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/sched.h>
31 #include <linux/slab.h>
32 #include <linux/string.h>
33 #include <linux/timer.h>
34 #include <linux/ioport.h>
35 #include <linux/major.h>
36 #include <linux/blkdev.h>
37 #include <linux/interrupt.h>
38 #include <linux/pci.h>
39 #include <linux/delay.h>
40 #include <linux/ctype.h>
41 #include <linux/dma-mapping.h>
44 #include <asm/system.h>
47 #include <scsi/scsi.h>
48 #include <scsi/scsi_cmnd.h>
49 #include <scsi/scsi_device.h>
50 #include <scsi/scsi_host.h>
51 #include <scsi/scsi_ioctl.h>
53 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0))
54 # include <linux/blk.h>
60 /***********************************************************************
63 static int trans_mode = 0; /* default: BIOS */
64 module_param (trans_mode, int, 0);
65 MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M");
67 #define ULTRA20M_MODE 2
69 static int auto_param = 0; /* default: ON */
70 module_param (auto_param, bool, 0);
71 MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)");
73 static int disc_priv = 1; /* default: OFF */
74 module_param (disc_priv, bool, 0);
75 MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))");
77 MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>");
78 MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module");
79 MODULE_LICENSE("GPL");
81 static const char *nsp32_release_version = "1.2";
84 /****************************************************************************
87 static struct pci_device_id nsp32_pci_table[] __devinitdata = {
89 .vendor = PCI_VENDOR_ID_IODATA,
90 .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II,
91 .subvendor = PCI_ANY_ID,
92 .subdevice = PCI_ANY_ID,
93 .driver_data = MODEL_IODATA,
96 .vendor = PCI_VENDOR_ID_WORKBIT,
97 .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME,
98 .subvendor = PCI_ANY_ID,
99 .subdevice = PCI_ANY_ID,
100 .driver_data = MODEL_KME,
103 .vendor = PCI_VENDOR_ID_WORKBIT,
104 .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT,
105 .subvendor = PCI_ANY_ID,
106 .subdevice = PCI_ANY_ID,
107 .driver_data = MODEL_WORKBIT,
110 .vendor = PCI_VENDOR_ID_WORKBIT,
111 .device = PCI_DEVICE_ID_WORKBIT_STANDARD,
112 .subvendor = PCI_ANY_ID,
113 .subdevice = PCI_ANY_ID,
114 .driver_data = MODEL_PCI_WORKBIT,
117 .vendor = PCI_VENDOR_ID_WORKBIT,
118 .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC,
119 .subvendor = PCI_ANY_ID,
120 .subdevice = PCI_ANY_ID,
121 .driver_data = MODEL_LOGITEC,
124 .vendor = PCI_VENDOR_ID_WORKBIT,
125 .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC,
126 .subvendor = PCI_ANY_ID,
127 .subdevice = PCI_ANY_ID,
128 .driver_data = MODEL_PCI_LOGITEC,
131 .vendor = PCI_VENDOR_ID_WORKBIT,
132 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO,
133 .subvendor = PCI_ANY_ID,
134 .subdevice = PCI_ANY_ID,
135 .driver_data = MODEL_PCI_MELCO,
138 .vendor = PCI_VENDOR_ID_WORKBIT,
139 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II,
140 .subvendor = PCI_ANY_ID,
141 .subdevice = PCI_ANY_ID,
142 .driver_data = MODEL_PCI_MELCO,
146 MODULE_DEVICE_TABLE(pci, nsp32_pci_table);
148 static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */
152 * Period/AckWidth speed conversion table
154 * Note: This period/ackwidth speed table must be in descending order.
156 static nsp32_sync_table nsp32_sync_table_40M[] = {
157 /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */
158 {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */
159 {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */
160 {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
161 {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */
162 {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */
163 {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */
164 {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
165 {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */
166 {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
169 static nsp32_sync_table nsp32_sync_table_20M[] = {
170 {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */
171 {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */
172 {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */
173 {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */
174 {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */
175 {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */
176 {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */
177 {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */
178 {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */
181 static nsp32_sync_table nsp32_sync_table_pci[] = {
182 {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */
183 {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */
184 {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */
185 {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */
186 {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */
187 {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */
188 {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */
189 {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */
190 {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */
194 * function declaration
196 /* module entry point */
197 static int __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *);
198 static void __devexit nsp32_remove(struct pci_dev *);
199 static int __init init_nsp32 (void);
200 static void __exit exit_nsp32 (void);
202 /* struct struct scsi_host_template */
203 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
204 static int nsp32_proc_info (struct Scsi_Host *, char *, char **, off_t, int, int);
206 static int nsp32_proc_info (char *, char **, off_t, int, int, int);
209 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
210 static int nsp32_detect (struct pci_dev *pdev);
212 static int nsp32_detect (struct scsi_host_template *);
214 static int nsp32_queuecommand(struct scsi_cmnd *,
215 void (*done)(struct scsi_cmnd *));
216 static const char *nsp32_info (struct Scsi_Host *);
217 static int nsp32_release (struct Scsi_Host *);
219 /* SCSI error handler */
220 static int nsp32_eh_abort (struct scsi_cmnd *);
221 static int nsp32_eh_bus_reset (struct scsi_cmnd *);
222 static int nsp32_eh_host_reset(struct scsi_cmnd *);
224 /* generate SCSI message */
225 static void nsp32_build_identify(struct scsi_cmnd *);
226 static void nsp32_build_nop (struct scsi_cmnd *);
227 static void nsp32_build_reject (struct scsi_cmnd *);
228 static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, unsigned char);
230 /* SCSI message handler */
231 static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short);
232 static void nsp32_msgout_occur (struct scsi_cmnd *);
233 static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, unsigned short);
235 static int nsp32_setup_sg_table (struct scsi_cmnd *);
236 static int nsp32_selection_autopara(struct scsi_cmnd *);
237 static int nsp32_selection_autoscsi(struct scsi_cmnd *);
238 static void nsp32_scsi_done (struct scsi_cmnd *);
239 static int nsp32_arbitration (struct scsi_cmnd *, unsigned int);
240 static int nsp32_reselection (struct scsi_cmnd *, unsigned char);
241 static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int);
242 static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short);
245 static void nsp32_analyze_sdtr (struct scsi_cmnd *);
246 static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char);
247 static void nsp32_set_async (nsp32_hw_data *, nsp32_target *);
248 static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *);
249 static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char);
251 /* SCSI bus status handler */
252 static void nsp32_wait_req (nsp32_hw_data *, int);
253 static void nsp32_wait_sack (nsp32_hw_data *, int);
254 static void nsp32_sack_assert (nsp32_hw_data *);
255 static void nsp32_sack_negate (nsp32_hw_data *);
256 static void nsp32_do_bus_reset(nsp32_hw_data *);
258 /* hardware interrupt handler */
259 static irqreturn_t do_nsp32_isr(int, void *, struct pt_regs *);
261 /* initialize hardware */
262 static int nsp32hw_init(nsp32_hw_data *);
265 static int nsp32_getprom_param (nsp32_hw_data *);
266 static int nsp32_getprom_at24 (nsp32_hw_data *);
267 static int nsp32_getprom_c16 (nsp32_hw_data *);
268 static void nsp32_prom_start (nsp32_hw_data *);
269 static void nsp32_prom_stop (nsp32_hw_data *);
270 static int nsp32_prom_read (nsp32_hw_data *, int);
271 static int nsp32_prom_read_bit (nsp32_hw_data *);
272 static void nsp32_prom_write_bit(nsp32_hw_data *, int);
273 static void nsp32_prom_set (nsp32_hw_data *, int, int);
274 static int nsp32_prom_get (nsp32_hw_data *, int);
276 /* debug/warning/info message */
277 static void nsp32_message (const char *, int, char *, char *, ...);
279 static void nsp32_dmessage(const char *, int, int, char *, ...);
283 * max_sectors is currently limited up to 128.
285 static struct scsi_host_template nsp32_template = {
286 .proc_name = "nsp32",
287 .name = "Workbit NinjaSCSI-32Bi/UDE",
288 .proc_info = nsp32_proc_info,
290 .queuecommand = nsp32_queuecommand,
292 .sg_tablesize = NSP32_SG_SIZE,
295 .this_id = NSP32_HOST_SCSIID,
296 .use_clustering = DISABLE_CLUSTERING,
297 .eh_abort_handler = nsp32_eh_abort,
298 .eh_bus_reset_handler = nsp32_eh_bus_reset,
299 .eh_host_reset_handler = nsp32_eh_host_reset,
300 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,74))
301 .detect = nsp32_detect,
302 .release = nsp32_release,
304 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,2))
305 .use_new_eh_code = 1,
307 /* .highmem_io = 1, */
311 #include "nsp32_io.h"
313 /***********************************************************************
317 # define NSP32_DEBUG_MASK 0x000000
318 # define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args)
319 # define nsp32_dbg(mask, args...) /* */
321 # define NSP32_DEBUG_MASK 0xffffff
322 # define nsp32_msg(type, args...) \
323 nsp32_message (__FUNCTION__, __LINE__, (type), args)
324 # define nsp32_dbg(mask, args...) \
325 nsp32_dmessage(__FUNCTION__, __LINE__, (mask), args)
328 #define NSP32_DEBUG_QUEUECOMMAND BIT(0)
329 #define NSP32_DEBUG_REGISTER BIT(1)
330 #define NSP32_DEBUG_AUTOSCSI BIT(2)
331 #define NSP32_DEBUG_INTR BIT(3)
332 #define NSP32_DEBUG_SGLIST BIT(4)
333 #define NSP32_DEBUG_BUSFREE BIT(5)
334 #define NSP32_DEBUG_CDB_CONTENTS BIT(6)
335 #define NSP32_DEBUG_RESELECTION BIT(7)
336 #define NSP32_DEBUG_MSGINOCCUR BIT(8)
337 #define NSP32_DEBUG_EEPROM BIT(9)
338 #define NSP32_DEBUG_MSGOUTOCCUR BIT(10)
339 #define NSP32_DEBUG_BUSRESET BIT(11)
340 #define NSP32_DEBUG_RESTART BIT(12)
341 #define NSP32_DEBUG_SYNC BIT(13)
342 #define NSP32_DEBUG_WAIT BIT(14)
343 #define NSP32_DEBUG_TARGETFLAG BIT(15)
344 #define NSP32_DEBUG_PROC BIT(16)
345 #define NSP32_DEBUG_INIT BIT(17)
346 #define NSP32_SPECIAL_PRINT_REGISTER BIT(20)
348 #define NSP32_DEBUG_BUF_LEN 100
350 static void nsp32_message(const char *func, int line, char *type, char *fmt, ...)
353 char buf[NSP32_DEBUG_BUF_LEN];
356 vsnprintf(buf, sizeof(buf), fmt, args);
360 printk("%snsp32: %s\n", type, buf);
362 printk("%snsp32: %s (%d): %s\n", type, func, line, buf);
367 static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...)
370 char buf[NSP32_DEBUG_BUF_LEN];
373 vsnprintf(buf, sizeof(buf), fmt, args);
376 if (mask & NSP32_DEBUG_MASK) {
377 printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf);
383 # include "nsp32_debug.c"
385 # define show_command(arg) /* */
386 # define show_busphase(arg) /* */
387 # define show_autophase(arg) /* */
393 static void nsp32_build_identify(struct scsi_cmnd *SCpnt)
395 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
396 int pos = data->msgout_len;
399 /* XXX: Auto DiscPriv detection is progressing... */
400 if (disc_priv == 0) {
404 data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++;
406 data->msgout_len = pos;
410 * SDTR Message Routine
412 static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt,
413 unsigned char period,
414 unsigned char offset)
416 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
417 int pos = data->msgout_len;
419 data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++;
420 data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++;
421 data->msgoutbuf[pos] = EXTENDED_SDTR; pos++;
422 data->msgoutbuf[pos] = period; pos++;
423 data->msgoutbuf[pos] = offset; pos++;
425 data->msgout_len = pos;
429 * No Operation Message
431 static void nsp32_build_nop(struct scsi_cmnd *SCpnt)
433 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
434 int pos = data->msgout_len;
437 nsp32_msg(KERN_WARNING,
438 "Some messages are already contained!");
442 data->msgoutbuf[pos] = NOP; pos++;
443 data->msgout_len = pos;
449 static void nsp32_build_reject(struct scsi_cmnd *SCpnt)
451 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
452 int pos = data->msgout_len;
454 data->msgoutbuf[pos] = MESSAGE_REJECT; pos++;
455 data->msgout_len = pos;
462 static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time)
464 unsigned int base = SCpnt->host->io_port;
466 nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time);
468 if (time & (~TIMER_CNT_MASK)) {
469 nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow");
472 nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK);
478 * set SCSI command and other parameter to asic, and start selection phase
480 static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt)
482 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
483 unsigned int base = SCpnt->device->host->io_port;
484 unsigned int host_id = SCpnt->device->host->this_id;
485 unsigned char target = scmd_id(SCpnt);
486 nsp32_autoparam *param = data->autoparam;
492 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
497 phase = nsp32_read1(base, SCSI_BUS_MONITOR);
498 if (phase != BUSMON_BUS_FREE) {
499 nsp32_msg(KERN_WARNING, "bus busy");
500 show_busphase(phase & BUSMON_PHASE_MASK);
501 SCpnt->result = DID_BUS_BUSY << 16;
508 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
509 * over 3 messages needs another routine.
511 if (data->msgout_len == 0) {
512 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
513 SCpnt->result = DID_ERROR << 16;
515 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
517 for (i = 0; i < data->msgout_len; i++) {
519 * the sending order of the message is:
520 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2
521 * MCNT 2: MSG#1 -> MSG#2
525 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
527 msgout |= MV_VALID; /* MV valid */
528 msgout |= (unsigned int)data->msgout_len; /* len */
530 /* data->msgout_len > 3 */
534 // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT));
535 // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
538 * setup asic parameter
540 memset(param, 0, sizeof(nsp32_autoparam));
543 for (i = 0; i < SCpnt->cmd_len; i++) {
544 param->cdb[4 * i] = SCpnt->cmnd[i];
547 /* outgoing messages */
548 param->msgout = cpu_to_le32(msgout);
550 /* syncreg, ackwidth, target id, SREQ sampling rate */
551 param->syncreg = data->cur_target->syncreg;
552 param->ackwidth = data->cur_target->ackwidth;
553 param->target_id = BIT(host_id) | BIT(target);
554 param->sample_reg = data->cur_target->sample_reg;
556 // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg);
558 /* command control */
559 param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER |
561 AUTO_MSGIN_00_OR_04 |
566 /* transfer control */
568 switch (data->trans_method) {
569 case NSP32_TRANSFER_BUSMASTER:
572 case NSP32_TRANSFER_MMIO:
575 case NSP32_TRANSFER_PIO:
579 nsp32_msg(KERN_ERR, "unknown trans_method");
583 * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits.
584 * For bus master transfer, it's taken off.
586 s |= (TRANSFER_GO | ALL_COUNTER_CLR);
587 param->transfer_control = cpu_to_le16(s);
590 param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr);
593 * transfer parameter to ASIC
595 nsp32_write4(base, SGT_ADR, data->auto_paddr);
596 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER |
602 ret = nsp32_arbitration(SCpnt, base);
609 * Selection with AUTO SCSI (without AUTO PARAMETER)
611 static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt)
613 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
614 unsigned int base = SCpnt->device->host->io_port;
615 unsigned int host_id = SCpnt->device->host->this_id;
616 unsigned char target = scmd_id(SCpnt);
619 unsigned short command = 0;
620 unsigned int msgout = 0;
621 unsigned short execph;
624 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in");
629 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
634 phase = nsp32_read1(base, SCSI_BUS_MONITOR);
635 if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
636 nsp32_msg(KERN_WARNING, "bus busy");
637 SCpnt->result = DID_BUS_BUSY << 16;
645 execph = nsp32_read2(base, SCSI_EXECUTE_PHASE);
648 * clear FIFO counter to set CDBs
650 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER);
655 for (i = 0; i < SCpnt->cmd_len; i++) {
656 nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]);
658 nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]);
661 * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID
663 nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target));
666 * set SCSI MSGOUT REG
668 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout.
669 * over 3 messages needs another routine.
671 if (data->msgout_len == 0) {
672 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!");
673 SCpnt->result = DID_ERROR << 16;
676 } else if (data->msgout_len > 0 && data->msgout_len <= 3) {
678 for (i = 0; i < data->msgout_len; i++) {
680 * the sending order of the message is:
681 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2
682 * MCNT 2: MSG#1 -> MSG#2
686 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24);
688 msgout |= MV_VALID; /* MV valid */
689 msgout |= (unsigned int)data->msgout_len; /* len */
690 nsp32_write4(base, SCSI_MSG_OUT, msgout);
692 /* data->msgout_len > 3 */
693 nsp32_write4(base, SCSI_MSG_OUT, 0);
697 * set selection timeout(= 250ms)
699 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
702 * set SREQ hazard killer sampling rate
704 * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz.
705 * check other internal clock!
707 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
712 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
716 * Don't set BM_START_ADR before setting this register.
718 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
723 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
725 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
726 "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x",
727 nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH),
728 nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID));
729 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x",
730 data->msgout_len, msgout);
733 * set SGT ADDR (physical address)
735 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
738 * set TRANSFER CONTROL REG
741 command |= (TRANSFER_GO | ALL_COUNTER_CLR);
742 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
743 if (SCpnt->request_bufflen > 0) {
746 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
747 command |= CB_MMIO_MODE;
748 } else if (data->trans_method & NSP32_TRANSFER_PIO) {
749 command |= CB_IO_MODE;
751 nsp32_write2(base, TRANSFER_CONTROL, command);
754 * start AUTO SCSI, kick off arbitration
756 command = (CLEAR_CDB_FIFO_POINTER |
758 AUTO_MSGIN_00_OR_04 |
761 nsp32_write2(base, COMMAND_CONTROL, command);
766 status = nsp32_arbitration(SCpnt, base);
772 nsp32_write2(base, IRQ_CONTROL, 0);
779 * Arbitration Status Check
781 * Note: Arbitration counter is waited during ARBIT_GO is not lifting.
782 * Using udelay(1) consumes CPU time and system time, but
783 * arbitration delay time is defined minimal 2.4us in SCSI
784 * specification, thus udelay works as coarse grained wait timer.
786 static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base)
793 arbit = nsp32_read1(base, ARBIT_STATUS);
795 } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 &&
796 (time <= ARBIT_TIMEOUT_TIME));
798 nsp32_dbg(NSP32_DEBUG_AUTOSCSI,
799 "arbit: 0x%x, delay time: %d", arbit, time);
801 if (arbit & ARBIT_WIN) {
802 /* Arbitration succeeded */
803 SCpnt->result = DID_OK << 16;
804 nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */
805 } else if (arbit & ARBIT_FAIL) {
806 /* Arbitration failed */
807 SCpnt->result = DID_BUS_BUSY << 16;
811 * unknown error or ARBIT_GO timeout,
812 * something lock up! guess no connection.
814 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout");
815 SCpnt->result = DID_NO_CONNECT << 16;
822 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR);
831 * Note: This reselection routine is called from msgin_occur,
832 * reselection target id&lun must be already set.
833 * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation.
835 static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun)
837 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
838 unsigned int host_id = SCpnt->device->host->this_id;
839 unsigned int base = SCpnt->device->host->io_port;
840 unsigned char tmpid, newid;
842 nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter");
845 * calculate reselected SCSI ID
847 tmpid = nsp32_read1(base, RESELECT_ID);
848 tmpid &= (~BIT(host_id));
859 * If reselected New ID:LUN is not existed
860 * or current nexus is not existed, unexpected
861 * reselection is occurred. Send reject message.
863 if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) {
864 nsp32_msg(KERN_WARNING, "unknown id/lun");
866 } else if(data->lunt[newid][newlun].SCpnt == NULL) {
867 nsp32_msg(KERN_WARNING, "no SCSI command is processing");
871 data->cur_id = newid;
872 data->cur_lun = newlun;
873 data->cur_target = &(data->target[newid]);
874 data->cur_lunt = &(data->lunt[newid][newlun]);
876 /* reset SACK/SavedACK counter (or ALL clear?) */
877 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
884 * nsp32_setup_sg_table - build scatter gather list for transfer data
887 * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time.
889 static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt)
891 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
892 struct scatterlist *sgl;
893 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
897 if (SCpnt->request_bufflen == 0) {
902 nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null");
907 sgl = (struct scatterlist *)SCpnt->request_buffer;
908 num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg,
909 SCpnt->sc_data_direction);
910 for (i = 0; i < num; i++) {
912 * Build nsp32_sglist, substitute sg dma addresses.
914 sgt[i].addr = cpu_to_le32(sg_dma_address(sgl));
915 sgt[i].len = cpu_to_le32(sg_dma_len(sgl));
918 if (le32_to_cpu(sgt[i].len) > 0x10000) {
920 "can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len));
923 nsp32_dbg(NSP32_DEBUG_SGLIST,
924 "num 0x%x : addr 0x%lx len 0x%lx",
926 le32_to_cpu(sgt[i].addr),
927 le32_to_cpu(sgt[i].len ));
931 l = le32_to_cpu(sgt[num-1].len);
932 sgt[num-1].len = cpu_to_le32(l | SGTEND);
935 SCpnt->SCp.have_data_in = pci_map_single(data->Pci,
936 SCpnt->request_buffer, SCpnt->request_bufflen,
937 SCpnt->sc_data_direction);
939 sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in);
940 sgt[0].len = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */
942 if (SCpnt->request_bufflen > 0x10000) {
944 "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen);
947 nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx",
948 le32_to_cpu(sgt[0].addr),
949 le32_to_cpu(sgt[0].len ));
955 static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
957 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
958 nsp32_target *target;
959 nsp32_lunt *cur_lunt;
962 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
963 "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x "
964 "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x",
965 SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len,
966 SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen);
968 if (data->CurrentSC != NULL) {
969 nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request");
970 data->CurrentSC = NULL;
971 SCpnt->result = DID_NO_CONNECT << 16;
976 /* check target ID is not same as this initiator ID */
977 if (scmd_id(SCpnt) == SCpnt->device->host->this_id) {
978 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???");
979 SCpnt->result = DID_BAD_TARGET << 16;
984 /* check target LUN is allowable value */
985 if (SCpnt->device->lun >= MAX_LUN) {
986 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun");
987 SCpnt->result = DID_BAD_TARGET << 16;
994 SCpnt->scsi_done = done;
995 data->CurrentSC = SCpnt;
996 SCpnt->SCp.Status = CHECK_CONDITION;
997 SCpnt->SCp.Message = 0;
998 SCpnt->resid = SCpnt->request_bufflen;
1000 SCpnt->SCp.ptr = (char *) SCpnt->request_buffer;
1001 SCpnt->SCp.this_residual = SCpnt->request_bufflen;
1002 SCpnt->SCp.buffer = NULL;
1003 SCpnt->SCp.buffers_residual = 0;
1005 /* initialize data */
1006 data->msgout_len = 0;
1007 data->msgin_len = 0;
1008 cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]);
1009 cur_lunt->SCpnt = SCpnt;
1010 cur_lunt->save_datp = 0;
1011 cur_lunt->msgin03 = FALSE;
1012 data->cur_lunt = cur_lunt;
1013 data->cur_id = SCpnt->device->id;
1014 data->cur_lun = SCpnt->device->lun;
1016 ret = nsp32_setup_sg_table(SCpnt);
1018 nsp32_msg(KERN_ERR, "SGT fail");
1019 SCpnt->result = DID_ERROR << 16;
1020 nsp32_scsi_done(SCpnt);
1024 /* Build IDENTIFY */
1025 nsp32_build_identify(SCpnt);
1028 * If target is the first time to transfer after the reset
1029 * (target don't have SDTR_DONE and SDTR_INITIATOR), sync
1030 * message SDTR is needed to do synchronous transfer.
1032 target = &data->target[scmd_id(SCpnt)];
1033 data->cur_target = target;
1035 if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) {
1036 unsigned char period, offset;
1038 if (trans_mode != ASYNC_MODE) {
1039 nsp32_set_max_sync(data, target, &period, &offset);
1040 nsp32_build_sdtr(SCpnt, period, offset);
1041 target->sync_flag |= SDTR_INITIATOR;
1043 nsp32_set_async(data, target);
1044 target->sync_flag |= SDTR_DONE;
1047 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1048 "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n",
1049 target->limit_entry, period, offset);
1050 } else if (target->sync_flag & SDTR_INITIATOR) {
1052 * It was negotiating SDTR with target, sending from the
1053 * initiator, but there are no chance to remove this flag.
1054 * Set async because we don't get proper negotiation.
1056 nsp32_set_async(data, target);
1057 target->sync_flag &= ~SDTR_INITIATOR;
1058 target->sync_flag |= SDTR_DONE;
1060 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1061 "SDTR_INITIATOR: fall back to async");
1062 } else if (target->sync_flag & SDTR_TARGET) {
1064 * It was negotiating SDTR with target, sending from target,
1065 * but there are no chance to remove this flag. Set async
1066 * because we don't get proper negotiation.
1068 nsp32_set_async(data, target);
1069 target->sync_flag &= ~SDTR_TARGET;
1070 target->sync_flag |= SDTR_DONE;
1072 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND,
1073 "Unknown SDTR from target is reached, fall back to async.");
1076 nsp32_dbg(NSP32_DEBUG_TARGETFLAG,
1077 "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x",
1078 SCpnt->device->id, target->sync_flag, target->syncreg,
1082 if (auto_param == 0) {
1083 ret = nsp32_selection_autopara(SCpnt);
1085 ret = nsp32_selection_autoscsi(SCpnt);
1089 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail");
1090 nsp32_scsi_done(SCpnt);
1096 /* initialize asic */
1097 static int nsp32hw_init(nsp32_hw_data *data)
1099 unsigned int base = data->BaseAddress;
1100 unsigned short irq_stat;
1101 unsigned long lc_reg;
1102 unsigned char power;
1104 lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE);
1105 if ((lc_reg & 0xff00) == 0) {
1106 lc_reg |= (0x20 << 8);
1107 nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff);
1110 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
1111 nsp32_write2(base, TRANSFER_CONTROL, 0);
1112 nsp32_write4(base, BM_CNT, 0);
1113 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
1116 irq_stat = nsp32_read2(base, IRQ_STATUS);
1117 nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat);
1118 } while (irq_stat & IRQSTATUS_ANY_IRQ);
1121 * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is
1122 * designated by specification.
1124 if ((data->trans_method & NSP32_TRANSFER_PIO) ||
1125 (data->trans_method & NSP32_TRANSFER_MMIO)) {
1126 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40);
1127 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40);
1128 } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
1129 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10);
1130 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60);
1132 nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode");
1135 nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x",
1136 nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT),
1137 nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT));
1139 nsp32_index_write1(base, CLOCK_DIV, data->clock);
1140 nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD);
1141 nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */
1144 * initialize MISC_WRRD register
1146 * Note: Designated parameters is obeyed as following:
1147 * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set.
1148 * MISC_MASTER_TERMINATION_SELECT: It must be set.
1149 * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set.
1150 * MISC_AUTOSEL_TIMING_SEL: It should be set.
1151 * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set.
1152 * MISC_DELAYED_BMSTART: It's selected for safety.
1154 * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then
1155 * we have to set TRANSFERCONTROL_BM_START as 0 and set
1156 * appropriate value before restarting bus master transfer.
1158 nsp32_index_write2(base, MISC_WR,
1159 (SCSI_DIRECTION_DETECTOR_SELECT |
1161 MASTER_TERMINATION_SELECT |
1162 BMREQ_NEGATE_TIMING_SEL |
1163 AUTOSEL_TIMING_SEL |
1164 BMSTOP_CHANGE2_NONDATA_PHASE));
1166 nsp32_index_write1(base, TERM_PWR_CONTROL, 0);
1167 power = nsp32_index_read1(base, TERM_PWR_CONTROL);
1168 if (!(power & SENSE)) {
1169 nsp32_msg(KERN_INFO, "term power on");
1170 nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR);
1173 nsp32_write2(base, TIMER_SET, TIMER_STOP);
1174 nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */
1176 nsp32_write1(base, SYNC_REG, 0);
1177 nsp32_write1(base, ACK_WIDTH, 0);
1178 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME);
1181 * enable to select designated IRQ (except for
1182 * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR)
1184 nsp32_index_write2(base, IRQ_SELECT, IRQSELECT_TIMER_IRQ |
1185 IRQSELECT_SCSIRESET_IRQ |
1186 IRQSELECT_FIFO_SHLD_IRQ |
1187 IRQSELECT_RESELECT_IRQ |
1188 IRQSELECT_PHASE_CHANGE_IRQ |
1189 IRQSELECT_AUTO_SCSI_SEQ_IRQ |
1190 // IRQSELECT_BMCNTERR_IRQ |
1191 IRQSELECT_TARGET_ABORT_IRQ |
1192 IRQSELECT_MASTER_ABORT_IRQ );
1193 nsp32_write2(base, IRQ_CONTROL, 0);
1196 nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF);
1197 nsp32_index_write1(base, EXT_PORT, LED_OFF);
1203 /* interrupt routine */
1204 static irqreturn_t do_nsp32_isr(int irq, void *dev_id, struct pt_regs *regs)
1206 nsp32_hw_data *data = dev_id;
1207 unsigned int base = data->BaseAddress;
1208 struct scsi_cmnd *SCpnt = data->CurrentSC;
1209 unsigned short auto_stat, irq_stat, trans_stat;
1210 unsigned char busmon, busphase;
1211 unsigned long flags;
1215 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1216 struct Scsi_Host *host = data->Host;
1217 spin_lock_irqsave(host->host_lock, flags);
1219 spin_lock_irqsave(&io_request_lock, flags);
1223 * IRQ check, then enable IRQ mask
1225 irq_stat = nsp32_read2(base, IRQ_STATUS);
1226 nsp32_dbg(NSP32_DEBUG_INTR,
1227 "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat);
1228 /* is this interrupt comes from Ninja asic? */
1229 if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) {
1230 nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat);
1234 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
1236 busmon = nsp32_read1(base, SCSI_BUS_MONITOR);
1237 busphase = busmon & BUSMON_PHASE_MASK;
1239 trans_stat = nsp32_read2(base, TRANSFER_STATUS);
1240 if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) {
1241 nsp32_msg(KERN_INFO, "card disconnect");
1242 if (data->CurrentSC != NULL) {
1243 nsp32_msg(KERN_INFO, "clean up current SCSI command");
1244 SCpnt->result = DID_BAD_TARGET << 16;
1245 nsp32_scsi_done(SCpnt);
1251 if (irq_stat & IRQSTATUS_TIMER_IRQ) {
1252 nsp32_dbg(NSP32_DEBUG_INTR, "timer stop");
1253 nsp32_write2(base, TIMER_SET, TIMER_STOP);
1258 if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) {
1259 nsp32_msg(KERN_INFO, "detected someone do bus reset");
1260 nsp32_do_bus_reset(data);
1261 if (SCpnt != NULL) {
1262 SCpnt->result = DID_RESET << 16;
1263 nsp32_scsi_done(SCpnt);
1268 if (SCpnt == NULL) {
1269 nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened");
1270 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1275 * AutoSCSI Interrupt.
1276 * Note: This interrupt is occurred when AutoSCSI is finished. Then
1277 * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are
1278 * recorded when AutoSCSI sequencer has been processed.
1280 if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) {
1281 /* getting SCSI executed phase */
1282 auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE);
1283 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0);
1285 /* Selection Timeout, go busfree phase. */
1286 if (auto_stat & SELECTION_TIMEOUT) {
1287 nsp32_dbg(NSP32_DEBUG_INTR,
1288 "selection timeout occurred");
1290 SCpnt->result = DID_TIME_OUT << 16;
1291 nsp32_scsi_done(SCpnt);
1295 if (auto_stat & MSGOUT_PHASE) {
1297 * MsgOut phase was processed.
1298 * If MSG_IN_OCCUER is not set, then MsgOut phase is
1299 * completed. Thus, msgout_len must reset. Otherwise,
1300 * nothing to do here. If MSG_OUT_OCCUER is occurred,
1301 * then we will encounter the condition and check.
1303 if (!(auto_stat & MSG_IN_OCCUER) &&
1304 (data->msgout_len <= 3)) {
1306 * !MSG_IN_OCCUER && msgout_len <=3
1307 * ---> AutoSCSI with MSGOUTreg is processed.
1309 data->msgout_len = 0;
1312 nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed");
1315 if ((auto_stat & DATA_IN_PHASE) &&
1316 (SCpnt->resid > 0) &&
1317 ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) {
1318 printk( "auto+fifo\n");
1319 //nsp32_pio_read(SCpnt);
1322 if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) {
1323 /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */
1324 nsp32_dbg(NSP32_DEBUG_INTR,
1325 "Data in/out phase processed");
1327 /* read BMCNT, SGT pointer addr */
1328 nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx",
1329 nsp32_read4(base, BM_CNT));
1330 nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx",
1331 nsp32_read4(base, SGT_ADR));
1332 nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx",
1333 nsp32_read4(base, SACK_CNT));
1334 nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx",
1335 nsp32_read4(base, SAVED_SACK_CNT));
1337 SCpnt->resid = 0; /* all data transfered! */
1343 if (auto_stat & MSG_IN_OCCUER) {
1344 nsp32_msgin_occur(SCpnt, irq_stat, auto_stat);
1350 if (auto_stat & MSG_OUT_OCCUER) {
1351 nsp32_msgout_occur(SCpnt);
1357 if (auto_stat & BUS_FREE_OCCUER) {
1358 ret = nsp32_busfree_occur(SCpnt, auto_stat);
1364 if (auto_stat & STATUS_PHASE) {
1366 * Read CSB and substitute CSB for SCpnt->result
1367 * to save status phase stutas byte.
1368 * scsi error handler checks host_byte (DID_*:
1369 * low level driver to indicate status), then checks
1370 * status_byte (SCSI status byte).
1372 SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN);
1375 if (auto_stat & ILLEGAL_PHASE) {
1376 /* Illegal phase is detected. SACK is not back. */
1377 nsp32_msg(KERN_WARNING,
1378 "AUTO SCSI ILLEGAL PHASE OCCUR!!!!");
1380 /* TODO: currently we don't have any action... bus reset? */
1383 * To send back SACK, assert, wait, and negate.
1385 nsp32_sack_assert(data);
1386 nsp32_wait_req(data, NEGATE);
1387 nsp32_sack_negate(data);
1391 if (auto_stat & COMMAND_PHASE) {
1393 nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed");
1396 if (auto_stat & AUTOSCSI_BUSY) {
1397 /* AutoSCSI is running */
1400 show_autophase(auto_stat);
1404 if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) {
1405 nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ");
1408 case BUSPHASE_DATA_OUT:
1409 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write");
1411 //nsp32_pio_write(SCpnt);
1415 case BUSPHASE_DATA_IN:
1416 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read");
1418 //nsp32_pio_read(SCpnt);
1422 case BUSPHASE_STATUS:
1423 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status");
1425 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1429 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase");
1430 nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1431 show_busphase(busphase);
1438 /* Phase Change IRQ */
1439 if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) {
1440 nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ");
1443 case BUSPHASE_MESSAGE_IN:
1444 nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in");
1445 nsp32_msgin_occur(SCpnt, irq_stat, 0);
1448 nsp32_msg(KERN_WARNING, "phase chg/other phase?");
1449 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n",
1450 irq_stat, trans_stat);
1451 show_busphase(busphase);
1458 if (irq_stat & IRQSTATUS_PCI_IRQ) {
1459 nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred");
1464 if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) {
1465 nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! ");
1467 * TODO: To be implemented improving bus master
1468 * transfer reliablity when BMCNTERR is occurred in
1469 * AutoSCSI phase described in specification.
1474 nsp32_dbg(NSP32_DEBUG_INTR,
1475 "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat);
1476 show_busphase(busphase);
1480 /* disable IRQ mask */
1481 nsp32_write2(base, IRQ_CONTROL, 0);
1484 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
1485 spin_unlock_irqrestore(host->host_lock, flags);
1487 spin_unlock_irqrestore(&io_request_lock, flags);
1490 nsp32_dbg(NSP32_DEBUG_INTR, "exit");
1492 return IRQ_RETVAL(handled);
1496 #define SPRINTF(args...) \
1498 if(length > (pos - buffer)) { \
1499 pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \
1500 nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\
1503 static int nsp32_proc_info(
1504 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
1505 struct Scsi_Host *host,
1511 #if !(LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
1518 unsigned long flags;
1519 nsp32_hw_data *data;
1520 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
1523 struct Scsi_Host *host;
1526 unsigned char mode_reg;
1530 /* Write is not supported, just return. */
1531 if (inout == TRUE) {
1535 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
1536 hostno = host->host_no;
1538 /* search this HBA host */
1539 host = scsi_host_hn_get(hostno);
1544 data = (nsp32_hw_data *)host->hostdata;
1545 base = host->io_port;
1547 SPRINTF("NinjaSCSI-32 status\n\n");
1548 SPRINTF("Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version);
1549 SPRINTF("SCSI host No.: %d\n", hostno);
1550 SPRINTF("IRQ: %d\n", host->irq);
1551 SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1);
1552 SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1);
1553 SPRINTF("sg_tablesize: %d\n", host->sg_tablesize);
1554 SPRINTF("Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff);
1556 mode_reg = nsp32_index_read1(base, CHIP_MODE);
1557 model = data->pci_devid->driver_data;
1560 SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no");
1562 SPRINTF("OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]);
1564 spin_lock_irqsave(&(data->Lock), flags);
1565 SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC);
1566 spin_unlock_irqrestore(&(data->Lock), flags);
1569 SPRINTF("SDTR status\n");
1570 for (id = 0; id < ARRAY_SIZE(data->target); id++) {
1572 SPRINTF("id %d: ", id);
1574 if (id == host->this_id) {
1575 SPRINTF("----- NinjaSCSI-32 host adapter\n");
1579 if (data->target[id].sync_flag == SDTR_DONE) {
1580 if (data->target[id].period == 0 &&
1581 data->target[id].offset == ASYNC_OFFSET ) {
1590 if (data->target[id].period != 0) {
1592 speed = 1000000 / (data->target[id].period * 4);
1594 SPRINTF(" transfer %d.%dMB/s, offset %d",
1597 data->target[id].offset
1604 thislength = pos - (buffer + offset);
1606 if(thislength < 0) {
1612 thislength = min(thislength, length);
1613 *start = buffer + offset;
1622 * Reset parameters and call scsi_done for data->cur_lunt.
1623 * Be careful setting SCpnt->result = DID_* before calling this function.
1625 static void nsp32_scsi_done(struct scsi_cmnd *SCpnt)
1627 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1628 unsigned int base = SCpnt->device->host->io_port;
1633 if (SCpnt->request_bufflen == 0) {
1637 if (SCpnt->use_sg) {
1638 pci_unmap_sg(data->Pci,
1639 (struct scatterlist *)SCpnt->request_buffer,
1640 SCpnt->use_sg, SCpnt->sc_data_direction);
1642 pci_unmap_single(data->Pci,
1643 (u32)SCpnt->SCp.have_data_in,
1644 SCpnt->request_bufflen,
1645 SCpnt->sc_data_direction);
1650 * clear TRANSFERCONTROL_BM_START
1652 nsp32_write2(base, TRANSFER_CONTROL, 0);
1653 nsp32_write4(base, BM_CNT, 0);
1658 (*SCpnt->scsi_done)(SCpnt);
1663 data->cur_lunt->SCpnt = NULL;
1664 data->cur_lunt = NULL;
1665 data->cur_target = NULL;
1666 data->CurrentSC = NULL;
1673 * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase
1674 * with ACK reply when below condition is matched:
1675 * MsgIn 00: Command Complete.
1676 * MsgIn 02: Save Data Pointer.
1677 * MsgIn 04: Diconnect.
1678 * In other case, unexpected BUSFREE is detected.
1680 static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph)
1682 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1683 unsigned int base = SCpnt->device->host->io_port;
1685 nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph);
1686 show_autophase(execph);
1688 nsp32_write4(base, BM_CNT, 0);
1689 nsp32_write2(base, TRANSFER_CONTROL, 0);
1692 * MsgIn 02: Save Data Pointer
1695 * Save Data Pointer is received. Adjust pointer.
1698 * SCSI-3 says if Save Data Pointer is not received, then we restart
1699 * processing and we can't adjust any SCSI data pointer in next data
1702 if (execph & MSGIN_02_VALID) {
1703 nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid");
1706 * Check sack_cnt/saved_sack_cnt, then adjust sg table if
1709 if (!(execph & MSGIN_00_VALID) &&
1710 ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) {
1711 unsigned int sacklen, s_sacklen;
1714 * Read SACK count and SAVEDSACK count, then compare.
1716 sacklen = nsp32_read4(base, SACK_CNT );
1717 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
1720 * If SAVEDSACKCNT == 0, it means SavedDataPointer is
1721 * come after data transfering.
1723 if (s_sacklen > 0) {
1725 * Comparing between sack and savedsack to
1726 * check the condition of AutoMsgIn03.
1728 * If they are same, set msgin03 == TRUE,
1729 * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at
1730 * reselection. On the other hand, if they
1731 * aren't same, set msgin03 == FALSE, and
1732 * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at
1735 if (sacklen != s_sacklen) {
1736 data->cur_lunt->msgin03 = FALSE;
1738 data->cur_lunt->msgin03 = TRUE;
1741 nsp32_adjust_busfree(SCpnt, s_sacklen);
1745 /* This value has not substitude with valid value yet... */
1746 //data->cur_lunt->save_datp = data->cur_datp;
1753 if (execph & MSGIN_03_VALID) {
1754 /* MsgIn03 was valid to be processed. No need processing. */
1760 if (data->cur_target->sync_flag & SDTR_INITIATOR) {
1762 * SDTR negotiation pulled by the initiator has not
1763 * finished yet. Fall back to ASYNC mode.
1765 nsp32_set_async(data, data->cur_target);
1766 data->cur_target->sync_flag &= ~SDTR_INITIATOR;
1767 data->cur_target->sync_flag |= SDTR_DONE;
1768 } else if (data->cur_target->sync_flag & SDTR_TARGET) {
1770 * SDTR negotiation pulled by the target has been
1773 if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) {
1775 * If valid message is received, then
1776 * negotiation is succeeded.
1780 * On the contrary, if unexpected bus free is
1781 * occurred, then negotiation is failed. Fall
1782 * back to ASYNC mode.
1784 nsp32_set_async(data, data->cur_target);
1786 data->cur_target->sync_flag &= ~SDTR_TARGET;
1787 data->cur_target->sync_flag |= SDTR_DONE;
1791 * It is always ensured by SCSI standard that initiator
1792 * switches into Bus Free Phase after
1793 * receiving message 00 (Command Complete), 04 (Disconnect).
1794 * It's the reason that processing here is valid.
1796 if (execph & MSGIN_00_VALID) {
1797 /* MsgIn 00: Command Complete */
1798 nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete");
1800 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1801 SCpnt->SCp.Message = 0;
1802 nsp32_dbg(NSP32_DEBUG_BUSFREE,
1803 "normal end stat=0x%x resid=0x%x\n",
1804 SCpnt->SCp.Status, SCpnt->resid);
1805 SCpnt->result = (DID_OK << 16) |
1806 (SCpnt->SCp.Message << 8) |
1807 (SCpnt->SCp.Status << 0);
1808 nsp32_scsi_done(SCpnt);
1809 /* All operation is done */
1811 } else if (execph & MSGIN_04_VALID) {
1812 /* MsgIn 04: Disconnect */
1813 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN);
1814 SCpnt->SCp.Message = 4;
1816 nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect");
1819 /* Unexpected bus free */
1820 nsp32_msg(KERN_WARNING, "unexpected bus free occurred");
1823 //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0);
1824 SCpnt->result = DID_ERROR << 16;
1825 nsp32_scsi_done(SCpnt);
1833 * nsp32_adjust_busfree - adjusting SG table
1835 * Note: This driver adjust the SG table using SCSI ACK
1836 * counter instead of BMCNT counter!
1838 static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen)
1840 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1841 int old_entry = data->cur_entry;
1843 int sg_num = data->cur_lunt->sg_num;
1844 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt;
1845 unsigned int restlen, sentlen;
1848 nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", SCpnt->resid);
1850 /* adjust saved SACK count with 4 byte start address boundary */
1851 s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3;
1854 * calculate new_entry from sack count and each sgt[].len
1855 * calculate the byte which is intent to send
1858 for (new_entry = old_entry; new_entry < sg_num; new_entry++) {
1859 sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND);
1860 if (sentlen > s_sacklen) {
1865 /* all sgt is processed */
1866 if (new_entry == sg_num) {
1870 if (sentlen == s_sacklen) {
1871 /* XXX: confirm it's ok or not */
1872 /* In this case, it's ok because we are at
1873 the head element of the sg. restlen is correctly calculated. */
1876 /* calculate the rest length for transfering */
1877 restlen = sentlen - s_sacklen;
1879 /* update adjusting current SG table entry */
1880 len = le32_to_cpu(sgt[new_entry].len);
1881 addr = le32_to_cpu(sgt[new_entry].addr);
1882 addr += (len - restlen);
1883 sgt[new_entry].addr = cpu_to_le32(addr);
1884 sgt[new_entry].len = cpu_to_le32(restlen);
1886 /* set cur_entry with new_entry */
1887 data->cur_entry = new_entry;
1892 if (SCpnt->resid < sentlen) {
1893 nsp32_msg(KERN_ERR, "resid underflow");
1896 SCpnt->resid -= sentlen;
1897 nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", SCpnt->resid);
1899 /* update hostdata and lun */
1906 * It's called MsgOut phase occur.
1907 * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in
1908 * message out phase. It, however, has more than 3 messages,
1909 * HBA creates the interrupt and we have to process by hand.
1911 static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt)
1913 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1914 unsigned int base = SCpnt->device->host->io_port;
1915 //unsigned short command;
1919 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
1920 "enter: msgout_len: 0x%x", data->msgout_len);
1923 * If MsgOut phase is occurred without having any
1924 * message, then No_Operation is sent (SCSI-2).
1926 if (data->msgout_len == 0) {
1927 nsp32_build_nop(SCpnt);
1931 * Set SGTP ADDR current entry for restarting AUTOSCSI,
1932 * because SGTP is incremented next point.
1933 * There is few statement in the specification...
1935 new_sgtp = data->cur_lunt->sglun_paddr +
1936 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
1941 for (i = 0; i < data->msgout_len; i++) {
1942 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR,
1943 "%d : 0x%x", i, data->msgoutbuf[i]);
1946 * Check REQ is asserted.
1948 nsp32_wait_req(data, ASSERT);
1950 if (i == (data->msgout_len - 1)) {
1952 * If the last message, set the AutoSCSI restart
1953 * before send back the ack message. AutoSCSI
1954 * restart automatically negate ATN signal.
1956 //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
1957 //nsp32_restart_autoscsi(SCpnt, command);
1958 nsp32_write2(base, COMMAND_CONTROL,
1959 (CLEAR_CDB_FIFO_POINTER |
1960 AUTO_COMMAND_PHASE |
1962 AUTO_MSGIN_00_OR_04 |
1966 * Write data with SACK, then wait sack is
1967 * automatically negated.
1969 nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]);
1970 nsp32_wait_sack(data, NEGATE);
1972 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n",
1973 nsp32_read1(base, SCSI_BUS_MONITOR));
1976 data->msgout_len = 0;
1978 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit");
1984 * Note: Restarting AutoSCSI needs set:
1985 * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL
1987 static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command)
1989 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
1990 unsigned int base = data->BaseAddress;
1991 unsigned short transfer = 0;
1993 nsp32_dbg(NSP32_DEBUG_RESTART, "enter");
1995 if (data->cur_target == NULL || data->cur_lunt == NULL) {
1996 nsp32_msg(KERN_ERR, "Target or Lun is invalid");
2001 * Don't set BM_START_ADR before setting this register.
2003 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg);
2008 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth);
2011 * set SREQ hazard killer sampling rate
2013 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg);
2016 * set SGT ADDR (physical address)
2018 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr);
2021 * set TRANSFER CONTROL REG
2024 transfer |= (TRANSFER_GO | ALL_COUNTER_CLR);
2025 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) {
2026 if (SCpnt->request_bufflen > 0) {
2027 transfer |= BM_START;
2029 } else if (data->trans_method & NSP32_TRANSFER_MMIO) {
2030 transfer |= CB_MMIO_MODE;
2031 } else if (data->trans_method & NSP32_TRANSFER_PIO) {
2032 transfer |= CB_IO_MODE;
2034 nsp32_write2(base, TRANSFER_CONTROL, transfer);
2039 * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ?
2041 command |= (CLEAR_CDB_FIFO_POINTER |
2042 AUTO_COMMAND_PHASE |
2044 nsp32_write2(base, COMMAND_CONTROL, command);
2046 nsp32_dbg(NSP32_DEBUG_RESTART, "exit");
2051 * cannot run automatically message in occur
2053 static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt,
2054 unsigned long irq_status,
2055 unsigned short execph)
2057 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2058 unsigned int base = SCpnt->device->host->io_port;
2060 unsigned char msgtype;
2061 unsigned char newlun;
2062 unsigned short command = 0;
2063 int msgclear = TRUE;
2068 * read first message
2069 * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure
2070 * of Message-In have to be processed before sending back SCSI ACK.
2072 msg = nsp32_read1(base, SCSI_DATA_IN);
2073 data->msginbuf[(unsigned char)data->msgin_len] = msg;
2074 msgtype = data->msginbuf[0];
2075 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR,
2076 "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x",
2077 data->msgin_len, msg, msgtype);
2080 * TODO: We need checking whether bus phase is message in?
2086 nsp32_sack_assert(data);
2089 * processing IDENTIFY
2091 if (msgtype & 0x80) {
2092 if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) {
2093 /* Invalid (non reselect) phase */
2097 newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */
2098 ret = nsp32_reselection(SCpnt, newlun);
2107 * processing messages except for IDENTIFY
2109 * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO.
2115 case COMMAND_COMPLETE:
2118 * These messages should not be occurred.
2119 * They should be processed on AutoSCSI sequencer.
2121 nsp32_msg(KERN_WARNING,
2122 "unexpected message of AutoSCSI MsgIn: 0x%x", msg);
2125 case RESTORE_POINTERS:
2127 * AutoMsgIn03 is disabled, and HBA gets this message.
2130 if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) {
2131 unsigned int s_sacklen;
2133 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT);
2134 if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) {
2135 nsp32_adjust_busfree(SCpnt, s_sacklen);
2137 /* No need to rewrite SGT */
2140 data->cur_lunt->msgin03 = FALSE;
2142 /* Update with the new value */
2144 /* reset SACK/SavedACK counter (or ALL clear?) */
2145 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
2148 * set new sg pointer
2150 new_sgtp = data->cur_lunt->sglun_paddr +
2151 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable));
2152 nsp32_write4(base, SGT_ADR, new_sgtp);
2158 * These messages should not be occurred.
2159 * They should be processed on AutoSCSI sequencer.
2161 nsp32_msg (KERN_WARNING,
2162 "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS");
2166 case MESSAGE_REJECT:
2167 /* If previous message_out is sending SDTR, and get
2168 message_reject from target, SDTR negotiation is failed */
2169 if (data->cur_target->sync_flag &
2170 (SDTR_INITIATOR | SDTR_TARGET)) {
2172 * Current target is negotiating SDTR, but it's
2173 * failed. Fall back to async transfer mode, and set
2176 nsp32_set_async(data, data->cur_target);
2177 data->cur_target->sync_flag &= ~SDTR_INITIATOR;
2178 data->cur_target->sync_flag |= SDTR_DONE;
2183 case LINKED_CMD_COMPLETE:
2184 case LINKED_FLG_CMD_COMPLETE:
2185 /* queue tag is not supported currently */
2186 nsp32_msg (KERN_WARNING,
2187 "unsupported message: 0x%x", msgtype);
2190 case INITIATE_RECOVERY:
2191 /* staring ECA (Extended Contingent Allegiance) state. */
2192 /* This message is declined in SPI2 or later. */
2199 case SIMPLE_QUEUE_TAG:
2202 * 0x23: Ignore_Wide_Residue is not declared in scsi.h.
2203 * No support is needed.
2205 if (data->msgin_len >= 1) {
2209 /* current position is 1-byte of 2 byte */
2217 case EXTENDED_MESSAGE:
2218 if (data->msgin_len < 1) {
2220 * Current position does not reach 2-byte
2221 * (2-byte is extended message length).
2227 if ((data->msginbuf[1] + 1) > data->msgin_len) {
2229 * Current extended message has msginbuf[1] + 2
2230 * (msgin_len starts counting from 0, so buf[1] + 1).
2231 * If current message position is not finished,
2232 * continue receiving message.
2239 * Reach here means regular length of each type of
2240 * extended messages.
2242 switch (data->msginbuf[2]) {
2243 case EXTENDED_MODIFY_DATA_POINTER:
2245 goto reject; /* not implemented yet */
2250 * Exchange this message between initiator and target.
2252 if (data->msgin_len != EXTENDED_SDTR_LEN + 1) {
2254 * received inappropriate message.
2260 nsp32_analyze_sdtr(SCpnt);
2264 case EXTENDED_EXTENDED_IDENTIFY:
2265 /* SCSI-I only, not supported. */
2266 goto reject; /* not implemented yet */
2271 goto reject; /* not implemented yet */
2285 if (msgclear == TRUE) {
2286 data->msgin_len = 0;
2289 * If restarting AutoSCSI, but there are some message to out
2290 * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0
2291 * (MV_VALID = 0). When commandcontrol is written with
2292 * AutoSCSI restart, at the same time MsgOutOccur should be
2293 * happened (however, such situation is really possible...?).
2295 if (data->msgout_len > 0) {
2296 nsp32_write4(base, SCSI_MSG_OUT, 0);
2297 command |= AUTO_ATN;
2302 * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed.
2304 command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02);
2307 * If current msgin03 is TRUE, then flag on.
2309 if (data->cur_lunt->msgin03 == TRUE) {
2310 command |= AUTO_MSGIN_03;
2312 data->cur_lunt->msgin03 = FALSE;
2320 nsp32_restart_autoscsi(SCpnt, command);
2323 * wait SCSI REQ negate for REQ-ACK handshake
2325 nsp32_wait_req(data, NEGATE);
2330 nsp32_sack_negate(data);
2332 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
2337 nsp32_msg(KERN_WARNING,
2338 "invalid or unsupported MessageIn, rejected. "
2339 "current msg: 0x%x (len: 0x%x), processing msg: 0x%x",
2340 msg, data->msgin_len, msgtype);
2341 nsp32_build_reject(SCpnt);
2342 data->msgin_len = 0;
2350 static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt)
2352 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2353 nsp32_target *target = data->cur_target;
2354 nsp32_sync_table *synct;
2355 unsigned char get_period = data->msginbuf[3];
2356 unsigned char get_offset = data->msginbuf[4];
2360 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter");
2362 synct = data->synct;
2363 syncnum = data->syncnum;
2366 * If this inititor sent the SDTR message, then target responds SDTR,
2367 * initiator SYNCREG, ACKWIDTH from SDTR parameter.
2368 * Messages are not appropriate, then send back reject message.
2369 * If initiator did not send the SDTR, but target sends SDTR,
2370 * initiator calculator the appropriate parameter and send back SDTR.
2372 if (target->sync_flag & SDTR_INITIATOR) {
2374 * Initiator sent SDTR, the target responds and
2375 * send back negotiation SDTR.
2377 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR");
2379 target->sync_flag &= ~SDTR_INITIATOR;
2380 target->sync_flag |= SDTR_DONE;
2385 if (get_offset > SYNC_OFFSET) {
2387 * Negotiation is failed, the target send back
2388 * unexpected offset value.
2393 if (get_offset == ASYNC_OFFSET) {
2395 * Negotiation is succeeded, the target want
2396 * to fall back into asynchronous transfer mode.
2403 * Check whether sync period is too short. If too short,
2404 * fall back to async mode. If it's ok, then investigate
2405 * the received sync period. If sync period is acceptable
2406 * between sync table start_period and end_period, then
2407 * set this I_T nexus as sent offset and period.
2408 * If it's not acceptable, send back reject and fall back
2411 if (get_period < data->synct[0].period_num) {
2413 * Negotiation is failed, the target send back
2414 * unexpected period value.
2419 entry = nsp32_search_period_entry(data, target, get_period);
2423 * Target want to use long period which is not
2424 * acceptable NinjaSCSI-32Bi/UDE.
2430 * Set new sync table and offset in this I_T nexus.
2432 nsp32_set_sync_entry(data, target, entry, get_offset);
2434 /* Target send SDTR to initiator. */
2435 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR");
2437 target->sync_flag |= SDTR_INITIATOR;
2440 if (get_offset > SYNC_OFFSET) {
2441 /* send back as SYNC_OFFSET */
2442 get_offset = SYNC_OFFSET;
2446 if (get_period < data->synct[0].period_num) {
2447 get_period = data->synct[0].period_num;
2450 entry = nsp32_search_period_entry(data, target, get_period);
2452 if (get_offset == ASYNC_OFFSET || entry < 0) {
2453 nsp32_set_async(data, target);
2454 nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET);
2456 nsp32_set_sync_entry(data, target, entry, get_offset);
2457 nsp32_build_sdtr(SCpnt, get_period, get_offset);
2461 target->period = get_period;
2462 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit");
2467 * If the current message is unacceptable, send back to the target
2468 * with reject message.
2470 nsp32_build_reject(SCpnt);
2473 nsp32_set_async(data, target); /* set as ASYNC transfer mode */
2476 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async");
2482 * Search config entry number matched in sync_table from given
2483 * target and speed period value. If failed to search, return negative value.
2485 static int nsp32_search_period_entry(nsp32_hw_data *data,
2486 nsp32_target *target,
2487 unsigned char period)
2491 if (target->limit_entry >= data->syncnum) {
2492 nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!");
2493 target->limit_entry = 0;
2496 for (i = target->limit_entry; i < data->syncnum; i++) {
2497 if (period >= data->synct[i].start_period &&
2498 period <= data->synct[i].end_period) {
2504 * Check given period value is over the sync_table value.
2505 * If so, return max value.
2507 if (i == data->syncnum) {
2516 * target <-> initiator use ASYNC transfer
2518 static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target)
2520 unsigned char period = data->synct[target->limit_entry].period_num;
2522 target->offset = ASYNC_OFFSET;
2524 target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET);
2525 target->ackwidth = 0;
2526 target->sample_reg = 0;
2528 nsp32_dbg(NSP32_DEBUG_SYNC, "set async");
2533 * target <-> initiator use maximum SYNC transfer
2535 static void nsp32_set_max_sync(nsp32_hw_data *data,
2536 nsp32_target *target,
2537 unsigned char *period,
2538 unsigned char *offset)
2540 unsigned char period_num, ackwidth;
2542 period_num = data->synct[target->limit_entry].period_num;
2543 *period = data->synct[target->limit_entry].start_period;
2544 ackwidth = data->synct[target->limit_entry].ackwidth;
2545 *offset = SYNC_OFFSET;
2547 target->syncreg = TO_SYNCREG(period_num, *offset);
2548 target->ackwidth = ackwidth;
2549 target->offset = *offset;
2550 target->sample_reg = 0; /* disable SREQ sampling */
2555 * target <-> initiator use entry number speed
2557 static void nsp32_set_sync_entry(nsp32_hw_data *data,
2558 nsp32_target *target,
2560 unsigned char offset)
2562 unsigned char period, ackwidth, sample_rate;
2564 period = data->synct[entry].period_num;
2565 ackwidth = data->synct[entry].ackwidth;
2567 sample_rate = data->synct[entry].sample_rate;
2569 target->syncreg = TO_SYNCREG(period, offset);
2570 target->ackwidth = ackwidth;
2571 target->offset = offset;
2572 target->sample_reg = sample_rate | SAMPLING_ENABLE;
2574 nsp32_dbg(NSP32_DEBUG_SYNC, "set sync");
2579 * It waits until SCSI REQ becomes assertion or negation state.
2581 * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then
2582 * connected target responds SCSI REQ negation. We have to wait
2583 * SCSI REQ becomes negation in order to negate SCSI ACK signal for
2584 * REQ-ACK handshake.
2586 static void nsp32_wait_req(nsp32_hw_data *data, int state)
2588 unsigned int base = data->BaseAddress;
2590 unsigned char bus, req_bit;
2592 if (!((state == ASSERT) || (state == NEGATE))) {
2593 nsp32_msg(KERN_ERR, "unknown state designation");
2596 req_bit = (state == ASSERT ? BUSMON_REQ : 0);
2599 bus = nsp32_read1(base, SCSI_BUS_MONITOR);
2600 if ((bus & BUSMON_REQ) == req_bit) {
2601 nsp32_dbg(NSP32_DEBUG_WAIT,
2602 "wait_time: %d", wait_time);
2607 } while (wait_time < REQSACK_TIMEOUT_TIME);
2609 nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit);
2613 * It waits until SCSI SACK becomes assertion or negation state.
2615 static void nsp32_wait_sack(nsp32_hw_data *data, int state)
2617 unsigned int base = data->BaseAddress;
2619 unsigned char bus, ack_bit;
2621 if (!((state == ASSERT) || (state == NEGATE))) {
2622 nsp32_msg(KERN_ERR, "unknown state designation");
2625 ack_bit = (state == ASSERT ? BUSMON_ACK : 0);
2628 bus = nsp32_read1(base, SCSI_BUS_MONITOR);
2629 if ((bus & BUSMON_ACK) == ack_bit) {
2630 nsp32_dbg(NSP32_DEBUG_WAIT,
2631 "wait_time: %d", wait_time);
2636 } while (wait_time < REQSACK_TIMEOUT_TIME);
2638 nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit);
2644 * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1.
2646 static void nsp32_sack_assert(nsp32_hw_data *data)
2648 unsigned int base = data->BaseAddress;
2649 unsigned char busctrl;
2651 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
2652 busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB);
2653 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
2659 static void nsp32_sack_negate(nsp32_hw_data *data)
2661 unsigned int base = data->BaseAddress;
2662 unsigned char busctrl;
2664 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL);
2665 busctrl &= ~BUSCTL_ACK;
2666 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl);
2672 * Note: n_io_port is defined as 0x7f because I/O register port is
2674 * 0x800-0x8ff: memory mapped I/O port
2675 * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly)
2676 * 0xc00-0xfff: CardBus status registers
2678 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
2682 static int nsp32_detect(struct pci_dev *pdev)
2686 #define PCIDEV (data->Pci)
2687 static int nsp32_detect(struct scsi_host_template *sht)
2690 struct Scsi_Host *host; /* registered host structure */
2691 struct resource *res;
2692 nsp32_hw_data *data;
2696 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
2699 * register this HBA as SCSI device
2701 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
2702 host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data));
2704 host = scsi_register(sht, sizeof(nsp32_hw_data));
2707 nsp32_msg (KERN_ERR, "failed to scsi register");
2714 data = (nsp32_hw_data *)host->hostdata;
2716 memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data));
2718 host->irq = data->IrqNumber;
2719 host->io_port = data->BaseAddress;
2720 host->unique_id = data->BaseAddress;
2721 host->n_io_port = data->NumAddress;
2722 host->base = (unsigned long)data->MmioAddress;
2723 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,63))
2724 scsi_set_pci_device(host, PCIDEV);
2728 spin_lock_init(&(data->Lock));
2730 data->cur_lunt = NULL;
2731 data->cur_target = NULL;
2734 * Bus master transfer mode is supported currently.
2736 data->trans_method = NSP32_TRANSFER_BUSMASTER;
2739 * Set clock div, CLOCK_4 (HBA has own external clock, and
2740 * dividing * 100ns/4).
2741 * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet.
2743 data->clock = CLOCK_4;
2746 * Select appropriate nsp32_sync_table and set I_CLOCKDIV.
2748 switch (data->clock) {
2750 /* If data->clock is CLOCK_4, then select 40M sync table. */
2751 data->synct = nsp32_sync_table_40M;
2752 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
2755 /* If data->clock is CLOCK_2, then select 20M sync table. */
2756 data->synct = nsp32_sync_table_20M;
2757 data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M);
2760 /* If data->clock is PCICLK, then select pci sync table. */
2761 data->synct = nsp32_sync_table_pci;
2762 data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci);
2765 nsp32_msg(KERN_WARNING,
2766 "Invalid clock div is selected, set CLOCK_4.");
2767 /* Use default value CLOCK_4 */
2768 data->clock = CLOCK_4;
2769 data->synct = nsp32_sync_table_40M;
2770 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M);
2780 if (pci_set_dma_mask(PCIDEV, DMA_32BIT_MASK) != 0) {
2781 nsp32_msg (KERN_ERR, "failed to set PCI DMA mask");
2782 goto scsi_unregister;
2786 * allocate autoparam DMA resource.
2788 data->autoparam = pci_alloc_consistent(PCIDEV, sizeof(nsp32_autoparam), &(data->auto_paddr));
2789 if (data->autoparam == NULL) {
2790 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
2791 goto scsi_unregister;
2795 * allocate scatter-gather DMA resource.
2797 data->sg_list = pci_alloc_consistent(PCIDEV, NSP32_SG_TABLE_SIZE,
2799 if (data->sg_list == NULL) {
2800 nsp32_msg(KERN_ERR, "failed to allocate DMA memory");
2801 goto free_autoparam;
2804 for (i = 0; i < ARRAY_SIZE(data->lunt); i++) {
2805 for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) {
2806 int offset = i * ARRAY_SIZE(data->lunt[0]) + j;
2813 .sglun = &(data->sg_list[offset]),
2814 .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)),
2817 data->lunt[i][j] = tmp;
2824 for (i = 0; i < ARRAY_SIZE(data->target); i++) {
2825 nsp32_target *target = &(data->target[i]);
2827 target->limit_entry = 0;
2828 target->sync_flag = 0;
2829 nsp32_set_async(data, target);
2835 ret = nsp32_getprom_param(data);
2837 data->resettime = 3; /* default 3 */
2845 snprintf(data->info_str, sizeof(data->info_str),
2846 "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x",
2847 host->irq, host->io_port, host->n_io_port);
2852 * Note: It's important to reset SCSI bus in initialization phase.
2853 * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when
2854 * system is coming up, so SCSI devices connected to HBA is set as
2855 * un-asynchronous mode. It brings the merit that this HBA is
2856 * ready to start synchronous transfer without any preparation,
2857 * but we are difficult to control transfer speed. In addition,
2858 * it prevents device transfer speed from effecting EEPROM start-up
2859 * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as
2860 * Auto Mode, then FAST-10M is selected when SCSI devices are
2861 * connected same or more than 4 devices. It should be avoided
2862 * depending on this specification. Thus, resetting the SCSI bus
2863 * restores all connected SCSI devices to asynchronous mode, then
2864 * this driver set SDTR safely later, and we can control all SCSI
2865 * device transfer mode.
2867 nsp32_do_bus_reset(data);
2869 ret = request_irq(host->irq, do_nsp32_isr,
2870 SA_SHIRQ | SA_SAMPLE_RANDOM, "nsp32", data);
2872 nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 "
2873 "SCSI PCI controller. Interrupt: %d", host->irq);
2880 res = request_region(host->io_port, host->n_io_port, "nsp32");
2883 "I/O region 0x%lx+0x%lx is already used",
2884 data->BaseAddress, data->NumAddress);
2888 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
2889 scsi_add_host (host, &PCIDEV->dev);
2890 scsi_scan_host(host);
2892 pci_set_drvdata(PCIDEV, host);
2896 free_irq(host->irq, data);
2899 pci_free_consistent(PCIDEV, NSP32_SG_TABLE_SIZE,
2900 data->sg_list, data->sg_paddr);
2903 pci_free_consistent(PCIDEV, sizeof(nsp32_autoparam),
2904 data->autoparam, data->auto_paddr);
2907 scsi_host_put(host);
2916 static int nsp32_release(struct Scsi_Host *host)
2918 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
2920 if (data->autoparam) {
2921 pci_free_consistent(data->Pci, sizeof(nsp32_autoparam),
2922 data->autoparam, data->auto_paddr);
2925 if (data->sg_list) {
2926 pci_free_consistent(data->Pci, NSP32_SG_TABLE_SIZE,
2927 data->sg_list, data->sg_paddr);
2931 free_irq(host->irq, data);
2934 if (host->io_port && host->n_io_port) {
2935 release_region(host->io_port, host->n_io_port);
2938 if (data->MmioAddress) {
2939 iounmap(data->MmioAddress);
2945 static const char *nsp32_info(struct Scsi_Host *shpnt)
2947 nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata;
2949 return data->info_str;
2953 /****************************************************************************
2956 static int nsp32_eh_abort(struct scsi_cmnd *SCpnt)
2958 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2959 unsigned int base = SCpnt->device->host->io_port;
2961 nsp32_msg(KERN_WARNING, "abort");
2963 if (data->cur_lunt->SCpnt == NULL) {
2964 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed");
2968 if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) {
2969 /* reset SDTR negotiation */
2970 data->cur_target->sync_flag = 0;
2971 nsp32_set_async(data, data->cur_target);
2974 nsp32_write2(base, TRANSFER_CONTROL, 0);
2975 nsp32_write2(base, BM_CNT, 0);
2977 SCpnt->result = DID_ABORT << 16;
2978 nsp32_scsi_done(SCpnt);
2980 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success");
2984 static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt)
2986 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata;
2987 unsigned int base = SCpnt->device->host->io_port;
2989 spin_lock_irq(SCpnt->device->host->host_lock);
2991 nsp32_msg(KERN_INFO, "Bus Reset");
2992 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
2994 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
2995 nsp32_do_bus_reset(data);
2996 nsp32_write2(base, IRQ_CONTROL, 0);
2998 spin_unlock_irq(SCpnt->device->host->host_lock);
2999 return SUCCESS; /* SCSI bus reset is succeeded at any time. */
3002 static void nsp32_do_bus_reset(nsp32_hw_data *data)
3004 unsigned int base = data->BaseAddress;
3005 unsigned short intrdat;
3008 nsp32_dbg(NSP32_DEBUG_BUSRESET, "in");
3012 * clear TRANSFERCONTROL_BM_START
3015 nsp32_write2(base, TRANSFER_CONTROL, 0);
3016 nsp32_write4(base, BM_CNT, 0);
3017 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK);
3020 * fall back to asynchronous transfer mode
3021 * initialize SDTR negotiation flag
3023 for (i = 0; i < ARRAY_SIZE(data->target); i++) {
3024 nsp32_target *target = &data->target[i];
3026 target->sync_flag = 0;
3027 nsp32_set_async(data, target);
3033 nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST);
3034 udelay(RESET_HOLD_TIME);
3035 nsp32_write1(base, SCSI_BUS_CONTROL, 0);
3036 for(i = 0; i < 5; i++) {
3037 intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */
3038 nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat);
3041 data->CurrentSC = NULL;
3044 static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt)
3046 struct Scsi_Host *host = SCpnt->device->host;
3047 unsigned int base = SCpnt->device->host->io_port;
3048 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
3050 nsp32_msg(KERN_INFO, "Host Reset");
3051 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt);
3053 spin_lock_irq(SCpnt->device->host->host_lock);
3056 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK);
3057 nsp32_do_bus_reset(data);
3058 nsp32_write2(base, IRQ_CONTROL, 0);
3060 spin_unlock_irq(SCpnt->device->host->host_lock);
3061 return SUCCESS; /* Host reset is succeeded at any time. */
3065 /**************************************************************************
3070 * getting EEPROM parameter
3072 static int nsp32_getprom_param(nsp32_hw_data *data)
3074 int vendor = data->pci_devid->vendor;
3075 int device = data->pci_devid->device;
3081 ret = nsp32_prom_read(data, 0x7e);
3083 nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret);
3086 ret = nsp32_prom_read(data, 0x7f);
3088 nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret);
3095 if (vendor == PCI_VENDOR_ID_WORKBIT &&
3096 device == PCI_DEVICE_ID_WORKBIT_STANDARD) {
3097 ret = nsp32_getprom_c16(data);
3098 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&
3099 device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) {
3100 ret = nsp32_getprom_at24(data);
3101 } else if (vendor == PCI_VENDOR_ID_WORKBIT &&
3102 device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) {
3103 ret = nsp32_getprom_at24(data);
3105 nsp32_msg(KERN_WARNING, "Unknown EEPROM");
3109 /* for debug : SPROM data full checking */
3110 for (i = 0; i <= 0x1f; i++) {
3111 val = nsp32_prom_read(data, i);
3112 nsp32_dbg(NSP32_DEBUG_EEPROM,
3113 "rom address 0x%x : 0x%x", i, val);
3121 * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map:
3124 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
3125 * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M
3126 * 0x07 : HBA Synchronous Transfer Period
3127 * Value 0: AutoSync, 1: Manual Setting
3128 * 0x08 - 0x0f : Not Used? (0x0)
3129 * 0x10 : Bus Termination
3130 * Value 0: Auto[ON], 1: ON, 2: OFF
3131 * 0x11 : Not Used? (0)
3132 * 0x12 : Bus Reset Delay Time (0x03)
3133 * 0x13 : Bootable CD Support
3134 * Value 0: Disable, 1: Enable
3135 * 0x14 : Device Scan
3136 * Bit 7 6 5 4 3 2 1 0
3137 * | <----------------->
3138 * | SCSI ID: Value 0: Skip, 1: YES
3139 * |-> Value 0: ALL scan, Value 1: Manual
3140 * 0x15 - 0x1b : Not Used? (0)
3141 * 0x1c : Constant? (0x01) (clock div?)
3142 * 0x1d - 0x7c : Not Used (0xff)
3143 * 0x7d : Not Used? (0xff)
3144 * 0x7e : Constant (0x55), Validity signature
3145 * 0x7f : Constant (0xaa), Validity signature
3147 static int nsp32_getprom_at24(nsp32_hw_data *data)
3151 nsp32_target *target;
3155 * Reset time which is designated by EEPROM.
3157 * TODO: Not used yet.
3159 data->resettime = nsp32_prom_read(data, 0x12);
3162 * HBA Synchronous Transfer Period
3164 * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says
3165 * that if auto_sync is 0 (auto), and connected SCSI devices are
3166 * same or lower than 3, then transfer speed is set as ULTRA-20M.
3167 * On the contrary if connected SCSI devices are same or higher
3168 * than 4, then transfer speed is set as FAST-10M.
3170 * I break this rule. The number of connected SCSI devices are
3171 * only ignored. If auto_sync is 0 (auto), then transfer speed is
3172 * forced as ULTRA-20M.
3174 ret = nsp32_prom_read(data, 0x07);
3183 nsp32_msg(KERN_WARNING,
3184 "Unsupported Auto Sync mode. Fall back to manual mode.");
3188 if (trans_mode == ULTRA20M_MODE) {
3193 * each device Synchronous Transfer Period
3195 for (i = 0; i < NSP32_HOST_SCSIID; i++) {
3196 target = &data->target[i];
3197 if (auto_sync == TRUE) {
3198 target->limit_entry = 0; /* set as ULTRA20M */
3200 ret = nsp32_prom_read(data, i);
3201 entry = nsp32_search_period_entry(data, target, ret);
3203 /* search failed... set maximum speed */
3206 target->limit_entry = entry;
3215 * C16 110 (I-O Data: SC-NBD) data map:
3218 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6)
3219 * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC
3220 * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync)
3221 * 0x08 - 0x0f : Not Used? (0x0)
3222 * 0x10 : Transfer Mode
3223 * Value 0: PIO, 1: Busmater
3224 * 0x11 : Bus Reset Delay Time (0x00-0x20)
3225 * 0x12 : Bus Termination
3226 * Value 0: Disable, 1: Enable
3227 * 0x13 - 0x19 : Disconnection
3228 * Value 0: Disable, 1: Enable
3229 * 0x1a - 0x7c : Not Used? (0)
3230 * 0x7d : Not Used? (0xf8)
3231 * 0x7e : Constant (0x55), Validity signature
3232 * 0x7f : Constant (0xaa), Validity signature
3234 static int nsp32_getprom_c16(nsp32_hw_data *data)
3237 nsp32_target *target;
3241 * Reset time which is designated by EEPROM.
3243 * TODO: Not used yet.
3245 data->resettime = nsp32_prom_read(data, 0x11);
3248 * each device Synchronous Transfer Period
3250 for (i = 0; i < NSP32_HOST_SCSIID; i++) {
3251 target = &data->target[i];
3252 ret = nsp32_prom_read(data, i);
3254 case 0: /* 20MB/s */
3257 case 1: /* 10MB/s */
3266 default: /* default 20MB/s */
3270 entry = nsp32_search_period_entry(data, target, val);
3271 if (entry < 0 || trans_mode == ULTRA20M_MODE) {
3272 /* search failed... set maximum speed */
3275 target->limit_entry = entry;
3283 * Atmel AT24C01A (drived in 5V) serial EEPROM routines
3285 static int nsp32_prom_read(nsp32_hw_data *data, int romaddr)
3289 /* start condition */
3290 nsp32_prom_start(data);
3292 /* device address */
3293 nsp32_prom_write_bit(data, 1); /* 1 */
3294 nsp32_prom_write_bit(data, 0); /* 0 */
3295 nsp32_prom_write_bit(data, 1); /* 1 */
3296 nsp32_prom_write_bit(data, 0); /* 0 */
3297 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
3298 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
3299 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
3301 /* R/W: W for dummy write */
3302 nsp32_prom_write_bit(data, 0);
3305 nsp32_prom_write_bit(data, 0);
3308 for (i = 7; i >= 0; i--) {
3309 nsp32_prom_write_bit(data, ((romaddr >> i) & 1));
3313 nsp32_prom_write_bit(data, 0);
3315 /* start condition */
3316 nsp32_prom_start(data);
3318 /* device address */
3319 nsp32_prom_write_bit(data, 1); /* 1 */
3320 nsp32_prom_write_bit(data, 0); /* 0 */
3321 nsp32_prom_write_bit(data, 1); /* 1 */
3322 nsp32_prom_write_bit(data, 0); /* 0 */
3323 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */
3324 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */
3325 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */
3328 nsp32_prom_write_bit(data, 1);
3331 nsp32_prom_write_bit(data, 0);
3335 for (i = 7; i >= 0; i--) {
3336 val += (nsp32_prom_read_bit(data) << i);
3340 nsp32_prom_write_bit(data, 1);
3342 /* stop condition */
3343 nsp32_prom_stop(data);
3348 static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val)
3350 int base = data->BaseAddress;
3353 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL);
3361 nsp32_index_write1(base, SERIAL_ROM_CTL, tmp);
3366 static int nsp32_prom_get(nsp32_hw_data *data, int bit)
3368 int base = data->BaseAddress;
3372 nsp32_msg(KERN_ERR, "return value is not appropriate");
3377 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit;
3390 static void nsp32_prom_start (nsp32_hw_data *data)
3392 /* start condition */
3393 nsp32_prom_set(data, SCL, 1);
3394 nsp32_prom_set(data, SDA, 1);
3395 nsp32_prom_set(data, ENA, 1); /* output mode */
3396 nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting
3397 * SDA 1->0 is start condition */
3398 nsp32_prom_set(data, SCL, 0);
3401 static void nsp32_prom_stop (nsp32_hw_data *data)
3403 /* stop condition */
3404 nsp32_prom_set(data, SCL, 1);
3405 nsp32_prom_set(data, SDA, 0);
3406 nsp32_prom_set(data, ENA, 1); /* output mode */
3407 nsp32_prom_set(data, SDA, 1);
3408 nsp32_prom_set(data, SCL, 0);
3411 static void nsp32_prom_write_bit(nsp32_hw_data *data, int val)
3414 nsp32_prom_set(data, SDA, val);
3415 nsp32_prom_set(data, SCL, 1 );
3416 nsp32_prom_set(data, SCL, 0 );
3419 static int nsp32_prom_read_bit(nsp32_hw_data *data)
3424 nsp32_prom_set(data, ENA, 0); /* input mode */
3425 nsp32_prom_set(data, SCL, 1);
3427 val = nsp32_prom_get(data, SDA);
3429 nsp32_prom_set(data, SCL, 0);
3430 nsp32_prom_set(data, ENA, 1); /* output mode */
3436 /**************************************************************************
3441 /* Device suspended */
3442 static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state)
3444 struct Scsi_Host *host = pci_get_drvdata(pdev);
3446 nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host);
3448 pci_save_state (pdev);
3449 pci_disable_device (pdev);
3450 pci_set_power_state(pdev, pci_choose_state(pdev, state));
3455 /* Device woken up */
3456 static int nsp32_resume(struct pci_dev *pdev)
3458 struct Scsi_Host *host = pci_get_drvdata(pdev);
3459 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata;
3462 nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host);
3464 pci_set_power_state(pdev, PCI_D0);
3465 pci_enable_wake (pdev, PCI_D0, 0);
3466 pci_restore_state (pdev);
3468 reg = nsp32_read2(data->BaseAddress, INDEX_REG);
3470 nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg);
3472 if (reg == 0xffff) {
3473 nsp32_msg(KERN_INFO, "missing device. abort resume.");
3477 nsp32hw_init (data);
3478 nsp32_do_bus_reset(data);
3480 nsp32_msg(KERN_INFO, "resume success");
3485 /* Enable wake event */
3486 static int nsp32_enable_wake(struct pci_dev *pdev, pci_power_t state, int enable)
3488 struct Scsi_Host *host = pci_get_drvdata(pdev);
3490 nsp32_msg(KERN_INFO, "pci-enable_wake: stub, pdev=0x%p, enable=%d, slot=%s, host=0x%p", pdev, enable, pci_name(pdev), host);
3496 /************************************************************************
3497 * PCI/Cardbus probe/remove routine
3499 static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id)
3502 nsp32_hw_data *data = &nsp32_data_base;
3504 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
3506 ret = pci_enable_device(pdev);
3508 nsp32_msg(KERN_ERR, "failed to enable pci device");
3513 data->pci_devid = id;
3514 data->IrqNumber = pdev->irq;
3515 data->BaseAddress = pci_resource_start(pdev, 0);
3516 data->NumAddress = pci_resource_len (pdev, 0);
3517 data->MmioAddress = ioremap_nocache(pci_resource_start(pdev, 1),
3518 pci_resource_len (pdev, 1));
3519 data->MmioLength = pci_resource_len (pdev, 1);
3521 pci_set_master(pdev);
3523 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
3524 ret = nsp32_detect(pdev);
3526 ret = scsi_register_host(&nsp32_template);
3529 nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s",
3531 data->MmioAddress, data->MmioLength,
3533 nsp32_model[id->driver_data]);
3535 nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret);
3540 static void __devexit nsp32_remove(struct pci_dev *pdev)
3542 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
3543 struct Scsi_Host *host = pci_get_drvdata(pdev);
3546 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter");
3548 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73))
3549 scsi_remove_host(host);
3551 nsp32_release(host);
3553 scsi_host_put(host);
3555 scsi_unregister_host(&nsp32_template);
3561 static struct pci_driver nsp32_driver = {
3563 .id_table = nsp32_pci_table,
3564 .probe = nsp32_probe,
3565 .remove = __devexit_p(nsp32_remove),
3567 .suspend = nsp32_suspend,
3568 .resume = nsp32_resume,
3569 .enable_wake = nsp32_enable_wake,
3573 /*********************************************************************
3576 static int __init init_nsp32(void) {
3577 nsp32_msg(KERN_INFO, "loading...");
3578 return pci_module_init(&nsp32_driver);
3581 static void __exit exit_nsp32(void) {
3582 nsp32_msg(KERN_INFO, "unloading...");
3583 pci_unregister_driver(&nsp32_driver);
3586 module_init(init_nsp32);
3587 module_exit(exit_nsp32);
projects / linux-2.6 / blob