2 * NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver
3 * Copyright (C) 2001, 2002, 2003
4 * YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>
5 * GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2, or (at your option)
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
19 * 1.0: Initial Release.
20 * 1.1: Add /proc SDTR status.
21 * Remove obsolete error handler nsp32_reset.
23 * 1.2: PowerPC (big endian) support.
26 #include <linux/version.h>
27 #include <linux/module.h>
28 #include <linux/init.h>
29 #include <linux/kernel.h>
30 #include <linux/slab.h>
31 #include <linux/string.h>
32 #include <linux/timer.h>
33 #include <linux/ioport.h>
34 #include <linux/major.h>
35 #include <linux/blkdev.h>
36 #include <linux/interrupt.h>
37 #include <linux/pci.h>
38 #include <linux/delay.h>
39 #include <linux/ctype.h>
40 #include <linux/dma-mapping.h>
43 #include <asm/system.h>
46 #include <scsi/scsi.h>
47 #include <scsi/scsi_cmnd.h>
48 #include <scsi/scsi_device.h>
49 #include <scsi/scsi_host.h>
50 #include <scsi/scsi_ioctl.h>
55 /***********************************************************************
58 static int trans_mode = 0; /* default: BIOS */
59 module_param (trans_mode, int, 0);
60 MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");
62 #define ULTRA20M_MODE 2
64 static int auto_param = 0; /* default: ON */
65 module_param (auto_param, bool, 0);
66 MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");
68 static int disc_priv = 1; /* default: OFF */
69 module_param (disc_priv, bool, 0);
70 MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))");
72 MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
73 MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");
74 MODULE_LICENSE("GPL");
76 static const char *nsp32_release_version = "1.2";
79 /****************************************************************************
82 static struct pci_device_id nsp32_pci_table[] __devinitdata = {
84 .vendor = PCI_VENDOR_ID_IODATA,
85 .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
86 .subvendor = PCI_ANY_ID,
87 .subdevice = PCI_ANY_ID,
88 .driver_data = MODEL_IODATA,
91 .vendor = PCI_VENDOR_ID_WORKBIT,
92 .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
93 .subvendor = PCI_ANY_ID,
94 .subdevice = PCI_ANY_ID,
95 .driver_data = MODEL_KME,
98 .vendor = PCI_VENDOR_ID_WORKBIT,
99 .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
100 .subvendor = PCI_ANY_ID,
101 .subdevice = PCI_ANY_ID,
102 .driver_data = MODEL_WORKBIT,
105 .vendor = PCI_VENDOR_ID_WORKBIT,
106 .device = PCI_DEVICE_ID_WORKBIT_STANDARD,
107 .subvendor = PCI_ANY_ID,
108 .subdevice = PCI_ANY_ID,
109 .driver_data = MODEL_PCI_WORKBIT,
112 .vendor = PCI_VENDOR_ID_WORKBIT,
113 .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
114 .subvendor = PCI_ANY_ID,
115 .subdevice = PCI_ANY_ID,
116 .driver_data = MODEL_LOGITEC,
119 .vendor = PCI_VENDOR_ID_WORKBIT,
120 .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
121 .subvendor = PCI_ANY_ID,
122 .subdevice = PCI_ANY_ID,
123 .driver_data = MODEL_PCI_LOGITEC,
126 .vendor = PCI_VENDOR_ID_WORKBIT,
127 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
128 .subvendor = PCI_ANY_ID,
129 .subdevice = PCI_ANY_ID,
130 .driver_data = MODEL_PCI_MELCO,
133 .vendor = PCI_VENDOR_ID_WORKBIT,
134 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,
135 .subvendor = PCI_ANY_ID,
136 .subdevice = PCI_ANY_ID,
137 .driver_data = MODEL_PCI_MELCO,
141 MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
143 static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */
147 * Period/AckWidth speed conversion table
149 * Note: This period/ackwidth speed table must be in descending order.
151 static nsp32_sync_table nsp32_sync_table_40M[] = {
152 /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */
153 {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */
154 {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */
155 {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
156 {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */
157 {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */
158 {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */
159 {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
160 {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */
161 {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
164 static nsp32_sync_table nsp32_sync_table_20M[] = {
165 {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
166 {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */
167 {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
168 {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
169 {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */
170 {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */
171 {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */
172 {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */
173 {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */
176 static nsp32_sync_table nsp32_sync_table_pci[] = {
177 {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */
178 {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */
179 {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */
180 {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */
181 {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */
182 {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */
183 {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */
184 {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */
185 {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */
189 * function declaration
191 /* module entry point */
192 static int __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *);
193 static void __devexit nsp32_remove(struct pci_dev *);
194 static int __init init_nsp32 (void);
195 static void __exit exit_nsp32 (void);
197 /* struct struct scsi_host_template */
198 static int nsp32_proc_info (struct Scsi_Host *, char *, char **, off_t, int, int);
200 static int nsp32_detect (struct pci_dev *pdev);
201 static int nsp32_queuecommand(struct scsi_cmnd *,
202 void (*done)(struct scsi_cmnd *));
203 static const char *nsp32_info (struct Scsi_Host *);
204 static int nsp32_release (struct Scsi_Host *);
206 /* SCSI error handler */
207 static int nsp32_eh_abort (struct scsi_cmnd *);
208 static int nsp32_eh_bus_reset (struct scsi_cmnd *);
209 static int nsp32_eh_host_reset(struct scsi_cmnd *);
211 /* generate SCSI message */
212 static void nsp32_build_identify(struct scsi_cmnd *);
213 static void nsp32_build_nop (struct scsi_cmnd *);
214 static void nsp32_build_reject (struct scsi_cmnd *);
215 static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, unsigned char);
217 /* SCSI message handler */
218 static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short);
219 static void nsp32_msgout_occur (struct scsi_cmnd *);
220 static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, unsigned short);
222 static int nsp32_setup_sg_table (struct scsi_cmnd *);
223 static int nsp32_selection_autopara(struct scsi_cmnd *);
224 static int nsp32_selection_autoscsi(struct scsi_cmnd *);
225 static void nsp32_scsi_done (struct scsi_cmnd *);
226 static int nsp32_arbitration (struct scsi_cmnd *, unsigned int);
227 static int nsp32_reselection (struct scsi_cmnd *, unsigned char);
228 static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int);
229 static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short);
232 static void nsp32_analyze_sdtr (struct scsi_cmnd *);
233 static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char);
234 static void nsp32_set_async (nsp32_hw_data *, nsp32_target *);
235 static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *);
236 static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char);
238 /* SCSI bus status handler */
239 static void nsp32_wait_req (nsp32_hw_data *, int);
240 static void nsp32_wait_sack (nsp32_hw_data *, int);
241 static void nsp32_sack_assert (nsp32_hw_data *);
242 static void nsp32_sack_negate (nsp32_hw_data *);
243 static void nsp32_do_bus_reset(nsp32_hw_data *);
245 /* hardware interrupt handler */
246 static irqreturn_t do_nsp32_isr(int, void *);
248 /* initialize hardware */
249 static int nsp32hw_init(nsp32_hw_data *);
252 static int nsp32_getprom_param (nsp32_hw_data *);
253 static int nsp32_getprom_at24 (nsp32_hw_data *);
254 static int nsp32_getprom_c16 (nsp32_hw_data *);
255 static void nsp32_prom_start (nsp32_hw_data *);
256 static void nsp32_prom_stop (nsp32_hw_data *);
257 static int nsp32_prom_read (nsp32_hw_data *, int);
258 static int nsp32_prom_read_bit (nsp32_hw_data *);
259 static void nsp32_prom_write_bit(nsp32_hw_data *, int);
260 static void nsp32_prom_set (nsp32_hw_data *, int, int);
261 static int nsp32_prom_get (nsp32_hw_data *, int);
263 /* debug/warning/info message */
264 static void nsp32_message (const char *, int, char *, char *, ...);
266 static void nsp32_dmessage(const char *, int, int, char *, ...);
270 * max_sectors is currently limited up to 128.
272 static struct scsi_host_template nsp32_template = {
273 .proc_name = "nsp32",
274 .name = "Workbit NinjaSCSI-32Bi/UDE",
275 .proc_info = nsp32_proc_info,
277 .queuecommand = nsp32_queuecommand,
279 .sg_tablesize = NSP32_SG_SIZE,
282 .this_id = NSP32_HOST_SCSIID,
283 .use_clustering = DISABLE_CLUSTERING,
284 .eh_abort_handler = nsp32_eh_abort,
285 .eh_bus_reset_handler = nsp32_eh_bus_reset,
286 .eh_host_reset_handler = nsp32_eh_host_reset,
287 /* .highmem_io = 1, */
290 #include "nsp32_io.h"
292 /***********************************************************************
296 # define NSP32_DEBUG_MASK 0x000000
297 # define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args)
298 # define nsp32_dbg(mask, args...) /* */
300 # define NSP32_DEBUG_MASK 0xffffff
301 # define nsp32_msg(type, args...) \
302 nsp32_message (__FUNCTION__, __LINE__, (type), args)
303 # define nsp32_dbg(mask, args...) \
304 nsp32_dmessage(__FUNCTION__, __LINE__, (mask), args)
307 #define NSP32_DEBUG_QUEUECOMMAND BIT(0)
308 #define NSP32_DEBUG_REGISTER BIT(1)
309 #define NSP32_DEBUG_AUTOSCSI BIT(2)
310 #define NSP32_DEBUG_INTR BIT(3)
311 #define NSP32_DEBUG_SGLIST BIT(4)
312 #define NSP32_DEBUG_BUSFREE BIT(5)
313 #define NSP32_DEBUG_CDB_CONTENTS BIT(6)
314 #define NSP32_DEBUG_RESELECTION BIT(7)
315 #define NSP32_DEBUG_MSGINOCCUR BIT(8)
316 #define NSP32_DEBUG_EEPROM BIT(9)
317 #define NSP32_DEBUG_MSGOUTOCCUR BIT(10)
318 #define NSP32_DEBUG_BUSRESET BIT(11)
319 #define NSP32_DEBUG_RESTART BIT(12)
320 #define NSP32_DEBUG_SYNC BIT(13)
321 #define NSP32_DEBUG_WAIT BIT(14)
322 #define NSP32_DEBUG_TARGETFLAG BIT(15)
323 #define NSP32_DEBUG_PROC BIT(16)
324 #define NSP32_DEBUG_INIT BIT(17)
325 #define NSP32_SPECIAL_PRINT_REGISTER BIT(20)
327 #define NSP32_DEBUG_BUF_LEN 100
329 static void nsp32_message(const char *func, int line, char *type, char *fmt, ...)
332 char buf[NSP32_DEBUG_BUF_LEN];
335 vsnprintf(buf, sizeof(buf), fmt, args);
339 printk("%snsp32: %s\n", type, buf);
341 printk("%snsp32: %s (%d): %s\n", type, func, line, buf);
346 static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)
349 char buf[NSP32_DEBUG_BUF_LEN];
352 vsnprintf(buf, sizeof(buf), fmt, args);
355 if (mask & NSP32_DEBUG_MASK) {
356 printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
362 # include "nsp32_debug.c"
364 # define show_command(arg) /* */
365 # define show_busphase(arg) /* */
366 # define show_autophase(arg) /* */
372 static void nsp32_build_identify(struct scsi_cmnd *SCpnt)
374 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
375 int pos = data->msgout_len;
378 /* XXX: Auto DiscPriv detection is progressing... */
379 if (disc_priv == 0) {
383 data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;
385 data->msgout_len = pos;
389 * SDTR Message Routine
391 static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt,
392 unsigned char period,
393 unsigned char offset)
395 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
396 int pos = data->msgout_len;
398 data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++;
399 data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;
400 data->msgoutbuf[pos] = EXTENDED_SDTR; pos++;
401 data->msgoutbuf[pos] = period; pos++;
402 data->msgoutbuf[pos] = offset; pos++;
404 data->msgout_len = pos;
408 * No Operation Message
410 static void nsp32_build_nop(struct scsi_cmnd *SCpnt)
412 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
413 int pos = data->msgout_len;
416 nsp32_msg(KERN_WARNING,
417 "Some messages are already contained!");
421 data->msgoutbuf[pos] = NOP; pos++;
422 data->msgout_len = pos;
428 static void nsp32_build_reject(struct scsi_cmnd *SCpnt)
430 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
431 int pos = data->msgout_len;
433 data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;
434 data->msgout_len = pos;
441 static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time)
443 unsigned int base = SCpnt->host->io_port;
445 nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);
447 if (time & (~TIMER_CNT_MASK)) {
448 nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");
451 nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);
457 * set SCSI command and other parameter to asic, and start selection phase
459 static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt)
461 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
462 unsigned int base = SCpnt->device->host->io_port;
463 unsigned int host_id = SCpnt->device->host->this_id;
464 unsigned char target = scmd_id(SCpnt);
465 nsp32_autoparam *param = data->autoparam;
471 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
476 phase = nsp32_read1(base, SCSI_BUS_MONITOR);
477 if (phase != BUSMON_BUS_FREE) {
478 nsp32_msg(KERN_WARNING, "bus busy");
479 show_busphase(phase & BUSMON_PHASE_MASK);
480 SCpnt->result = DID_BUS_BUSY << 16;
487 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
488 * over 3 messages needs another routine.
490 if (data->msgout_len == 0) {
491 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
492 SCpnt->result = DID_ERROR << 16;
494 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
496 for (i = 0; i < data->msgout_len; i++) {
498 * the sending order of the message is:
499 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2
500 * MCNT 2: MSG#1 -> MSG#2
504 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
506 msgout |= MV_VALID; /* MV valid */
507 msgout |= (unsigned int)data->msgout_len; /* len */
509 /* data->msgout_len > 3 */
513 // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT));
514 // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
517 * setup asic parameter
519 memset(param, 0, sizeof(nsp32_autoparam));
522 for (i = 0; i < SCpnt->cmd_len; i++) {
523 param->cdb[4 * i] = SCpnt->cmnd[i];
526 /* outgoing messages */
527 param->msgout = cpu_to_le32(msgout);
529 /* syncreg, ackwidth, target id, SREQ sampling rate */
530 param->syncreg = data->cur_target->syncreg;
531 param->ackwidth = data->cur_target->ackwidth;
532 param->target_id = BIT(host_id) | BIT(target);
533 param->sample_reg = data->cur_target->sample_reg;
535 // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);
537 /* command control */
538 param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |
540 AUTO_MSGIN_00_OR_04 |
545 /* transfer control */
547 switch (data->trans_method) {
548 case NSP32_TRANSFER_BUSMASTER:
551 case NSP32_TRANSFER_MMIO:
554 case NSP32_TRANSFER_PIO:
558 nsp32_msg(KERN_ERR, "unknown trans_method");
562 * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
563 * For bus master transfer, it's taken off.
565 s |= (TRANSFER_GO | ALL_COUNTER_CLR);
566 param->transfer_control = cpu_to_le16(s);
569 param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);
572 * transfer parameter to ASIC
574 nsp32_write4(base, SGT_ADR, data->auto_paddr);
575 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER |
581 ret = nsp32_arbitration(SCpnt, base);
588 * Selection with AUTO SCSI (without AUTO PARAMETER)
590 static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)
592 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
593 unsigned int base = SCpnt->device->host->io_port;
594 unsigned int host_id = SCpnt->device->host->this_id;
595 unsigned char target = scmd_id(SCpnt);
598 unsigned short command = 0;
599 unsigned int msgout = 0;
600 unsigned short execph;
603 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
608 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
613 phase = nsp32_read1(base, SCSI_BUS_MONITOR);
614 if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
615 nsp32_msg(KERN_WARNING, "bus busy");
616 SCpnt->result = DID_BUS_BUSY << 16;
624 execph = nsp32_read2(base, SCSI_EXECUTE_PHASE);
627 * clear FIFO counter to set CDBs
629 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER);
634 for (i = 0; i < SCpnt->cmd_len; i++) {
635 nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);
637 nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);
640 * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID
642 nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target));
645 * set SCSI MSGOUT REG
647 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
648 * over 3 messages needs another routine.
650 if (data->msgout_len == 0) {
651 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
652 SCpnt->result = DID_ERROR << 16;
655 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
657 for (i = 0; i < data->msgout_len; i++) {
659 * the sending order of the message is:
660 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2
661 * MCNT 2: MSG#1 -> MSG#2
665 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
667 msgout |= MV_VALID; /* MV valid */
668 msgout |= (unsigned int)data->msgout_len; /* len */
669 nsp32_write4(base, SCSI_MSG_OUT, msgout);
671 /* data->msgout_len > 3 */
672 nsp32_write4(base, SCSI_MSG_OUT, 0);
676 * set selection timeout(= 250ms)
678 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
681 * set SREQ hazard killer sampling rate
683 * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.
684 * check other internal clock!
686 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
691 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
695 * Don't set BM_START_ADR before setting this register.
697 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
702 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
704 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
705 "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",
706 nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
707 nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));
708 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",
709 data->msgout_len, msgout);
712 * set SGT ADDR (physical address)
714 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
717 * set TRANSFER CONTROL REG
720 command |= (TRANSFER_GO | ALL_COUNTER_CLR);
721 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
722 if (SCpnt->request_bufflen > 0) {
725 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
726 command |= CB_MMIO_MODE;
727 } else if (data->trans_method & NSP32_TRANSFER_PIO) {
728 command |= CB_IO_MODE;
730 nsp32_write2(base, TRANSFER_CONTROL, command);
733 * start AUTO SCSI, kick off arbitration
735 command = (CLEAR_CDB_FIFO_POINTER |
737 AUTO_MSGIN_00_OR_04 |
740 nsp32_write2(base, COMMAND_CONTROL, command);
745 status = nsp32_arbitration(SCpnt, base);
751 nsp32_write2(base, IRQ_CONTROL, 0);
758 * Arbitration Status Check
760 * Note: Arbitration counter is waited during ARBIT_GO is not lifting.
761 * Using udelay(1) consumes CPU time and system time, but
762 * arbitration delay time is defined minimal 2.4us in SCSI
763 * specification, thus udelay works as coarse grained wait timer.
765 static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base)
772 arbit = nsp32_read1(base, ARBIT_STATUS);
774 } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
775 (time <= ARBIT_TIMEOUT_TIME));
777 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
778 "arbit: 0x%x, delay time: %d", arbit, time);
780 if (arbit & ARBIT_WIN) {
781 /* Arbitration succeeded */
782 SCpnt->result = DID_OK << 16;
783 nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */
784 } else if (arbit & ARBIT_FAIL) {
785 /* Arbitration failed */
786 SCpnt->result = DID_BUS_BUSY << 16;
790 * unknown error or ARBIT_GO timeout,
791 * something lock up! guess no connection.
793 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");
794 SCpnt->result = DID_NO_CONNECT << 16;
801 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
810 * Note: This reselection routine is called from msgin_occur,
811 * reselection target id&lun must be already set.
812 * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.
814 static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)
816 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
817 unsigned int host_id = SCpnt->device->host->this_id;
818 unsigned int base = SCpnt->device->host->io_port;
819 unsigned char tmpid, newid;
821 nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");
824 * calculate reselected SCSI ID
826 tmpid = nsp32_read1(base, RESELECT_ID);
827 tmpid &= (~BIT(host_id));
838 * If reselected New ID:LUN is not existed
839 * or current nexus is not existed, unexpected
840 * reselection is occurred. Send reject message.
842 if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) {
843 nsp32_msg(KERN_WARNING, "unknown id/lun");
845 } else if(data->lunt[newid][newlun].SCpnt == NULL) {
846 nsp32_msg(KERN_WARNING, "no SCSI command is processing");
850 data->cur_id = newid;
851 data->cur_lun = newlun;
852 data->cur_target = &(data->target[newid]);
853 data->cur_lunt = &(data->lunt[newid][newlun]);
855 /* reset SACK/SavedACK counter (or ALL clear?) */
856 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
863 * nsp32_setup_sg_table - build scatter gather list for transfer data
866 * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.
868 static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
870 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
871 struct scatterlist *sgl;
872 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
876 if (SCpnt->request_bufflen == 0) {
881 nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");
886 sgl = (struct scatterlist *)SCpnt->request_buffer;
887 num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg,
888 SCpnt->sc_data_direction);
889 for (i = 0; i < num; i++) {
891 * Build nsp32_sglist, substitute sg dma addresses.
893 sgt[i].addr = cpu_to_le32(sg_dma_address(sgl));
894 sgt[i].len = cpu_to_le32(sg_dma_len(sgl));
897 if (le32_to_cpu(sgt[i].len) > 0x10000) {
899 "can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len));
902 nsp32_dbg(NSP32_DEBUG_SGLIST,
903 "num 0x%x : addr 0x%lx len 0x%lx",
905 le32_to_cpu(sgt[i].addr),
906 le32_to_cpu(sgt[i].len ));
910 l = le32_to_cpu(sgt[num-1].len);
911 sgt[num-1].len = cpu_to_le32(l | SGTEND);
914 SCpnt->SCp.have_data_in = pci_map_single(data->Pci,
915 SCpnt->request_buffer, SCpnt->request_bufflen,
916 SCpnt->sc_data_direction);
918 sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in);
919 sgt[0].len = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */
921 if (SCpnt->request_bufflen > 0x10000) {
923 "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen);
926 nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx",
927 le32_to_cpu(sgt[0].addr),
928 le32_to_cpu(sgt[0].len ));
934 static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
936 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
937 nsp32_target *target;
938 nsp32_lunt *cur_lunt;
941 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
942 "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x "
943 "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",
944 SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
945 SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen);
947 if (data->CurrentSC != NULL) {
948 nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
949 data->CurrentSC = NULL;
950 SCpnt->result = DID_NO_CONNECT << 16;
955 /* check target ID is not same as this initiator ID */
956 if (scmd_id(SCpnt) == SCpnt->device->host->this_id) {
957 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???");
958 SCpnt->result = DID_BAD_TARGET << 16;
963 /* check target LUN is allowable value */
964 if (SCpnt->device->lun >= MAX_LUN) {
965 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");
966 SCpnt->result = DID_BAD_TARGET << 16;
973 SCpnt->scsi_done = done;
974 data->CurrentSC = SCpnt;
975 SCpnt->SCp.Status = CHECK_CONDITION;
976 SCpnt->SCp.Message = 0;
977 SCpnt->resid = SCpnt->request_bufflen;
979 SCpnt->SCp.ptr = (char *) SCpnt->request_buffer;
980 SCpnt->SCp.this_residual = SCpnt->request_bufflen;
981 SCpnt->SCp.buffer = NULL;
982 SCpnt->SCp.buffers_residual = 0;
984 /* initialize data */
985 data->msgout_len = 0;
987 cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);
988 cur_lunt->SCpnt = SCpnt;
989 cur_lunt->save_datp = 0;
990 cur_lunt->msgin03 = FALSE;
991 data->cur_lunt = cur_lunt;
992 data->cur_id = SCpnt->device->id;
993 data->cur_lun = SCpnt->device->lun;
995 ret = nsp32_setup_sg_table(SCpnt);
997 nsp32_msg(KERN_ERR, "SGT fail");
998 SCpnt->result = DID_ERROR << 16;
999 nsp32_scsi_done(SCpnt);
1003 /* Build IDENTIFY */
1004 nsp32_build_identify(SCpnt);
1007 * If target is the first time to transfer after the reset
1008 * (target don't have SDTR_DONE and SDTR_INITIATOR), sync
1009 * message SDTR is needed to do synchronous transfer.
1011 target = &data->target[scmd_id(SCpnt)];
1012 data->cur_target = target;
1014 if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {
1015 unsigned char period, offset;
1017 if (trans_mode != ASYNC_MODE) {
1018 nsp32_set_max_sync(data, target, &period, &offset);
1019 nsp32_build_sdtr(SCpnt, period, offset);
1020 target->sync_flag |= SDTR_INITIATOR;
1022 nsp32_set_async(data, target);
1023 target->sync_flag |= SDTR_DONE;
1026 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1027 "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n",
1028 target->limit_entry, period, offset);
1029 } else if (target->sync_flag & SDTR_INITIATOR) {
1031 * It was negotiating SDTR with target, sending from the
1032 * initiator, but there are no chance to remove this flag.
1033 * Set async because we don't get proper negotiation.
1035 nsp32_set_async(data, target);
1036 target->sync_flag &= ~SDTR_INITIATOR;
1037 target->sync_flag |= SDTR_DONE;
1039 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1040 "SDTR_INITIATOR: fall back to async");
1041 } else if (target->sync_flag & SDTR_TARGET) {
1043 * It was negotiating SDTR with target, sending from target,
1044 * but there are no chance to remove this flag. Set async
1045 * because we don't get proper negotiation.
1047 nsp32_set_async(data, target);
1048 target->sync_flag &= ~SDTR_TARGET;
1049 target->sync_flag |= SDTR_DONE;
1051 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1052 "Unknown SDTR from target is reached, fall back to async.");
1055 nsp32_dbg(NSP32_DEBUG_TARGETFLAG,
1056 "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x",
1057 SCpnt->device->id, target->sync_flag, target->syncreg,
1061 if (auto_param == 0) {
1062 ret = nsp32_selection_autopara(SCpnt);
1064 ret = nsp32_selection_autoscsi(SCpnt);
1068 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");
1069 nsp32_scsi_done(SCpnt);
1075 /* initialize asic */
1076 static int nsp32hw_init(nsp32_hw_data *data)
1078 unsigned int base = data->BaseAddress;
1079 unsigned short irq_stat;
1080 unsigned long lc_reg;
1081 unsigned char power;
1083 lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);
1084 if ((lc_reg & 0xff00) == 0) {
1085 lc_reg |= (0x20 << 8);
1086 nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);
1089 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
1090 nsp32_write2(base, TRANSFER_CONTROL, 0);
1091 nsp32_write4(base, BM_CNT, 0);
1092 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
1095 irq_stat = nsp32_read2(base, IRQ_STATUS);
1096 nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);
1097 } while (irq_stat & IRQSTATUS_ANY_IRQ);
1100 * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is
1101 * designated by specification.
1103 if ((data->trans_method & NSP32_TRANSFER_PIO) ||
1104 (data->trans_method & NSP32_TRANSFER_MMIO)) {
1105 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);
1106 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40);
1107 } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
1108 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);
1109 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);
1111 nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode");
1114 nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x",
1115 nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT),
1116 nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT));
1118 nsp32_index_write1(base, CLOCK_DIV, data->clock);
1119 nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);
1120 nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */
1123 * initialize MISC_WRRD register
1125 * Note: Designated parameters is obeyed as following:
1126 * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set.
1127 * MISC_MASTER_TERMINATION_SELECT: It must be set.
1128 * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set.
1129 * MISC_AUTOSEL_TIMING_SEL: It should be set.
1130 * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set.
1131 * MISC_DELAYED_BMSTART: It's selected for safety.
1133 * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then
1134 * we have to set TRANSFERCONTROL_BM_START as 0 and set
1135 * appropriate value before restarting bus master transfer.
1137 nsp32_index_write2(base, MISC_WR,
1138 (SCSI_DIRECTION_DETECTOR_SELECT |
1140 MASTER_TERMINATION_SELECT |
1141 BMREQ_NEGATE_TIMING_SEL |
1142 AUTOSEL_TIMING_SEL |
1143 BMSTOP_CHANGE2_NONDATA_PHASE));
1145 nsp32_index_write1(base, TERM_PWR_CONTROL, 0);
1146 power = nsp32_index_read1(base, TERM_PWR_CONTROL);
1147 if (!(power & SENSE)) {
1148 nsp32_msg(KERN_INFO, "term power on");
1149 nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR);
1152 nsp32_write2(base, TIMER_SET, TIMER_STOP);
1153 nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */
1155 nsp32_write1(base, SYNC_REG, 0);
1156 nsp32_write1(base, ACK_WIDTH, 0);
1157 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
1160 * enable to select designated IRQ (except for
1161 * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR)
1163 nsp32_index_write2(base, IRQ_SELECT, IRQSELECT_TIMER_IRQ |
1164 IRQSELECT_SCSIRESET_IRQ |
1165 IRQSELECT_FIFO_SHLD_IRQ |
1166 IRQSELECT_RESELECT_IRQ |
1167 IRQSELECT_PHASE_CHANGE_IRQ |
1168 IRQSELECT_AUTO_SCSI_SEQ_IRQ |
1169 // IRQSELECT_BMCNTERR_IRQ |
1170 IRQSELECT_TARGET_ABORT_IRQ |
1171 IRQSELECT_MASTER_ABORT_IRQ );
1172 nsp32_write2(base, IRQ_CONTROL, 0);
1175 nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF);
1176 nsp32_index_write1(base, EXT_PORT, LED_OFF);
1182 /* interrupt routine */
1183 static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
1185 nsp32_hw_data *data = dev_id;
1186 unsigned int base = data->BaseAddress;
1187 struct scsi_cmnd *SCpnt = data->CurrentSC;
1188 unsigned short auto_stat, irq_stat, trans_stat;
1189 unsigned char busmon, busphase;
1190 unsigned long flags;
1193 struct Scsi_Host *host = data->Host;
1195 spin_lock_irqsave(host->host_lock, flags);
1198 * IRQ check, then enable IRQ mask
1200 irq_stat = nsp32_read2(base, IRQ_STATUS);
1201 nsp32_dbg(NSP32_DEBUG_INTR,
1202 "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat);
1203 /* is this interrupt comes from Ninja asic? */
1204 if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) {
1205 nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat);
1209 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
1211 busmon = nsp32_read1(base, SCSI_BUS_MONITOR);
1212 busphase = busmon & BUSMON_PHASE_MASK;
1214 trans_stat = nsp32_read2(base, TRANSFER_STATUS);
1215 if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) {
1216 nsp32_msg(KERN_INFO, "card disconnect");
1217 if (data->CurrentSC != NULL) {
1218 nsp32_msg(KERN_INFO, "clean up current SCSI command");
1219 SCpnt->result = DID_BAD_TARGET << 16;
1220 nsp32_scsi_done(SCpnt);
1226 if (irq_stat & IRQSTATUS_TIMER_IRQ) {
1227 nsp32_dbg(NSP32_DEBUG_INTR, "timer stop");
1228 nsp32_write2(base, TIMER_SET, TIMER_STOP);
1233 if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) {
1234 nsp32_msg(KERN_INFO, "detected someone do bus reset");
1235 nsp32_do_bus_reset(data);
1236 if (SCpnt != NULL) {
1237 SCpnt->result = DID_RESET << 16;
1238 nsp32_scsi_done(SCpnt);
1243 if (SCpnt == NULL) {
1244 nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened");
1245 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1250 * AutoSCSI Interrupt.
1251 * Note: This interrupt is occurred when AutoSCSI is finished. Then
1252 * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are
1253 * recorded when AutoSCSI sequencer has been processed.
1255 if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) {
1256 /* getting SCSI executed phase */
1257 auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE);
1258 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
1260 /* Selection Timeout, go busfree phase. */
1261 if (auto_stat & SELECTION_TIMEOUT) {
1262 nsp32_dbg(NSP32_DEBUG_INTR,
1263 "selection timeout occurred");
1265 SCpnt->result = DID_TIME_OUT << 16;
1266 nsp32_scsi_done(SCpnt);
1270 if (auto_stat & MSGOUT_PHASE) {
1272 * MsgOut phase was processed.
1273 * If MSG_IN_OCCUER is not set, then MsgOut phase is
1274 * completed. Thus, msgout_len must reset. Otherwise,
1275 * nothing to do here. If MSG_OUT_OCCUER is occurred,
1276 * then we will encounter the condition and check.
1278 if (!(auto_stat & MSG_IN_OCCUER) &&
1279 (data->msgout_len <= 3)) {
1281 * !MSG_IN_OCCUER && msgout_len <=3
1282 * ---> AutoSCSI with MSGOUTreg is processed.
1284 data->msgout_len = 0;
1287 nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed");
1290 if ((auto_stat & DATA_IN_PHASE) &&
1291 (SCpnt->resid > 0) &&
1292 ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) {
1293 printk( "auto+fifo\n");
1294 //nsp32_pio_read(SCpnt);
1297 if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) {
1298 /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */
1299 nsp32_dbg(NSP32_DEBUG_INTR,
1300 "Data in/out phase processed");
1302 /* read BMCNT, SGT pointer addr */
1303 nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx",
1304 nsp32_read4(base, BM_CNT));
1305 nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx",
1306 nsp32_read4(base, SGT_ADR));
1307 nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx",
1308 nsp32_read4(base, SACK_CNT));
1309 nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx",
1310 nsp32_read4(base, SAVED_SACK_CNT));
1312 SCpnt->resid = 0; /* all data transfered! */
1318 if (auto_stat & MSG_IN_OCCUER) {
1319 nsp32_msgin_occur(SCpnt, irq_stat, auto_stat);
1325 if (auto_stat & MSG_OUT_OCCUER) {
1326 nsp32_msgout_occur(SCpnt);
1332 if (auto_stat & BUS_FREE_OCCUER) {
1333 ret = nsp32_busfree_occur(SCpnt, auto_stat);
1339 if (auto_stat & STATUS_PHASE) {
1341 * Read CSB and substitute CSB for SCpnt->result
1342 * to save status phase stutas byte.
1343 * scsi error handler checks host_byte (DID_*:
1344 * low level driver to indicate status), then checks
1345 * status_byte (SCSI status byte).
1347 SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN);
1350 if (auto_stat & ILLEGAL_PHASE) {
1351 /* Illegal phase is detected. SACK is not back. */
1352 nsp32_msg(KERN_WARNING,
1353 "AUTO SCSI ILLEGAL PHASE OCCUR!!!!");
1355 /* TODO: currently we don't have any action... bus reset? */
1358 * To send back SACK, assert, wait, and negate.
1360 nsp32_sack_assert(data);
1361 nsp32_wait_req(data, NEGATE);
1362 nsp32_sack_negate(data);
1366 if (auto_stat & COMMAND_PHASE) {
1368 nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed");
1371 if (auto_stat & AUTOSCSI_BUSY) {
1372 /* AutoSCSI is running */
1375 show_autophase(auto_stat);
1379 if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) {
1380 nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ");
1383 case BUSPHASE_DATA_OUT:
1384 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write");
1386 //nsp32_pio_write(SCpnt);
1390 case BUSPHASE_DATA_IN:
1391 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read");
1393 //nsp32_pio_read(SCpnt);
1397 case BUSPHASE_STATUS:
1398 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status");
1400 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1404 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase");
1405 nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1406 show_busphase(busphase);
1413 /* Phase Change IRQ */
1414 if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) {
1415 nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ");
1418 case BUSPHASE_MESSAGE_IN:
1419 nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in");
1420 nsp32_msgin_occur(SCpnt, irq_stat, 0);
1423 nsp32_msg(KERN_WARNING, "phase chg/other phase?");
1424 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n",
1425 irq_stat, trans_stat);
1426 show_busphase(busphase);
1433 if (irq_stat & IRQSTATUS_PCI_IRQ) {
1434 nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred");
1439 if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) {
1440 nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! ");
1442 * TODO: To be implemented improving bus master
1443 * transfer reliablity when BMCNTERR is occurred in
1444 * AutoSCSI phase described in specification.
1449 nsp32_dbg(NSP32_DEBUG_INTR,
1450 "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1451 show_busphase(busphase);
1455 /* disable IRQ mask */
1456 nsp32_write2(base, IRQ_CONTROL, 0);
1459 spin_unlock_irqrestore(host->host_lock, flags);
1461 nsp32_dbg(NSP32_DEBUG_INTR, "exit");
1463 return IRQ_RETVAL(handled);
1467 #define SPRINTF(args...) \
1469 if(length > (pos - buffer)) { \
1470 pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \
1471 nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\
1475 static int nsp32_proc_info(struct Scsi_Host *host, char *buffer, char **start,
1476 off_t offset, int length, int inout)
1480 unsigned long flags;
1481 nsp32_hw_data *data;
1484 unsigned char mode_reg;
1488 /* Write is not supported, just return. */
1489 if (inout == TRUE) {
1493 hostno = host->host_no;
1494 data = (nsp32_hw_data *)host->hostdata;
1495 base = host->io_port;
1497 SPRINTF("NinjaSCSI-32 status\n\n");
1498 SPRINTF("Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version);
1499 SPRINTF("SCSI host No.: %d\n", hostno);
1500 SPRINTF("IRQ: %d\n", host->irq);
1501 SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1);
1502 SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1);
1503 SPRINTF("sg_tablesize: %d\n", host->sg_tablesize);
1504 SPRINTF("Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff);
1506 mode_reg = nsp32_index_read1(base, CHIP_MODE);
1507 model = data->pci_devid->driver_data;
1510 SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no");
1512 SPRINTF("OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]);
1514 spin_lock_irqsave(&(data->Lock), flags);
1515 SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC);
1516 spin_unlock_irqrestore(&(data->Lock), flags);
1519 SPRINTF("SDTR status\n");
1520 for (id = 0; id < ARRAY_SIZE(data->target); id++) {
1522 SPRINTF("id %d: ", id);
1524 if (id == host->this_id) {
1525 SPRINTF("----- NinjaSCSI-32 host adapter\n");
1529 if (data->target[id].sync_flag == SDTR_DONE) {
1530 if (data->target[id].period == 0 &&
1531 data->target[id].offset == ASYNC_OFFSET ) {
1540 if (data->target[id].period != 0) {
1542 speed = 1000000 / (data->target[id].period * 4);
1544 SPRINTF(" transfer %d.%dMB/s, offset %d",
1547 data->target[id].offset
1554 thislength = pos - (buffer + offset);
1556 if(thislength < 0) {
1562 thislength = min(thislength, length);
1563 *start = buffer + offset;
1572 * Reset parameters and call scsi_done for data->cur_lunt.
1573 * Be careful setting SCpnt->result = DID_* before calling this function.
1575 static void nsp32_scsi_done(struct scsi_cmnd *SCpnt)
1577 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1578 unsigned int base = SCpnt->device->host->io_port;
1583 if (SCpnt->request_bufflen == 0) {
1587 if (SCpnt->use_sg) {
1588 pci_unmap_sg(data->Pci,
1589 (struct scatterlist *)SCpnt->request_buffer,
1590 SCpnt->use_sg, SCpnt->sc_data_direction);
1592 pci_unmap_single(data->Pci,
1593 (u32)SCpnt->SCp.have_data_in,
1594 SCpnt->request_bufflen,
1595 SCpnt->sc_data_direction);
1600 * clear TRANSFERCONTROL_BM_START
1602 nsp32_write2(base, TRANSFER_CONTROL, 0);
1603 nsp32_write4(base, BM_CNT, 0);
1608 (*SCpnt->scsi_done)(SCpnt);
1613 data->cur_lunt->SCpnt = NULL;
1614 data->cur_lunt = NULL;
1615 data->cur_target = NULL;
1616 data->CurrentSC = NULL;
1623 * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase
1624 * with ACK reply when below condition is matched:
1625 * MsgIn 00: Command Complete.
1626 * MsgIn 02: Save Data Pointer.
1627 * MsgIn 04: Diconnect.
1628 * In other case, unexpected BUSFREE is detected.
1630 static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph)
1632 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1633 unsigned int base = SCpnt->device->host->io_port;
1635 nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph);
1636 show_autophase(execph);
1638 nsp32_write4(base, BM_CNT, 0);
1639 nsp32_write2(base, TRANSFER_CONTROL, 0);
1642 * MsgIn 02: Save Data Pointer
1645 * Save Data Pointer is received. Adjust pointer.
1648 * SCSI-3 says if Save Data Pointer is not received, then we restart
1649 * processing and we can't adjust any SCSI data pointer in next data
1652 if (execph & MSGIN_02_VALID) {
1653 nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");
1656 * Check sack_cnt/saved_sack_cnt, then adjust sg table if
1659 if (!(execph & MSGIN_00_VALID) &&
1660 ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {
1661 unsigned int sacklen, s_sacklen;
1664 * Read SACK count and SAVEDSACK count, then compare.
1666 sacklen = nsp32_read4(base, SACK_CNT );
1667 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
1670 * If SAVEDSACKCNT == 0, it means SavedDataPointer is
1671 * come after data transfering.
1673 if (s_sacklen > 0) {
1675 * Comparing between sack and savedsack to
1676 * check the condition of AutoMsgIn03.
1678 * If they are same, set msgin03 == TRUE,
1679 * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at
1680 * reselection. On the other hand, if they
1681 * aren't same, set msgin03 == FALSE, and
1682 * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at
1685 if (sacklen != s_sacklen) {
1686 data->cur_lunt->msgin03 = FALSE;
1688 data->cur_lunt->msgin03 = TRUE;
1691 nsp32_adjust_busfree(SCpnt, s_sacklen);
1695 /* This value has not substitude with valid value yet... */
1696 //data->cur_lunt->save_datp = data->cur_datp;
1703 if (execph & MSGIN_03_VALID) {
1704 /* MsgIn03 was valid to be processed. No need processing. */
1710 if (data->cur_target->sync_flag & SDTR_INITIATOR) {
1712 * SDTR negotiation pulled by the initiator has not
1713 * finished yet. Fall back to ASYNC mode.
1715 nsp32_set_async(data, data->cur_target);
1716 data->cur_target->sync_flag &= ~SDTR_INITIATOR;
1717 data->cur_target->sync_flag |= SDTR_DONE;
1718 } else if (data->cur_target->sync_flag & SDTR_TARGET) {
1720 * SDTR negotiation pulled by the target has been
1723 if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {
1725 * If valid message is received, then
1726 * negotiation is succeeded.
1730 * On the contrary, if unexpected bus free is
1731 * occurred, then negotiation is failed. Fall
1732 * back to ASYNC mode.
1734 nsp32_set_async(data, data->cur_target);
1736 data->cur_target->sync_flag &= ~SDTR_TARGET;
1737 data->cur_target->sync_flag |= SDTR_DONE;
1741 * It is always ensured by SCSI standard that initiator
1742 * switches into Bus Free Phase after
1743 * receiving message 00 (Command Complete), 04 (Disconnect).
1744 * It's the reason that processing here is valid.
1746 if (execph & MSGIN_00_VALID) {
1747 /* MsgIn 00: Command Complete */
1748 nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");
1750 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1751 SCpnt->SCp.Message = 0;
1752 nsp32_dbg(NSP32_DEBUG_BUSFREE,
1753 "normal end stat=0x%x resid=0x%x\n",
1754 SCpnt->SCp.Status, SCpnt->resid);
1755 SCpnt->result = (DID_OK << 16) |
1756 (SCpnt->SCp.Message << 8) |
1757 (SCpnt->SCp.Status << 0);
1758 nsp32_scsi_done(SCpnt);
1759 /* All operation is done */
1761 } else if (execph & MSGIN_04_VALID) {
1762 /* MsgIn 04: Disconnect */
1763 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1764 SCpnt->SCp.Message = 4;
1766 nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");
1769 /* Unexpected bus free */
1770 nsp32_msg(KERN_WARNING, "unexpected bus free occurred");
1773 //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
1774 SCpnt->result = DID_ERROR << 16;
1775 nsp32_scsi_done(SCpnt);
1783 * nsp32_adjust_busfree - adjusting SG table
1785 * Note: This driver adjust the SG table using SCSI ACK
1786 * counter instead of BMCNT counter!
1788 static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen)
1790 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1791 int old_entry = data->cur_entry;
1793 int sg_num = data->cur_lunt->sg_num;
1794 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
1795 unsigned int restlen, sentlen;
1798 nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", SCpnt->resid);
1800 /* adjust saved SACK count with 4 byte start address boundary */
1801 s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;
1804 * calculate new_entry from sack count and each sgt[].len
1805 * calculate the byte which is intent to send
1808 for (new_entry = old_entry; new_entry < sg_num; new_entry++) {
1809 sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND);
1810 if (sentlen > s_sacklen) {
1815 /* all sgt is processed */
1816 if (new_entry == sg_num) {
1820 if (sentlen == s_sacklen) {
1821 /* XXX: confirm it's ok or not */
1822 /* In this case, it's ok because we are at
1823 the head element of the sg. restlen is correctly calculated. */
1826 /* calculate the rest length for transfering */
1827 restlen = sentlen - s_sacklen;
1829 /* update adjusting current SG table entry */
1830 len = le32_to_cpu(sgt[new_entry].len);
1831 addr = le32_to_cpu(sgt[new_entry].addr);
1832 addr += (len - restlen);
1833 sgt[new_entry].addr = cpu_to_le32(addr);
1834 sgt[new_entry].len = cpu_to_le32(restlen);
1836 /* set cur_entry with new_entry */
1837 data->cur_entry = new_entry;
1842 if (SCpnt->resid < sentlen) {
1843 nsp32_msg(KERN_ERR, "resid underflow");
1846 SCpnt->resid -= sentlen;
1847 nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", SCpnt->resid);
1849 /* update hostdata and lun */
1856 * It's called MsgOut phase occur.
1857 * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in
1858 * message out phase. It, however, has more than 3 messages,
1859 * HBA creates the interrupt and we have to process by hand.
1861 static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt)
1863 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1864 unsigned int base = SCpnt->device->host->io_port;
1865 //unsigned short command;
1869 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
1870 "enter: msgout_len: 0x%x", data->msgout_len);
1873 * If MsgOut phase is occurred without having any
1874 * message, then No_Operation is sent (SCSI-2).
1876 if (data->msgout_len == 0) {
1877 nsp32_build_nop(SCpnt);
1881 * Set SGTP ADDR current entry for restarting AUTOSCSI,
1882 * because SGTP is incremented next point.
1883 * There is few statement in the specification...
1885 new_sgtp = data->cur_lunt->sglun_paddr +
1886 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
1891 for (i = 0; i < data->msgout_len; i++) {
1892 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
1893 "%d : 0x%x", i, data->msgoutbuf[i]);
1896 * Check REQ is asserted.
1898 nsp32_wait_req(data, ASSERT);
1900 if (i == (data->msgout_len - 1)) {
1902 * If the last message, set the AutoSCSI restart
1903 * before send back the ack message. AutoSCSI
1904 * restart automatically negate ATN signal.
1906 //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
1907 //nsp32_restart_autoscsi(SCpnt, command);
1908 nsp32_write2(base, COMMAND_CONTROL,
1909 (CLEAR_CDB_FIFO_POINTER |
1910 AUTO_COMMAND_PHASE |
1912 AUTO_MSGIN_00_OR_04 |
1916 * Write data with SACK, then wait sack is
1917 * automatically negated.
1919 nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);
1920 nsp32_wait_sack(data, NEGATE);
1922 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",
1923 nsp32_read1(base, SCSI_BUS_MONITOR));
1926 data->msgout_len = 0;
1928 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");
1934 * Note: Restarting AutoSCSI needs set:
1935 * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL
1937 static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command)
1939 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1940 unsigned int base = data->BaseAddress;
1941 unsigned short transfer = 0;
1943 nsp32_dbg(NSP32_DEBUG_RESTART, "enter");
1945 if (data->cur_target == NULL || data->cur_lunt == NULL) {
1946 nsp32_msg(KERN_ERR, "Target or Lun is invalid");
1951 * Don't set BM_START_ADR before setting this register.
1953 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
1958 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
1961 * set SREQ hazard killer sampling rate
1963 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
1966 * set SGT ADDR (physical address)
1968 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
1971 * set TRANSFER CONTROL REG
1974 transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
1975 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
1976 if (SCpnt->request_bufflen > 0) {
1977 transfer |= BM_START;
1979 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
1980 transfer |= CB_MMIO_MODE;
1981 } else if (data->trans_method & NSP32_TRANSFER_PIO) {
1982 transfer |= CB_IO_MODE;
1984 nsp32_write2(base, TRANSFER_CONTROL, transfer);
1989 * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?
1991 command |= (CLEAR_CDB_FIFO_POINTER |
1992 AUTO_COMMAND_PHASE |
1994 nsp32_write2(base, COMMAND_CONTROL, command);
1996 nsp32_dbg(NSP32_DEBUG_RESTART, "exit");
2001 * cannot run automatically message in occur
2003 static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt,
2004 unsigned long irq_status,
2005 unsigned short execph)
2007 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2008 unsigned int base = SCpnt->device->host->io_port;
2010 unsigned char msgtype;
2011 unsigned char newlun;
2012 unsigned short command = 0;
2013 int msgclear = TRUE;
2018 * read first message
2019 * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure
2020 * of Message-In have to be processed before sending back SCSI ACK.
2022 msg = nsp32_read1(base, SCSI_DATA_IN);
2023 data->msginbuf[(unsigned char)data->msgin_len] = msg;
2024 msgtype = data->msginbuf[0];
2025 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,
2026 "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",
2027 data->msgin_len, msg, msgtype);
2030 * TODO: We need checking whether bus phase is message in?
2036 nsp32_sack_assert(data);
2039 * processing IDENTIFY
2041 if (msgtype & 0x80) {
2042 if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {
2043 /* Invalid (non reselect) phase */
2047 newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */
2048 ret = nsp32_reselection(SCpnt, newlun);
2057 * processing messages except for IDENTIFY
2059 * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.
2065 case COMMAND_COMPLETE:
2068 * These messages should not be occurred.
2069 * They should be processed on AutoSCSI sequencer.
2071 nsp32_msg(KERN_WARNING,
2072 "unexpected message of AutoSCSI MsgIn: 0x%x", msg);
2075 case RESTORE_POINTERS:
2077 * AutoMsgIn03 is disabled, and HBA gets this message.
2080 if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {
2081 unsigned int s_sacklen;
2083 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
2084 if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {
2085 nsp32_adjust_busfree(SCpnt, s_sacklen);
2087 /* No need to rewrite SGT */
2090 data->cur_lunt->msgin03 = FALSE;
2092 /* Update with the new value */
2094 /* reset SACK/SavedACK counter (or ALL clear?) */
2095 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
2098 * set new sg pointer
2100 new_sgtp = data->cur_lunt->sglun_paddr +
2101 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
2102 nsp32_write4(base, SGT_ADR, new_sgtp);
2108 * These messages should not be occurred.
2109 * They should be processed on AutoSCSI sequencer.
2111 nsp32_msg (KERN_WARNING,
2112 "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");
2116 case MESSAGE_REJECT:
2117 /* If previous message_out is sending SDTR, and get
2118 message_reject from target, SDTR negotiation is failed */
2119 if (data->cur_target->sync_flag &
2120 (SDTR_INITIATOR | SDTR_TARGET)) {
2122 * Current target is negotiating SDTR, but it's
2123 * failed. Fall back to async transfer mode, and set
2126 nsp32_set_async(data, data->cur_target);
2127 data->cur_target->sync_flag &= ~SDTR_INITIATOR;
2128 data->cur_target->sync_flag |= SDTR_DONE;
2133 case LINKED_CMD_COMPLETE:
2134 case LINKED_FLG_CMD_COMPLETE:
2135 /* queue tag is not supported currently */
2136 nsp32_msg (KERN_WARNING,
2137 "unsupported message: 0x%x", msgtype);
2140 case INITIATE_RECOVERY:
2141 /* staring ECA (Extended Contingent Allegiance) state. */
2142 /* This message is declined in SPI2 or later. */
2149 case SIMPLE_QUEUE_TAG:
2152 * 0x23: Ignore_Wide_Residue is not declared in scsi.h.
2153 * No support is needed.
2155 if (data->msgin_len >= 1) {
2159 /* current position is 1-byte of 2 byte */
2167 case EXTENDED_MESSAGE:
2168 if (data->msgin_len < 1) {
2170 * Current position does not reach 2-byte
2171 * (2-byte is extended message length).
2177 if ((data->msginbuf[1] + 1) > data->msgin_len) {
2179 * Current extended message has msginbuf[1] + 2
2180 * (msgin_len starts counting from 0, so buf[1] + 1).
2181 * If current message position is not finished,
2182 * continue receiving message.
2189 * Reach here means regular length of each type of
2190 * extended messages.
2192 switch (data->msginbuf[2]) {
2193 case EXTENDED_MODIFY_DATA_POINTER:
2195 goto reject; /* not implemented yet */
2200 * Exchange this message between initiator and target.
2202 if (data->msgin_len != EXTENDED_SDTR_LEN + 1) {
2204 * received inappropriate message.
2210 nsp32_analyze_sdtr(SCpnt);
2214 case EXTENDED_EXTENDED_IDENTIFY:
2215 /* SCSI-I only, not supported. */
2216 goto reject; /* not implemented yet */
2221 goto reject; /* not implemented yet */
2235 if (msgclear == TRUE) {
2236 data->msgin_len = 0;
2239 * If restarting AutoSCSI, but there are some message to out
2240 * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0
2241 * (MV_VALID = 0). When commandcontrol is written with
2242 * AutoSCSI restart, at the same time MsgOutOccur should be
2243 * happened (however, such situation is really possible...?).
2245 if (data->msgout_len > 0) {
2246 nsp32_write4(base, SCSI_MSG_OUT, 0);
2247 command |= AUTO_ATN;
2252 * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.
2254 command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
2257 * If current msgin03 is TRUE, then flag on.
2259 if (data->cur_lunt->msgin03 == TRUE) {
2260 command |= AUTO_MSGIN_03;
2262 data->cur_lunt->msgin03 = FALSE;
2270 nsp32_restart_autoscsi(SCpnt, command);
2273 * wait SCSI REQ negate for REQ-ACK handshake
2275 nsp32_wait_req(data, NEGATE);
2280 nsp32_sack_negate(data);
2282 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
2287 nsp32_msg(KERN_WARNING,
2288 "invalid or unsupported MessageIn, rejected. "
2289 "current msg: 0x%x (len: 0x%x), processing msg: 0x%x",
2290 msg, data->msgin_len, msgtype);
2291 nsp32_build_reject(SCpnt);
2292 data->msgin_len = 0;
2300 static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt)
2302 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2303 nsp32_target *target = data->cur_target;
2304 nsp32_sync_table *synct;
2305 unsigned char get_period = data->msginbuf[3];
2306 unsigned char get_offset = data->msginbuf[4];
2310 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");
2312 synct = data->synct;
2313 syncnum = data->syncnum;
2316 * If this inititor sent the SDTR message, then target responds SDTR,
2317 * initiator SYNCREG, ACKWIDTH from SDTR parameter.
2318 * Messages are not appropriate, then send back reject message.
2319 * If initiator did not send the SDTR, but target sends SDTR,
2320 * initiator calculator the appropriate parameter and send back SDTR.
2322 if (target->sync_flag & SDTR_INITIATOR) {
2324 * Initiator sent SDTR, the target responds and
2325 * send back negotiation SDTR.
2327 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");
2329 target->sync_flag &= ~SDTR_INITIATOR;
2330 target->sync_flag |= SDTR_DONE;
2335 if (get_offset > SYNC_OFFSET) {
2337 * Negotiation is failed, the target send back
2338 * unexpected offset value.
2343 if (get_offset == ASYNC_OFFSET) {
2345 * Negotiation is succeeded, the target want
2346 * to fall back into asynchronous transfer mode.
2353 * Check whether sync period is too short. If too short,
2354 * fall back to async mode. If it's ok, then investigate
2355 * the received sync period. If sync period is acceptable
2356 * between sync table start_period and end_period, then
2357 * set this I_T nexus as sent offset and period.
2358 * If it's not acceptable, send back reject and fall back
2361 if (get_period < data->synct[0].period_num) {
2363 * Negotiation is failed, the target send back
2364 * unexpected period value.
2369 entry = nsp32_search_period_entry(data, target, get_period);
2373 * Target want to use long period which is not
2374 * acceptable NinjaSCSI-32Bi/UDE.
2380 * Set new sync table and offset in this I_T nexus.
2382 nsp32_set_sync_entry(data, target, entry, get_offset);
2384 /* Target send SDTR to initiator. */
2385 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");
2387 target->sync_flag |= SDTR_INITIATOR;
2390 if (get_offset > SYNC_OFFSET) {
2391 /* send back as SYNC_OFFSET */
2392 get_offset = SYNC_OFFSET;
2396 if (get_period < data->synct[0].period_num) {
2397 get_period = data->synct[0].period_num;
2400 entry = nsp32_search_period_entry(data, target, get_period);
2402 if (get_offset == ASYNC_OFFSET || entry < 0) {
2403 nsp32_set_async(data, target);
2404 nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET);
2406 nsp32_set_sync_entry(data, target, entry, get_offset);
2407 nsp32_build_sdtr(SCpnt, get_period, get_offset);
2411 target->period = get_period;
2412 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
2417 * If the current message is unacceptable, send back to the target
2418 * with reject message.
2420 nsp32_build_reject(SCpnt);
2423 nsp32_set_async(data, target); /* set as ASYNC transfer mode */
2426 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");
2432 * Search config entry number matched in sync_table from given
2433 * target and speed period value. If failed to search, return negative value.
2435 static int nsp32_search_period_entry(nsp32_hw_data *data,
2436 nsp32_target *target,
2437 unsigned char period)
2441 if (target->limit_entry >= data->syncnum) {
2442 nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");
2443 target->limit_entry = 0;
2446 for (i = target->limit_entry; i < data->syncnum; i++) {
2447 if (period >= data->synct[i].start_period &&
2448 period <= data->synct[i].end_period) {
2454 * Check given period value is over the sync_table value.
2455 * If so, return max value.
2457 if (i == data->syncnum) {
2466 * target <-> initiator use ASYNC transfer
2468 static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target)
2470 unsigned char period = data->synct[target->limit_entry].period_num;
2472 target->offset = ASYNC_OFFSET;
2474 target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);
2475 target->ackwidth = 0;
2476 target->sample_reg = 0;
2478 nsp32_dbg(NSP32_DEBUG_SYNC, "set async");
2483 * target <-> initiator use maximum SYNC transfer
2485 static void nsp32_set_max_sync(nsp32_hw_data *data,
2486 nsp32_target *target,
2487 unsigned char *period,
2488 unsigned char *offset)
2490 unsigned char period_num, ackwidth;
2492 period_num = data->synct[target->limit_entry].period_num;
2493 *period = data->synct[target->limit_entry].start_period;
2494 ackwidth = data->synct[target->limit_entry].ackwidth;
2495 *offset = SYNC_OFFSET;
2497 target->syncreg = TO_SYNCREG(period_num, *offset);
2498 target->ackwidth = ackwidth;
2499 target->offset = *offset;
2500 target->sample_reg = 0; /* disable SREQ sampling */
2505 * target <-> initiator use entry number speed
2507 static void nsp32_set_sync_entry(nsp32_hw_data *data,
2508 nsp32_target *target,
2510 unsigned char offset)
2512 unsigned char period, ackwidth, sample_rate;
2514 period = data->synct[entry].period_num;
2515 ackwidth = data->synct[entry].ackwidth;
2517 sample_rate = data->synct[entry].sample_rate;
2519 target->syncreg = TO_SYNCREG(period, offset);
2520 target->ackwidth = ackwidth;
2521 target->offset = offset;
2522 target->sample_reg = sample_rate | SAMPLING_ENABLE;
2524 nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");
2529 * It waits until SCSI REQ becomes assertion or negation state.
2531 * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then
2532 * connected target responds SCSI REQ negation. We have to wait
2533 * SCSI REQ becomes negation in order to negate SCSI ACK signal for
2534 * REQ-ACK handshake.
2536 static void nsp32_wait_req(nsp32_hw_data *data, int state)
2538 unsigned int base = data->BaseAddress;
2540 unsigned char bus, req_bit;
2542 if (!((state == ASSERT) || (state == NEGATE))) {
2543 nsp32_msg(KERN_ERR, "unknown state designation");
2546 req_bit = (state == ASSERT ? BUSMON_REQ : 0);
2549 bus = nsp32_read1(base, SCSI_BUS_MONITOR);
2550 if ((bus & BUSMON_REQ) == req_bit) {
2551 nsp32_dbg(NSP32_DEBUG_WAIT,
2552 "wait_time: %d", wait_time);
2557 } while (wait_time < REQSACK_TIMEOUT_TIME);
2559 nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit);
2563 * It waits until SCSI SACK becomes assertion or negation state.
2565 static void nsp32_wait_sack(nsp32_hw_data *data, int state)
2567 unsigned int base = data->BaseAddress;
2569 unsigned char bus, ack_bit;
2571 if (!((state == ASSERT) || (state == NEGATE))) {
2572 nsp32_msg(KERN_ERR, "unknown state designation");
2575 ack_bit = (state == ASSERT ? BUSMON_ACK : 0);
2578 bus = nsp32_read1(base, SCSI_BUS_MONITOR);
2579 if ((bus & BUSMON_ACK) == ack_bit) {
2580 nsp32_dbg(NSP32_DEBUG_WAIT,
2581 "wait_time: %d", wait_time);
2586 } while (wait_time < REQSACK_TIMEOUT_TIME);
2588 nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit);
2594 * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.
2596 static void nsp32_sack_assert(nsp32_hw_data *data)
2598 unsigned int base = data->BaseAddress;
2599 unsigned char busctrl;
2601 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
2602 busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);
2603 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
2609 static void nsp32_sack_negate(nsp32_hw_data *data)
2611 unsigned int base = data->BaseAddress;
2612 unsigned char busctrl;
2614 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
2615 busctrl &= ~BUSCTL_ACK;
2616 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
2622 * Note: n_io_port is defined as 0x7f because I/O register port is
2624 * 0x800-0x8ff: memory mapped I/O port
2625 * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
2626 * 0xc00-0xfff: CardBus status registers
2628 static int nsp32_detect(struct pci_dev *pdev)
2630 struct Scsi_Host *host; /* registered host structure */
2631 struct resource *res;
2632 nsp32_hw_data *data;
2636 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
2639 * register this HBA as SCSI device
2641 host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
2643 nsp32_msg (KERN_ERR, "failed to scsi register");
2650 data = (nsp32_hw_data *)host->hostdata;
2652 memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data));
2654 host->irq = data->IrqNumber;
2655 host->io_port = data->BaseAddress;
2656 host->unique_id = data->BaseAddress;
2657 host->n_io_port = data->NumAddress;
2658 host->base = (unsigned long)data->MmioAddress;
2661 spin_lock_init(&(data->Lock));
2663 data->cur_lunt = NULL;
2664 data->cur_target = NULL;
2667 * Bus master transfer mode is supported currently.
2669 data->trans_method = NSP32_TRANSFER_BUSMASTER;
2672 * Set clock div, CLOCK_4 (HBA has own external clock, and
2673 * dividing * 100ns/4).
2674 * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.
2676 data->clock = CLOCK_4;
2679 * Select appropriate nsp32_sync_table and set I_CLOCKDIV.
2681 switch (data->clock) {
2683 /* If data->clock is CLOCK_4, then select 40M sync table. */
2684 data->synct = nsp32_sync_table_40M;
2685 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
2688 /* If data->clock is CLOCK_2, then select 20M sync table. */
2689 data->synct = nsp32_sync_table_20M;
2690 data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M);
2693 /* If data->clock is PCICLK, then select pci sync table. */
2694 data->synct = nsp32_sync_table_pci;
2695 data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci);
2698 nsp32_msg(KERN_WARNING,
2699 "Invalid clock div is selected, set CLOCK_4.");
2700 /* Use default value CLOCK_4 */
2701 data->clock = CLOCK_4;
2702 data->synct = nsp32_sync_table_40M;
2703 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
2713 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) {
2714 nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
2715 goto scsi_unregister;
2719 * allocate autoparam DMA resource.
2721 data->autoparam = pci_alloc_consistent(pdev, sizeof(nsp32_autoparam), &(data->auto_paddr));
2722 if (data->autoparam == NULL) {
2723 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
2724 goto scsi_unregister;
2728 * allocate scatter-gather DMA resource.
2730 data->sg_list = pci_alloc_consistent(pdev, NSP32_SG_TABLE_SIZE,
2732 if (data->sg_list == NULL) {
2733 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
2734 goto free_autoparam;
2737 for (i = 0; i < ARRAY_SIZE(data->lunt); i++) {
2738 for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) {
2739 int offset = i * ARRAY_SIZE(data->lunt[0]) + j;
2746 .sglun = &(data->sg_list[offset]),
2747 .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)),
2750 data->lunt[i][j] = tmp;
2757 for (i = 0; i < ARRAY_SIZE(data->target); i++) {
2758 nsp32_target *target = &(data->target[i]);
2760 target->limit_entry = 0;
2761 target->sync_flag = 0;
2762 nsp32_set_async(data, target);
2768 ret = nsp32_getprom_param(data);
2770 data->resettime = 3; /* default 3 */
2778 snprintf(data->info_str, sizeof(data->info_str),
2779 "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",
2780 host->irq, host->io_port, host->n_io_port);
2785 * Note: It's important to reset SCSI bus in initialization phase.
2786 * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when
2787 * system is coming up, so SCSI devices connected to HBA is set as
2788 * un-asynchronous mode. It brings the merit that this HBA is
2789 * ready to start synchronous transfer without any preparation,
2790 * but we are difficult to control transfer speed. In addition,
2791 * it prevents device transfer speed from effecting EEPROM start-up
2792 * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as
2793 * Auto Mode, then FAST-10M is selected when SCSI devices are
2794 * connected same or more than 4 devices. It should be avoided
2795 * depending on this specification. Thus, resetting the SCSI bus
2796 * restores all connected SCSI devices to asynchronous mode, then
2797 * this driver set SDTR safely later, and we can control all SCSI
2798 * device transfer mode.
2800 nsp32_do_bus_reset(data);
2802 ret = request_irq(host->irq, do_nsp32_isr, IRQF_SHARED, "nsp32", data);
2804 nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 "
2805 "SCSI PCI controller. Interrupt: %d", host->irq);
2812 res = request_region(host->io_port, host->n_io_port, "nsp32");
2815 "I/O region 0x%lx+0x%lx is already used",
2816 data->BaseAddress, data->NumAddress);
2820 ret = scsi_add_host(host, &pdev->dev);
2822 nsp32_msg(KERN_ERR, "failed to add scsi host");
2825 scsi_scan_host(host);
2826 pci_set_drvdata(pdev, host);
2830 release_region(host->io_port, host->n_io_port);
2833 free_irq(host->irq, data);
2836 pci_free_consistent(pdev, NSP32_SG_TABLE_SIZE,
2837 data->sg_list, data->sg_paddr);
2840 pci_free_consistent(pdev, sizeof(nsp32_autoparam),
2841 data->autoparam, data->auto_paddr);
2844 scsi_host_put(host);
2850 static int nsp32_release(struct Scsi_Host *host)
2852 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
2854 if (data->autoparam) {
2855 pci_free_consistent(data->Pci, sizeof(nsp32_autoparam),
2856 data->autoparam, data->auto_paddr);
2859 if (data->sg_list) {
2860 pci_free_consistent(data->Pci, NSP32_SG_TABLE_SIZE,
2861 data->sg_list, data->sg_paddr);
2865 free_irq(host->irq, data);
2868 if (host->io_port && host->n_io_port) {
2869 release_region(host->io_port, host->n_io_port);
2872 if (data->MmioAddress) {
2873 iounmap(data->MmioAddress);
2879 static const char *nsp32_info(struct Scsi_Host *shpnt)
2881 nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
2883 return data->info_str;
2887 /****************************************************************************
2890 static int nsp32_eh_abort(struct scsi_cmnd *SCpnt)
2892 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2893 unsigned int base = SCpnt->device->host->io_port;
2895 nsp32_msg(KERN_WARNING, "abort");
2897 if (data->cur_lunt->SCpnt == NULL) {
2898 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed");
2902 if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {
2903 /* reset SDTR negotiation */
2904 data->cur_target->sync_flag = 0;
2905 nsp32_set_async(data, data->cur_target);
2908 nsp32_write2(base, TRANSFER_CONTROL, 0);
2909 nsp32_write2(base, BM_CNT, 0);
2911 SCpnt->result = DID_ABORT << 16;
2912 nsp32_scsi_done(SCpnt);
2914 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success");
2918 static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt)
2920 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2921 unsigned int base = SCpnt->device->host->io_port;
2923 spin_lock_irq(SCpnt->device->host->host_lock);
2925 nsp32_msg(KERN_INFO, "Bus Reset");
2926 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
2928 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
2929 nsp32_do_bus_reset(data);
2930 nsp32_write2(base, IRQ_CONTROL, 0);
2932 spin_unlock_irq(SCpnt->device->host->host_lock);
2933 return SUCCESS; /* SCSI bus reset is succeeded at any time. */
2936 static void nsp32_do_bus_reset(nsp32_hw_data *data)
2938 unsigned int base = data->BaseAddress;
2939 unsigned short intrdat;
2942 nsp32_dbg(NSP32_DEBUG_BUSRESET, "in");
2946 * clear TRANSFERCONTROL_BM_START
2949 nsp32_write2(base, TRANSFER_CONTROL, 0);
2950 nsp32_write4(base, BM_CNT, 0);
2951 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
2954 * fall back to asynchronous transfer mode
2955 * initialize SDTR negotiation flag
2957 for (i = 0; i < ARRAY_SIZE(data->target); i++) {
2958 nsp32_target *target = &data->target[i];
2960 target->sync_flag = 0;
2961 nsp32_set_async(data, target);
2967 nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
2968 udelay(RESET_HOLD_TIME);
2969 nsp32_write1(base, SCSI_BUS_CONTROL, 0);
2970 for(i = 0; i < 5; i++) {
2971 intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
2972 nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);
2975 data->CurrentSC = NULL;
2978 static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt)
2980 struct Scsi_Host *host = SCpnt->device->host;
2981 unsigned int base = SCpnt->device->host->io_port;
2982 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
2984 nsp32_msg(KERN_INFO, "Host Reset");
2985 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
2987 spin_lock_irq(SCpnt->device->host->host_lock);
2990 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
2991 nsp32_do_bus_reset(data);
2992 nsp32_write2(base, IRQ_CONTROL, 0);
2994 spin_unlock_irq(SCpnt->device->host->host_lock);
2995 return SUCCESS; /* Host reset is succeeded at any time. */
2999 /**************************************************************************
3004 * getting EEPROM parameter
3006 static int nsp32_getprom_param(nsp32_hw_data *data)
3008 int vendor = data->pci_devid->vendor;
3009 int device = data->pci_devid->device;
3015 ret = nsp32_prom_read(data, 0x7e);
3017 nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret);
3020 ret = nsp32_prom_read(data, 0x7f);
3022 nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret);
3029 if (vendor == PCI_VENDOR_ID_WORKBIT &&
3030 device == PCI_DEVICE_ID_WORKBIT_STANDARD) {
3031 ret = nsp32_getprom_c16(data);
3032 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&
3033 device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) {
3034 ret = nsp32_getprom_at24(data);
3035 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&
3036 device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) {
3037 ret = nsp32_getprom_at24(data);
3039 nsp32_msg(KERN_WARNING, "Unknown EEPROM");
3043 /* for debug : SPROM data full checking */
3044 for (i = 0; i <= 0x1f; i++) {
3045 val = nsp32_prom_read(data, i);
3046 nsp32_dbg(NSP32_DEBUG_EEPROM,
3047 "rom address 0x%x : 0x%x", i, val);
3055 * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map:
3058 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
3059 * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M
3060 * 0x07 : HBA Synchronous Transfer Period
3061 * Value 0: AutoSync, 1: Manual Setting
3062 * 0x08 - 0x0f : Not Used? (0x0)
3063 * 0x10 : Bus Termination
3064 * Value 0: Auto[ON], 1: ON, 2: OFF
3065 * 0x11 : Not Used? (0)
3066 * 0x12 : Bus Reset Delay Time (0x03)
3067 * 0x13 : Bootable CD Support
3068 * Value 0: Disable, 1: Enable
3069 * 0x14 : Device Scan
3070 * Bit 7 6 5 4 3 2 1 0
3071 * | <----------------->
3072 * | SCSI ID: Value 0: Skip, 1: YES
3073 * |-> Value 0: ALL scan, Value 1: Manual
3074 * 0x15 - 0x1b : Not Used? (0)
3075 * 0x1c : Constant? (0x01) (clock div?)
3076 * 0x1d - 0x7c : Not Used (0xff)
3077 * 0x7d : Not Used? (0xff)
3078 * 0x7e : Constant (0x55), Validity signature
3079 * 0x7f : Constant (0xaa), Validity signature
3081 static int nsp32_getprom_at24(nsp32_hw_data *data)
3085 nsp32_target *target;
3089 * Reset time which is designated by EEPROM.
3091 * TODO: Not used yet.
3093 data->resettime = nsp32_prom_read(data, 0x12);
3096 * HBA Synchronous Transfer Period
3098 * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says
3099 * that if auto_sync is 0 (auto), and connected SCSI devices are
3100 * same or lower than 3, then transfer speed is set as ULTRA-20M.
3101 * On the contrary if connected SCSI devices are same or higher
3102 * than 4, then transfer speed is set as FAST-10M.
3104 * I break this rule. The number of connected SCSI devices are
3105 * only ignored. If auto_sync is 0 (auto), then transfer speed is
3106 * forced as ULTRA-20M.
3108 ret = nsp32_prom_read(data, 0x07);
3117 nsp32_msg(KERN_WARNING,
3118 "Unsupported Auto Sync mode. Fall back to manual mode.");
3122 if (trans_mode == ULTRA20M_MODE) {
3127 * each device Synchronous Transfer Period
3129 for (i = 0; i < NSP32_HOST_SCSIID; i++) {
3130 target = &data->target[i];
3131 if (auto_sync == TRUE) {
3132 target->limit_entry = 0; /* set as ULTRA20M */
3134 ret = nsp32_prom_read(data, i);
3135 entry = nsp32_search_period_entry(data, target, ret);
3137 /* search failed... set maximum speed */
3140 target->limit_entry = entry;
3149 * C16 110 (I-O Data: SC-NBD) data map:
3152 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
3153 * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC
3154 * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync)
3155 * 0x08 - 0x0f : Not Used? (0x0)
3156 * 0x10 : Transfer Mode
3157 * Value 0: PIO, 1: Busmater
3158 * 0x11 : Bus Reset Delay Time (0x00-0x20)
3159 * 0x12 : Bus Termination
3160 * Value 0: Disable, 1: Enable
3161 * 0x13 - 0x19 : Disconnection
3162 * Value 0: Disable, 1: Enable
3163 * 0x1a - 0x7c : Not Used? (0)
3164 * 0x7d : Not Used? (0xf8)
3165 * 0x7e : Constant (0x55), Validity signature
3166 * 0x7f : Constant (0xaa), Validity signature
3168 static int nsp32_getprom_c16(nsp32_hw_data *data)
3171 nsp32_target *target;
3175 * Reset time which is designated by EEPROM.
3177 * TODO: Not used yet.
3179 data->resettime = nsp32_prom_read(data, 0x11);
3182 * each device Synchronous Transfer Period
3184 for (i = 0; i < NSP32_HOST_SCSIID; i++) {
3185 target = &data->target[i];
3186 ret = nsp32_prom_read(data, i);
3188 case 0: /* 20MB/s */
3191 case 1: /* 10MB/s */
3200 default: /* default 20MB/s */
3204 entry = nsp32_search_period_entry(data, target, val);
3205 if (entry < 0 || trans_mode == ULTRA20M_MODE) {
3206 /* search failed... set maximum speed */
3209 target->limit_entry = entry;
3217 * Atmel AT24C01A (drived in 5V) serial EEPROM routines
3219 static int nsp32_prom_read(nsp32_hw_data *data, int romaddr)
3223 /* start condition */
3224 nsp32_prom_start(data);
3226 /* device address */
3227 nsp32_prom_write_bit(data, 1); /* 1 */
3228 nsp32_prom_write_bit(data, 0); /* 0 */
3229 nsp32_prom_write_bit(data, 1); /* 1 */
3230 nsp32_prom_write_bit(data, 0); /* 0 */
3231 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
3232 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
3233 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
3235 /* R/W: W for dummy write */
3236 nsp32_prom_write_bit(data, 0);
3239 nsp32_prom_write_bit(data, 0);
3242 for (i = 7; i >= 0; i--) {
3243 nsp32_prom_write_bit(data, ((romaddr >> i) & 1));
3247 nsp32_prom_write_bit(data, 0);
3249 /* start condition */
3250 nsp32_prom_start(data);
3252 /* device address */
3253 nsp32_prom_write_bit(data, 1); /* 1 */
3254 nsp32_prom_write_bit(data, 0); /* 0 */
3255 nsp32_prom_write_bit(data, 1); /* 1 */
3256 nsp32_prom_write_bit(data, 0); /* 0 */
3257 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
3258 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
3259 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
3262 nsp32_prom_write_bit(data, 1);
3265 nsp32_prom_write_bit(data, 0);
3269 for (i = 7; i >= 0; i--) {
3270 val += (nsp32_prom_read_bit(data) << i);
3274 nsp32_prom_write_bit(data, 1);
3276 /* stop condition */
3277 nsp32_prom_stop(data);
3282 static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val)
3284 int base = data->BaseAddress;
3287 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL);
3295 nsp32_index_write1(base, SERIAL_ROM_CTL, tmp);
3300 static int nsp32_prom_get(nsp32_hw_data *data, int bit)
3302 int base = data->BaseAddress;
3306 nsp32_msg(KERN_ERR, "return value is not appropriate");
3311 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;
3324 static void nsp32_prom_start (nsp32_hw_data *data)
3326 /* start condition */
3327 nsp32_prom_set(data, SCL, 1);
3328 nsp32_prom_set(data, SDA, 1);
3329 nsp32_prom_set(data, ENA, 1); /* output mode */
3330 nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting
3331 * SDA 1->0 is start condition */
3332 nsp32_prom_set(data, SCL, 0);
3335 static void nsp32_prom_stop (nsp32_hw_data *data)
3337 /* stop condition */
3338 nsp32_prom_set(data, SCL, 1);
3339 nsp32_prom_set(data, SDA, 0);
3340 nsp32_prom_set(data, ENA, 1); /* output mode */
3341 nsp32_prom_set(data, SDA, 1);
3342 nsp32_prom_set(data, SCL, 0);
3345 static void nsp32_prom_write_bit(nsp32_hw_data *data, int val)
3348 nsp32_prom_set(data, SDA, val);
3349 nsp32_prom_set(data, SCL, 1 );
3350 nsp32_prom_set(data, SCL, 0 );
3353 static int nsp32_prom_read_bit(nsp32_hw_data *data)
3358 nsp32_prom_set(data, ENA, 0); /* input mode */
3359 nsp32_prom_set(data, SCL, 1);
3361 val = nsp32_prom_get(data, SDA);
3363 nsp32_prom_set(data, SCL, 0);
3364 nsp32_prom_set(data, ENA, 1); /* output mode */
3370 /**************************************************************************
3375 /* Device suspended */
3376 static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state)
3378 struct Scsi_Host *host = pci_get_drvdata(pdev);
3380 nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host);
3382 pci_save_state (pdev);
3383 pci_disable_device (pdev);
3384 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3389 /* Device woken up */
3390 static int nsp32_resume(struct pci_dev *pdev)
3392 struct Scsi_Host *host = pci_get_drvdata(pdev);
3393 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
3396 nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host);
3398 pci_set_power_state(pdev, PCI_D0);
3399 pci_enable_wake (pdev, PCI_D0, 0);
3400 pci_restore_state (pdev);
3402 reg = nsp32_read2(data->BaseAddress, INDEX_REG);
3404 nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg);
3406 if (reg == 0xffff) {
3407 nsp32_msg(KERN_INFO, "missing device. abort resume.");
3411 nsp32hw_init (data);
3412 nsp32_do_bus_reset(data);
3414 nsp32_msg(KERN_INFO, "resume success");
3419 /* Enable wake event */
3420 static int nsp32_enable_wake(struct pci_dev *pdev, pci_power_t state, int enable)
3422 struct Scsi_Host *host = pci_get_drvdata(pdev);
3424 nsp32_msg(KERN_INFO, "pci-enable_wake: stub, pdev=0x%p, enable=%d, slot=%s, host=0x%p", pdev, enable, pci_name(pdev), host);
3430 /************************************************************************
3431 * PCI/Cardbus probe/remove routine
3433 static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3436 nsp32_hw_data *data = &nsp32_data_base;
3438 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
3440 ret = pci_enable_device(pdev);
3442 nsp32_msg(KERN_ERR, "failed to enable pci device");
3447 data->pci_devid = id;
3448 data->IrqNumber = pdev->irq;
3449 data->BaseAddress = pci_resource_start(pdev, 0);
3450 data->NumAddress = pci_resource_len (pdev, 0);
3451 data->MmioAddress = ioremap_nocache(pci_resource_start(pdev, 1),
3452 pci_resource_len (pdev, 1));
3453 data->MmioLength = pci_resource_len (pdev, 1);
3455 pci_set_master(pdev);
3457 ret = nsp32_detect(pdev);
3459 nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s",
3461 data->MmioAddress, data->MmioLength,
3463 nsp32_model[id->driver_data]);
3465 nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret);
3470 static void __devexit nsp32_remove(struct pci_dev *pdev)
3472 struct Scsi_Host *host = pci_get_drvdata(pdev);
3474 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
3476 scsi_remove_host(host);
3478 nsp32_release(host);
3480 scsi_host_put(host);
3483 static struct pci_driver nsp32_driver = {
3485 .id_table = nsp32_pci_table,
3486 .probe = nsp32_probe,
3487 .remove = __devexit_p(nsp32_remove),
3489 .suspend = nsp32_suspend,
3490 .resume = nsp32_resume,
3491 .enable_wake = nsp32_enable_wake,
3495 /*********************************************************************
3498 static int __init init_nsp32(void) {
3499 nsp32_msg(KERN_INFO, "loading...");
3500 return pci_register_driver(&nsp32_driver);
3503 static void __exit exit_nsp32(void) {
3504 nsp32_msg(KERN_INFO, "unloading...");
3505 pci_unregister_driver(&nsp32_driver);
3508 module_init(init_nsp32);
3509 module_exit(exit_nsp32);
projects / linux-2.6 / blob