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/module.h>
27 #include <linux/init.h>
28 #include <linux/kernel.h>
29 #include <linux/slab.h>
30 #include <linux/string.h>
31 #include <linux/timer.h>
32 #include <linux/ioport.h>
33 #include <linux/major.h>
34 #include <linux/blkdev.h>
35 #include <linux/interrupt.h>
36 #include <linux/pci.h>
37 #include <linux/delay.h>
38 #include <linux/ctype.h>
39 #include <linux/dma-mapping.h>
42 #include <asm/system.h>
45 #include <scsi/scsi.h>
46 #include <scsi/scsi_cmnd.h>
47 #include <scsi/scsi_device.h>
48 #include <scsi/scsi_host.h>
49 #include <scsi/scsi_ioctl.h>
54 /***********************************************************************
57 static int trans_mode = 0; /* default: BIOS */
58 module_param (trans_mode, int, 0);
59 MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");
61 #define ULTRA20M_MODE 2
63 static int auto_param = 0; /* default: ON */
64 module_param (auto_param, bool, 0);
65 MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");
67 static int disc_priv = 1; /* default: OFF */
68 module_param (disc_priv, bool, 0);
69 MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))");
71 MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
72 MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");
73 MODULE_LICENSE("GPL");
75 static const char *nsp32_release_version = "1.2";
78 /****************************************************************************
81 static struct pci_device_id nsp32_pci_table[] __devinitdata = {
83 .vendor = PCI_VENDOR_ID_IODATA,
84 .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
85 .subvendor = PCI_ANY_ID,
86 .subdevice = PCI_ANY_ID,
87 .driver_data = MODEL_IODATA,
90 .vendor = PCI_VENDOR_ID_WORKBIT,
91 .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
92 .subvendor = PCI_ANY_ID,
93 .subdevice = PCI_ANY_ID,
94 .driver_data = MODEL_KME,
97 .vendor = PCI_VENDOR_ID_WORKBIT,
98 .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
99 .subvendor = PCI_ANY_ID,
100 .subdevice = PCI_ANY_ID,
101 .driver_data = MODEL_WORKBIT,
104 .vendor = PCI_VENDOR_ID_WORKBIT,
105 .device = PCI_DEVICE_ID_WORKBIT_STANDARD,
106 .subvendor = PCI_ANY_ID,
107 .subdevice = PCI_ANY_ID,
108 .driver_data = MODEL_PCI_WORKBIT,
111 .vendor = PCI_VENDOR_ID_WORKBIT,
112 .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
113 .subvendor = PCI_ANY_ID,
114 .subdevice = PCI_ANY_ID,
115 .driver_data = MODEL_LOGITEC,
118 .vendor = PCI_VENDOR_ID_WORKBIT,
119 .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
120 .subvendor = PCI_ANY_ID,
121 .subdevice = PCI_ANY_ID,
122 .driver_data = MODEL_PCI_LOGITEC,
125 .vendor = PCI_VENDOR_ID_WORKBIT,
126 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
127 .subvendor = PCI_ANY_ID,
128 .subdevice = PCI_ANY_ID,
129 .driver_data = MODEL_PCI_MELCO,
132 .vendor = PCI_VENDOR_ID_WORKBIT,
133 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,
134 .subvendor = PCI_ANY_ID,
135 .subdevice = PCI_ANY_ID,
136 .driver_data = MODEL_PCI_MELCO,
140 MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
142 static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */
146 * Period/AckWidth speed conversion table
148 * Note: This period/ackwidth speed table must be in descending order.
150 static nsp32_sync_table nsp32_sync_table_40M[] = {
151 /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */
152 {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */
153 {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */
154 {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
155 {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */
156 {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */
157 {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */
158 {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
159 {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */
160 {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
163 static nsp32_sync_table nsp32_sync_table_20M[] = {
164 {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
165 {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */
166 {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
167 {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
168 {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */
169 {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */
170 {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */
171 {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */
172 {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */
175 static nsp32_sync_table nsp32_sync_table_pci[] = {
176 {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */
177 {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */
178 {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */
179 {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */
180 {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */
181 {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */
182 {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */
183 {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */
184 {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */
188 * function declaration
190 /* module entry point */
191 static int __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *);
192 static void __devexit nsp32_remove(struct pci_dev *);
193 static int __init init_nsp32 (void);
194 static void __exit exit_nsp32 (void);
196 /* struct struct scsi_host_template */
197 static int nsp32_proc_info (struct Scsi_Host *, char *, char **, off_t, int, int);
199 static int nsp32_detect (struct pci_dev *pdev);
200 static int nsp32_queuecommand(struct scsi_cmnd *,
201 void (*done)(struct scsi_cmnd *));
202 static const char *nsp32_info (struct Scsi_Host *);
203 static int nsp32_release (struct Scsi_Host *);
205 /* SCSI error handler */
206 static int nsp32_eh_abort (struct scsi_cmnd *);
207 static int nsp32_eh_bus_reset (struct scsi_cmnd *);
208 static int nsp32_eh_host_reset(struct scsi_cmnd *);
210 /* generate SCSI message */
211 static void nsp32_build_identify(struct scsi_cmnd *);
212 static void nsp32_build_nop (struct scsi_cmnd *);
213 static void nsp32_build_reject (struct scsi_cmnd *);
214 static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, unsigned char);
216 /* SCSI message handler */
217 static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short);
218 static void nsp32_msgout_occur (struct scsi_cmnd *);
219 static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, unsigned short);
221 static int nsp32_setup_sg_table (struct scsi_cmnd *);
222 static int nsp32_selection_autopara(struct scsi_cmnd *);
223 static int nsp32_selection_autoscsi(struct scsi_cmnd *);
224 static void nsp32_scsi_done (struct scsi_cmnd *);
225 static int nsp32_arbitration (struct scsi_cmnd *, unsigned int);
226 static int nsp32_reselection (struct scsi_cmnd *, unsigned char);
227 static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int);
228 static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short);
231 static void nsp32_analyze_sdtr (struct scsi_cmnd *);
232 static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char);
233 static void nsp32_set_async (nsp32_hw_data *, nsp32_target *);
234 static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *);
235 static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char);
237 /* SCSI bus status handler */
238 static void nsp32_wait_req (nsp32_hw_data *, int);
239 static void nsp32_wait_sack (nsp32_hw_data *, int);
240 static void nsp32_sack_assert (nsp32_hw_data *);
241 static void nsp32_sack_negate (nsp32_hw_data *);
242 static void nsp32_do_bus_reset(nsp32_hw_data *);
244 /* hardware interrupt handler */
245 static irqreturn_t do_nsp32_isr(int, void *);
247 /* initialize hardware */
248 static int nsp32hw_init(nsp32_hw_data *);
251 static int nsp32_getprom_param (nsp32_hw_data *);
252 static int nsp32_getprom_at24 (nsp32_hw_data *);
253 static int nsp32_getprom_c16 (nsp32_hw_data *);
254 static void nsp32_prom_start (nsp32_hw_data *);
255 static void nsp32_prom_stop (nsp32_hw_data *);
256 static int nsp32_prom_read (nsp32_hw_data *, int);
257 static int nsp32_prom_read_bit (nsp32_hw_data *);
258 static void nsp32_prom_write_bit(nsp32_hw_data *, int);
259 static void nsp32_prom_set (nsp32_hw_data *, int, int);
260 static int nsp32_prom_get (nsp32_hw_data *, int);
262 /* debug/warning/info message */
263 static void nsp32_message (const char *, int, char *, char *, ...);
265 static void nsp32_dmessage(const char *, int, int, char *, ...);
269 * max_sectors is currently limited up to 128.
271 static struct scsi_host_template nsp32_template = {
272 .proc_name = "nsp32",
273 .name = "Workbit NinjaSCSI-32Bi/UDE",
274 .proc_info = nsp32_proc_info,
276 .queuecommand = nsp32_queuecommand,
278 .sg_tablesize = NSP32_SG_SIZE,
281 .this_id = NSP32_HOST_SCSIID,
282 .use_clustering = DISABLE_CLUSTERING,
283 .eh_abort_handler = nsp32_eh_abort,
284 .eh_bus_reset_handler = nsp32_eh_bus_reset,
285 .eh_host_reset_handler = nsp32_eh_host_reset,
286 /* .highmem_io = 1, */
289 #include "nsp32_io.h"
291 /***********************************************************************
295 # define NSP32_DEBUG_MASK 0x000000
296 # define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args)
297 # define nsp32_dbg(mask, args...) /* */
299 # define NSP32_DEBUG_MASK 0xffffff
300 # define nsp32_msg(type, args...) \
301 nsp32_message (__func__, __LINE__, (type), args)
302 # define nsp32_dbg(mask, args...) \
303 nsp32_dmessage(__func__, __LINE__, (mask), args)
306 #define NSP32_DEBUG_QUEUECOMMAND BIT(0)
307 #define NSP32_DEBUG_REGISTER BIT(1)
308 #define NSP32_DEBUG_AUTOSCSI BIT(2)
309 #define NSP32_DEBUG_INTR BIT(3)
310 #define NSP32_DEBUG_SGLIST BIT(4)
311 #define NSP32_DEBUG_BUSFREE BIT(5)
312 #define NSP32_DEBUG_CDB_CONTENTS BIT(6)
313 #define NSP32_DEBUG_RESELECTION BIT(7)
314 #define NSP32_DEBUG_MSGINOCCUR BIT(8)
315 #define NSP32_DEBUG_EEPROM BIT(9)
316 #define NSP32_DEBUG_MSGOUTOCCUR BIT(10)
317 #define NSP32_DEBUG_BUSRESET BIT(11)
318 #define NSP32_DEBUG_RESTART BIT(12)
319 #define NSP32_DEBUG_SYNC BIT(13)
320 #define NSP32_DEBUG_WAIT BIT(14)
321 #define NSP32_DEBUG_TARGETFLAG BIT(15)
322 #define NSP32_DEBUG_PROC BIT(16)
323 #define NSP32_DEBUG_INIT BIT(17)
324 #define NSP32_SPECIAL_PRINT_REGISTER BIT(20)
326 #define NSP32_DEBUG_BUF_LEN 100
328 static void nsp32_message(const char *func, int line, char *type, char *fmt, ...)
331 char buf[NSP32_DEBUG_BUF_LEN];
334 vsnprintf(buf, sizeof(buf), fmt, args);
338 printk("%snsp32: %s\n", type, buf);
340 printk("%snsp32: %s (%d): %s\n", type, func, line, buf);
345 static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)
348 char buf[NSP32_DEBUG_BUF_LEN];
351 vsnprintf(buf, sizeof(buf), fmt, args);
354 if (mask & NSP32_DEBUG_MASK) {
355 printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
361 # include "nsp32_debug.c"
363 # define show_command(arg) /* */
364 # define show_busphase(arg) /* */
365 # define show_autophase(arg) /* */
371 static void nsp32_build_identify(struct scsi_cmnd *SCpnt)
373 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
374 int pos = data->msgout_len;
377 /* XXX: Auto DiscPriv detection is progressing... */
378 if (disc_priv == 0) {
382 data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;
384 data->msgout_len = pos;
388 * SDTR Message Routine
390 static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt,
391 unsigned char period,
392 unsigned char offset)
394 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
395 int pos = data->msgout_len;
397 data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++;
398 data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;
399 data->msgoutbuf[pos] = EXTENDED_SDTR; pos++;
400 data->msgoutbuf[pos] = period; pos++;
401 data->msgoutbuf[pos] = offset; pos++;
403 data->msgout_len = pos;
407 * No Operation Message
409 static void nsp32_build_nop(struct scsi_cmnd *SCpnt)
411 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
412 int pos = data->msgout_len;
415 nsp32_msg(KERN_WARNING,
416 "Some messages are already contained!");
420 data->msgoutbuf[pos] = NOP; pos++;
421 data->msgout_len = pos;
427 static void nsp32_build_reject(struct scsi_cmnd *SCpnt)
429 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
430 int pos = data->msgout_len;
432 data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;
433 data->msgout_len = pos;
440 static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time)
442 unsigned int base = SCpnt->host->io_port;
444 nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);
446 if (time & (~TIMER_CNT_MASK)) {
447 nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");
450 nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);
456 * set SCSI command and other parameter to asic, and start selection phase
458 static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt)
460 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
461 unsigned int base = SCpnt->device->host->io_port;
462 unsigned int host_id = SCpnt->device->host->this_id;
463 unsigned char target = scmd_id(SCpnt);
464 nsp32_autoparam *param = data->autoparam;
470 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
475 phase = nsp32_read1(base, SCSI_BUS_MONITOR);
476 if (phase != BUSMON_BUS_FREE) {
477 nsp32_msg(KERN_WARNING, "bus busy");
478 show_busphase(phase & BUSMON_PHASE_MASK);
479 SCpnt->result = DID_BUS_BUSY << 16;
486 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
487 * over 3 messages needs another routine.
489 if (data->msgout_len == 0) {
490 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
491 SCpnt->result = DID_ERROR << 16;
493 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
495 for (i = 0; i < data->msgout_len; i++) {
497 * the sending order of the message is:
498 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2
499 * MCNT 2: MSG#1 -> MSG#2
503 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
505 msgout |= MV_VALID; /* MV valid */
506 msgout |= (unsigned int)data->msgout_len; /* len */
508 /* data->msgout_len > 3 */
512 // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT));
513 // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
516 * setup asic parameter
518 memset(param, 0, sizeof(nsp32_autoparam));
521 for (i = 0; i < SCpnt->cmd_len; i++) {
522 param->cdb[4 * i] = SCpnt->cmnd[i];
525 /* outgoing messages */
526 param->msgout = cpu_to_le32(msgout);
528 /* syncreg, ackwidth, target id, SREQ sampling rate */
529 param->syncreg = data->cur_target->syncreg;
530 param->ackwidth = data->cur_target->ackwidth;
531 param->target_id = BIT(host_id) | BIT(target);
532 param->sample_reg = data->cur_target->sample_reg;
534 // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);
536 /* command control */
537 param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |
539 AUTO_MSGIN_00_OR_04 |
544 /* transfer control */
546 switch (data->trans_method) {
547 case NSP32_TRANSFER_BUSMASTER:
550 case NSP32_TRANSFER_MMIO:
553 case NSP32_TRANSFER_PIO:
557 nsp32_msg(KERN_ERR, "unknown trans_method");
561 * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
562 * For bus master transfer, it's taken off.
564 s |= (TRANSFER_GO | ALL_COUNTER_CLR);
565 param->transfer_control = cpu_to_le16(s);
568 param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);
571 * transfer parameter to ASIC
573 nsp32_write4(base, SGT_ADR, data->auto_paddr);
574 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER |
580 ret = nsp32_arbitration(SCpnt, base);
587 * Selection with AUTO SCSI (without AUTO PARAMETER)
589 static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)
591 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
592 unsigned int base = SCpnt->device->host->io_port;
593 unsigned int host_id = SCpnt->device->host->this_id;
594 unsigned char target = scmd_id(SCpnt);
597 unsigned short command = 0;
598 unsigned int msgout = 0;
599 unsigned short execph;
602 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
607 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
612 phase = nsp32_read1(base, SCSI_BUS_MONITOR);
613 if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
614 nsp32_msg(KERN_WARNING, "bus busy");
615 SCpnt->result = DID_BUS_BUSY << 16;
623 execph = nsp32_read2(base, SCSI_EXECUTE_PHASE);
626 * clear FIFO counter to set CDBs
628 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER);
633 for (i = 0; i < SCpnt->cmd_len; i++) {
634 nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);
636 nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);
639 * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID
641 nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target));
644 * set SCSI MSGOUT REG
646 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
647 * over 3 messages needs another routine.
649 if (data->msgout_len == 0) {
650 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
651 SCpnt->result = DID_ERROR << 16;
654 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
656 for (i = 0; i < data->msgout_len; i++) {
658 * the sending order of the message is:
659 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2
660 * MCNT 2: MSG#1 -> MSG#2
664 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
666 msgout |= MV_VALID; /* MV valid */
667 msgout |= (unsigned int)data->msgout_len; /* len */
668 nsp32_write4(base, SCSI_MSG_OUT, msgout);
670 /* data->msgout_len > 3 */
671 nsp32_write4(base, SCSI_MSG_OUT, 0);
675 * set selection timeout(= 250ms)
677 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
680 * set SREQ hazard killer sampling rate
682 * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.
683 * check other internal clock!
685 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
690 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
694 * Don't set BM_START_ADR before setting this register.
696 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
701 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
703 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
704 "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",
705 nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
706 nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));
707 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",
708 data->msgout_len, msgout);
711 * set SGT ADDR (physical address)
713 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
716 * set TRANSFER CONTROL REG
719 command |= (TRANSFER_GO | ALL_COUNTER_CLR);
720 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
721 if (scsi_bufflen(SCpnt) > 0) {
724 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
725 command |= CB_MMIO_MODE;
726 } else if (data->trans_method & NSP32_TRANSFER_PIO) {
727 command |= CB_IO_MODE;
729 nsp32_write2(base, TRANSFER_CONTROL, command);
732 * start AUTO SCSI, kick off arbitration
734 command = (CLEAR_CDB_FIFO_POINTER |
736 AUTO_MSGIN_00_OR_04 |
739 nsp32_write2(base, COMMAND_CONTROL, command);
744 status = nsp32_arbitration(SCpnt, base);
750 nsp32_write2(base, IRQ_CONTROL, 0);
757 * Arbitration Status Check
759 * Note: Arbitration counter is waited during ARBIT_GO is not lifting.
760 * Using udelay(1) consumes CPU time and system time, but
761 * arbitration delay time is defined minimal 2.4us in SCSI
762 * specification, thus udelay works as coarse grained wait timer.
764 static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base)
771 arbit = nsp32_read1(base, ARBIT_STATUS);
773 } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
774 (time <= ARBIT_TIMEOUT_TIME));
776 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
777 "arbit: 0x%x, delay time: %d", arbit, time);
779 if (arbit & ARBIT_WIN) {
780 /* Arbitration succeeded */
781 SCpnt->result = DID_OK << 16;
782 nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */
783 } else if (arbit & ARBIT_FAIL) {
784 /* Arbitration failed */
785 SCpnt->result = DID_BUS_BUSY << 16;
789 * unknown error or ARBIT_GO timeout,
790 * something lock up! guess no connection.
792 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");
793 SCpnt->result = DID_NO_CONNECT << 16;
800 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
809 * Note: This reselection routine is called from msgin_occur,
810 * reselection target id&lun must be already set.
811 * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.
813 static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)
815 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
816 unsigned int host_id = SCpnt->device->host->this_id;
817 unsigned int base = SCpnt->device->host->io_port;
818 unsigned char tmpid, newid;
820 nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");
823 * calculate reselected SCSI ID
825 tmpid = nsp32_read1(base, RESELECT_ID);
826 tmpid &= (~BIT(host_id));
837 * If reselected New ID:LUN is not existed
838 * or current nexus is not existed, unexpected
839 * reselection is occurred. Send reject message.
841 if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) {
842 nsp32_msg(KERN_WARNING, "unknown id/lun");
844 } else if(data->lunt[newid][newlun].SCpnt == NULL) {
845 nsp32_msg(KERN_WARNING, "no SCSI command is processing");
849 data->cur_id = newid;
850 data->cur_lun = newlun;
851 data->cur_target = &(data->target[newid]);
852 data->cur_lunt = &(data->lunt[newid][newlun]);
854 /* reset SACK/SavedACK counter (or ALL clear?) */
855 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
862 * nsp32_setup_sg_table - build scatter gather list for transfer data
865 * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.
867 static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
869 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
870 struct scatterlist *sg;
871 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
876 nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");
880 num = scsi_dma_map(SCpnt);
886 scsi_for_each_sg(SCpnt, sg, num, i) {
888 * Build nsp32_sglist, substitute sg dma addresses.
890 sgt[i].addr = cpu_to_le32(sg_dma_address(sg));
891 sgt[i].len = cpu_to_le32(sg_dma_len(sg));
893 if (le32_to_cpu(sgt[i].len) > 0x10000) {
895 "can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len));
898 nsp32_dbg(NSP32_DEBUG_SGLIST,
899 "num 0x%x : addr 0x%lx len 0x%lx",
901 le32_to_cpu(sgt[i].addr),
902 le32_to_cpu(sgt[i].len ));
906 l = le32_to_cpu(sgt[num-1].len);
907 sgt[num-1].len = cpu_to_le32(l | SGTEND);
913 static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
915 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
916 nsp32_target *target;
917 nsp32_lunt *cur_lunt;
920 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
921 "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x "
922 "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",
923 SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
924 scsi_sg_count(SCpnt), scsi_sglist(SCpnt), scsi_bufflen(SCpnt));
926 if (data->CurrentSC != NULL) {
927 nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
928 data->CurrentSC = NULL;
929 SCpnt->result = DID_NO_CONNECT << 16;
934 /* check target ID is not same as this initiator ID */
935 if (scmd_id(SCpnt) == SCpnt->device->host->this_id) {
936 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???");
937 SCpnt->result = DID_BAD_TARGET << 16;
942 /* check target LUN is allowable value */
943 if (SCpnt->device->lun >= MAX_LUN) {
944 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");
945 SCpnt->result = DID_BAD_TARGET << 16;
952 SCpnt->scsi_done = done;
953 data->CurrentSC = SCpnt;
954 SCpnt->SCp.Status = CHECK_CONDITION;
955 SCpnt->SCp.Message = 0;
956 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt));
958 SCpnt->SCp.ptr = (char *)scsi_sglist(SCpnt);
959 SCpnt->SCp.this_residual = scsi_bufflen(SCpnt);
960 SCpnt->SCp.buffer = NULL;
961 SCpnt->SCp.buffers_residual = 0;
963 /* initialize data */
964 data->msgout_len = 0;
966 cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);
967 cur_lunt->SCpnt = SCpnt;
968 cur_lunt->save_datp = 0;
969 cur_lunt->msgin03 = FALSE;
970 data->cur_lunt = cur_lunt;
971 data->cur_id = SCpnt->device->id;
972 data->cur_lun = SCpnt->device->lun;
974 ret = nsp32_setup_sg_table(SCpnt);
976 nsp32_msg(KERN_ERR, "SGT fail");
977 SCpnt->result = DID_ERROR << 16;
978 nsp32_scsi_done(SCpnt);
983 nsp32_build_identify(SCpnt);
986 * If target is the first time to transfer after the reset
987 * (target don't have SDTR_DONE and SDTR_INITIATOR), sync
988 * message SDTR is needed to do synchronous transfer.
990 target = &data->target[scmd_id(SCpnt)];
991 data->cur_target = target;
993 if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {
994 unsigned char period, offset;
996 if (trans_mode != ASYNC_MODE) {
997 nsp32_set_max_sync(data, target, &period, &offset);
998 nsp32_build_sdtr(SCpnt, period, offset);
999 target->sync_flag |= SDTR_INITIATOR;
1001 nsp32_set_async(data, target);
1002 target->sync_flag |= SDTR_DONE;
1005 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1006 "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n",
1007 target->limit_entry, period, offset);
1008 } else if (target->sync_flag & SDTR_INITIATOR) {
1010 * It was negotiating SDTR with target, sending from the
1011 * initiator, but there are no chance to remove this flag.
1012 * Set async because we don't get proper negotiation.
1014 nsp32_set_async(data, target);
1015 target->sync_flag &= ~SDTR_INITIATOR;
1016 target->sync_flag |= SDTR_DONE;
1018 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1019 "SDTR_INITIATOR: fall back to async");
1020 } else if (target->sync_flag & SDTR_TARGET) {
1022 * It was negotiating SDTR with target, sending from target,
1023 * but there are no chance to remove this flag. Set async
1024 * because we don't get proper negotiation.
1026 nsp32_set_async(data, target);
1027 target->sync_flag &= ~SDTR_TARGET;
1028 target->sync_flag |= SDTR_DONE;
1030 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1031 "Unknown SDTR from target is reached, fall back to async.");
1034 nsp32_dbg(NSP32_DEBUG_TARGETFLAG,
1035 "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x",
1036 SCpnt->device->id, target->sync_flag, target->syncreg,
1040 if (auto_param == 0) {
1041 ret = nsp32_selection_autopara(SCpnt);
1043 ret = nsp32_selection_autoscsi(SCpnt);
1047 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");
1048 nsp32_scsi_done(SCpnt);
1054 /* initialize asic */
1055 static int nsp32hw_init(nsp32_hw_data *data)
1057 unsigned int base = data->BaseAddress;
1058 unsigned short irq_stat;
1059 unsigned long lc_reg;
1060 unsigned char power;
1062 lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);
1063 if ((lc_reg & 0xff00) == 0) {
1064 lc_reg |= (0x20 << 8);
1065 nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);
1068 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
1069 nsp32_write2(base, TRANSFER_CONTROL, 0);
1070 nsp32_write4(base, BM_CNT, 0);
1071 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
1074 irq_stat = nsp32_read2(base, IRQ_STATUS);
1075 nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);
1076 } while (irq_stat & IRQSTATUS_ANY_IRQ);
1079 * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is
1080 * designated by specification.
1082 if ((data->trans_method & NSP32_TRANSFER_PIO) ||
1083 (data->trans_method & NSP32_TRANSFER_MMIO)) {
1084 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);
1085 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40);
1086 } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
1087 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);
1088 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);
1090 nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode");
1093 nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x",
1094 nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT),
1095 nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT));
1097 nsp32_index_write1(base, CLOCK_DIV, data->clock);
1098 nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);
1099 nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */
1102 * initialize MISC_WRRD register
1104 * Note: Designated parameters is obeyed as following:
1105 * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set.
1106 * MISC_MASTER_TERMINATION_SELECT: It must be set.
1107 * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set.
1108 * MISC_AUTOSEL_TIMING_SEL: It should be set.
1109 * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set.
1110 * MISC_DELAYED_BMSTART: It's selected for safety.
1112 * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then
1113 * we have to set TRANSFERCONTROL_BM_START as 0 and set
1114 * appropriate value before restarting bus master transfer.
1116 nsp32_index_write2(base, MISC_WR,
1117 (SCSI_DIRECTION_DETECTOR_SELECT |
1119 MASTER_TERMINATION_SELECT |
1120 BMREQ_NEGATE_TIMING_SEL |
1121 AUTOSEL_TIMING_SEL |
1122 BMSTOP_CHANGE2_NONDATA_PHASE));
1124 nsp32_index_write1(base, TERM_PWR_CONTROL, 0);
1125 power = nsp32_index_read1(base, TERM_PWR_CONTROL);
1126 if (!(power & SENSE)) {
1127 nsp32_msg(KERN_INFO, "term power on");
1128 nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR);
1131 nsp32_write2(base, TIMER_SET, TIMER_STOP);
1132 nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */
1134 nsp32_write1(base, SYNC_REG, 0);
1135 nsp32_write1(base, ACK_WIDTH, 0);
1136 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
1139 * enable to select designated IRQ (except for
1140 * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR)
1142 nsp32_index_write2(base, IRQ_SELECT, IRQSELECT_TIMER_IRQ |
1143 IRQSELECT_SCSIRESET_IRQ |
1144 IRQSELECT_FIFO_SHLD_IRQ |
1145 IRQSELECT_RESELECT_IRQ |
1146 IRQSELECT_PHASE_CHANGE_IRQ |
1147 IRQSELECT_AUTO_SCSI_SEQ_IRQ |
1148 // IRQSELECT_BMCNTERR_IRQ |
1149 IRQSELECT_TARGET_ABORT_IRQ |
1150 IRQSELECT_MASTER_ABORT_IRQ );
1151 nsp32_write2(base, IRQ_CONTROL, 0);
1154 nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF);
1155 nsp32_index_write1(base, EXT_PORT, LED_OFF);
1161 /* interrupt routine */
1162 static irqreturn_t do_nsp32_isr(int irq, void *dev_id)
1164 nsp32_hw_data *data = dev_id;
1165 unsigned int base = data->BaseAddress;
1166 struct scsi_cmnd *SCpnt = data->CurrentSC;
1167 unsigned short auto_stat, irq_stat, trans_stat;
1168 unsigned char busmon, busphase;
1169 unsigned long flags;
1172 struct Scsi_Host *host = data->Host;
1174 spin_lock_irqsave(host->host_lock, flags);
1177 * IRQ check, then enable IRQ mask
1179 irq_stat = nsp32_read2(base, IRQ_STATUS);
1180 nsp32_dbg(NSP32_DEBUG_INTR,
1181 "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat);
1182 /* is this interrupt comes from Ninja asic? */
1183 if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) {
1184 nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat);
1188 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
1190 busmon = nsp32_read1(base, SCSI_BUS_MONITOR);
1191 busphase = busmon & BUSMON_PHASE_MASK;
1193 trans_stat = nsp32_read2(base, TRANSFER_STATUS);
1194 if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) {
1195 nsp32_msg(KERN_INFO, "card disconnect");
1196 if (data->CurrentSC != NULL) {
1197 nsp32_msg(KERN_INFO, "clean up current SCSI command");
1198 SCpnt->result = DID_BAD_TARGET << 16;
1199 nsp32_scsi_done(SCpnt);
1205 if (irq_stat & IRQSTATUS_TIMER_IRQ) {
1206 nsp32_dbg(NSP32_DEBUG_INTR, "timer stop");
1207 nsp32_write2(base, TIMER_SET, TIMER_STOP);
1212 if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) {
1213 nsp32_msg(KERN_INFO, "detected someone do bus reset");
1214 nsp32_do_bus_reset(data);
1215 if (SCpnt != NULL) {
1216 SCpnt->result = DID_RESET << 16;
1217 nsp32_scsi_done(SCpnt);
1222 if (SCpnt == NULL) {
1223 nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened");
1224 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1229 * AutoSCSI Interrupt.
1230 * Note: This interrupt is occurred when AutoSCSI is finished. Then
1231 * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are
1232 * recorded when AutoSCSI sequencer has been processed.
1234 if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) {
1235 /* getting SCSI executed phase */
1236 auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE);
1237 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
1239 /* Selection Timeout, go busfree phase. */
1240 if (auto_stat & SELECTION_TIMEOUT) {
1241 nsp32_dbg(NSP32_DEBUG_INTR,
1242 "selection timeout occurred");
1244 SCpnt->result = DID_TIME_OUT << 16;
1245 nsp32_scsi_done(SCpnt);
1249 if (auto_stat & MSGOUT_PHASE) {
1251 * MsgOut phase was processed.
1252 * If MSG_IN_OCCUER is not set, then MsgOut phase is
1253 * completed. Thus, msgout_len must reset. Otherwise,
1254 * nothing to do here. If MSG_OUT_OCCUER is occurred,
1255 * then we will encounter the condition and check.
1257 if (!(auto_stat & MSG_IN_OCCUER) &&
1258 (data->msgout_len <= 3)) {
1260 * !MSG_IN_OCCUER && msgout_len <=3
1261 * ---> AutoSCSI with MSGOUTreg is processed.
1263 data->msgout_len = 0;
1266 nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed");
1269 if ((auto_stat & DATA_IN_PHASE) &&
1270 (scsi_get_resid(SCpnt) > 0) &&
1271 ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) {
1272 printk( "auto+fifo\n");
1273 //nsp32_pio_read(SCpnt);
1276 if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) {
1277 /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */
1278 nsp32_dbg(NSP32_DEBUG_INTR,
1279 "Data in/out phase processed");
1281 /* read BMCNT, SGT pointer addr */
1282 nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx",
1283 nsp32_read4(base, BM_CNT));
1284 nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx",
1285 nsp32_read4(base, SGT_ADR));
1286 nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx",
1287 nsp32_read4(base, SACK_CNT));
1288 nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx",
1289 nsp32_read4(base, SAVED_SACK_CNT));
1291 scsi_set_resid(SCpnt, 0); /* all data transfered! */
1297 if (auto_stat & MSG_IN_OCCUER) {
1298 nsp32_msgin_occur(SCpnt, irq_stat, auto_stat);
1304 if (auto_stat & MSG_OUT_OCCUER) {
1305 nsp32_msgout_occur(SCpnt);
1311 if (auto_stat & BUS_FREE_OCCUER) {
1312 ret = nsp32_busfree_occur(SCpnt, auto_stat);
1318 if (auto_stat & STATUS_PHASE) {
1320 * Read CSB and substitute CSB for SCpnt->result
1321 * to save status phase stutas byte.
1322 * scsi error handler checks host_byte (DID_*:
1323 * low level driver to indicate status), then checks
1324 * status_byte (SCSI status byte).
1326 SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN);
1329 if (auto_stat & ILLEGAL_PHASE) {
1330 /* Illegal phase is detected. SACK is not back. */
1331 nsp32_msg(KERN_WARNING,
1332 "AUTO SCSI ILLEGAL PHASE OCCUR!!!!");
1334 /* TODO: currently we don't have any action... bus reset? */
1337 * To send back SACK, assert, wait, and negate.
1339 nsp32_sack_assert(data);
1340 nsp32_wait_req(data, NEGATE);
1341 nsp32_sack_negate(data);
1345 if (auto_stat & COMMAND_PHASE) {
1347 nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed");
1350 if (auto_stat & AUTOSCSI_BUSY) {
1351 /* AutoSCSI is running */
1354 show_autophase(auto_stat);
1358 if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) {
1359 nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ");
1362 case BUSPHASE_DATA_OUT:
1363 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write");
1365 //nsp32_pio_write(SCpnt);
1369 case BUSPHASE_DATA_IN:
1370 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read");
1372 //nsp32_pio_read(SCpnt);
1376 case BUSPHASE_STATUS:
1377 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status");
1379 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1383 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase");
1384 nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1385 show_busphase(busphase);
1392 /* Phase Change IRQ */
1393 if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) {
1394 nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ");
1397 case BUSPHASE_MESSAGE_IN:
1398 nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in");
1399 nsp32_msgin_occur(SCpnt, irq_stat, 0);
1402 nsp32_msg(KERN_WARNING, "phase chg/other phase?");
1403 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n",
1404 irq_stat, trans_stat);
1405 show_busphase(busphase);
1412 if (irq_stat & IRQSTATUS_PCI_IRQ) {
1413 nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred");
1418 if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) {
1419 nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! ");
1421 * TODO: To be implemented improving bus master
1422 * transfer reliablity when BMCNTERR is occurred in
1423 * AutoSCSI phase described in specification.
1428 nsp32_dbg(NSP32_DEBUG_INTR,
1429 "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1430 show_busphase(busphase);
1434 /* disable IRQ mask */
1435 nsp32_write2(base, IRQ_CONTROL, 0);
1438 spin_unlock_irqrestore(host->host_lock, flags);
1440 nsp32_dbg(NSP32_DEBUG_INTR, "exit");
1442 return IRQ_RETVAL(handled);
1446 #define SPRINTF(args...) \
1448 if(length > (pos - buffer)) { \
1449 pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \
1450 nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\
1454 static int nsp32_proc_info(struct Scsi_Host *host, char *buffer, char **start,
1455 off_t offset, int length, int inout)
1459 unsigned long flags;
1460 nsp32_hw_data *data;
1463 unsigned char mode_reg;
1467 /* Write is not supported, just return. */
1468 if (inout == TRUE) {
1472 hostno = host->host_no;
1473 data = (nsp32_hw_data *)host->hostdata;
1474 base = host->io_port;
1476 SPRINTF("NinjaSCSI-32 status\n\n");
1477 SPRINTF("Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version);
1478 SPRINTF("SCSI host No.: %d\n", hostno);
1479 SPRINTF("IRQ: %d\n", host->irq);
1480 SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1);
1481 SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1);
1482 SPRINTF("sg_tablesize: %d\n", host->sg_tablesize);
1483 SPRINTF("Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff);
1485 mode_reg = nsp32_index_read1(base, CHIP_MODE);
1486 model = data->pci_devid->driver_data;
1489 SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no");
1491 SPRINTF("OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]);
1493 spin_lock_irqsave(&(data->Lock), flags);
1494 SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC);
1495 spin_unlock_irqrestore(&(data->Lock), flags);
1498 SPRINTF("SDTR status\n");
1499 for (id = 0; id < ARRAY_SIZE(data->target); id++) {
1501 SPRINTF("id %d: ", id);
1503 if (id == host->this_id) {
1504 SPRINTF("----- NinjaSCSI-32 host adapter\n");
1508 if (data->target[id].sync_flag == SDTR_DONE) {
1509 if (data->target[id].period == 0 &&
1510 data->target[id].offset == ASYNC_OFFSET ) {
1519 if (data->target[id].period != 0) {
1521 speed = 1000000 / (data->target[id].period * 4);
1523 SPRINTF(" transfer %d.%dMB/s, offset %d",
1526 data->target[id].offset
1533 thislength = pos - (buffer + offset);
1535 if(thislength < 0) {
1541 thislength = min(thislength, length);
1542 *start = buffer + offset;
1551 * Reset parameters and call scsi_done for data->cur_lunt.
1552 * Be careful setting SCpnt->result = DID_* before calling this function.
1554 static void nsp32_scsi_done(struct scsi_cmnd *SCpnt)
1556 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1557 unsigned int base = SCpnt->device->host->io_port;
1559 scsi_dma_unmap(SCpnt);
1562 * clear TRANSFERCONTROL_BM_START
1564 nsp32_write2(base, TRANSFER_CONTROL, 0);
1565 nsp32_write4(base, BM_CNT, 0);
1570 (*SCpnt->scsi_done)(SCpnt);
1575 data->cur_lunt->SCpnt = NULL;
1576 data->cur_lunt = NULL;
1577 data->cur_target = NULL;
1578 data->CurrentSC = NULL;
1585 * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase
1586 * with ACK reply when below condition is matched:
1587 * MsgIn 00: Command Complete.
1588 * MsgIn 02: Save Data Pointer.
1589 * MsgIn 04: Diconnect.
1590 * In other case, unexpected BUSFREE is detected.
1592 static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph)
1594 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1595 unsigned int base = SCpnt->device->host->io_port;
1597 nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph);
1598 show_autophase(execph);
1600 nsp32_write4(base, BM_CNT, 0);
1601 nsp32_write2(base, TRANSFER_CONTROL, 0);
1604 * MsgIn 02: Save Data Pointer
1607 * Save Data Pointer is received. Adjust pointer.
1610 * SCSI-3 says if Save Data Pointer is not received, then we restart
1611 * processing and we can't adjust any SCSI data pointer in next data
1614 if (execph & MSGIN_02_VALID) {
1615 nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");
1618 * Check sack_cnt/saved_sack_cnt, then adjust sg table if
1621 if (!(execph & MSGIN_00_VALID) &&
1622 ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {
1623 unsigned int sacklen, s_sacklen;
1626 * Read SACK count and SAVEDSACK count, then compare.
1628 sacklen = nsp32_read4(base, SACK_CNT );
1629 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
1632 * If SAVEDSACKCNT == 0, it means SavedDataPointer is
1633 * come after data transfering.
1635 if (s_sacklen > 0) {
1637 * Comparing between sack and savedsack to
1638 * check the condition of AutoMsgIn03.
1640 * If they are same, set msgin03 == TRUE,
1641 * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at
1642 * reselection. On the other hand, if they
1643 * aren't same, set msgin03 == FALSE, and
1644 * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at
1647 if (sacklen != s_sacklen) {
1648 data->cur_lunt->msgin03 = FALSE;
1650 data->cur_lunt->msgin03 = TRUE;
1653 nsp32_adjust_busfree(SCpnt, s_sacklen);
1657 /* This value has not substitude with valid value yet... */
1658 //data->cur_lunt->save_datp = data->cur_datp;
1665 if (execph & MSGIN_03_VALID) {
1666 /* MsgIn03 was valid to be processed. No need processing. */
1672 if (data->cur_target->sync_flag & SDTR_INITIATOR) {
1674 * SDTR negotiation pulled by the initiator has not
1675 * finished yet. Fall back to ASYNC mode.
1677 nsp32_set_async(data, data->cur_target);
1678 data->cur_target->sync_flag &= ~SDTR_INITIATOR;
1679 data->cur_target->sync_flag |= SDTR_DONE;
1680 } else if (data->cur_target->sync_flag & SDTR_TARGET) {
1682 * SDTR negotiation pulled by the target has been
1685 if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {
1687 * If valid message is received, then
1688 * negotiation is succeeded.
1692 * On the contrary, if unexpected bus free is
1693 * occurred, then negotiation is failed. Fall
1694 * back to ASYNC mode.
1696 nsp32_set_async(data, data->cur_target);
1698 data->cur_target->sync_flag &= ~SDTR_TARGET;
1699 data->cur_target->sync_flag |= SDTR_DONE;
1703 * It is always ensured by SCSI standard that initiator
1704 * switches into Bus Free Phase after
1705 * receiving message 00 (Command Complete), 04 (Disconnect).
1706 * It's the reason that processing here is valid.
1708 if (execph & MSGIN_00_VALID) {
1709 /* MsgIn 00: Command Complete */
1710 nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");
1712 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1713 SCpnt->SCp.Message = 0;
1714 nsp32_dbg(NSP32_DEBUG_BUSFREE,
1715 "normal end stat=0x%x resid=0x%x\n",
1716 SCpnt->SCp.Status, scsi_get_resid(SCpnt));
1717 SCpnt->result = (DID_OK << 16) |
1718 (SCpnt->SCp.Message << 8) |
1719 (SCpnt->SCp.Status << 0);
1720 nsp32_scsi_done(SCpnt);
1721 /* All operation is done */
1723 } else if (execph & MSGIN_04_VALID) {
1724 /* MsgIn 04: Disconnect */
1725 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1726 SCpnt->SCp.Message = 4;
1728 nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");
1731 /* Unexpected bus free */
1732 nsp32_msg(KERN_WARNING, "unexpected bus free occurred");
1735 //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
1736 SCpnt->result = DID_ERROR << 16;
1737 nsp32_scsi_done(SCpnt);
1745 * nsp32_adjust_busfree - adjusting SG table
1747 * Note: This driver adjust the SG table using SCSI ACK
1748 * counter instead of BMCNT counter!
1750 static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen)
1752 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1753 int old_entry = data->cur_entry;
1755 int sg_num = data->cur_lunt->sg_num;
1756 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
1757 unsigned int restlen, sentlen;
1760 nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", scsi_get_resid(SCpnt));
1762 /* adjust saved SACK count with 4 byte start address boundary */
1763 s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;
1766 * calculate new_entry from sack count and each sgt[].len
1767 * calculate the byte which is intent to send
1770 for (new_entry = old_entry; new_entry < sg_num; new_entry++) {
1771 sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND);
1772 if (sentlen > s_sacklen) {
1777 /* all sgt is processed */
1778 if (new_entry == sg_num) {
1782 if (sentlen == s_sacklen) {
1783 /* XXX: confirm it's ok or not */
1784 /* In this case, it's ok because we are at
1785 the head element of the sg. restlen is correctly calculated. */
1788 /* calculate the rest length for transfering */
1789 restlen = sentlen - s_sacklen;
1791 /* update adjusting current SG table entry */
1792 len = le32_to_cpu(sgt[new_entry].len);
1793 addr = le32_to_cpu(sgt[new_entry].addr);
1794 addr += (len - restlen);
1795 sgt[new_entry].addr = cpu_to_le32(addr);
1796 sgt[new_entry].len = cpu_to_le32(restlen);
1798 /* set cur_entry with new_entry */
1799 data->cur_entry = new_entry;
1804 if (scsi_get_resid(SCpnt) < sentlen) {
1805 nsp32_msg(KERN_ERR, "resid underflow");
1808 scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) - sentlen);
1809 nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", scsi_get_resid(SCpnt));
1811 /* update hostdata and lun */
1818 * It's called MsgOut phase occur.
1819 * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in
1820 * message out phase. It, however, has more than 3 messages,
1821 * HBA creates the interrupt and we have to process by hand.
1823 static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt)
1825 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1826 unsigned int base = SCpnt->device->host->io_port;
1827 //unsigned short command;
1831 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
1832 "enter: msgout_len: 0x%x", data->msgout_len);
1835 * If MsgOut phase is occurred without having any
1836 * message, then No_Operation is sent (SCSI-2).
1838 if (data->msgout_len == 0) {
1839 nsp32_build_nop(SCpnt);
1843 * Set SGTP ADDR current entry for restarting AUTOSCSI,
1844 * because SGTP is incremented next point.
1845 * There is few statement in the specification...
1847 new_sgtp = data->cur_lunt->sglun_paddr +
1848 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
1853 for (i = 0; i < data->msgout_len; i++) {
1854 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
1855 "%d : 0x%x", i, data->msgoutbuf[i]);
1858 * Check REQ is asserted.
1860 nsp32_wait_req(data, ASSERT);
1862 if (i == (data->msgout_len - 1)) {
1864 * If the last message, set the AutoSCSI restart
1865 * before send back the ack message. AutoSCSI
1866 * restart automatically negate ATN signal.
1868 //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
1869 //nsp32_restart_autoscsi(SCpnt, command);
1870 nsp32_write2(base, COMMAND_CONTROL,
1871 (CLEAR_CDB_FIFO_POINTER |
1872 AUTO_COMMAND_PHASE |
1874 AUTO_MSGIN_00_OR_04 |
1878 * Write data with SACK, then wait sack is
1879 * automatically negated.
1881 nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);
1882 nsp32_wait_sack(data, NEGATE);
1884 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",
1885 nsp32_read1(base, SCSI_BUS_MONITOR));
1888 data->msgout_len = 0;
1890 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");
1896 * Note: Restarting AutoSCSI needs set:
1897 * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL
1899 static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command)
1901 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1902 unsigned int base = data->BaseAddress;
1903 unsigned short transfer = 0;
1905 nsp32_dbg(NSP32_DEBUG_RESTART, "enter");
1907 if (data->cur_target == NULL || data->cur_lunt == NULL) {
1908 nsp32_msg(KERN_ERR, "Target or Lun is invalid");
1913 * Don't set BM_START_ADR before setting this register.
1915 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
1920 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
1923 * set SREQ hazard killer sampling rate
1925 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
1928 * set SGT ADDR (physical address)
1930 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
1933 * set TRANSFER CONTROL REG
1936 transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
1937 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
1938 if (scsi_bufflen(SCpnt) > 0) {
1939 transfer |= BM_START;
1941 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
1942 transfer |= CB_MMIO_MODE;
1943 } else if (data->trans_method & NSP32_TRANSFER_PIO) {
1944 transfer |= CB_IO_MODE;
1946 nsp32_write2(base, TRANSFER_CONTROL, transfer);
1951 * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?
1953 command |= (CLEAR_CDB_FIFO_POINTER |
1954 AUTO_COMMAND_PHASE |
1956 nsp32_write2(base, COMMAND_CONTROL, command);
1958 nsp32_dbg(NSP32_DEBUG_RESTART, "exit");
1963 * cannot run automatically message in occur
1965 static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt,
1966 unsigned long irq_status,
1967 unsigned short execph)
1969 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1970 unsigned int base = SCpnt->device->host->io_port;
1972 unsigned char msgtype;
1973 unsigned char newlun;
1974 unsigned short command = 0;
1975 int msgclear = TRUE;
1980 * read first message
1981 * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure
1982 * of Message-In have to be processed before sending back SCSI ACK.
1984 msg = nsp32_read1(base, SCSI_DATA_IN);
1985 data->msginbuf[(unsigned char)data->msgin_len] = msg;
1986 msgtype = data->msginbuf[0];
1987 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,
1988 "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",
1989 data->msgin_len, msg, msgtype);
1992 * TODO: We need checking whether bus phase is message in?
1998 nsp32_sack_assert(data);
2001 * processing IDENTIFY
2003 if (msgtype & 0x80) {
2004 if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {
2005 /* Invalid (non reselect) phase */
2009 newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */
2010 ret = nsp32_reselection(SCpnt, newlun);
2019 * processing messages except for IDENTIFY
2021 * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.
2027 case COMMAND_COMPLETE:
2030 * These messages should not be occurred.
2031 * They should be processed on AutoSCSI sequencer.
2033 nsp32_msg(KERN_WARNING,
2034 "unexpected message of AutoSCSI MsgIn: 0x%x", msg);
2037 case RESTORE_POINTERS:
2039 * AutoMsgIn03 is disabled, and HBA gets this message.
2042 if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {
2043 unsigned int s_sacklen;
2045 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
2046 if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {
2047 nsp32_adjust_busfree(SCpnt, s_sacklen);
2049 /* No need to rewrite SGT */
2052 data->cur_lunt->msgin03 = FALSE;
2054 /* Update with the new value */
2056 /* reset SACK/SavedACK counter (or ALL clear?) */
2057 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
2060 * set new sg pointer
2062 new_sgtp = data->cur_lunt->sglun_paddr +
2063 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
2064 nsp32_write4(base, SGT_ADR, new_sgtp);
2070 * These messages should not be occurred.
2071 * They should be processed on AutoSCSI sequencer.
2073 nsp32_msg (KERN_WARNING,
2074 "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");
2078 case MESSAGE_REJECT:
2079 /* If previous message_out is sending SDTR, and get
2080 message_reject from target, SDTR negotiation is failed */
2081 if (data->cur_target->sync_flag &
2082 (SDTR_INITIATOR | SDTR_TARGET)) {
2084 * Current target is negotiating SDTR, but it's
2085 * failed. Fall back to async transfer mode, and set
2088 nsp32_set_async(data, data->cur_target);
2089 data->cur_target->sync_flag &= ~SDTR_INITIATOR;
2090 data->cur_target->sync_flag |= SDTR_DONE;
2095 case LINKED_CMD_COMPLETE:
2096 case LINKED_FLG_CMD_COMPLETE:
2097 /* queue tag is not supported currently */
2098 nsp32_msg (KERN_WARNING,
2099 "unsupported message: 0x%x", msgtype);
2102 case INITIATE_RECOVERY:
2103 /* staring ECA (Extended Contingent Allegiance) state. */
2104 /* This message is declined in SPI2 or later. */
2111 case SIMPLE_QUEUE_TAG:
2114 * 0x23: Ignore_Wide_Residue is not declared in scsi.h.
2115 * No support is needed.
2117 if (data->msgin_len >= 1) {
2121 /* current position is 1-byte of 2 byte */
2129 case EXTENDED_MESSAGE:
2130 if (data->msgin_len < 1) {
2132 * Current position does not reach 2-byte
2133 * (2-byte is extended message length).
2139 if ((data->msginbuf[1] + 1) > data->msgin_len) {
2141 * Current extended message has msginbuf[1] + 2
2142 * (msgin_len starts counting from 0, so buf[1] + 1).
2143 * If current message position is not finished,
2144 * continue receiving message.
2151 * Reach here means regular length of each type of
2152 * extended messages.
2154 switch (data->msginbuf[2]) {
2155 case EXTENDED_MODIFY_DATA_POINTER:
2157 goto reject; /* not implemented yet */
2162 * Exchange this message between initiator and target.
2164 if (data->msgin_len != EXTENDED_SDTR_LEN + 1) {
2166 * received inappropriate message.
2172 nsp32_analyze_sdtr(SCpnt);
2176 case EXTENDED_EXTENDED_IDENTIFY:
2177 /* SCSI-I only, not supported. */
2178 goto reject; /* not implemented yet */
2183 goto reject; /* not implemented yet */
2197 if (msgclear == TRUE) {
2198 data->msgin_len = 0;
2201 * If restarting AutoSCSI, but there are some message to out
2202 * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0
2203 * (MV_VALID = 0). When commandcontrol is written with
2204 * AutoSCSI restart, at the same time MsgOutOccur should be
2205 * happened (however, such situation is really possible...?).
2207 if (data->msgout_len > 0) {
2208 nsp32_write4(base, SCSI_MSG_OUT, 0);
2209 command |= AUTO_ATN;
2214 * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.
2216 command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
2219 * If current msgin03 is TRUE, then flag on.
2221 if (data->cur_lunt->msgin03 == TRUE) {
2222 command |= AUTO_MSGIN_03;
2224 data->cur_lunt->msgin03 = FALSE;
2232 nsp32_restart_autoscsi(SCpnt, command);
2235 * wait SCSI REQ negate for REQ-ACK handshake
2237 nsp32_wait_req(data, NEGATE);
2242 nsp32_sack_negate(data);
2244 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
2249 nsp32_msg(KERN_WARNING,
2250 "invalid or unsupported MessageIn, rejected. "
2251 "current msg: 0x%x (len: 0x%x), processing msg: 0x%x",
2252 msg, data->msgin_len, msgtype);
2253 nsp32_build_reject(SCpnt);
2254 data->msgin_len = 0;
2262 static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt)
2264 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2265 nsp32_target *target = data->cur_target;
2266 nsp32_sync_table *synct;
2267 unsigned char get_period = data->msginbuf[3];
2268 unsigned char get_offset = data->msginbuf[4];
2272 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");
2274 synct = data->synct;
2275 syncnum = data->syncnum;
2278 * If this inititor sent the SDTR message, then target responds SDTR,
2279 * initiator SYNCREG, ACKWIDTH from SDTR parameter.
2280 * Messages are not appropriate, then send back reject message.
2281 * If initiator did not send the SDTR, but target sends SDTR,
2282 * initiator calculator the appropriate parameter and send back SDTR.
2284 if (target->sync_flag & SDTR_INITIATOR) {
2286 * Initiator sent SDTR, the target responds and
2287 * send back negotiation SDTR.
2289 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");
2291 target->sync_flag &= ~SDTR_INITIATOR;
2292 target->sync_flag |= SDTR_DONE;
2297 if (get_offset > SYNC_OFFSET) {
2299 * Negotiation is failed, the target send back
2300 * unexpected offset value.
2305 if (get_offset == ASYNC_OFFSET) {
2307 * Negotiation is succeeded, the target want
2308 * to fall back into asynchronous transfer mode.
2315 * Check whether sync period is too short. If too short,
2316 * fall back to async mode. If it's ok, then investigate
2317 * the received sync period. If sync period is acceptable
2318 * between sync table start_period and end_period, then
2319 * set this I_T nexus as sent offset and period.
2320 * If it's not acceptable, send back reject and fall back
2323 if (get_period < data->synct[0].period_num) {
2325 * Negotiation is failed, the target send back
2326 * unexpected period value.
2331 entry = nsp32_search_period_entry(data, target, get_period);
2335 * Target want to use long period which is not
2336 * acceptable NinjaSCSI-32Bi/UDE.
2342 * Set new sync table and offset in this I_T nexus.
2344 nsp32_set_sync_entry(data, target, entry, get_offset);
2346 /* Target send SDTR to initiator. */
2347 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");
2349 target->sync_flag |= SDTR_INITIATOR;
2352 if (get_offset > SYNC_OFFSET) {
2353 /* send back as SYNC_OFFSET */
2354 get_offset = SYNC_OFFSET;
2358 if (get_period < data->synct[0].period_num) {
2359 get_period = data->synct[0].period_num;
2362 entry = nsp32_search_period_entry(data, target, get_period);
2364 if (get_offset == ASYNC_OFFSET || entry < 0) {
2365 nsp32_set_async(data, target);
2366 nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET);
2368 nsp32_set_sync_entry(data, target, entry, get_offset);
2369 nsp32_build_sdtr(SCpnt, get_period, get_offset);
2373 target->period = get_period;
2374 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
2379 * If the current message is unacceptable, send back to the target
2380 * with reject message.
2382 nsp32_build_reject(SCpnt);
2385 nsp32_set_async(data, target); /* set as ASYNC transfer mode */
2388 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");
2394 * Search config entry number matched in sync_table from given
2395 * target and speed period value. If failed to search, return negative value.
2397 static int nsp32_search_period_entry(nsp32_hw_data *data,
2398 nsp32_target *target,
2399 unsigned char period)
2403 if (target->limit_entry >= data->syncnum) {
2404 nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");
2405 target->limit_entry = 0;
2408 for (i = target->limit_entry; i < data->syncnum; i++) {
2409 if (period >= data->synct[i].start_period &&
2410 period <= data->synct[i].end_period) {
2416 * Check given period value is over the sync_table value.
2417 * If so, return max value.
2419 if (i == data->syncnum) {
2428 * target <-> initiator use ASYNC transfer
2430 static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target)
2432 unsigned char period = data->synct[target->limit_entry].period_num;
2434 target->offset = ASYNC_OFFSET;
2436 target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);
2437 target->ackwidth = 0;
2438 target->sample_reg = 0;
2440 nsp32_dbg(NSP32_DEBUG_SYNC, "set async");
2445 * target <-> initiator use maximum SYNC transfer
2447 static void nsp32_set_max_sync(nsp32_hw_data *data,
2448 nsp32_target *target,
2449 unsigned char *period,
2450 unsigned char *offset)
2452 unsigned char period_num, ackwidth;
2454 period_num = data->synct[target->limit_entry].period_num;
2455 *period = data->synct[target->limit_entry].start_period;
2456 ackwidth = data->synct[target->limit_entry].ackwidth;
2457 *offset = SYNC_OFFSET;
2459 target->syncreg = TO_SYNCREG(period_num, *offset);
2460 target->ackwidth = ackwidth;
2461 target->offset = *offset;
2462 target->sample_reg = 0; /* disable SREQ sampling */
2467 * target <-> initiator use entry number speed
2469 static void nsp32_set_sync_entry(nsp32_hw_data *data,
2470 nsp32_target *target,
2472 unsigned char offset)
2474 unsigned char period, ackwidth, sample_rate;
2476 period = data->synct[entry].period_num;
2477 ackwidth = data->synct[entry].ackwidth;
2479 sample_rate = data->synct[entry].sample_rate;
2481 target->syncreg = TO_SYNCREG(period, offset);
2482 target->ackwidth = ackwidth;
2483 target->offset = offset;
2484 target->sample_reg = sample_rate | SAMPLING_ENABLE;
2486 nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");
2491 * It waits until SCSI REQ becomes assertion or negation state.
2493 * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then
2494 * connected target responds SCSI REQ negation. We have to wait
2495 * SCSI REQ becomes negation in order to negate SCSI ACK signal for
2496 * REQ-ACK handshake.
2498 static void nsp32_wait_req(nsp32_hw_data *data, int state)
2500 unsigned int base = data->BaseAddress;
2502 unsigned char bus, req_bit;
2504 if (!((state == ASSERT) || (state == NEGATE))) {
2505 nsp32_msg(KERN_ERR, "unknown state designation");
2508 req_bit = (state == ASSERT ? BUSMON_REQ : 0);
2511 bus = nsp32_read1(base, SCSI_BUS_MONITOR);
2512 if ((bus & BUSMON_REQ) == req_bit) {
2513 nsp32_dbg(NSP32_DEBUG_WAIT,
2514 "wait_time: %d", wait_time);
2519 } while (wait_time < REQSACK_TIMEOUT_TIME);
2521 nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit);
2525 * It waits until SCSI SACK becomes assertion or negation state.
2527 static void nsp32_wait_sack(nsp32_hw_data *data, int state)
2529 unsigned int base = data->BaseAddress;
2531 unsigned char bus, ack_bit;
2533 if (!((state == ASSERT) || (state == NEGATE))) {
2534 nsp32_msg(KERN_ERR, "unknown state designation");
2537 ack_bit = (state == ASSERT ? BUSMON_ACK : 0);
2540 bus = nsp32_read1(base, SCSI_BUS_MONITOR);
2541 if ((bus & BUSMON_ACK) == ack_bit) {
2542 nsp32_dbg(NSP32_DEBUG_WAIT,
2543 "wait_time: %d", wait_time);
2548 } while (wait_time < REQSACK_TIMEOUT_TIME);
2550 nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit);
2556 * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.
2558 static void nsp32_sack_assert(nsp32_hw_data *data)
2560 unsigned int base = data->BaseAddress;
2561 unsigned char busctrl;
2563 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
2564 busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);
2565 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
2571 static void nsp32_sack_negate(nsp32_hw_data *data)
2573 unsigned int base = data->BaseAddress;
2574 unsigned char busctrl;
2576 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
2577 busctrl &= ~BUSCTL_ACK;
2578 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
2584 * Note: n_io_port is defined as 0x7f because I/O register port is
2586 * 0x800-0x8ff: memory mapped I/O port
2587 * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
2588 * 0xc00-0xfff: CardBus status registers
2590 static int nsp32_detect(struct pci_dev *pdev)
2592 struct Scsi_Host *host; /* registered host structure */
2593 struct resource *res;
2594 nsp32_hw_data *data;
2598 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
2601 * register this HBA as SCSI device
2603 host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
2605 nsp32_msg (KERN_ERR, "failed to scsi register");
2612 data = (nsp32_hw_data *)host->hostdata;
2614 memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data));
2616 host->irq = data->IrqNumber;
2617 host->io_port = data->BaseAddress;
2618 host->unique_id = data->BaseAddress;
2619 host->n_io_port = data->NumAddress;
2620 host->base = (unsigned long)data->MmioAddress;
2623 spin_lock_init(&(data->Lock));
2625 data->cur_lunt = NULL;
2626 data->cur_target = NULL;
2629 * Bus master transfer mode is supported currently.
2631 data->trans_method = NSP32_TRANSFER_BUSMASTER;
2634 * Set clock div, CLOCK_4 (HBA has own external clock, and
2635 * dividing * 100ns/4).
2636 * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.
2638 data->clock = CLOCK_4;
2641 * Select appropriate nsp32_sync_table and set I_CLOCKDIV.
2643 switch (data->clock) {
2645 /* If data->clock is CLOCK_4, then select 40M sync table. */
2646 data->synct = nsp32_sync_table_40M;
2647 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
2650 /* If data->clock is CLOCK_2, then select 20M sync table. */
2651 data->synct = nsp32_sync_table_20M;
2652 data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M);
2655 /* If data->clock is PCICLK, then select pci sync table. */
2656 data->synct = nsp32_sync_table_pci;
2657 data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci);
2660 nsp32_msg(KERN_WARNING,
2661 "Invalid clock div is selected, set CLOCK_4.");
2662 /* Use default value CLOCK_4 */
2663 data->clock = CLOCK_4;
2664 data->synct = nsp32_sync_table_40M;
2665 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
2675 if (pci_set_dma_mask(pdev, DMA_32BIT_MASK) != 0) {
2676 nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
2677 goto scsi_unregister;
2681 * allocate autoparam DMA resource.
2683 data->autoparam = pci_alloc_consistent(pdev, sizeof(nsp32_autoparam), &(data->auto_paddr));
2684 if (data->autoparam == NULL) {
2685 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
2686 goto scsi_unregister;
2690 * allocate scatter-gather DMA resource.
2692 data->sg_list = pci_alloc_consistent(pdev, NSP32_SG_TABLE_SIZE,
2694 if (data->sg_list == NULL) {
2695 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
2696 goto free_autoparam;
2699 for (i = 0; i < ARRAY_SIZE(data->lunt); i++) {
2700 for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) {
2701 int offset = i * ARRAY_SIZE(data->lunt[0]) + j;
2708 .sglun = &(data->sg_list[offset]),
2709 .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)),
2712 data->lunt[i][j] = tmp;
2719 for (i = 0; i < ARRAY_SIZE(data->target); i++) {
2720 nsp32_target *target = &(data->target[i]);
2722 target->limit_entry = 0;
2723 target->sync_flag = 0;
2724 nsp32_set_async(data, target);
2730 ret = nsp32_getprom_param(data);
2732 data->resettime = 3; /* default 3 */
2740 snprintf(data->info_str, sizeof(data->info_str),
2741 "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",
2742 host->irq, host->io_port, host->n_io_port);
2747 * Note: It's important to reset SCSI bus in initialization phase.
2748 * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when
2749 * system is coming up, so SCSI devices connected to HBA is set as
2750 * un-asynchronous mode. It brings the merit that this HBA is
2751 * ready to start synchronous transfer without any preparation,
2752 * but we are difficult to control transfer speed. In addition,
2753 * it prevents device transfer speed from effecting EEPROM start-up
2754 * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as
2755 * Auto Mode, then FAST-10M is selected when SCSI devices are
2756 * connected same or more than 4 devices. It should be avoided
2757 * depending on this specification. Thus, resetting the SCSI bus
2758 * restores all connected SCSI devices to asynchronous mode, then
2759 * this driver set SDTR safely later, and we can control all SCSI
2760 * device transfer mode.
2762 nsp32_do_bus_reset(data);
2764 ret = request_irq(host->irq, do_nsp32_isr, IRQF_SHARED, "nsp32", data);
2766 nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 "
2767 "SCSI PCI controller. Interrupt: %d", host->irq);
2774 res = request_region(host->io_port, host->n_io_port, "nsp32");
2777 "I/O region 0x%lx+0x%lx is already used",
2778 data->BaseAddress, data->NumAddress);
2782 ret = scsi_add_host(host, &pdev->dev);
2784 nsp32_msg(KERN_ERR, "failed to add scsi host");
2787 scsi_scan_host(host);
2788 pci_set_drvdata(pdev, host);
2792 release_region(host->io_port, host->n_io_port);
2795 free_irq(host->irq, data);
2798 pci_free_consistent(pdev, NSP32_SG_TABLE_SIZE,
2799 data->sg_list, data->sg_paddr);
2802 pci_free_consistent(pdev, sizeof(nsp32_autoparam),
2803 data->autoparam, data->auto_paddr);
2806 scsi_host_put(host);
2812 static int nsp32_release(struct Scsi_Host *host)
2814 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
2816 if (data->autoparam) {
2817 pci_free_consistent(data->Pci, sizeof(nsp32_autoparam),
2818 data->autoparam, data->auto_paddr);
2821 if (data->sg_list) {
2822 pci_free_consistent(data->Pci, NSP32_SG_TABLE_SIZE,
2823 data->sg_list, data->sg_paddr);
2827 free_irq(host->irq, data);
2830 if (host->io_port && host->n_io_port) {
2831 release_region(host->io_port, host->n_io_port);
2834 if (data->MmioAddress) {
2835 iounmap(data->MmioAddress);
2841 static const char *nsp32_info(struct Scsi_Host *shpnt)
2843 nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
2845 return data->info_str;
2849 /****************************************************************************
2852 static int nsp32_eh_abort(struct scsi_cmnd *SCpnt)
2854 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2855 unsigned int base = SCpnt->device->host->io_port;
2857 nsp32_msg(KERN_WARNING, "abort");
2859 if (data->cur_lunt->SCpnt == NULL) {
2860 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed");
2864 if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {
2865 /* reset SDTR negotiation */
2866 data->cur_target->sync_flag = 0;
2867 nsp32_set_async(data, data->cur_target);
2870 nsp32_write2(base, TRANSFER_CONTROL, 0);
2871 nsp32_write2(base, BM_CNT, 0);
2873 SCpnt->result = DID_ABORT << 16;
2874 nsp32_scsi_done(SCpnt);
2876 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success");
2880 static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt)
2882 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2883 unsigned int base = SCpnt->device->host->io_port;
2885 spin_lock_irq(SCpnt->device->host->host_lock);
2887 nsp32_msg(KERN_INFO, "Bus Reset");
2888 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
2890 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
2891 nsp32_do_bus_reset(data);
2892 nsp32_write2(base, IRQ_CONTROL, 0);
2894 spin_unlock_irq(SCpnt->device->host->host_lock);
2895 return SUCCESS; /* SCSI bus reset is succeeded at any time. */
2898 static void nsp32_do_bus_reset(nsp32_hw_data *data)
2900 unsigned int base = data->BaseAddress;
2901 unsigned short intrdat;
2904 nsp32_dbg(NSP32_DEBUG_BUSRESET, "in");
2908 * clear TRANSFERCONTROL_BM_START
2911 nsp32_write2(base, TRANSFER_CONTROL, 0);
2912 nsp32_write4(base, BM_CNT, 0);
2913 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
2916 * fall back to asynchronous transfer mode
2917 * initialize SDTR negotiation flag
2919 for (i = 0; i < ARRAY_SIZE(data->target); i++) {
2920 nsp32_target *target = &data->target[i];
2922 target->sync_flag = 0;
2923 nsp32_set_async(data, target);
2929 nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
2930 udelay(RESET_HOLD_TIME);
2931 nsp32_write1(base, SCSI_BUS_CONTROL, 0);
2932 for(i = 0; i < 5; i++) {
2933 intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
2934 nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);
2937 data->CurrentSC = NULL;
2940 static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt)
2942 struct Scsi_Host *host = SCpnt->device->host;
2943 unsigned int base = SCpnt->device->host->io_port;
2944 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
2946 nsp32_msg(KERN_INFO, "Host Reset");
2947 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
2949 spin_lock_irq(SCpnt->device->host->host_lock);
2952 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
2953 nsp32_do_bus_reset(data);
2954 nsp32_write2(base, IRQ_CONTROL, 0);
2956 spin_unlock_irq(SCpnt->device->host->host_lock);
2957 return SUCCESS; /* Host reset is succeeded at any time. */
2961 /**************************************************************************
2966 * getting EEPROM parameter
2968 static int nsp32_getprom_param(nsp32_hw_data *data)
2970 int vendor = data->pci_devid->vendor;
2971 int device = data->pci_devid->device;
2977 ret = nsp32_prom_read(data, 0x7e);
2979 nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret);
2982 ret = nsp32_prom_read(data, 0x7f);
2984 nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret);
2991 if (vendor == PCI_VENDOR_ID_WORKBIT &&
2992 device == PCI_DEVICE_ID_WORKBIT_STANDARD) {
2993 ret = nsp32_getprom_c16(data);
2994 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&
2995 device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) {
2996 ret = nsp32_getprom_at24(data);
2997 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&
2998 device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) {
2999 ret = nsp32_getprom_at24(data);
3001 nsp32_msg(KERN_WARNING, "Unknown EEPROM");
3005 /* for debug : SPROM data full checking */
3006 for (i = 0; i <= 0x1f; i++) {
3007 val = nsp32_prom_read(data, i);
3008 nsp32_dbg(NSP32_DEBUG_EEPROM,
3009 "rom address 0x%x : 0x%x", i, val);
3017 * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map:
3020 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
3021 * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M
3022 * 0x07 : HBA Synchronous Transfer Period
3023 * Value 0: AutoSync, 1: Manual Setting
3024 * 0x08 - 0x0f : Not Used? (0x0)
3025 * 0x10 : Bus Termination
3026 * Value 0: Auto[ON], 1: ON, 2: OFF
3027 * 0x11 : Not Used? (0)
3028 * 0x12 : Bus Reset Delay Time (0x03)
3029 * 0x13 : Bootable CD Support
3030 * Value 0: Disable, 1: Enable
3031 * 0x14 : Device Scan
3032 * Bit 7 6 5 4 3 2 1 0
3033 * | <----------------->
3034 * | SCSI ID: Value 0: Skip, 1: YES
3035 * |-> Value 0: ALL scan, Value 1: Manual
3036 * 0x15 - 0x1b : Not Used? (0)
3037 * 0x1c : Constant? (0x01) (clock div?)
3038 * 0x1d - 0x7c : Not Used (0xff)
3039 * 0x7d : Not Used? (0xff)
3040 * 0x7e : Constant (0x55), Validity signature
3041 * 0x7f : Constant (0xaa), Validity signature
3043 static int nsp32_getprom_at24(nsp32_hw_data *data)
3047 nsp32_target *target;
3051 * Reset time which is designated by EEPROM.
3053 * TODO: Not used yet.
3055 data->resettime = nsp32_prom_read(data, 0x12);
3058 * HBA Synchronous Transfer Period
3060 * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says
3061 * that if auto_sync is 0 (auto), and connected SCSI devices are
3062 * same or lower than 3, then transfer speed is set as ULTRA-20M.
3063 * On the contrary if connected SCSI devices are same or higher
3064 * than 4, then transfer speed is set as FAST-10M.
3066 * I break this rule. The number of connected SCSI devices are
3067 * only ignored. If auto_sync is 0 (auto), then transfer speed is
3068 * forced as ULTRA-20M.
3070 ret = nsp32_prom_read(data, 0x07);
3079 nsp32_msg(KERN_WARNING,
3080 "Unsupported Auto Sync mode. Fall back to manual mode.");
3084 if (trans_mode == ULTRA20M_MODE) {
3089 * each device Synchronous Transfer Period
3091 for (i = 0; i < NSP32_HOST_SCSIID; i++) {
3092 target = &data->target[i];
3093 if (auto_sync == TRUE) {
3094 target->limit_entry = 0; /* set as ULTRA20M */
3096 ret = nsp32_prom_read(data, i);
3097 entry = nsp32_search_period_entry(data, target, ret);
3099 /* search failed... set maximum speed */
3102 target->limit_entry = entry;
3111 * C16 110 (I-O Data: SC-NBD) data map:
3114 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
3115 * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC
3116 * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync)
3117 * 0x08 - 0x0f : Not Used? (0x0)
3118 * 0x10 : Transfer Mode
3119 * Value 0: PIO, 1: Busmater
3120 * 0x11 : Bus Reset Delay Time (0x00-0x20)
3121 * 0x12 : Bus Termination
3122 * Value 0: Disable, 1: Enable
3123 * 0x13 - 0x19 : Disconnection
3124 * Value 0: Disable, 1: Enable
3125 * 0x1a - 0x7c : Not Used? (0)
3126 * 0x7d : Not Used? (0xf8)
3127 * 0x7e : Constant (0x55), Validity signature
3128 * 0x7f : Constant (0xaa), Validity signature
3130 static int nsp32_getprom_c16(nsp32_hw_data *data)
3133 nsp32_target *target;
3137 * Reset time which is designated by EEPROM.
3139 * TODO: Not used yet.
3141 data->resettime = nsp32_prom_read(data, 0x11);
3144 * each device Synchronous Transfer Period
3146 for (i = 0; i < NSP32_HOST_SCSIID; i++) {
3147 target = &data->target[i];
3148 ret = nsp32_prom_read(data, i);
3150 case 0: /* 20MB/s */
3153 case 1: /* 10MB/s */
3162 default: /* default 20MB/s */
3166 entry = nsp32_search_period_entry(data, target, val);
3167 if (entry < 0 || trans_mode == ULTRA20M_MODE) {
3168 /* search failed... set maximum speed */
3171 target->limit_entry = entry;
3179 * Atmel AT24C01A (drived in 5V) serial EEPROM routines
3181 static int nsp32_prom_read(nsp32_hw_data *data, int romaddr)
3185 /* start condition */
3186 nsp32_prom_start(data);
3188 /* device address */
3189 nsp32_prom_write_bit(data, 1); /* 1 */
3190 nsp32_prom_write_bit(data, 0); /* 0 */
3191 nsp32_prom_write_bit(data, 1); /* 1 */
3192 nsp32_prom_write_bit(data, 0); /* 0 */
3193 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
3194 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
3195 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
3197 /* R/W: W for dummy write */
3198 nsp32_prom_write_bit(data, 0);
3201 nsp32_prom_write_bit(data, 0);
3204 for (i = 7; i >= 0; i--) {
3205 nsp32_prom_write_bit(data, ((romaddr >> i) & 1));
3209 nsp32_prom_write_bit(data, 0);
3211 /* start condition */
3212 nsp32_prom_start(data);
3214 /* device address */
3215 nsp32_prom_write_bit(data, 1); /* 1 */
3216 nsp32_prom_write_bit(data, 0); /* 0 */
3217 nsp32_prom_write_bit(data, 1); /* 1 */
3218 nsp32_prom_write_bit(data, 0); /* 0 */
3219 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
3220 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
3221 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
3224 nsp32_prom_write_bit(data, 1);
3227 nsp32_prom_write_bit(data, 0);
3231 for (i = 7; i >= 0; i--) {
3232 val += (nsp32_prom_read_bit(data) << i);
3236 nsp32_prom_write_bit(data, 1);
3238 /* stop condition */
3239 nsp32_prom_stop(data);
3244 static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val)
3246 int base = data->BaseAddress;
3249 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL);
3257 nsp32_index_write1(base, SERIAL_ROM_CTL, tmp);
3262 static int nsp32_prom_get(nsp32_hw_data *data, int bit)
3264 int base = data->BaseAddress;
3268 nsp32_msg(KERN_ERR, "return value is not appropriate");
3273 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;
3286 static void nsp32_prom_start (nsp32_hw_data *data)
3288 /* start condition */
3289 nsp32_prom_set(data, SCL, 1);
3290 nsp32_prom_set(data, SDA, 1);
3291 nsp32_prom_set(data, ENA, 1); /* output mode */
3292 nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting
3293 * SDA 1->0 is start condition */
3294 nsp32_prom_set(data, SCL, 0);
3297 static void nsp32_prom_stop (nsp32_hw_data *data)
3299 /* stop condition */
3300 nsp32_prom_set(data, SCL, 1);
3301 nsp32_prom_set(data, SDA, 0);
3302 nsp32_prom_set(data, ENA, 1); /* output mode */
3303 nsp32_prom_set(data, SDA, 1);
3304 nsp32_prom_set(data, SCL, 0);
3307 static void nsp32_prom_write_bit(nsp32_hw_data *data, int val)
3310 nsp32_prom_set(data, SDA, val);
3311 nsp32_prom_set(data, SCL, 1 );
3312 nsp32_prom_set(data, SCL, 0 );
3315 static int nsp32_prom_read_bit(nsp32_hw_data *data)
3320 nsp32_prom_set(data, ENA, 0); /* input mode */
3321 nsp32_prom_set(data, SCL, 1);
3323 val = nsp32_prom_get(data, SDA);
3325 nsp32_prom_set(data, SCL, 0);
3326 nsp32_prom_set(data, ENA, 1); /* output mode */
3332 /**************************************************************************
3337 /* Device suspended */
3338 static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state)
3340 struct Scsi_Host *host = pci_get_drvdata(pdev);
3342 nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host);
3344 pci_save_state (pdev);
3345 pci_disable_device (pdev);
3346 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3351 /* Device woken up */
3352 static int nsp32_resume(struct pci_dev *pdev)
3354 struct Scsi_Host *host = pci_get_drvdata(pdev);
3355 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
3358 nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host);
3360 pci_set_power_state(pdev, PCI_D0);
3361 pci_enable_wake (pdev, PCI_D0, 0);
3362 pci_restore_state (pdev);
3364 reg = nsp32_read2(data->BaseAddress, INDEX_REG);
3366 nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg);
3368 if (reg == 0xffff) {
3369 nsp32_msg(KERN_INFO, "missing device. abort resume.");
3373 nsp32hw_init (data);
3374 nsp32_do_bus_reset(data);
3376 nsp32_msg(KERN_INFO, "resume success");
3383 /************************************************************************
3384 * PCI/Cardbus probe/remove routine
3386 static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3389 nsp32_hw_data *data = &nsp32_data_base;
3391 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
3393 ret = pci_enable_device(pdev);
3395 nsp32_msg(KERN_ERR, "failed to enable pci device");
3400 data->pci_devid = id;
3401 data->IrqNumber = pdev->irq;
3402 data->BaseAddress = pci_resource_start(pdev, 0);
3403 data->NumAddress = pci_resource_len (pdev, 0);
3404 data->MmioAddress = pci_ioremap_bar(pdev, 1);
3405 data->MmioLength = pci_resource_len (pdev, 1);
3407 pci_set_master(pdev);
3409 ret = nsp32_detect(pdev);
3411 nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s",
3413 data->MmioAddress, data->MmioLength,
3415 nsp32_model[id->driver_data]);
3417 nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret);
3422 static void __devexit nsp32_remove(struct pci_dev *pdev)
3424 struct Scsi_Host *host = pci_get_drvdata(pdev);
3426 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
3428 scsi_remove_host(host);
3430 nsp32_release(host);
3432 scsi_host_put(host);
3435 static struct pci_driver nsp32_driver = {
3437 .id_table = nsp32_pci_table,
3438 .probe = nsp32_probe,
3439 .remove = __devexit_p(nsp32_remove),
3441 .suspend = nsp32_suspend,
3442 .resume = nsp32_resume,
3446 /*********************************************************************
3449 static int __init init_nsp32(void) {
3450 nsp32_msg(KERN_INFO, "loading...");
3451 return pci_register_driver(&nsp32_driver);
3454 static void __exit exit_nsp32(void) {
3455 nsp32_msg(KERN_INFO, "unloading...");
3456 pci_unregister_driver(&nsp32_driver);
3459 module_init(init_nsp32);
3460 module_exit(exit_nsp32);
projects / linux-2.6 / blob