 if ((host->first_busy = tmp->next) == NULL)
976 host->last_busy = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700977 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +0100978 prev->next = tmp->next;
979 if (tmp == host->last_busy)
980 host->last_busy = prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700981 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100982 tmp->next = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700983
984
Alan Cox72d39fe2007-05-21 15:06:43 +0100985 tmp->hastat = HOST_ABORTED;
986 tmp->flags |= SCF_DONE;
987 if (tmp->flags & SCF_POST)
988 (*tmp->post) ((u8 *) host, (u8 *) tmp);
989 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700990 return SCSI_ABORT_SUCCESS;
991 }
992 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100993 prev = tmp;
994 tmp = tmp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700995 }
Alan Cox72d39fe2007-05-21 15:06:43 +0100996 spin_unlock_irqrestore(&host->semaph_lock, flags);
997 return SCSI_ABORT_NOT_RUNNING;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998}
999
1000/***************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +01001001static int initio_bad_seq(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002{
Alan Cox72d39fe2007-05-21 15:06:43 +01001003 struct scsi_ctrl_blk *scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004
Alan Cox72d39fe2007-05-21 15:06:43 +01001005 printk("initio_bad_seg c=%d\n", host->index);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006
Alan Cox72d39fe2007-05-21 15:06:43 +01001007 if ((scb = host->active) != NULL) {
1008 initio_unlink_busy_scb(host, scb);
1009 scb->hastat = HOST_BAD_PHAS;
1010 scb->tastat = 0;
1011 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001013 initio_stop_bm(host);
1014 initio_reset_scsi(host, 8); /* 7/29/98 */
1015 return initio_post_scsi_rst(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001016}
1017
Adrian Bunka2ba1922005-06-25 14:58:50 -07001018
Linus Torvalds1da177e2005-04-16 15:20:36 -07001019/************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +01001020static void initio_exec_scb(struct initio_host * host, struct scsi_ctrl_blk * scb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001021{
Alan Cox72d39fe2007-05-21 15:06:43 +01001022 unsigned long flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001023
Alan Cox72d39fe2007-05-21 15:06:43 +01001024 scb->mode = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025
Alan Cox72d39fe2007-05-21 15:06:43 +01001026 scb->sgidx = 0;
1027 scb->sgmax = scb->sglen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001028
Alan Cox72d39fe2007-05-21 15:06:43 +01001029 spin_lock_irqsave(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001030
Alan Cox72d39fe2007-05-21 15:06:43 +01001031 initio_append_pend_scb(host, scb); /* Append this SCB to Pending queue */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001032
1033/* VVVVV 07/21/98 */
Alan Cox72d39fe2007-05-21 15:06:43 +01001034 if (host->semaph == 1) {
1035 /* Disable Jasmin SCSI Int */
1036 outb(0x1F, host->addr + TUL_Mask);
1037 host->semaph = 0;
1038 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001039
Alan Cox72d39fe2007-05-21 15:06:43 +01001040 tulip_main(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001041
Alan Cox72d39fe2007-05-21 15:06:43 +01001042 spin_lock_irqsave(&host->semaph_lock, flags);
1043 host->semaph = 1;
1044 outb(0x0F, host->addr + TUL_Mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001045 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001046 spin_unlock_irqrestore(&host->semaph_lock, flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001047 return;
1048}
1049
1050/***************************************************************************/
Alan Cox72d39fe2007-05-21 15:06:43 +01001051static int initio_isr(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001052{
Alan Cox72d39fe2007-05-21 15:06:43 +01001053 if (inb(host->addr + TUL_Int) & TSS_INT_PENDING) {
1054 if (host->semaph == 1) {
1055 outb(0x1F, host->addr + TUL_Mask);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001056 /* Disable Tulip SCSI Int */
Alan Cox72d39fe2007-05-21 15:06:43 +01001057 host->semaph = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058
Alan Cox72d39fe2007-05-21 15:06:43 +01001059 tulip_main(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001060
Alan Cox72d39fe2007-05-21 15:06:43 +01001061 host->semaph = 1;
1062 outb(0x0F, host->addr + TUL_Mask);
1063 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001064 }
1065 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001066 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001067}
1068
Alan Cox72d39fe2007-05-21 15:06:43 +01001069static int tulip_main(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001070{
Alan Cox72d39fe2007-05-21 15:06:43 +01001071 struct scsi_ctrl_blk *scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001072
1073 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001074 tulip_scsi(host); /* Call tulip_scsi */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001075
Alan Cox72d39fe2007-05-21 15:06:43 +01001076 /* Walk the list of completed SCBs */
1077 while ((scb = initio_find_done_scb(host)) != NULL) { /* find done entry */
1078 if (scb->tastat == INI_QUEUE_FULL) {
1079 host->max_tags[scb->target] =
1080 host->act_tags[scb->target] - 1;
1081 scb->tastat = 0;
1082 initio_append_pend_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083 continue;
1084 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001085 if (!(scb->mode & SCM_RSENS)) { /* not in auto req. sense mode */
1086 if (scb->tastat == 2) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001087
1088 /* clr sync. nego flag */
1089
Alan Cox72d39fe2007-05-21 15:06:43 +01001090 if (scb->flags & SCF_SENSE) {
1091 u8 len;
1092 len = scb->senselen;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001093 if (len == 0)
1094 len = 1;
Alan Cox72d39fe2007-05-21 15:06:43 +01001095 scb->buflen = scb->senselen;
1096 scb->bufptr = scb->senseptr;
1097 scb->flags &= ~(SCF_SG | SCF_DIR); /* for xfer_data_in */
1098 /* so, we won't report wrong direction in xfer_data_in,
Linus Torvalds1da177e2005-04-16 15:20:36 -07001099 and won't report HOST_DO_DU in state_6 */
Alan Cox72d39fe2007-05-21 15:06:43 +01001100 scb->mode = SCM_RSENS;
1101 scb->ident &= 0xBF; /* Disable Disconnect */
1102 scb->tagmsg = 0;
1103 scb->tastat = 0;
1104 scb->cdblen = 6;
1105 scb->cdb[0] = SCSICMD_RequestSense;
1106 scb->cdb[1] = 0;
1107 scb->cdb[2] = 0;
1108 scb->cdb[3] = 0;
1109 scb->cdb[4] = len;
1110 scb->cdb[5] = 0;
1111 initio_push_pend_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001112 break;
1113 }
1114 }
1115 } else { /* in request sense mode */
1116
Alan Cox72d39fe2007-05-21 15:06:43 +01001117 if (scb->tastat == 2) { /* check contition status again after sending
Linus Torvalds1da177e2005-04-16 15:20:36 -07001118 requset sense cmd 0x3 */
Alan Cox72d39fe2007-05-21 15:06:43 +01001119 scb->hastat = HOST_BAD_PHAS;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001120 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001121 scb->tastat = 2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001122 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001123 scb->flags |= SCF_DONE;
1124 if (scb->flags & SCF_POST) {
1125 /* FIXME: only one post method and lose casts */
1126 (*scb->post) ((u8 *) host, (u8 *) scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001127 }
1128 } /* while */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001129 /* find_active: */
Alan Cox72d39fe2007-05-21 15:06:43 +01001130 if (inb(host->addr + TUL_SStatus0) & TSS_INT_PENDING)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131 continue;
Alan Cox72d39fe2007-05-21 15:06:43 +01001132 if (host->active) /* return to OS and wait for xfer_done_ISR/Selected_ISR */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001133 return 1; /* return to OS, enable interrupt */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001134 /* Check pending SCB */
Alan Cox72d39fe2007-05-21 15:06:43 +01001135 if (initio_find_first_pend_scb(host) == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001136 return 1; /* return to OS, enable interrupt */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001137 } /* End of for loop */
1138 /* statement won't reach here */
1139}
1140
Alan Cox72d39fe2007-05-21 15:06:43 +01001141static void tulip_scsi(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001142{
Alan Cox72d39fe2007-05-21 15:06:43 +01001143 struct scsi_ctrl_blk *scb;
1144 struct target_control *active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001145
1146 /* make sure to service interrupt asap */
Alan Cox72d39fe2007-05-21 15:06:43 +01001147 if ((host->jsstatus0 = inb(host->addr + TUL_SStatus0)) & TSS_INT_PENDING) {
1148 host->phase = host->jsstatus0 & TSS_PH_MASK;
1149 host->jsstatus1 = inb(host->addr + TUL_SStatus1);
1150 host->jsint = inb(host->addr + TUL_SInt);
1151 if (host->jsint & TSS_SCSIRST_INT) { /* SCSI bus reset detected */
1152 int_initio_scsi_rst(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001153 return;
1154 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001155 if (host->jsint & TSS_RESEL_INT) { /* if selected/reselected interrupt */
1156 if (int_initio_resel(host) == 0)
1157 initio_next_state(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001158 return;
1159 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001160 if (host->jsint & TSS_SEL_TIMEOUT) {
1161 int_initio_busfree(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001162 return;
1163 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001164 if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
1165 int_initio_busfree(host); /* unexpected bus free or sel timeout */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001166 return;
1167 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001168 if (host->jsint & (TSS_FUNC_COMP | TSS_BUS_SERV)) { /* func complete or Bus service */
1169 if ((scb = host->active) != NULL)
1170 initio_next_state(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001171 return;
1172 }
1173 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001174 if (host->active != NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001175 return;
1176
Alan Cox72d39fe2007-05-21 15:06:43 +01001177 if ((scb = initio_find_first_pend_scb(host)) == NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001178 return;
1179
1180 /* program HBA's SCSI ID & target SCSI ID */
Alan Cox72d39fe2007-05-21 15:06:43 +01001181 outb((host->scsi_id << 4) | (scb->target & 0x0F),
1182 host->addr + TUL_SScsiId);
1183 if (scb->opcode == ExecSCSI) {
1184 active_tc = &host->targets[scb->target];
Linus Torvalds1da177e2005-04-16 15:20:36 -07001185
Alan Cox72d39fe2007-05-21 15:06:43 +01001186 if (scb->tagmsg)
1187 active_tc->drv_flags |= TCF_DRV_EN_TAG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001188 else
Alan Cox72d39fe2007-05-21 15:06:43 +01001189 active_tc->drv_flags &= ~TCF_DRV_EN_TAG;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001190
Alan Cox72d39fe2007-05-21 15:06:43 +01001191 outb(active_tc->js_period, host->addr + TUL_SPeriod);
1192 if ((active_tc->flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) { /* do wdtr negotiation */
1193 initio_select_atn_stop(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001194 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001195 if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) { /* do sync negotiation */
1196 initio_select_atn_stop(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001197 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001198 if (scb->tagmsg)
1199 initio_select_atn3(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001200 else
Alan Cox72d39fe2007-05-21 15:06:43 +01001201 initio_select_atn(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001202 }
1203 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001204 if (scb->flags & SCF_POLL) {
1205 while (wait_tulip(host) != -1) {
1206 if (initio_next_state(host) == -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001207 break;
1208 }
1209 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001210 } else if (scb->opcode == BusDevRst) {
1211 initio_select_atn_stop(host, scb);
1212 scb->next_state = 8;
1213 if (scb->flags & SCF_POLL) {
1214 while (wait_tulip(host) != -1) {
1215 if (initio_next_state(host) == -1)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001216 break;
1217 }
1218 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001219 } else if (scb->opcode == AbortCmd) {
1220 if (initio_abort_srb(host, scb->srb) != 0) {
1221 initio_unlink_pend_scb(host, scb);
1222 initio_release_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001223 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001224 scb->opcode = BusDevRst;
1225 initio_select_atn_stop(host, scb);
1226 scb->next_state = 8;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001227 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001228 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001229 initio_unlink_pend_scb(host, scb);
1230 scb->hastat = 0x16; /* bad command */
1231 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001232 }
1233 return;
1234}
1235
Alan Cox72d39fe2007-05-21 15:06:43 +01001236/**
1237 * initio_next_state - Next SCSI state
1238 * @host: InitIO host we are processing
1239 *
1240 * Progress the active command block along the state machine
1241 * until we hit a state which we must wait for activity to occur.
1242 *
1243 * Returns zero or a negative code.
1244 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001245
Alan Cox72d39fe2007-05-21 15:06:43 +01001246static int initio_next_state(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001247{
1248 int next;
1249
Alan Cox72d39fe2007-05-21 15:06:43 +01001250 next = host->active->next_state;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001251 for (;;) {
1252 switch (next) {
1253 case 1:
Alan Cox72d39fe2007-05-21 15:06:43 +01001254 next = initio_state_1(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001255 break;
1256 case 2:
Alan Cox72d39fe2007-05-21 15:06:43 +01001257 next = initio_state_2(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001258 break;
1259 case 3:
Alan Cox72d39fe2007-05-21 15:06:43 +01001260 next = initio_state_3(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001261 break;
1262 case 4:
Alan Cox72d39fe2007-05-21 15:06:43 +01001263 next = initio_state_4(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001264 break;
1265 case 5:
Alan Cox72d39fe2007-05-21 15:06:43 +01001266 next = initio_state_5(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001267 break;
1268 case 6:
Alan Cox72d39fe2007-05-21 15:06:43 +01001269 next = initio_state_6(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001270 break;
1271 case 7:
Alan Cox72d39fe2007-05-21 15:06:43 +01001272 next = initio_state_7(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001273 break;
1274 case 8:
Alan Cox72d39fe2007-05-21 15:06:43 +01001275 return initio_bus_device_reset(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001276 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01001277 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001278 }
1279 if (next <= 0)
1280 return next;
1281 }
1282}
1283
1284
Alan Cox72d39fe2007-05-21 15:06:43 +01001285/**
1286 * initio_state_1 - SCSI state machine
1287 * @host: InitIO host we are controlling
1288 *
1289 * Perform SCSI state processing for Select/Attention/Stop
1290 */
1291
1292static int initio_state_1(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001293{
Alan Cox72d39fe2007-05-21 15:06:43 +01001294 struct scsi_ctrl_blk *scb = host->active;
1295 struct target_control *active_tc = host->active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001296#if DEBUG_STATE
1297 printk("-s1-");
1298#endif
1299
Alan Cox72d39fe2007-05-21 15:06:43 +01001300 /* Move the SCB from pending to busy */
1301 initio_unlink_pend_scb(host, scb);
1302 initio_append_busy_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001303
Alan Cox72d39fe2007-05-21 15:06:43 +01001304 outb(active_tc->sconfig0, host->addr + TUL_SConfig );
Linus Torvalds1da177e2005-04-16 15:20:36 -07001305 /* ATN on */
Alan Cox72d39fe2007-05-21 15:06:43 +01001306 if (host->phase == MSG_OUT) {
1307 outb(TSC_EN_BUS_IN | TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
1308 outb(scb->ident, host->addr + TUL_SFifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001309
Alan Cox72d39fe2007-05-21 15:06:43 +01001310 if (scb->tagmsg) {
1311 outb(scb->tagmsg, host->addr + TUL_SFifo);
1312 outb(scb->tagid, host->addr + TUL_SFifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001313 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001314 if ((active_tc->flags & (TCF_WDTR_DONE | TCF_NO_WDTR)) == 0) {
1315 active_tc->flags |= TCF_WDTR_DONE;
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001316 outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01001317 outb(2, host->addr + TUL_SFifo); /* Extended msg length */
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001318 outb(EXTENDED_SDTR, host->addr + TUL_SFifo); /* Sync request */
Alan Cox72d39fe2007-05-21 15:06:43 +01001319 outb(1, host->addr + TUL_SFifo); /* Start from 16 bits */
1320 } else if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) {
1321 active_tc->flags |= TCF_SYNC_DONE;
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001322 outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01001323 outb(3, host->addr + TUL_SFifo); /* extended msg length */
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001324 outb(EXTENDED_SDTR, host->addr + TUL_SFifo); /* sync request */
Alan Cox72d39fe2007-05-21 15:06:43 +01001325 outb(initio_rate_tbl[active_tc->flags & TCF_SCSI_RATE], host->addr + TUL_SFifo);
1326 outb(MAX_OFFSET, host->addr + TUL_SFifo); /* REQ/ACK offset */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001327 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001328 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1329 if (wait_tulip(host) == -1)
1330 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001331 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001332 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1333 outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)), host->addr + TUL_SSignal);
1334 /* Into before CDB xfer */
1335 return 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001336}
1337
1338
Alan Cox72d39fe2007-05-21 15:06:43 +01001339/**
1340 * initio_state_2 - SCSI state machine
1341 * @host: InitIO host we are controlling
1342 *
1343 * state after selection with attention
1344 * state after selection with attention3
1345 */
1346
1347static int initio_state_2(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001348{
Alan Cox72d39fe2007-05-21 15:06:43 +01001349 struct scsi_ctrl_blk *scb = host->active;
1350 struct target_control *active_tc = host->active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001351#if DEBUG_STATE
1352 printk("-s2-");
1353#endif
1354
Alan Cox72d39fe2007-05-21 15:06:43 +01001355 initio_unlink_pend_scb(host, scb);
1356 initio_append_busy_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001357
Alan Cox72d39fe2007-05-21 15:06:43 +01001358 outb(active_tc->sconfig0, host->addr + TUL_SConfig);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001359
Alan Cox72d39fe2007-05-21 15:06:43 +01001360 if (host->jsstatus1 & TSS_CMD_PH_CMP)
1361 return 4;
1362
1363 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1364 outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)), host->addr + TUL_SSignal);
1365 /* Into before CDB xfer */
1366 return 3;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001367}
1368
Alan Cox72d39fe2007-05-21 15:06:43 +01001369/**
1370 * initio_state_3 - SCSI state machine
1371 * @host: InitIO host we are controlling
1372 *
1373 * state before CDB xfer is done
1374 */
1375
1376static int initio_state_3(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001377{
Alan Cox72d39fe2007-05-21 15:06:43 +01001378 struct scsi_ctrl_blk *scb = host->active;
1379 struct target_control *active_tc = host->active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001380 int i;
1381
1382#if DEBUG_STATE
1383 printk("-s3-");
1384#endif
1385 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001386 switch (host->phase) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001387 case CMD_OUT: /* Command out phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001388 for (i = 0; i < (int) scb->cdblen; i++)
1389 outb(scb->cdb[i], host->addr + TUL_SFifo);
1390 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1391 if (wait_tulip(host) == -1)
1392 return -1;
1393 if (host->phase == CMD_OUT)
1394 return initio_bad_seq(host);
1395 return 4;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001396
1397 case MSG_IN: /* Message in phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001398 scb->next_state = 3;
1399 if (initio_msgin(host) == -1)
1400 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001401 break;
1402
1403 case STATUS_IN: /* Status phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001404 if (initio_status_msg(host) == -1)
1405 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001406 break;
1407
1408 case MSG_OUT: /* Message out phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001409 if (active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) {
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001410 outb(NOP, host->addr + TUL_SFifo); /* msg nop */
Alan Cox72d39fe2007-05-21 15:06:43 +01001411 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1412 if (wait_tulip(host) == -1)
1413 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001414 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001415 active_tc->flags |= TCF_SYNC_DONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001416
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001417 outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01001418 outb(3, host->addr + TUL_SFifo); /* ext. msg len */
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001419 outb(EXTENDED_SDTR, host->addr + TUL_SFifo); /* sync request */
Alan Cox72d39fe2007-05-21 15:06:43 +01001420 outb(initio_rate_tbl[active_tc->flags & TCF_SCSI_RATE], host->addr + TUL_SFifo);
1421 outb(MAX_OFFSET, host->addr + TUL_SFifo); /* REQ/ACK offset */
1422 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1423 if (wait_tulip(host) == -1)
1424 return -1;
1425 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1426 outb(inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7), host->addr + TUL_SSignal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001427
1428 }
1429 break;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001430 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01001431 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001432 }
1433 }
1434}
1435
Alan Cox72d39fe2007-05-21 15:06:43 +01001436/**
1437 * initio_state_4 - SCSI state machine
1438 * @host: InitIO host we are controlling
1439 *
1440 * SCSI state machine. State 4
1441 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001442
Alan Cox72d39fe2007-05-21 15:06:43 +01001443static int initio_state_4(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001444{
Alan Cox72d39fe2007-05-21 15:06:43 +01001445 struct scsi_ctrl_blk *scb = host->active;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001446
1447#if DEBUG_STATE
1448 printk("-s4-");
1449#endif
Alan Cox72d39fe2007-05-21 15:06:43 +01001450 if ((scb->flags & SCF_DIR) == SCF_NO_XF) {
1451 return 6; /* Go to state 6 (After data) */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001452 }
1453 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001454 if (scb->buflen == 0)
1455 return 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001456
Alan Cox72d39fe2007-05-21 15:06:43 +01001457 switch (host->phase) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001458
1459 case STATUS_IN: /* Status phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001460 if ((scb->flags & SCF_DIR) != 0) /* if direction bit set then report data underrun */
1461 scb->hastat = HOST_DO_DU;
1462 if ((initio_status_msg(host)) == -1)
1463 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001464 break;
1465
1466 case MSG_IN: /* Message in phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001467 scb->next_state = 0x4;
1468 if (initio_msgin(host) == -1)
1469 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001470 break;
1471
1472 case MSG_OUT: /* Message out phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001473 if (host->jsstatus0 & TSS_PAR_ERROR) {
1474 scb->buflen = 0;
1475 scb->hastat = HOST_DO_DU;
1476 if (initio_msgout_ide(host) == -1)
1477 return -1;
1478 return 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001479 } else {
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001480 outb(NOP, host->addr + TUL_SFifo); /* msg nop */
Alan Cox72d39fe2007-05-21 15:06:43 +01001481 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1482 if (wait_tulip(host) == -1)
1483 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001484 }
1485 break;
1486
1487 case DATA_IN: /* Data in phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001488 return initio_xfer_data_in(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001489
1490 case DATA_OUT: /* Data out phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001491 return initio_xfer_data_out(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001492
1493 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01001494 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001495 }
1496 }
1497}
1498
1499
Alan Cox72d39fe2007-05-21 15:06:43 +01001500/**
1501 * initio_state_5 - SCSI state machine
1502 * @host: InitIO host we are controlling
1503 *
1504 * State after dma xfer done or phase change before xfer done
1505 */
1506
1507static int initio_state_5(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001508{
Alan Cox72d39fe2007-05-21 15:06:43 +01001509 struct scsi_ctrl_blk *scb = host->active;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001510 long cnt, xcnt; /* cannot use unsigned !! code: if (xcnt < 0) */
1511
1512#if DEBUG_STATE
1513 printk("-s5-");
1514#endif
Alan Cox72d39fe2007-05-21 15:06:43 +01001515 /*------ get remaining count -------*/
1516 cnt = inl(host->addr + TUL_SCnt0) & 0x0FFFFFF;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001517
Alan Cox72d39fe2007-05-21 15:06:43 +01001518 if (inb(host->addr + TUL_XCmd) & 0x20) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001519 /* ----------------------- DATA_IN ----------------------------- */
1520 /* check scsi parity error */
Alan Cox72d39fe2007-05-21 15:06:43 +01001521 if (host->jsstatus0 & TSS_PAR_ERROR)
1522 scb->hastat = HOST_DO_DU;
1523 if (inb(host->addr + TUL_XStatus) & XPEND) { /* DMA xfer pending, Send STOP */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001524 /* tell Hardware scsi xfer has been terminated */
Alan Cox72d39fe2007-05-21 15:06:43 +01001525 outb(inb(host->addr + TUL_XCtrl) | 0x80, host->addr + TUL_XCtrl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001526 /* wait until DMA xfer not pending */
Alan Cox72d39fe2007-05-21 15:06:43 +01001527 while (inb(host->addr + TUL_XStatus) & XPEND)
1528 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001529 }
1530 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001531 /*-------- DATA OUT -----------*/
1532 if ((inb(host->addr + TUL_SStatus1) & TSS_XFER_CMP) == 0) {
1533 if (host->active_tc->js_period & TSC_WIDE_SCSI)
1534 cnt += (inb(host->addr + TUL_SFifoCnt) & 0x1F) << 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001535 else
Alan Cox72d39fe2007-05-21 15:06:43 +01001536 cnt += (inb(host->addr + TUL_SFifoCnt) & 0x1F);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001537 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001538 if (inb(host->addr + TUL_XStatus) & XPEND) { /* if DMA xfer is pending, abort DMA xfer */
1539 outb(TAX_X_ABT, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001540 /* wait Abort DMA xfer done */
Alan Cox72d39fe2007-05-21 15:06:43 +01001541 while ((inb(host->addr + TUL_Int) & XABT) == 0)
1542 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -07001543 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001544 if ((cnt == 1) && (host->phase == DATA_OUT)) {
1545 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1546 if (wait_tulip(host) == -1)
1547 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001548 cnt = 0;
1549 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001550 if ((inb(host->addr + TUL_SStatus1) & TSS_XFER_CMP) == 0)
1551 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001552 }
1553 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07001554 if (cnt == 0) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001555 scb->buflen = 0;
1556 return 6; /* After Data */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001557 }
1558 /* Update active data pointer */
Alan Cox72d39fe2007-05-21 15:06:43 +01001559 xcnt = (long) scb->buflen - cnt; /* xcnt== bytes already xferred */
1560 scb->buflen = (u32) cnt; /* cnt == bytes left to be xferred */
1561 if (scb->flags & SCF_SG) {
1562 struct sg_entry *sgp;
1563 unsigned long i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001564
Alan Cox72d39fe2007-05-21 15:06:43 +01001565 sgp = &scb->sglist[scb->sgidx];
1566 for (i = scb->sgidx; i < scb->sgmax; sgp++, i++) {
1567 xcnt -= (long) sgp->len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001568 if (xcnt < 0) { /* this sgp xfer half done */
Alan Cox72d39fe2007-05-21 15:06:43 +01001569 xcnt += (long) sgp->len; /* xcnt == bytes xferred in this sgp */
1570 sgp->data += (u32) xcnt; /* new ptr to be xfer */
1571 sgp->len -= (u32) xcnt; /* new len to be xfer */
1572 scb->bufptr += ((u32) (i - scb->sgidx) << 3);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001573 /* new SG table ptr */
Alan Cox72d39fe2007-05-21 15:06:43 +01001574 scb->sglen = (u8) (scb->sgmax - i);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001575 /* new SG table len */
Alan Cox72d39fe2007-05-21 15:06:43 +01001576 scb->sgidx = (u16) i;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001577 /* for next disc and come in this loop */
Alan Cox72d39fe2007-05-21 15:06:43 +01001578 return 4; /* Go to state 4 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001579 }
1580 /* else (xcnt >= 0 , i.e. this sgp already xferred */
1581 } /* for */
Alan Cox72d39fe2007-05-21 15:06:43 +01001582 return 6; /* Go to state 6 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001583 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001584 scb->bufptr += (u32) xcnt;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001585 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001586 return 4; /* Go to state 4 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001587}
1588
Alan Cox72d39fe2007-05-21 15:06:43 +01001589/**
1590 * initio_state_6 - SCSI state machine
1591 * @host: InitIO host we are controlling
1592 *
1593 * State after Data phase
1594 */
1595
1596static int initio_state_6(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001597{
Alan Cox72d39fe2007-05-21 15:06:43 +01001598 struct scsi_ctrl_blk *scb = host->active;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001599
1600#if DEBUG_STATE
1601 printk("-s6-");
1602#endif
1603 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001604 switch (host->phase) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001605 case STATUS_IN: /* Status phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001606 if ((initio_status_msg(host)) == -1)
1607 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001608 break;
1609
1610 case MSG_IN: /* Message in phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001611 scb->next_state = 6;
1612 if ((initio_msgin(host)) == -1)
1613 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001614 break;
1615
1616 case MSG_OUT: /* Message out phase */
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001617 outb(NOP, host->addr + TUL_SFifo); /* msg nop */
Alan Cox72d39fe2007-05-21 15:06:43 +01001618 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1619 if (wait_tulip(host) == -1)
1620 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001621 break;
1622
1623 case DATA_IN: /* Data in phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001624 return initio_xpad_in(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001625
1626 case DATA_OUT: /* Data out phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001627 return initio_xpad_out(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001628
1629 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01001630 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001631 }
1632 }
1633}
1634
Alan Cox72d39fe2007-05-21 15:06:43 +01001635/**
1636 * initio_state_7 - SCSI state machine
1637 * @host: InitIO host we are controlling
1638 *
1639 */
1640
Chen Zhou0c3dbde2019-12-17 21:43:09 +08001641static int initio_state_7(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001642{
1643 int cnt, i;
1644
1645#if DEBUG_STATE
1646 printk("-s7-");
1647#endif
1648 /* flush SCSI FIFO */
Alan Cox72d39fe2007-05-21 15:06:43 +01001649 cnt = inb(host->addr + TUL_SFifoCnt) & 0x1F;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001650 if (cnt) {
1651 for (i = 0; i < cnt; i++)
Alan Cox72d39fe2007-05-21 15:06:43 +01001652 inb(host->addr + TUL_SFifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001653 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001654 switch (host->phase) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07001655 case DATA_IN: /* Data in phase */
1656 case DATA_OUT: /* Data out phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001657 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001658 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01001659 return 6; /* Go to state 6 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001660 }
1661}
1662
Alan Cox72d39fe2007-05-21 15:06:43 +01001663/**
1664 * initio_xfer_data_in - Commence data input
1665 * @host: InitIO host in use
1666 *
1667 * Commence a block of data transfer. The transfer itself will
1668 * be managed by the controller and we will get a completion (or
1669 * failure) interrupt.
1670 */
1671static int initio_xfer_data_in(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001672{
Alan Cox72d39fe2007-05-21 15:06:43 +01001673 struct scsi_ctrl_blk *scb = host->active;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001674
Alan Cox72d39fe2007-05-21 15:06:43 +01001675 if ((scb->flags & SCF_DIR) == SCF_DOUT)
1676 return 6; /* wrong direction */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001677
Alan Cox72d39fe2007-05-21 15:06:43 +01001678 outl(scb->buflen, host->addr + TUL_SCnt0);
1679 outb(TSC_XF_DMA_IN, host->addr + TUL_SCmd); /* 7/25/95 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001680
Alan Cox72d39fe2007-05-21 15:06:43 +01001681 if (scb->flags & SCF_SG) { /* S/G xfer */
1682 outl(((u32) scb->sglen) << 3, host->addr + TUL_XCntH);
1683 outl(scb->bufptr, host->addr + TUL_XAddH);
1684 outb(TAX_SG_IN, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001685 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001686 outl(scb->buflen, host->addr + TUL_XCntH);
1687 outl(scb->bufptr, host->addr + TUL_XAddH);
1688 outb(TAX_X_IN, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001689 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001690 scb->next_state = 0x5;
1691 return 0; /* return to OS, wait xfer done , let jas_isr come in */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001692}
1693
Alan Cox72d39fe2007-05-21 15:06:43 +01001694/**
1695 * initio_xfer_data_out - Commence data output
1696 * @host: InitIO host in use
1697 *
1698 * Commence a block of data transfer. The transfer itself will
1699 * be managed by the controller and we will get a completion (or
1700 * failure) interrupt.
1701 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001702
Alan Cox72d39fe2007-05-21 15:06:43 +01001703static int initio_xfer_data_out(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001704{
Alan Cox72d39fe2007-05-21 15:06:43 +01001705 struct scsi_ctrl_blk *scb = host->active;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001706
Alan Cox72d39fe2007-05-21 15:06:43 +01001707 if ((scb->flags & SCF_DIR) == SCF_DIN)
1708 return 6; /* wrong direction */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001709
Alan Cox72d39fe2007-05-21 15:06:43 +01001710 outl(scb->buflen, host->addr + TUL_SCnt0);
1711 outb(TSC_XF_DMA_OUT, host->addr + TUL_SCmd);
1712
1713 if (scb->flags & SCF_SG) { /* S/G xfer */
1714 outl(((u32) scb->sglen) << 3, host->addr + TUL_XCntH);
1715 outl(scb->bufptr, host->addr + TUL_XAddH);
1716 outb(TAX_SG_OUT, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001717 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01001718 outl(scb->buflen, host->addr + TUL_XCntH);
1719 outl(scb->bufptr, host->addr + TUL_XAddH);
1720 outb(TAX_X_OUT, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001721 }
1722
Alan Cox72d39fe2007-05-21 15:06:43 +01001723 scb->next_state = 0x5;
1724 return 0; /* return to OS, wait xfer done , let jas_isr come in */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001725}
1726
Alan Cox72d39fe2007-05-21 15:06:43 +01001727int initio_xpad_in(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001728{
Alan Cox72d39fe2007-05-21 15:06:43 +01001729 struct scsi_ctrl_blk *scb = host->active;
1730 struct target_control *active_tc = host->active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001731
Alan Cox72d39fe2007-05-21 15:06:43 +01001732 if ((scb->flags & SCF_DIR) != SCF_NO_DCHK)
1733 scb->hastat = HOST_DO_DU; /* over run */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001734 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001735 if (active_tc->js_period & TSC_WIDE_SCSI)
1736 outl(2, host->addr + TUL_SCnt0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001737 else
Alan Cox72d39fe2007-05-21 15:06:43 +01001738 outl(1, host->addr + TUL_SCnt0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001739
Alan Cox72d39fe2007-05-21 15:06:43 +01001740 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
1741 if (wait_tulip(host) == -1)
1742 return -1;
1743 if (host->phase != DATA_IN) {
1744 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1745 return 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001746 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001747 inb(host->addr + TUL_SFifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001748 }
1749}
1750
Alan Cox72d39fe2007-05-21 15:06:43 +01001751int initio_xpad_out(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001752{
Alan Cox72d39fe2007-05-21 15:06:43 +01001753 struct scsi_ctrl_blk *scb = host->active;
1754 struct target_control *active_tc = host->active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001755
Alan Cox72d39fe2007-05-21 15:06:43 +01001756 if ((scb->flags & SCF_DIR) != SCF_NO_DCHK)
1757 scb->hastat = HOST_DO_DU; /* over run */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001758 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001759 if (active_tc->js_period & TSC_WIDE_SCSI)
1760 outl(2, host->addr + TUL_SCnt0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001761 else
Alan Cox72d39fe2007-05-21 15:06:43 +01001762 outl(1, host->addr + TUL_SCnt0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001763
Alan Cox72d39fe2007-05-21 15:06:43 +01001764 outb(0, host->addr + TUL_SFifo);
1765 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1766 if ((wait_tulip(host)) == -1)
1767 return -1;
1768 if (host->phase != DATA_OUT) { /* Disable wide CPU to allow read 16 bits */
1769 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1);
1770 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1771 return 6;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001772 }
1773 }
1774}
1775
Alan Cox72d39fe2007-05-21 15:06:43 +01001776int initio_status_msg(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001777{ /* status & MSG_IN */
Alan Cox72d39fe2007-05-21 15:06:43 +01001778 struct scsi_ctrl_blk *scb = host->active;
1779 u8 msg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001780
Alan Cox72d39fe2007-05-21 15:06:43 +01001781 outb(TSC_CMD_COMP, host->addr + TUL_SCmd);
1782 if (wait_tulip(host) == -1)
1783 return -1;
1784
Linus Torvalds1da177e2005-04-16 15:20:36 -07001785 /* get status */
Alan Cox72d39fe2007-05-21 15:06:43 +01001786 scb->tastat = inb(host->addr + TUL_SFifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001787
Alan Cox72d39fe2007-05-21 15:06:43 +01001788 if (host->phase == MSG_OUT) {
1789 if (host->jsstatus0 & TSS_PAR_ERROR)
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001790 outb(MSG_PARITY_ERROR, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01001791 else
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001792 outb(NOP, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01001793 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1794 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001795 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001796 if (host->phase == MSG_IN) {
1797 msg = inb(host->addr + TUL_SFifo);
1798 if (host->jsstatus0 & TSS_PAR_ERROR) { /* Parity error */
1799 if ((initio_msgin_accept(host)) == -1)
1800 return -1;
1801 if (host->phase != MSG_OUT)
1802 return initio_bad_seq(host);
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001803 outb(MSG_PARITY_ERROR, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01001804 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
1805 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001806 }
1807 if (msg == 0) { /* Command complete */
1808
Alan Cox72d39fe2007-05-21 15:06:43 +01001809 if ((scb->tastat & 0x18) == 0x10) /* No link support */
1810 return initio_bad_seq(host);
1811 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
1812 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
1813 return initio_wait_done_disc(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001814
1815 }
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001816 if (msg == LINKED_CMD_COMPLETE ||
1817 msg == LINKED_FLG_CMD_COMPLETE) {
Alan Cox72d39fe2007-05-21 15:06:43 +01001818 if ((scb->tastat & 0x18) == 0x10)
1819 return initio_msgin_accept(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001820 }
1821 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001822 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001823}
1824
1825
Linus Torvalds1da177e2005-04-16 15:20:36 -07001826/* scsi bus free */
Alan Cox72d39fe2007-05-21 15:06:43 +01001827int int_initio_busfree(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001828{
Alan Cox72d39fe2007-05-21 15:06:43 +01001829 struct scsi_ctrl_blk *scb = host->active;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001830
Alan Cox72d39fe2007-05-21 15:06:43 +01001831 if (scb != NULL) {
1832 if (scb->status & SCB_SELECT) { /* selection timeout */
1833 initio_unlink_pend_scb(host, scb);
1834 scb->hastat = HOST_SEL_TOUT;
1835 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001836 } else { /* Unexpected bus free */
Alan Cox72d39fe2007-05-21 15:06:43 +01001837 initio_unlink_busy_scb(host, scb);
1838 scb->hastat = HOST_BUS_FREE;
1839 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001840 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001841 host->active = NULL;
1842 host->active_tc = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001843 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001844 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
1845 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
1846 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
1847 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001848}
1849
1850
Alan Cox72d39fe2007-05-21 15:06:43 +01001851/**
1852 * int_initio_scsi_rst - SCSI reset occurred
1853 * @host: Host seeing the reset
1854 *
1855 * A SCSI bus reset has occurred. Clean up any pending transfer
1856 * the hardware is doing by DMA and then abort all active and
1857 * disconnected commands. The mid layer should sort the rest out
1858 * for us
1859 */
1860
1861static int int_initio_scsi_rst(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001862{
Alan Cox72d39fe2007-05-21 15:06:43 +01001863 struct scsi_ctrl_blk *scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001864 int i;
1865
1866 /* if DMA xfer is pending, abort DMA xfer */
Alan Cox72d39fe2007-05-21 15:06:43 +01001867 if (inb(host->addr + TUL_XStatus) & 0x01) {
1868 outb(TAX_X_ABT | TAX_X_CLR_FIFO, host->addr + TUL_XCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001869 /* wait Abort DMA xfer done */
Alan Cox72d39fe2007-05-21 15:06:43 +01001870 while ((inb(host->addr + TUL_Int) & 0x04) == 0)
1871 cpu_relax();
1872 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001873 }
1874 /* Abort all active & disconnected scb */
Alan Cox72d39fe2007-05-21 15:06:43 +01001875 while ((scb = initio_pop_busy_scb(host)) != NULL) {
1876 scb->hastat = HOST_BAD_PHAS;
1877 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001878 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001879 host->active = NULL;
1880 host->active_tc = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001881
1882 /* clr sync nego. done flag */
Alan Cox72d39fe2007-05-21 15:06:43 +01001883 for (i = 0; i < host->max_tar; i++)
1884 host->targets[i].flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
1885 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001886}
1887
Alan Cox72d39fe2007-05-21 15:06:43 +01001888/**
Lee Jones100ec492021-03-17 09:12:04 +00001889 * int_initio_resel - Reselection occurred
Alan Cox72d39fe2007-05-21 15:06:43 +01001890 * @host: InitIO host adapter
1891 *
1892 * A SCSI reselection event has been signalled and the interrupt
1893 * is now being processed. Work out which command block needs attention
1894 * and continue processing that command.
1895 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001896
Alan Cox72d39fe2007-05-21 15:06:43 +01001897int int_initio_resel(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001898{
Alan Cox72d39fe2007-05-21 15:06:43 +01001899 struct scsi_ctrl_blk *scb;
1900 struct target_control *active_tc;
1901 u8 tag, msg = 0;
1902 u8 tar, lun;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001903
Alan Cox72d39fe2007-05-21 15:06:43 +01001904 if ((scb = host->active) != NULL) {
1905 /* FIXME: Why check and not just clear ? */
1906 if (scb->status & SCB_SELECT) /* if waiting for selection complete */
1907 scb->status &= ~SCB_SELECT;
1908 host->active = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001909 }
1910 /* --------- get target id---------------------- */
Alan Cox72d39fe2007-05-21 15:06:43 +01001911 tar = inb(host->addr + TUL_SBusId);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001912 /* ------ get LUN from Identify message----------- */
Alan Cox72d39fe2007-05-21 15:06:43 +01001913 lun = inb(host->addr + TUL_SIdent) & 0x0F;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001914 /* 07/22/98 from 0x1F -> 0x0F */
Alan Cox72d39fe2007-05-21 15:06:43 +01001915 active_tc = &host->targets[tar];
1916 host->active_tc = active_tc;
1917 outb(active_tc->sconfig0, host->addr + TUL_SConfig);
1918 outb(active_tc->js_period, host->addr + TUL_SPeriod);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001919
1920 /* ------------- tag queueing ? ------------------- */
Alan Cox72d39fe2007-05-21 15:06:43 +01001921 if (active_tc->drv_flags & TCF_DRV_EN_TAG) {
1922 if ((initio_msgin_accept(host)) == -1)
1923 return -1;
1924 if (host->phase != MSG_IN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001925 goto no_tag;
Alan Cox72d39fe2007-05-21 15:06:43 +01001926 outl(1, host->addr + TUL_SCnt0);
1927 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
1928 if (wait_tulip(host) == -1)
1929 return -1;
1930 msg = inb(host->addr + TUL_SFifo); /* Read Tag Message */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001931
Hannes Reinecke9df17f462021-01-13 10:04:46 +01001932 if (msg < SIMPLE_QUEUE_TAG || msg > ORDERED_QUEUE_TAG)
1933 /* Is simple Tag */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001934 goto no_tag;
1935
Alan Cox72d39fe2007-05-21 15:06:43 +01001936 if (initio_msgin_accept(host) == -1)
1937 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001938
Alan Cox72d39fe2007-05-21 15:06:43 +01001939 if (host->phase != MSG_IN)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001940 goto no_tag;
1941
Alan Cox72d39fe2007-05-21 15:06:43 +01001942 outl(1, host->addr + TUL_SCnt0);
1943 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
1944 if (wait_tulip(host) == -1)
1945 return -1;
1946 tag = inb(host->addr + TUL_SFifo); /* Read Tag ID */
1947 scb = host->scb + tag;
1948 if (scb->target != tar || scb->lun != lun) {
1949 return initio_msgout_abort_tag(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001950 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001951 if (scb->status != SCB_BUSY) { /* 03/24/95 */
1952 return initio_msgout_abort_tag(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001953 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001954 host->active = scb;
1955 if ((initio_msgin_accept(host)) == -1)
1956 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001957 } else { /* No tag */
1958 no_tag:
Alan Cox72d39fe2007-05-21 15:06:43 +01001959 if ((scb = initio_find_busy_scb(host, tar | (lun << 8))) == NULL) {
1960 return initio_msgout_abort_targ(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001961 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001962 host->active = scb;
1963 if (!(active_tc->drv_flags & TCF_DRV_EN_TAG)) {
1964 if ((initio_msgin_accept(host)) == -1)
1965 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001966 }
1967 }
1968 return 0;
1969}
1970
Alan Cox72d39fe2007-05-21 15:06:43 +01001971/**
1972 * int_initio_bad_seq - out of phase
1973 * @host: InitIO host flagging event
1974 *
1975 * We have ended up out of phase somehow. Reset the host controller
1976 * and throw all our toys out of the pram. Let the midlayer clean up
1977 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07001978
Alan Cox72d39fe2007-05-21 15:06:43 +01001979static int int_initio_bad_seq(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07001980{ /* target wrong phase */
Alan Cox72d39fe2007-05-21 15:06:43 +01001981 struct scsi_ctrl_blk *scb;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001982 int i;
1983
Alan Cox72d39fe2007-05-21 15:06:43 +01001984 initio_reset_scsi(host, 10);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001985
Alan Cox72d39fe2007-05-21 15:06:43 +01001986 while ((scb = initio_pop_busy_scb(host)) != NULL) {
1987 scb->hastat = HOST_BAD_PHAS;
1988 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001989 }
Alan Cox72d39fe2007-05-21 15:06:43 +01001990 for (i = 0; i < host->max_tar; i++)
1991 host->targets[i].flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
1992 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07001993}
1994
1995
Alan Cox72d39fe2007-05-21 15:06:43 +01001996/**
1997 * initio_msgout_abort_targ - abort a tag
1998 * @host: InitIO host
1999 *
2000 * Abort when the target/lun does not match or when our SCB is not
2001 * busy. Used by untagged commands.
2002 */
2003
2004static int initio_msgout_abort_targ(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002005{
2006
Alan Cox72d39fe2007-05-21 15:06:43 +01002007 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2008 if (initio_msgin_accept(host) == -1)
2009 return -1;
2010 if (host->phase != MSG_OUT)
2011 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002012
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002013 outb(ABORT_TASK_SET, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002014 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002015
Alan Cox72d39fe2007-05-21 15:06:43 +01002016 return initio_wait_disc(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002017}
2018
Alan Cox72d39fe2007-05-21 15:06:43 +01002019/**
2020 * initio_msgout_abort_tag - abort a tag
2021 * @host: InitIO host
2022 *
2023 * Abort when the target/lun does not match or when our SCB is not
2024 * busy. Used for tagged commands.
2025 */
2026
2027static int initio_msgout_abort_tag(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002028{
2029
Alan Cox72d39fe2007-05-21 15:06:43 +01002030 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2031 if (initio_msgin_accept(host) == -1)
2032 return -1;
2033 if (host->phase != MSG_OUT)
2034 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002035
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002036 outb(ABORT_TASK, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002037 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002038
Alan Cox72d39fe2007-05-21 15:06:43 +01002039 return initio_wait_disc(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002040
2041}
2042
Alan Cox72d39fe2007-05-21 15:06:43 +01002043/**
2044 * initio_msgin - Message in
2045 * @host: InitIO Host
2046 *
2047 * Process incoming message
2048 */
2049static int initio_msgin(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002050{
Alan Cox72d39fe2007-05-21 15:06:43 +01002051 struct target_control *active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002052
2053 for (;;) {
Alan Cox72d39fe2007-05-21 15:06:43 +01002054 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002055
Alan Cox72d39fe2007-05-21 15:06:43 +01002056 outl(1, host->addr + TUL_SCnt0);
2057 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
2058 if (wait_tulip(host) == -1)
2059 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002060
Alan Cox72d39fe2007-05-21 15:06:43 +01002061 switch (inb(host->addr + TUL_SFifo)) {
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002062 case DISCONNECT: /* Disconnect msg */
Alan Cox72d39fe2007-05-21 15:06:43 +01002063 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
2064 return initio_wait_disc(host);
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002065 case SAVE_POINTERS:
2066 case RESTORE_POINTERS:
2067 case NOP:
Alan Cox72d39fe2007-05-21 15:06:43 +01002068 initio_msgin_accept(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002069 break;
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002070 case MESSAGE_REJECT: /* Clear ATN first */
Alan Cox72d39fe2007-05-21 15:06:43 +01002071 outb((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)),
2072 host->addr + TUL_SSignal);
2073 active_tc = host->active_tc;
2074 if ((active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0) /* do sync nego */
2075 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN),
2076 host->addr + TUL_SSignal);
2077 initio_msgin_accept(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002078 break;
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002079 case EXTENDED_MESSAGE: /* extended msg */
Alan Cox72d39fe2007-05-21 15:06:43 +01002080 initio_msgin_extend(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002081 break;
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002082 case IGNORE_WIDE_RESIDUE:
Alan Cox72d39fe2007-05-21 15:06:43 +01002083 initio_msgin_accept(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002084 break;
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002085 case COMMAND_COMPLETE:
Alan Cox72d39fe2007-05-21 15:06:43 +01002086 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
2087 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
2088 return initio_wait_done_disc(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002089 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01002090 initio_msgout_reject(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002091 break;
2092 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002093 if (host->phase != MSG_IN)
2094 return host->phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002095 }
2096 /* statement won't reach here */
2097}
2098
Alan Cox72d39fe2007-05-21 15:06:43 +01002099static int initio_msgout_reject(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002100{
Alan Cox72d39fe2007-05-21 15:06:43 +01002101 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002102
Alan Cox72d39fe2007-05-21 15:06:43 +01002103 if (initio_msgin_accept(host) == -1)
2104 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002105
Alan Cox72d39fe2007-05-21 15:06:43 +01002106 if (host->phase == MSG_OUT) {
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002107 outb(MESSAGE_REJECT, host->addr + TUL_SFifo); /* Msg reject */
Alan Cox72d39fe2007-05-21 15:06:43 +01002108 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2109 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002110 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002111 return host->phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002112}
2113
Alan Cox72d39fe2007-05-21 15:06:43 +01002114static int initio_msgout_ide(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002115{
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002116 outb(INITIATOR_ERROR, host->addr + TUL_SFifo); /* Initiator Detected Error */
Alan Cox72d39fe2007-05-21 15:06:43 +01002117 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2118 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002119}
2120
Alan Cox72d39fe2007-05-21 15:06:43 +01002121static int initio_msgin_extend(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002122{
Alan Cox72d39fe2007-05-21 15:06:43 +01002123 u8 len, idx;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002124
Alan Cox72d39fe2007-05-21 15:06:43 +01002125 if (initio_msgin_accept(host) != MSG_IN)
2126 return host->phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002127
2128 /* Get extended msg length */
Alan Cox72d39fe2007-05-21 15:06:43 +01002129 outl(1, host->addr + TUL_SCnt0);
2130 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
2131 if (wait_tulip(host) == -1)
2132 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002133
Alan Cox72d39fe2007-05-21 15:06:43 +01002134 len = inb(host->addr + TUL_SFifo);
2135 host->msg[0] = len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002136 for (idx = 1; len != 0; len--) {
2137
Alan Cox72d39fe2007-05-21 15:06:43 +01002138 if ((initio_msgin_accept(host)) != MSG_IN)
2139 return host->phase;
2140 outl(1, host->addr + TUL_SCnt0);
2141 outb(TSC_XF_FIFO_IN, host->addr + TUL_SCmd);
2142 if (wait_tulip(host) == -1)
2143 return -1;
2144 host->msg[idx++] = inb(host->addr + TUL_SFifo);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002145 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002146 if (host->msg[1] == 1) { /* if it's synchronous data transfer request */
2147 u8 r;
2148 if (host->msg[0] != 3) /* if length is not right */
2149 return initio_msgout_reject(host);
2150 if (host->active_tc->flags & TCF_NO_SYNC_NEGO) { /* Set OFFSET=0 to do async, nego back */
2151 host->msg[3] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002152 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002153 if (initio_msgin_sync(host) == 0 &&
2154 (host->active_tc->flags & TCF_SYNC_DONE)) {
2155 initio_sync_done(host);
2156 return initio_msgin_accept(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002157 }
2158 }
2159
Alan Cox72d39fe2007-05-21 15:06:43 +01002160 r = inb(host->addr + TUL_SSignal);
2161 outb((r & (TSC_SET_ACK | 7)) | TSC_SET_ATN,
2162 host->addr + TUL_SSignal);
2163 if (initio_msgin_accept(host) != MSG_OUT)
2164 return host->phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002165 /* sync msg out */
Alan Cox72d39fe2007-05-21 15:06:43 +01002166 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002167
Alan Cox72d39fe2007-05-21 15:06:43 +01002168 initio_sync_done(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002169
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002170 outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002171 outb(3, host->addr + TUL_SFifo);
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002172 outb(EXTENDED_SDTR, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002173 outb(host->msg[2], host->addr + TUL_SFifo);
2174 outb(host->msg[3], host->addr + TUL_SFifo);
2175 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2176 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002177 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002178 if (host->msg[0] != 2 || host->msg[1] != 3)
2179 return initio_msgout_reject(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002180 /* if it's WIDE DATA XFER REQ */
Alan Cox72d39fe2007-05-21 15:06:43 +01002181 if (host->active_tc->flags & TCF_NO_WDTR) {
2182 host->msg[2] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002183 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002184 if (host->msg[2] > 2) /* > 32 bits */
2185 return initio_msgout_reject(host);
2186 if (host->msg[2] == 2) { /* == 32 */
2187 host->msg[2] = 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002188 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002189 if ((host->active_tc->flags & TCF_NO_WDTR) == 0) {
2190 wdtr_done(host);
2191 if ((host->active_tc->flags & (TCF_SYNC_DONE | TCF_NO_SYNC_NEGO)) == 0)
2192 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
2193 return initio_msgin_accept(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002194 }
2195 }
2196 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002197 outb(((inb(host->addr + TUL_SSignal) & (TSC_SET_ACK | 7)) | TSC_SET_ATN), host->addr + TUL_SSignal);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002198
Alan Cox72d39fe2007-05-21 15:06:43 +01002199 if (initio_msgin_accept(host) != MSG_OUT)
2200 return host->phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002201 /* WDTR msg out */
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002202 outb(EXTENDED_MESSAGE, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002203 outb(2, host->addr + TUL_SFifo);
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002204 outb(EXTENDED_WDTR, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002205 outb(host->msg[2], host->addr + TUL_SFifo);
2206 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2207 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002208}
2209
Alan Cox72d39fe2007-05-21 15:06:43 +01002210static int initio_msgin_sync(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002211{
2212 char default_period;
2213
Alan Cox72d39fe2007-05-21 15:06:43 +01002214 default_period = initio_rate_tbl[host->active_tc->flags & TCF_SCSI_RATE];
2215 if (host->msg[3] > MAX_OFFSET) {
2216 host->msg[3] = MAX_OFFSET;
2217 if (host->msg[2] < default_period) {
2218 host->msg[2] = default_period;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002219 return 1;
2220 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002221 if (host->msg[2] >= 59) /* Change to async */
2222 host->msg[3] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002223 return 1;
2224 }
2225 /* offset requests asynchronous transfers ? */
Alan Cox72d39fe2007-05-21 15:06:43 +01002226 if (host->msg[3] == 0) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002227 return 0;
2228 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002229 if (host->msg[2] < default_period) {
2230 host->msg[2] = default_period;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002231 return 1;
2232 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002233 if (host->msg[2] >= 59) {
2234 host->msg[3] = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002235 return 1;
2236 }
2237 return 0;
2238}
2239
Alan Cox72d39fe2007-05-21 15:06:43 +01002240static int wdtr_done(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002241{
Alan Cox72d39fe2007-05-21 15:06:43 +01002242 host->active_tc->flags &= ~TCF_SYNC_DONE;
2243 host->active_tc->flags |= TCF_WDTR_DONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002244
Alan Cox72d39fe2007-05-21 15:06:43 +01002245 host->active_tc->js_period = 0;
2246 if (host->msg[2]) /* if 16 bit */
2247 host->active_tc->js_period |= TSC_WIDE_SCSI;
2248 host->active_tc->sconfig0 &= ~TSC_ALT_PERIOD;
2249 outb(host->active_tc->sconfig0, host->addr + TUL_SConfig);
2250 outb(host->active_tc->js_period, host->addr + TUL_SPeriod);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002251
2252 return 1;
2253}
2254
Alan Cox72d39fe2007-05-21 15:06:43 +01002255static int initio_sync_done(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002256{
2257 int i;
2258
Alan Cox72d39fe2007-05-21 15:06:43 +01002259 host->active_tc->flags |= TCF_SYNC_DONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002260
Alan Cox72d39fe2007-05-21 15:06:43 +01002261 if (host->msg[3]) {
2262 host->active_tc->js_period |= host->msg[3];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002263 for (i = 0; i < 8; i++) {
Alan Cox72d39fe2007-05-21 15:06:43 +01002264 if (initio_rate_tbl[i] >= host->msg[2]) /* pick the big one */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002265 break;
2266 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002267 host->active_tc->js_period |= (i << 4);
2268 host->active_tc->sconfig0 |= TSC_ALT_PERIOD;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002269 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002270 outb(host->active_tc->sconfig0, host->addr + TUL_SConfig);
2271 outb(host->active_tc->js_period, host->addr + TUL_SPeriod);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002272
Alan Cox72d39fe2007-05-21 15:06:43 +01002273 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002274}
2275
2276
Alan Cox72d39fe2007-05-21 15:06:43 +01002277static int initio_post_scsi_rst(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002278{
Alan Cox72d39fe2007-05-21 15:06:43 +01002279 struct scsi_ctrl_blk *scb;
2280 struct target_control *active_tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002281 int i;
2282
Alan Cox72d39fe2007-05-21 15:06:43 +01002283 host->active = NULL;
2284 host->active_tc = NULL;
2285 host->flags = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002286
Alan Cox72d39fe2007-05-21 15:06:43 +01002287 while ((scb = initio_pop_busy_scb(host)) != NULL) {
2288 scb->hastat = HOST_BAD_PHAS;
2289 initio_append_done_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002290 }
2291 /* clear sync done flag */
Alan Cox72d39fe2007-05-21 15:06:43 +01002292 active_tc = &host->targets[0];
2293 for (i = 0; i < host->max_tar; active_tc++, i++) {
2294 active_tc->flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002295 /* Initialize the sync. xfer register values to an asyn xfer */
Alan Cox72d39fe2007-05-21 15:06:43 +01002296 active_tc->js_period = 0;
2297 active_tc->sconfig0 = host->sconf1;
2298 host->act_tags[0] = 0; /* 07/22/98 */
2299 host->targets[i].flags &= ~TCF_BUSY; /* 07/22/98 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002300 } /* for */
2301
Alan Cox72d39fe2007-05-21 15:06:43 +01002302 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002303}
2304
Alan Cox72d39fe2007-05-21 15:06:43 +01002305static void initio_select_atn_stop(struct initio_host * host, struct scsi_ctrl_blk * scb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002306{
Alan Cox72d39fe2007-05-21 15:06:43 +01002307 scb->status |= SCB_SELECT;
2308 scb->next_state = 0x1;
2309 host->active = scb;
2310 host->active_tc = &host->targets[scb->target];
2311 outb(TSC_SELATNSTOP, host->addr + TUL_SCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002312}
2313
2314
Alan Cox72d39fe2007-05-21 15:06:43 +01002315static void initio_select_atn(struct initio_host * host, struct scsi_ctrl_blk * scb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002316{
2317 int i;
2318
Alan Cox72d39fe2007-05-21 15:06:43 +01002319 scb->status |= SCB_SELECT;
2320 scb->next_state = 0x2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002321
Alan Cox72d39fe2007-05-21 15:06:43 +01002322 outb(scb->ident, host->addr + TUL_SFifo);
2323 for (i = 0; i < (int) scb->cdblen; i++)
2324 outb(scb->cdb[i], host->addr + TUL_SFifo);
2325 host->active_tc = &host->targets[scb->target];
2326 host->active = scb;
2327 outb(TSC_SEL_ATN, host->addr + TUL_SCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002328}
2329
Alan Cox72d39fe2007-05-21 15:06:43 +01002330static void initio_select_atn3(struct initio_host * host, struct scsi_ctrl_blk * scb)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002331{
2332 int i;
2333
Alan Cox72d39fe2007-05-21 15:06:43 +01002334 scb->status |= SCB_SELECT;
2335 scb->next_state = 0x2;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002336
Alan Cox72d39fe2007-05-21 15:06:43 +01002337 outb(scb->ident, host->addr + TUL_SFifo);
2338 outb(scb->tagmsg, host->addr + TUL_SFifo);
2339 outb(scb->tagid, host->addr + TUL_SFifo);
2340 for (i = 0; i < scb->cdblen; i++)
2341 outb(scb->cdb[i], host->addr + TUL_SFifo);
2342 host->active_tc = &host->targets[scb->target];
2343 host->active = scb;
2344 outb(TSC_SEL_ATN3, host->addr + TUL_SCmd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002345}
2346
Alan Cox72d39fe2007-05-21 15:06:43 +01002347/**
2348 * initio_bus_device_reset - SCSI Bus Device Reset
2349 * @host: InitIO host to reset
2350 *
2351 * Perform a device reset and abort all pending SCBs for the
2352 * victim device
2353 */
2354int initio_bus_device_reset(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002355{
Alan Cox72d39fe2007-05-21 15:06:43 +01002356 struct scsi_ctrl_blk *scb = host->active;
2357 struct target_control *active_tc = host->active_tc;
2358 struct scsi_ctrl_blk *tmp, *prev;
2359 u8 tar;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002360
Alan Cox72d39fe2007-05-21 15:06:43 +01002361 if (host->phase != MSG_OUT)
2362 return int_initio_bad_seq(host); /* Unexpected phase */
2363
2364 initio_unlink_pend_scb(host, scb);
2365 initio_release_scb(host, scb);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002366
2367
Alan Cox72d39fe2007-05-21 15:06:43 +01002368 tar = scb->target; /* target */
2369 active_tc->flags &= ~(TCF_SYNC_DONE | TCF_WDTR_DONE | TCF_BUSY);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002370 /* clr sync. nego & WDTR flags 07/22/98 */
2371
2372 /* abort all SCB with same target */
Alan Cox72d39fe2007-05-21 15:06:43 +01002373 prev = tmp = host->first_busy; /* Check Busy queue */
2374 while (tmp != NULL) {
2375 if (tmp->target == tar) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002376 /* unlink it */
Alan Cox72d39fe2007-05-21 15:06:43 +01002377 if (tmp == host->first_busy) {
2378 if ((host->first_busy = tmp->next) == NULL)
2379 host->last_busy = NULL;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002380 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002381 prev->next = tmp->next;
2382 if (tmp == host->last_busy)
2383 host->last_busy = prev;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002384 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002385 tmp->hastat = HOST_ABORTED;
2386 initio_append_done_scb(host, tmp);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002387 }
2388 /* Previous haven't change */
2389 else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002390 prev = tmp;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002391 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002392 tmp = tmp->next;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002393 }
Hannes Reinecke9df17f462021-01-13 10:04:46 +01002394 outb(TARGET_RESET, host->addr + TUL_SFifo);
Alan Cox72d39fe2007-05-21 15:06:43 +01002395 outb(TSC_XF_FIFO_OUT, host->addr + TUL_SCmd);
2396 return initio_wait_disc(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002397
2398}
2399
Alan Cox72d39fe2007-05-21 15:06:43 +01002400static int initio_msgin_accept(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002401{
Alan Cox72d39fe2007-05-21 15:06:43 +01002402 outb(TSC_MSG_ACCEPT, host->addr + TUL_SCmd);
2403 return wait_tulip(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002404}
2405
Alan Cox72d39fe2007-05-21 15:06:43 +01002406static int wait_tulip(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002407{
2408
Alan Cox72d39fe2007-05-21 15:06:43 +01002409 while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0))
2410 & TSS_INT_PENDING))
2411 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002412
Alan Cox72d39fe2007-05-21 15:06:43 +01002413 host->jsint = inb(host->addr + TUL_SInt);
2414 host->phase = host->jsstatus0 & TSS_PH_MASK;
2415 host->jsstatus1 = inb(host->addr + TUL_SStatus1);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002416
Alan Cox72d39fe2007-05-21 15:06:43 +01002417 if (host->jsint & TSS_RESEL_INT) /* if SCSI bus reset detected */
2418 return int_initio_resel(host);
2419 if (host->jsint & TSS_SEL_TIMEOUT) /* if selected/reselected timeout interrupt */
2420 return int_initio_busfree(host);
2421 if (host->jsint & TSS_SCSIRST_INT) /* if SCSI bus reset detected */
2422 return int_initio_scsi_rst(host);
2423
2424 if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
2425 if (host->flags & HCF_EXPECT_DONE_DISC) {
2426 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
2427 initio_unlink_busy_scb(host, host->active);
2428 host->active->hastat = 0;
2429 initio_append_done_scb(host, host->active);
2430 host->active = NULL;
2431 host->active_tc = NULL;
2432 host->flags &= ~HCF_EXPECT_DONE_DISC;
2433 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2434 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
2435 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002436 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002437 if (host->flags & HCF_EXPECT_DISC) {
2438 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
2439 host->active = NULL;
2440 host->active_tc = NULL;
2441 host->flags &= ~HCF_EXPECT_DISC;
2442 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2443 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
2444 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002445 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002446 return int_initio_busfree(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002447 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002448 /* The old code really does the below. Can probably be removed */
2449 if (host->jsint & (TSS_FUNC_COMP | TSS_BUS_SERV))
2450 return host->phase;
2451 return host->phase;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002452}
Alan Cox72d39fe2007-05-21 15:06:43 +01002453
2454static int initio_wait_disc(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002455{
Alan Cox72d39fe2007-05-21 15:06:43 +01002456 while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0)) & TSS_INT_PENDING))
2457 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002458
Alan Cox72d39fe2007-05-21 15:06:43 +01002459 host->jsint = inb(host->addr + TUL_SInt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002460
Alan Cox72d39fe2007-05-21 15:06:43 +01002461 if (host->jsint & TSS_SCSIRST_INT) /* if SCSI bus reset detected */
2462 return int_initio_scsi_rst(host);
2463 if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
2464 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
2465 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2466 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
2467 host->active = NULL;
2468 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002469 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002470 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002471}
2472
Alan Cox72d39fe2007-05-21 15:06:43 +01002473static int initio_wait_done_disc(struct initio_host * host)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002474{
Alan Cox72d39fe2007-05-21 15:06:43 +01002475 while (!((host->jsstatus0 = inb(host->addr + TUL_SStatus0))
2476 & TSS_INT_PENDING))
2477 cpu_relax();
Linus Torvalds1da177e2005-04-16 15:20:36 -07002478
Alan Cox72d39fe2007-05-21 15:06:43 +01002479 host->jsint = inb(host->addr + TUL_SInt);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002480
Alan Cox72d39fe2007-05-21 15:06:43 +01002481 if (host->jsint & TSS_SCSIRST_INT) /* if SCSI bus reset detected */
2482 return int_initio_scsi_rst(host);
2483 if (host->jsint & TSS_DISC_INT) { /* BUS disconnection */
2484 outb(TSC_FLUSH_FIFO, host->addr + TUL_SCtrl0); /* Flush SCSI FIFO */
2485 outb(TSC_INITDEFAULT, host->addr + TUL_SConfig);
2486 outb(TSC_HW_RESELECT, host->addr + TUL_SCtrl1); /* Enable HW reselect */
2487 initio_unlink_busy_scb(host, host->active);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002488
Alan Cox72d39fe2007-05-21 15:06:43 +01002489 initio_append_done_scb(host, host->active);
2490 host->active = NULL;
2491 return -1;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002492 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002493 return initio_bad_seq(host);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002494}
2495
Alan Cox72d39fe2007-05-21 15:06:43 +01002496/**
2497 * i91u_intr - IRQ handler
2498 * @irqno: IRQ number
2499 * @dev_id: IRQ identifier
2500 *
2501 * Take the relevant locks and then invoke the actual isr processing
2502 * code under the lock.
2503 */
2504
David Howells7d12e782006-10-05 14:55:46 +01002505static irqreturn_t i91u_intr(int irqno, void *dev_id)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002506{
2507 struct Scsi_Host *dev = dev_id;
2508 unsigned long flags;
Alan Cox72d39fe2007-05-21 15:06:43 +01002509 int r;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002510
2511 spin_lock_irqsave(dev->host_lock, flags);
Alan Cox72d39fe2007-05-21 15:06:43 +01002512 r = initio_isr((struct initio_host *)dev->hostdata);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002513 spin_unlock_irqrestore(dev->host_lock, flags);
Alan Cox72d39fe2007-05-21 15:06:43 +01002514 if (r)
2515 return IRQ_HANDLED;
2516 else
2517 return IRQ_NONE;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002518}
2519
Linus Torvalds1da177e2005-04-16 15:20:36 -07002520
Alan Cox72d39fe2007-05-21 15:06:43 +01002521/**
2522 * initio_build_scb - Build the mappings and SCB
2523 * @host: InitIO host taking the command
2524 * @cblk: Firmware command block
2525 * @cmnd: SCSI midlayer command block
2526 *
2527 * Translate the abstract SCSI command into a firmware command block
2528 * suitable for feeding to the InitIO host controller. This also requires
2529 * we build the scatter gather lists and ensure they are mapped properly.
2530 */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002531
Alan Cox72d39fe2007-05-21 15:06:43 +01002532static void initio_build_scb(struct initio_host * host, struct scsi_ctrl_blk * cblk, struct scsi_cmnd * cmnd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002533{ /* Create corresponding SCB */
Alan Cox72d39fe2007-05-21 15:06:43 +01002534 struct scatterlist *sglist;
2535 struct sg_entry *sg; /* Pointer to SG list */
FUJITA Tomonoria258c852007-05-21 14:58:30 +09002536 int i, nseg;
Alan Cox72d39fe2007-05-21 15:06:43 +01002537 long total_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002538 dma_addr_t dma_addr;
2539
Alan Cox72d39fe2007-05-21 15:06:43 +01002540 /* Fill in the command headers */
2541 cblk->post = i91uSCBPost; /* i91u's callback routine */
2542 cblk->srb = cmnd;
2543 cblk->opcode = ExecSCSI;
2544 cblk->flags = SCF_POST; /* After SCSI done, call post routine */
2545 cblk->target = cmnd->device->id;
2546 cblk->lun = cmnd->device->lun;
2547 cblk->ident = cmnd->device->lun | DISC_ALLOW;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002548
Alan Cox72d39fe2007-05-21 15:06:43 +01002549 cblk->flags |= SCF_SENSE; /* Turn on auto request sense */
2550
2551 /* Map the sense buffer into bus memory */
2552 dma_addr = dma_map_single(&host->pci_dev->dev, cmnd->sense_buffer,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002553 SENSE_SIZE, DMA_FROM_DEVICE);
Grant Grundler423eef62008-04-05 10:14:22 -06002554 cblk->senseptr = (u32)dma_addr;
2555 cblk->senselen = SENSE_SIZE;
Alan Cox72d39fe2007-05-21 15:06:43 +01002556 cmnd->SCp.ptr = (char *)(unsigned long)dma_addr;
2557 cblk->cdblen = cmnd->cmd_len;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002558
Alan Cox72d39fe2007-05-21 15:06:43 +01002559 /* Clear the returned status */
2560 cblk->hastat = 0;
2561 cblk->tastat = 0;
2562 /* Command the command */
Boaz Harrosh64a87b22008-04-30 11:19:47 +03002563 memcpy(cblk->cdb, cmnd->cmnd, cmnd->cmd_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002564
Alan Cox72d39fe2007-05-21 15:06:43 +01002565 /* Set up tags */
2566 if (cmnd->device->tagged_supported) { /* Tag Support */
2567 cblk->tagmsg = SIMPLE_QUEUE_TAG; /* Do simple tag only */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002568 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002569 cblk->tagmsg = 0; /* No tag support */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002570 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002571
Linus Torvalds1da177e2005-04-16 15:20:36 -07002572 /* todo handle map_sg error */
FUJITA Tomonoria258c852007-05-21 14:58:30 +09002573 nseg = scsi_dma_map(cmnd);
2574 BUG_ON(nseg < 0);
2575 if (nseg) {
Alan Cox72d39fe2007-05-21 15:06:43 +01002576 dma_addr = dma_map_single(&host->pci_dev->dev, &cblk->sglist[0],
2577 sizeof(struct sg_entry) * TOTAL_SG_ENTRY,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002578 DMA_BIDIRECTIONAL);
Grant Grundler423eef62008-04-05 10:14:22 -06002579 cblk->bufptr = (u32)dma_addr;
Alan Cox72d39fe2007-05-21 15:06:43 +01002580 cmnd->SCp.dma_handle = dma_addr;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002581
Stuart Swalese2d435e2008-01-23 20:00:48 +00002582 cblk->sglen = nseg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002583
Alan Cox72d39fe2007-05-21 15:06:43 +01002584 cblk->flags |= SCF_SG; /* Turn on SG list flag */
FUJITA Tomonoria258c852007-05-21 14:58:30 +09002585 total_len = 0;
2586 sg = &cblk->sglist[0];
2587 scsi_for_each_sg(cmnd, sglist, cblk->sglen, i) {
Alan Cox72d39fe2007-05-21 15:06:43 +01002588 sg->data = cpu_to_le32((u32)sg_dma_address(sglist));
Grant Grundler423eef62008-04-05 10:14:22 -06002589 sg->len = cpu_to_le32((u32)sg_dma_len(sglist));
2590 total_len += sg_dma_len(sglist);
Boaz Harrosha169e632007-12-17 18:08:59 +02002591 ++sg;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002592 }
2593
FUJITA Tomonoria258c852007-05-21 14:58:30 +09002594 cblk->buflen = (scsi_bufflen(cmnd) > total_len) ?
2595 total_len : scsi_bufflen(cmnd);
Alan Cox72d39fe2007-05-21 15:06:43 +01002596 } else { /* No data transfer required */
2597 cblk->buflen = 0;
2598 cblk->sglen = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002599 }
2600}
2601
Alan Cox72d39fe2007-05-21 15:06:43 +01002602/**
Lee Jones100ec492021-03-17 09:12:04 +00002603 * i91u_queuecommand_lck - Queue a new command if possible
Alan Cox72d39fe2007-05-21 15:06:43 +01002604 * @cmd: SCSI command block from the mid layer
2605 * @done: Completion handler
2606 *
2607 * Attempts to queue a new command with the host adapter. Will return
2608 * zero if successful or indicate a host busy condition if not (which
2609 * will cause the mid layer to call us again later with the command)
2610 */
2611
Jeff Garzikf2812332010-11-16 02:10:29 -05002612static int i91u_queuecommand_lck(struct scsi_cmnd *cmd,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002613 void (*done)(struct scsi_cmnd *))
2614{
Alan Cox72d39fe2007-05-21 15:06:43 +01002615 struct initio_host *host = (struct initio_host *) cmd->device->host->hostdata;
2616 struct scsi_ctrl_blk *cmnd;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002617
2618 cmd->scsi_done = done;
2619
Alan Cox72d39fe2007-05-21 15:06:43 +01002620 cmnd = initio_alloc_scb(host);
2621 if (!cmnd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002622 return SCSI_MLQUEUE_HOST_BUSY;
2623
Alan Cox72d39fe2007-05-21 15:06:43 +01002624 initio_build_scb(host, cmnd, cmd);
2625 initio_exec_scb(host, cmnd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002626 return 0;
2627}
2628
Jeff Garzikf2812332010-11-16 02:10:29 -05002629static DEF_SCSI_QCMD(i91u_queuecommand)
2630
Alan Cox72d39fe2007-05-21 15:06:43 +01002631/**
2632 * i91u_bus_reset - reset the SCSI bus
2633 * @cmnd: Command block we want to trigger the reset for
2634 *
2635 * Initiate a SCSI bus reset sequence
Linus Torvalds1da177e2005-04-16 15:20:36 -07002636 */
Alan Cox72d39fe2007-05-21 15:06:43 +01002637
2638static int i91u_bus_reset(struct scsi_cmnd * cmnd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002639{
Alan Cox72d39fe2007-05-21 15:06:43 +01002640 struct initio_host *host;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002641
Alan Cox72d39fe2007-05-21 15:06:43 +01002642 host = (struct initio_host *) cmnd->device->host->hostdata;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002643
Alan Cox72d39fe2007-05-21 15:06:43 +01002644 spin_lock_irq(cmnd->device->host->host_lock);
2645 initio_reset_scsi(host, 0);
2646 spin_unlock_irq(cmnd->device->host->host_lock);
Jeff Garzik 68b3aa72005-05-28 07:56:31 -04002647
Linus Torvalds1da177e2005-04-16 15:20:36 -07002648 return SUCCESS;
2649}
2650
Alan Cox72d39fe2007-05-21 15:06:43 +01002651/**
Lee Jones100ec492021-03-17 09:12:04 +00002652 * i91u_biosparam - return the "logical geometry
Alan Cox72d39fe2007-05-21 15:06:43 +01002653 * @sdev: SCSI device
Lee Jones100ec492021-03-17 09:12:04 +00002654 * @dev: Matching block device
Alan Cox72d39fe2007-05-21 15:06:43 +01002655 * @capacity: Sector size of drive
2656 * @info_array: Return space for BIOS geometry
2657 *
2658 * Map the device geometry in a manner compatible with the host
2659 * controller BIOS behaviour.
2660 *
2661 * FIXME: limited to 2^32 sector devices.
Linus Torvalds1da177e2005-04-16 15:20:36 -07002662 */
Alan Cox72d39fe2007-05-21 15:06:43 +01002663
Linus Torvalds1da177e2005-04-16 15:20:36 -07002664static int i91u_biosparam(struct scsi_device *sdev, struct block_device *dev,
2665 sector_t capacity, int *info_array)
2666{
Alan Cox72d39fe2007-05-21 15:06:43 +01002667 struct initio_host *host; /* Point to Host adapter control block */
2668 struct target_control *tc;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002669
Alan Cox72d39fe2007-05-21 15:06:43 +01002670 host = (struct initio_host *) sdev->host->hostdata;
2671 tc = &host->targets[sdev->id];
Linus Torvalds1da177e2005-04-16 15:20:36 -07002672
Alan Cox72d39fe2007-05-21 15:06:43 +01002673 if (tc->heads) {
2674 info_array[0] = tc->heads;
2675 info_array[1] = tc->sectors;
2676 info_array[2] = (unsigned long)capacity / tc->heads / tc->sectors;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002677 } else {
Alan Cox72d39fe2007-05-21 15:06:43 +01002678 if (tc->drv_flags & TCF_DRV_255_63) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002679 info_array[0] = 255;
2680 info_array[1] = 63;
2681 info_array[2] = (unsigned long)capacity / 255 / 63;
2682 } else {
2683 info_array[0] = 64;
2684 info_array[1] = 32;
2685 info_array[2] = (unsigned long)capacity >> 11;
2686 }
2687 }
2688
2689#if defined(DEBUG_BIOSPARAM)
2690 if (i91u_debug & debug_biosparam) {
2691 printk("bios geometry: head=%d, sec=%d, cyl=%d\n",
2692 info_array[0], info_array[1], info_array[2]);
2693 printk("WARNING: check, if the bios geometry is correct.\n");
2694 }
2695#endif
2696
2697 return 0;
2698}
2699
Alan Cox72d39fe2007-05-21 15:06:43 +01002700/**
2701 * i91u_unmap_scb - Unmap a command
2702 * @pci_dev: PCI device the command is for
2703 * @cmnd: The command itself
2704 *
2705 * Unmap any PCI mapping/IOMMU resources allocated when the command
2706 * was mapped originally as part of initio_build_scb
2707 */
2708
2709static void i91u_unmap_scb(struct pci_dev *pci_dev, struct scsi_cmnd *cmnd)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002710{
2711 /* auto sense buffer */
2712 if (cmnd->SCp.ptr) {
2713 dma_unmap_single(&pci_dev->dev,
2714 (dma_addr_t)((unsigned long)cmnd->SCp.ptr),
2715 SENSE_SIZE, DMA_FROM_DEVICE);
2716 cmnd->SCp.ptr = NULL;
2717 }
2718
2719 /* request buffer */
FUJITA Tomonoria258c852007-05-21 14:58:30 +09002720 if (scsi_sg_count(cmnd)) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002721 dma_unmap_single(&pci_dev->dev, cmnd->SCp.dma_handle,
Alan Cox72d39fe2007-05-21 15:06:43 +01002722 sizeof(struct sg_entry) * TOTAL_SG_ENTRY,
Linus Torvalds1da177e2005-04-16 15:20:36 -07002723 DMA_BIDIRECTIONAL);
2724
FUJITA Tomonoria258c852007-05-21 14:58:30 +09002725 scsi_dma_unmap(cmnd);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002726 }
2727}
2728
Lee Jones100ec492021-03-17 09:12:04 +00002729/*
Alan Cox72d39fe2007-05-21 15:06:43 +01002730 * i91uSCBPost - SCSI callback
Alan Cox72d39fe2007-05-21 15:06:43 +01002731 *
2732 * This is callback routine be called when tulip finish one
2733 * SCSI command.
2734 */
2735
2736static void i91uSCBPost(u8 * host_mem, u8 * cblk_mem)
Linus Torvalds1da177e2005-04-16 15:20:36 -07002737{
Alan Cox72d39fe2007-05-21 15:06:43 +01002738 struct scsi_cmnd *cmnd; /* Pointer to SCSI request block */
2739 struct initio_host *host;
2740 struct scsi_ctrl_blk *cblk;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002741
Alan Cox72d39fe2007-05-21 15:06:43 +01002742 host = (struct initio_host *) host_mem;
2743 cblk = (struct scsi_ctrl_blk *) cblk_mem;
2744 if ((cmnd = cblk->srb) == NULL) {
2745 printk(KERN_ERR "i91uSCBPost: SRB pointer is empty\n");
2746 WARN_ON(1);
2747 initio_release_scb(host, cblk); /* Release SCB for current channel */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002748 return;
2749 }
Alan Cox72d39fe2007-05-21 15:06:43 +01002750
2751 /*
2752 * Remap the firmware error status into a mid layer one
2753 */
2754 switch (cblk->hastat) {
Linus Torvalds1da177e2005-04-16 15:20:36 -07002755 case 0x0:
2756 case 0xa: /* Linked command complete without error and linked normally */
2757 case 0xb: /* Linked command complete without error interrupt generated */
Alan Cox72d39fe2007-05-21 15:06:43 +01002758 cblk->hastat = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002759 break;
2760
2761 case 0x11: /* Selection time out-The initiator selection or target
2762 reselection was not complete within the SCSI Time out period */
Alan Cox72d39fe2007-05-21 15:06:43 +01002763 cblk->hastat = DID_TIME_OUT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002764 break;
2765
2766 case 0x14: /* Target bus phase sequence failure-An invalid bus phase or bus
2767 phase sequence was requested by the target. The host adapter
2768 will generate a SCSI Reset Condition, notifying the host with
2769 a SCRD interrupt */
Alan Cox72d39fe2007-05-21 15:06:43 +01002770 cblk->hastat = DID_RESET;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002771 break;
2772
2773 case 0x1a: /* SCB Aborted. 07/21/98 */
Alan Cox72d39fe2007-05-21 15:06:43 +01002774 cblk->hastat = DID_ABORT;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002775 break;
2776
2777 case 0x12: /* Data overrun/underrun-The target attempted to transfer more data
2778 than was allocated by the Data Length field or the sum of the
2779 Scatter / Gather Data Length fields. */
2780 case 0x13: /* Unexpected bus free-The target dropped the SCSI BSY at an unexpected time. */
2781 case 0x16: /* Invalid SCB Operation Code. */
2782
2783 default:
Alan Cox72d39fe2007-05-21 15:06:43 +01002784 printk("ini9100u: %x %x\n", cblk->hastat, cblk->tastat);
2785 cblk->hastat = DID_ERROR; /* Couldn't find any better */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002786 break;
2787 }
2788
Alan Cox72d39fe2007-05-21 15:06:43 +01002789 cmnd->result = cblk->tastat | (cblk->hastat << 16);
Alan Cox72d39fe2007-05-21 15:06:43 +01002790 i91u_unmap_scb(host->pci_dev, cmnd);
2791 cmnd->scsi_done(cmnd); /* Notify system DONE */
2792 initio_release_scb(host, cblk); /* Release SCB for current channel */
2793}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002794
Alan Cox72d39fe2007-05-21 15:06:43 +01002795static struct scsi_host_template initio_template = {
2796 .proc_name = "INI9100U",
2797 .name = "Initio INI-9X00U/UW SCSI device driver",
2798 .queuecommand = i91u_queuecommand,
2799 .eh_bus_reset_handler = i91u_bus_reset,
2800 .bios_param = i91u_biosparam,
2801 .can_queue = MAX_TARGETS * i91u_MAXQUEUE,
2802 .this_id = 1,
2803 .sg_tablesize = SG_ALL,
Alan Cox72d39fe2007-05-21 15:06:43 +01002804};
2805
2806static int initio_probe_one(struct pci_dev *pdev,
2807 const struct pci_device_id *id)
2808{
2809 struct Scsi_Host *shost;
2810 struct initio_host *host;
2811 u32 reg;
2812 u16 bios_seg;
2813 struct scsi_ctrl_blk *scb, *tmp, *prev = NULL /* silence gcc */;
2814 int num_scb, i, error;
2815
2816 error = pci_enable_device(pdev);
2817 if (error)
2818 return error;
2819
2820 pci_read_config_dword(pdev, 0x44, (u32 *) & reg);
2821 bios_seg = (u16) (reg & 0xFF);
2822 if (((reg & 0xFF00) >> 8) == 0xFF)
2823 reg = 0;
2824 bios_seg = (bios_seg << 8) + ((u16) ((reg & 0xFF00) >> 8));
2825
Christoph Hellwig663b4112018-10-18 15:10:19 +02002826 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(32))) {
Alan Cox72d39fe2007-05-21 15:06:43 +01002827 printk(KERN_WARNING "i91u: Could not set 32 bit DMA mask\n");
2828 error = -ENODEV;
2829 goto out_disable_device;
2830 }
2831 shost = scsi_host_alloc(&initio_template, sizeof(struct initio_host));
2832 if (!shost) {
2833 printk(KERN_WARNING "initio: Could not allocate host structure.\n");
2834 error = -ENOMEM;
2835 goto out_disable_device;
2836 }
2837 host = (struct initio_host *)shost->hostdata;
2838 memset(host, 0, sizeof(struct initio_host));
Alan Cox99f1f532007-12-13 16:14:05 -08002839 host->addr = pci_resource_start(pdev, 0);
Stuart Swalese2d435e2008-01-23 20:00:48 +00002840 host->bios_addr = bios_seg;
Alan Cox72d39fe2007-05-21 15:06:43 +01002841
2842 if (!request_region(host->addr, 256, "i91u")) {
2843 printk(KERN_WARNING "initio: I/O port range 0x%x is busy.\n", host->addr);
2844 error = -ENODEV;
2845 goto out_host_put;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002846 }
2847
Alan Cox72d39fe2007-05-21 15:06:43 +01002848 if (initio_tag_enable) /* 1.01i */
2849 num_scb = MAX_TARGETS * i91u_MAXQUEUE;
2850 else
2851 num_scb = MAX_TARGETS + 3; /* 1-tape, 1-CD_ROM, 1- extra */
Linus Torvalds1da177e2005-04-16 15:20:36 -07002852
Alan Cox72d39fe2007-05-21 15:06:43 +01002853 for (; num_scb >= MAX_TARGETS + 3; num_scb--) {
2854 i = num_scb * sizeof(struct scsi_ctrl_blk);
2855 if ((scb = kzalloc(i, GFP_DMA)) != NULL)
2856 break;
2857 }
Linus Torvalds1da177e2005-04-16 15:20:36 -07002858
Alan Cox72d39fe2007-05-21 15:06:43 +01002859 if (!scb) {
2860 printk(KERN_WARNING "initio: Cannot allocate SCB array.\n");
2861 error = -ENOMEM;
2862 goto out_release_region;
2863 }
2864
Alan Coxe9e42fa2007-10-15 20:51:32 +01002865 host->pci_dev = pdev;
2866
Stuart Swalese2d435e2008-01-23 20:00:48 +00002867 host->semaph = 1;
2868 spin_lock_init(&host->semaph_lock);
Alan Cox72d39fe2007-05-21 15:06:43 +01002869 host->num_scbs = num_scb;
2870 host->scb = scb;
2871 host->next_pending = scb;
2872 host->next_avail = scb;
2873 for (i = 0, tmp = scb; i < num_scb; i++, tmp++) {
2874 tmp->tagid = i;
2875 if (i != 0)
2876 prev->next = tmp;
2877 prev = tmp;
2878 }
2879 prev->next = NULL;
2880 host->scb_end = tmp;
2881 host->first_avail = scb;
2882 host->last_avail = prev;
Alan Coxe9e42fa2007-10-15 20:51:32 +01002883 spin_lock_init(&host->avail_lock);
Alan Cox72d39fe2007-05-21 15:06:43 +01002884
Stuart Swalese2d435e2008-01-23 20:00:48 +00002885 initio_init(host, phys_to_virt(((u32)bios_seg << 4)));
Alan Cox72d39fe2007-05-21 15:06:43 +01002886
2887 host->jsstatus0 = 0;
2888
2889 shost->io_port = host->addr;
2890 shost->n_io_port = 0xff;
2891 shost->can_queue = num_scb; /* 03/05/98 */
2892 shost->unique_id = host->addr;
2893 shost->max_id = host->max_tar;
2894 shost->max_lun = 32; /* 10/21/97 */
2895 shost->irq = pdev->irq;
2896 shost->this_id = host->scsi_id; /* Assign HCS index */
2897 shost->base = host->addr;
2898 shost->sg_tablesize = TOTAL_SG_ENTRY;
2899
Michael Opdenacker4909cc22014-03-05 06:09:41 +01002900 error = request_irq(pdev->irq, i91u_intr, IRQF_SHARED, "i91u", shost);
Alan Cox72d39fe2007-05-21 15:06:43 +01002901 if (error < 0) {
2902 printk(KERN_WARNING "initio: Unable to request IRQ %d\n", pdev->irq);
2903 goto out_free_scbs;
2904 }
2905
2906 pci_set_drvdata(pdev, shost);
Alan Cox72d39fe2007-05-21 15:06:43 +01002907
2908 error = scsi_add_host(shost, &pdev->dev);
2909 if (error)
2910 goto out_free_irq;
2911 scsi_scan_host(shost);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002912 return 0;
Alan Cox72d39fe2007-05-21 15:06:43 +01002913out_free_irq:
2914 free_irq(pdev->irq, shost);
2915out_free_scbs:
2916 kfree(host->scb);
2917out_release_region:
2918 release_region(host->addr, 256);
2919out_host_put:
2920 scsi_host_put(shost);
2921out_disable_device:
2922 pci_disable_device(pdev);
2923 return error;
Linus Torvalds1da177e2005-04-16 15:20:36 -07002924}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002925
Alan Cox72d39fe2007-05-21 15:06:43 +01002926/**
2927 * initio_remove_one - control shutdown
2928 * @pdev: PCI device being released
2929 *
2930 * Release the resources assigned to this adapter after it has
2931 * finished being used.
2932 */
2933
2934static void initio_remove_one(struct pci_dev *pdev)
2935{
2936 struct Scsi_Host *host = pci_get_drvdata(pdev);
2937 struct initio_host *s = (struct initio_host *)host->hostdata;
2938 scsi_remove_host(host);
2939 free_irq(pdev->irq, host);
2940 release_region(s->addr, 256);
2941 scsi_host_put(host);
2942 pci_disable_device(pdev);
2943}
2944
2945MODULE_LICENSE("GPL");
2946
2947static struct pci_device_id initio_pci_tbl[] = {
2948 {PCI_VENDOR_ID_INIT, 0x9500, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2949 {PCI_VENDOR_ID_INIT, 0x9400, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2950 {PCI_VENDOR_ID_INIT, 0x9401, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2951 {PCI_VENDOR_ID_INIT, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2952 {PCI_VENDOR_ID_DOMEX, 0x0002, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2953 {0,}
Linus Torvalds1da177e2005-04-16 15:20:36 -07002954};
Alan Cox72d39fe2007-05-21 15:06:43 +01002955MODULE_DEVICE_TABLE(pci, initio_pci_tbl);
Linus Torvalds1da177e2005-04-16 15:20:36 -07002956
Alan Cox72d39fe2007-05-21 15:06:43 +01002957static struct pci_driver initio_pci_driver = {
2958 .name = "initio",
2959 .id_table = initio_pci_tbl,
2960 .probe = initio_probe_one,
Greg Kroah-Hartman6f039792012-12-21 13:08:55 -08002961 .remove = initio_remove_one,
Alan Cox72d39fe2007-05-21 15:06:43 +01002962};
Liu Shixinca57b062020-09-17 15:10:45 +08002963module_pci_driver(initio_pci_driver);
Alan Cox72d39fe2007-05-21 15:06:43 +01002964
2965MODULE_DESCRIPTION("Initio INI-9X00U/UW SCSI device driver");
2966MODULE_AUTHOR("Initio Corporation");
2967MODULE_LICENSE("GPL");